1 files changed, 178 insertions, 71 deletions

diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index a278a6f3b991..b95a2d64eb59 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -316,11 +316,12 @@ static void xfrm_update_ae_params(struct xfrm_state *x, struct nlattr **attrs)
                 x->replay_maxdiff = nla_get_u32(rt);
 }
 
-static struct xfrm_state *xfrm_state_construct(struct xfrm_usersa_info *p,
+static struct xfrm_state *xfrm_state_construct(struct net *net,
+                                               struct xfrm_usersa_info *p,
                                                struct nlattr **attrs,
                                                int *errp)
 {
-        struct xfrm_state *x = xfrm_state_alloc();
+        struct xfrm_state *x = xfrm_state_alloc(net);
         int err = -ENOMEM;
 
         if (!x)
@@ -367,9 +368,9 @@ static struct xfrm_state *xfrm_state_construct(struct xfrm_usersa_info *p,
                 goto error;
 
         x->km.seq = p->seq;
-        x->replay_maxdiff = sysctl_xfrm_aevent_rseqth;
+        x->replay_maxdiff = net->xfrm.sysctl_aevent_rseqth;
         /* sysctl_xfrm_aevent_etime is in 100ms units */
-        x->replay_maxage = (sysctl_xfrm_aevent_etime*HZ)/XFRM_AE_ETH_M;
+        x->replay_maxage = (net->xfrm.sysctl_aevent_etime*HZ)/XFRM_AE_ETH_M;
         x->preplay.bitmap = 0;
         x->preplay.seq = x->replay.seq+x->replay_maxdiff;
         x->preplay.oseq = x->replay.oseq +x->replay_maxdiff;
@@ -391,6 +392,7 @@ error_no_put:
 static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct xfrm_usersa_info *p = nlmsg_data(nlh);
         struct xfrm_state *x;
         int err;
@@ -403,7 +405,7 @@ static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
         if (err)
                 return err;
 
-        x = xfrm_state_construct(p, attrs, &err);
+        x = xfrm_state_construct(net, p, attrs, &err);
         if (!x)
                 return err;
 
@@ -431,7 +433,8 @@ out:
         return err;
 }
 
-static struct xfrm_state *xfrm_user_state_lookup(struct xfrm_usersa_id *p,
+static struct xfrm_state *xfrm_user_state_lookup(struct net *net,
+                                                 struct xfrm_usersa_id *p,
                                                  struct nlattr **attrs,
                                                  int *errp)
 {
@@ -440,7 +443,7 @@ static struct xfrm_state *xfrm_user_state_lookup(struct xfrm_usersa_id *p,
 
         if (xfrm_id_proto_match(p->proto, IPSEC_PROTO_ANY)) {
                 err = -ESRCH;
-                x = xfrm_state_lookup(&p->daddr, p->spi, p->proto, p->family);
+                x = xfrm_state_lookup(net, &p->daddr, p->spi, p->proto, p->family);
         } else {
                 xfrm_address_t *saddr = NULL;
 
@@ -451,8 +454,8 @@ static struct xfrm_state *xfrm_user_state_lookup(struct xfrm_usersa_id *p,
                 }
 
                 err = -ESRCH;
-                x = xfrm_state_lookup_byaddr(&p->daddr, saddr, p->proto,
-                                             p->family);
+                x = xfrm_state_lookup_byaddr(net, &p->daddr, saddr,
+                                             p->proto, p->family);
         }
 
  out:
@@ -464,6 +467,7 @@ static struct xfrm_state *xfrm_user_state_lookup(struct xfrm_usersa_id *p,
 static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct xfrm_state *x;
         int err = -ESRCH;
         struct km_event c;
@@ -472,7 +476,7 @@ static int xfrm_del_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
         u32 sessionid = NETLINK_CB(skb).sessionid;
         u32 sid = NETLINK_CB(skb).sid;
 
-        x = xfrm_user_state_lookup(p, attrs, &err);
+        x = xfrm_user_state_lookup(net, p, attrs, &err);
         if (x == NULL)
                 return err;
 
@@ -615,6 +619,7 @@ static int xfrm_dump_sa_done(struct netlink_callback *cb)
 
 static int xfrm_dump_sa(struct sk_buff *skb, struct netlink_callback *cb)
 {
+        struct net *net = sock_net(skb->sk);
         struct xfrm_state_walk *walk = (struct xfrm_state_walk *) &cb->args[1];
         struct xfrm_dump_info info;
 
@@ -631,7 +636,7 @@ static int xfrm_dump_sa(struct sk_buff *skb, struct netlink_callback *cb)
                 xfrm_state_walk_init(walk, 0);
         }
 
-        (void) xfrm_state_walk(walk, dump_one_state, &info);
+        (void) xfrm_state_walk(net, walk, dump_one_state, &info);
 
         return skb->len;
 }
@@ -703,6 +708,7 @@ nla_put_failure:
 static int xfrm_get_spdinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct sk_buff *r_skb;
         u32 *flags = nlmsg_data(nlh);
         u32 spid = NETLINK_CB(skb).pid;
@@ -715,7 +721,7 @@ static int xfrm_get_spdinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
         if (build_spdinfo(r_skb, spid, seq, *flags) < 0)
                 BUG();
 
-        return nlmsg_unicast(xfrm_nl, r_skb, spid);
+        return nlmsg_unicast(net->xfrm.nlsk, r_skb, spid);
 }
 
 static inline size_t xfrm_sadinfo_msgsize(void)
@@ -756,6 +762,7 @@ nla_put_failure:
 static int xfrm_get_sadinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct sk_buff *r_skb;
         u32 *flags = nlmsg_data(nlh);
         u32 spid = NETLINK_CB(skb).pid;
@@ -768,18 +775,19 @@ static int xfrm_get_sadinfo(struct sk_buff *skb, struct nlmsghdr *nlh,
         if (build_sadinfo(r_skb, spid, seq, *flags) < 0)
                 BUG();
 
-        return nlmsg_unicast(xfrm_nl, r_skb, spid);
+        return nlmsg_unicast(net->xfrm.nlsk, r_skb, spid);
 }
 
 static int xfrm_get_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct xfrm_usersa_id *p = nlmsg_data(nlh);
         struct xfrm_state *x;
         struct sk_buff *resp_skb;
         int err = -ESRCH;
 
-        x = xfrm_user_state_lookup(p, attrs, &err);
+        x = xfrm_user_state_lookup(net, p, attrs, &err);
         if (x == NULL)
                 goto out_noput;
 
@@ -787,7 +795,7 @@ static int xfrm_get_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
         if (IS_ERR(resp_skb)) {
                 err = PTR_ERR(resp_skb);
         } else {
-                err = nlmsg_unicast(xfrm_nl, resp_skb, NETLINK_CB(skb).pid);
+                err = nlmsg_unicast(net->xfrm.nlsk, resp_skb, NETLINK_CB(skb).pid);
         }
         xfrm_state_put(x);
 out_noput:
@@ -820,6 +828,7 @@ static int verify_userspi_info(struct xfrm_userspi_info *p)
 static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct xfrm_state *x;
         struct xfrm_userspi_info *p;
         struct sk_buff *resp_skb;
@@ -837,7 +846,7 @@ static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
 
         x = NULL;
         if (p->info.seq) {
-                x = xfrm_find_acq_byseq(p->info.seq);
+                x = xfrm_find_acq_byseq(net, p->info.seq);
                 if (x && xfrm_addr_cmp(&x->id.daddr, daddr, family)) {
                         xfrm_state_put(x);
                         x = NULL;
@@ -845,7 +854,7 @@ static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
         }
 
         if (!x)
-                x = xfrm_find_acq(p->info.mode, p->info.reqid,
+                x = xfrm_find_acq(net, p->info.mode, p->info.reqid,
                                   p->info.id.proto, daddr,
                                   &p->info.saddr, 1,
                                   family);
@@ -863,7 +872,7 @@ static int xfrm_alloc_userspi(struct sk_buff *skb, struct nlmsghdr *nlh,
                 goto out;
         }
 
-        err = nlmsg_unicast(xfrm_nl, resp_skb, NETLINK_CB(skb).pid);
+        err = nlmsg_unicast(net->xfrm.nlsk, resp_skb, NETLINK_CB(skb).pid);
 
 out:
         xfrm_state_put(x);
@@ -1078,9 +1087,9 @@ static void copy_to_user_policy(struct xfrm_policy *xp, struct xfrm_userpolicy_i
         p->share = XFRM_SHARE_ANY; /* XXX xp->share */
 }
 
-static struct xfrm_policy *xfrm_policy_construct(struct xfrm_userpolicy_info *p, struct nlattr **attrs, int *errp)
+static struct xfrm_policy *xfrm_policy_construct(struct net *net, struct xfrm_userpolicy_info *p, struct nlattr **attrs, int *errp)
 {
-        struct xfrm_policy *xp = xfrm_policy_alloc(GFP_KERNEL);
+        struct xfrm_policy *xp = xfrm_policy_alloc(net, GFP_KERNEL);
         int err;
 
         if (!xp) {
@@ -1110,6 +1119,7 @@ static struct xfrm_policy *xfrm_policy_construct(struct xfrm_userpolicy_info *p,
 static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct xfrm_userpolicy_info *p = nlmsg_data(nlh);
         struct xfrm_policy *xp;
         struct km_event c;
@@ -1126,7 +1136,7 @@ static int xfrm_add_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
         if (err)
                 return err;
 
-        xp = xfrm_policy_construct(p, attrs, &err);
+        xp = xfrm_policy_construct(net, p, attrs, &err);
         if (!xp)
                 return err;
 
@@ -1263,6 +1273,7 @@ static int xfrm_dump_policy_done(struct netlink_callback *cb)
 
 static int xfrm_dump_policy(struct sk_buff *skb, struct netlink_callback *cb)
 {
+        struct net *net = sock_net(skb->sk);
         struct xfrm_policy_walk *walk = (struct xfrm_policy_walk *) &cb->args[1];
         struct xfrm_dump_info info;
 
@@ -1279,7 +1290,7 @@ static int xfrm_dump_policy(struct sk_buff *skb, struct netlink_callback *cb)
                 xfrm_policy_walk_init(walk, XFRM_POLICY_TYPE_ANY);
         }
 
-        (void) xfrm_policy_walk(walk, dump_one_policy, &info);
+        (void) xfrm_policy_walk(net, walk, dump_one_policy, &info);
 
         return skb->len;
 }
@@ -1311,6 +1322,7 @@ static struct sk_buff *xfrm_policy_netlink(struct sk_buff *in_skb,
 static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct xfrm_policy *xp;
         struct xfrm_userpolicy_id *p;
         u8 type = XFRM_POLICY_TYPE_MAIN;
@@ -1330,7 +1342,7 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
                 return err;
 
         if (p->index)
-                xp = xfrm_policy_byid(type, p->dir, p->index, delete, &err);
+                xp = xfrm_policy_byid(net, type, p->dir, p->index, delete, &err);
         else {
                 struct nlattr *rt = attrs[XFRMA_SEC_CTX];
                 struct xfrm_sec_ctx *ctx;
@@ -1347,7 +1359,7 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
                         if (err)
                                 return err;
                 }
-                xp = xfrm_policy_bysel_ctx(type, p->dir, &p->sel, ctx,
+                xp = xfrm_policy_bysel_ctx(net, type, p->dir, &p->sel, ctx,
                                            delete, &err);
                 security_xfrm_policy_free(ctx);
         }
@@ -1361,7 +1373,7 @@ static int xfrm_get_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
                 if (IS_ERR(resp_skb)) {
                         err = PTR_ERR(resp_skb);
                 } else {
-                        err = nlmsg_unicast(xfrm_nl, resp_skb,
+                        err = nlmsg_unicast(net->xfrm.nlsk, resp_skb,
                                             NETLINK_CB(skb).pid);
                 }
         } else {
@@ -1390,6 +1402,7 @@ out:
 static int xfrm_flush_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct km_event c;
         struct xfrm_usersa_flush *p = nlmsg_data(nlh);
         struct xfrm_audit audit_info;
@@ -1398,13 +1411,14 @@ static int xfrm_flush_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
         audit_info.loginuid = NETLINK_CB(skb).loginuid;
         audit_info.sessionid = NETLINK_CB(skb).sessionid;
         audit_info.secid = NETLINK_CB(skb).sid;
-        err = xfrm_state_flush(p->proto, &audit_info);
+        err = xfrm_state_flush(net, p->proto, &audit_info);
         if (err)
                 return err;
         c.data.proto = p->proto;
         c.event = nlh->nlmsg_type;
         c.seq = nlh->nlmsg_seq;
         c.pid = nlh->nlmsg_pid;
+        c.net = net;
         km_state_notify(NULL, &c);
 
         return 0;
@@ -1457,6 +1471,7 @@ nla_put_failure:
 static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct xfrm_state *x;
         struct sk_buff *r_skb;
         int err;
@@ -1468,7 +1483,7 @@ static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
         if (r_skb == NULL)
                 return -ENOMEM;
 
-        x = xfrm_state_lookup(&id->daddr, id->spi, id->proto, id->family);
+        x = xfrm_state_lookup(net, &id->daddr, id->spi, id->proto, id->family);
         if (x == NULL) {
                 kfree_skb(r_skb);
                 return -ESRCH;
@@ -1486,7 +1501,7 @@ static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
 
         if (build_aevent(r_skb, x, &c) < 0)
                 BUG();
-        err = nlmsg_unicast(xfrm_nl, r_skb, NETLINK_CB(skb).pid);
+        err = nlmsg_unicast(net->xfrm.nlsk, r_skb, NETLINK_CB(skb).pid);
         spin_unlock_bh(&x->lock);
         xfrm_state_put(x);
         return err;
@@ -1495,6 +1510,7 @@ static int xfrm_get_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
 static int xfrm_new_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct xfrm_state *x;
         struct km_event c;
         int err = - EINVAL;
@@ -1509,7 +1525,7 @@ static int xfrm_new_ae(struct sk_buff *skb, struct nlmsghdr *nlh,
         if (!(nlh->nlmsg_flags&NLM_F_REPLACE))
                 return err;
 
-        x = xfrm_state_lookup(&p->sa_id.daddr, p->sa_id.spi, p->sa_id.proto, p->sa_id.family);
+        x = xfrm_state_lookup(net, &p->sa_id.daddr, p->sa_id.spi, p->sa_id.proto, p->sa_id.family);
         if (x == NULL)
                 return -ESRCH;
 
@@ -1534,6 +1550,7 @@ out:
 static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct km_event c;
         u8 type = XFRM_POLICY_TYPE_MAIN;
         int err;
@@ -1546,13 +1563,14 @@ static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
         audit_info.loginuid = NETLINK_CB(skb).loginuid;
         audit_info.sessionid = NETLINK_CB(skb).sessionid;
         audit_info.secid = NETLINK_CB(skb).sid;
-        err = xfrm_policy_flush(type, &audit_info);
+        err = xfrm_policy_flush(net, type, &audit_info);
         if (err)
                 return err;
         c.data.type = type;
         c.event = nlh->nlmsg_type;
         c.seq = nlh->nlmsg_seq;
         c.pid = nlh->nlmsg_pid;
+        c.net = net;
         km_policy_notify(NULL, 0, &c);
         return 0;
 }
@@ -1560,6 +1578,7 @@ static int xfrm_flush_policy(struct sk_buff *skb, struct nlmsghdr *nlh,
 static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct xfrm_policy *xp;
         struct xfrm_user_polexpire *up = nlmsg_data(nlh);
         struct xfrm_userpolicy_info *p = &up->pol;
@@ -1571,7 +1590,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
                 return err;
 
         if (p->index)
-                xp = xfrm_policy_byid(type, p->dir, p->index, 0, &err);
+                xp = xfrm_policy_byid(net, type, p->dir, p->index, 0, &err);
         else {
                 struct nlattr *rt = attrs[XFRMA_SEC_CTX];
                 struct xfrm_sec_ctx *ctx;
@@ -1588,7 +1607,7 @@ static int xfrm_add_pol_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
                         if (err)
                                 return err;
                 }
-                xp = xfrm_policy_bysel_ctx(type, p->dir, &p->sel, ctx, 0, &err);
+                xp = xfrm_policy_bysel_ctx(net, type, p->dir, &p->sel, ctx, 0, &err);
                 security_xfrm_policy_free(ctx);
         }
         if (xp == NULL)
@@ -1623,12 +1642,13 @@ out:
 static int xfrm_add_sa_expire(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct xfrm_state *x;
         int err;
         struct xfrm_user_expire *ue = nlmsg_data(nlh);
         struct xfrm_usersa_info *p = &ue->state;
 
-        x = xfrm_state_lookup(&p->id.daddr, p->id.spi, p->id.proto, p->family);
+        x = xfrm_state_lookup(net, &p->id.daddr, p->id.spi, p->id.proto, p->family);
 
         err = -ENOENT;
         if (x == NULL)
@@ -1657,31 +1677,27 @@ out:
 static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh,
                 struct nlattr **attrs)
 {
+        struct net *net = sock_net(skb->sk);
         struct xfrm_policy *xp;
         struct xfrm_user_tmpl *ut;
         int i;
         struct nlattr *rt = attrs[XFRMA_TMPL];
 
         struct xfrm_user_acquire *ua = nlmsg_data(nlh);
-        struct xfrm_state *x = xfrm_state_alloc();
+        struct xfrm_state *x = xfrm_state_alloc(net);
         int err = -ENOMEM;
 
         if (!x)
-                return err;
+                goto nomem;
 
         err = verify_newpolicy_info(&ua->policy);
-        if (err) {
-                printk("BAD policy passed\n");
-                kfree(x);
-                return err;
-        }
+        if (err)
+                goto bad_policy;
 
         /*   build an XP */
-        xp = xfrm_policy_construct(&ua->policy, attrs, &err);
-        if (!xp) {
-                kfree(x);
-                return err;
-        }
+        xp = xfrm_policy_construct(net, &ua->policy, attrs, &err);
+        if (!xp)
+                goto free_state;
 
         memcpy(&x->id, &ua->id, sizeof(ua->id));
         memcpy(&x->props.saddr, &ua->saddr, sizeof(ua->saddr));
@@ -1706,6 +1722,13 @@ static int xfrm_add_acquire(struct sk_buff *skb, struct nlmsghdr *nlh,
         kfree(xp);
 
         return 0;
+
+bad_policy:
+        printk("BAD policy passed\n");
+free_state:
+        kfree(x);
+nomem:
+        return err;
 }
 
 #ifdef CONFIG_XFRM_MIGRATE
@@ -1869,6 +1892,7 @@ static int xfrm_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
                              struct xfrm_migrate *m, int num_migrate,
                              struct xfrm_kmaddress *k)
 {
+        struct net *net = &init_net;
         struct sk_buff *skb;
 
         skb = nlmsg_new(xfrm_migrate_msgsize(num_migrate, !!k), GFP_ATOMIC);
@@ -1879,7 +1903,7 @@ static int xfrm_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
         if (build_migrate(skb, m, num_migrate, k, sel, dir, type) < 0)
                 BUG();
 
-        return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_MIGRATE, GFP_ATOMIC);
+        return nlmsg_multicast(net->xfrm.nlsk, skb, 0, XFRMNLGRP_MIGRATE, GFP_ATOMIC);
 }
 #else
 static int xfrm_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
@@ -1968,6 +1992,7 @@ static struct xfrm_link {
 
 static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 {
+        struct net *net = sock_net(skb->sk);
         struct nlattr *attrs[XFRMA_MAX+1];
         struct xfrm_link *link;
         int type, err;
@@ -1989,7 +2014,7 @@ static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 if (link->dump == NULL)
                         return -EINVAL;
 
-                return netlink_dump_start(xfrm_nl, skb, nlh, link->dump, link->done);
+                return netlink_dump_start(net->xfrm.nlsk, skb, nlh, link->dump, link->done);
         }
 
         err = nlmsg_parse(nlh, xfrm_msg_min[type], attrs, XFRMA_MAX,
@@ -2033,6 +2058,7 @@ static int build_expire(struct sk_buff *skb, struct xfrm_state *x, struct km_eve
 
 static int xfrm_exp_state_notify(struct xfrm_state *x, struct km_event *c)
 {
+        struct net *net = xs_net(x);
         struct sk_buff *skb;
 
         skb = nlmsg_new(xfrm_expire_msgsize(), GFP_ATOMIC);
@@ -2042,11 +2068,12 @@ static int xfrm_exp_state_notify(struct xfrm_state *x, struct km_event *c)
         if (build_expire(skb, x, c) < 0)
                 BUG();
 
-        return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_EXPIRE, GFP_ATOMIC);
+        return nlmsg_multicast(net->xfrm.nlsk, skb, 0, XFRMNLGRP_EXPIRE, GFP_ATOMIC);
 }
 
 static int xfrm_aevent_state_notify(struct xfrm_state *x, struct km_event *c)
 {
+        struct net *net = xs_net(x);
         struct sk_buff *skb;
 
         skb = nlmsg_new(xfrm_aevent_msgsize(), GFP_ATOMIC);
@@ -2056,11 +2083,12 @@ static int xfrm_aevent_state_notify(struct xfrm_state *x, struct km_event *c)
         if (build_aevent(skb, x, c) < 0)
                 BUG();
 
-        return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_AEVENTS, GFP_ATOMIC);
+        return nlmsg_multicast(net->xfrm.nlsk, skb, 0, XFRMNLGRP_AEVENTS, GFP_ATOMIC);
 }
 
 static int xfrm_notify_sa_flush(struct km_event *c)
 {
+        struct net *net = c->net;
         struct xfrm_usersa_flush *p;
         struct nlmsghdr *nlh;
         struct sk_buff *skb;
@@ -2081,7 +2109,7 @@ static int xfrm_notify_sa_flush(struct km_event *c)
 
         nlmsg_end(skb, nlh);
 
-        return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_SA, GFP_ATOMIC);
+        return nlmsg_multicast(net->xfrm.nlsk, skb, 0, XFRMNLGRP_SA, GFP_ATOMIC);
 }
 
 static inline size_t xfrm_sa_len(struct xfrm_state *x)
@@ -2111,6 +2139,7 @@ static inline size_t xfrm_sa_len(struct xfrm_state *x)
 
 static int xfrm_notify_sa(struct xfrm_state *x, struct km_event *c)
 {
+        struct net *net = xs_net(x);
         struct xfrm_usersa_info *p;
         struct xfrm_usersa_id *id;
         struct nlmsghdr *nlh;
@@ -2155,7 +2184,7 @@ static int xfrm_notify_sa(struct xfrm_state *x, struct km_event *c)
 
         nlmsg_end(skb, nlh);
 
-        return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_SA, GFP_ATOMIC);
+        return nlmsg_multicast(net->xfrm.nlsk, skb, 0, XFRMNLGRP_SA, GFP_ATOMIC);
 
 nla_put_failure:
         /* Somebody screwed up with xfrm_sa_len! */
@@ -2235,6 +2264,7 @@ nlmsg_failure:
 static int xfrm_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *xt,
                              struct xfrm_policy *xp, int dir)
 {
+        struct net *net = xs_net(x);
         struct sk_buff *skb;
 
         skb = nlmsg_new(xfrm_acquire_msgsize(x, xp), GFP_ATOMIC);
@@ -2244,7 +2274,7 @@ static int xfrm_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *xt,
         if (build_acquire(skb, x, xt, xp, dir) < 0)
                 BUG();
 
-        return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_ACQUIRE, GFP_ATOMIC);
+        return nlmsg_multicast(net->xfrm.nlsk, skb, 0, XFRMNLGRP_ACQUIRE, GFP_ATOMIC);
 }
 
 /* User gives us xfrm_user_policy_info followed by an array of 0
@@ -2253,6 +2283,7 @@ static int xfrm_send_acquire(struct xfrm_state *x, struct xfrm_tmpl *xt,
 static struct xfrm_policy *xfrm_compile_policy(struct sock *sk, int opt,
                                                u8 *data, int len, int *dir)
 {
+        struct net *net = sock_net(sk);
         struct xfrm_userpolicy_info *p = (struct xfrm_userpolicy_info *)data;
         struct xfrm_user_tmpl *ut = (struct xfrm_user_tmpl *) (p + 1);
         struct xfrm_policy *xp;
@@ -2291,7 +2322,7 @@ static struct xfrm_policy *xfrm_compile_policy(struct sock *sk, int opt,
         if (p->dir > XFRM_POLICY_OUT)
                 return NULL;
 
-        xp = xfrm_policy_alloc(GFP_KERNEL);
+        xp = xfrm_policy_alloc(net, GFP_KERNEL);
         if (xp == NULL) {
                 *dir = -ENOBUFS;
                 return NULL;
@@ -2344,6 +2375,7 @@ nlmsg_failure:
 
 static int xfrm_exp_policy_notify(struct xfrm_policy *xp, int dir, struct km_event *c)
 {
+        struct net *net = xp_net(xp);
         struct sk_buff *skb;
 
         skb = nlmsg_new(xfrm_polexpire_msgsize(xp), GFP_ATOMIC);
@@ -2353,11 +2385,12 @@ static int xfrm_exp_policy_notify(struct xfrm_policy *xp, int dir, struct km_eve
         if (build_polexpire(skb, xp, dir, c) < 0)
                 BUG();
 
-        return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_EXPIRE, GFP_ATOMIC);
+        return nlmsg_multicast(net->xfrm.nlsk, skb, 0, XFRMNLGRP_EXPIRE, GFP_ATOMIC);
 }
 
 static int xfrm_notify_policy(struct xfrm_policy *xp, int dir, struct km_event *c)
 {
+        struct net *net = xp_net(xp);
         struct xfrm_userpolicy_info *p;
         struct xfrm_userpolicy_id *id;
         struct nlmsghdr *nlh;
@@ -2408,7 +2441,7 @@ static int xfrm_notify_policy(struct xfrm_policy *xp, int dir, struct km_event *
 
         nlmsg_end(skb, nlh);
 
-        return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_POLICY, GFP_ATOMIC);
+        return nlmsg_multicast(net->xfrm.nlsk, skb, 0, XFRMNLGRP_POLICY, GFP_ATOMIC);
 
 nlmsg_failure:
         kfree_skb(skb);
@@ -2417,6 +2450,7 @@ nlmsg_failure:
 
 static int xfrm_notify_policy_flush(struct km_event *c)
 {
+        struct net *net = c->net;
         struct nlmsghdr *nlh;
         struct sk_buff *skb;
 
@@ -2432,7 +2466,7 @@ static int xfrm_notify_policy_flush(struct km_event *c)
 
         nlmsg_end(skb, nlh);
 
-        return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_POLICY, GFP_ATOMIC);
+        return nlmsg_multicast(net->xfrm.nlsk, skb, 0, XFRMNLGRP_POLICY, GFP_ATOMIC);
 
 nlmsg_failure:
         kfree_skb(skb);
@@ -2488,8 +2522,8 @@ nla_put_failure:
         return -EMSGSIZE;
 }
 
-static int xfrm_send_report(u8 proto, struct xfrm_selector *sel,
-                            xfrm_address_t *addr)
+static int xfrm_send_report(struct net *net, u8 proto,
+                            struct xfrm_selector *sel, xfrm_address_t *addr)
 {
         struct sk_buff *skb;
 
@@ -2500,7 +2534,59 @@ static int xfrm_send_report(u8 proto, struct xfrm_selector *sel,
         if (build_report(skb, proto, sel, addr) < 0)
                 BUG();
 
-        return nlmsg_multicast(xfrm_nl, skb, 0, XFRMNLGRP_REPORT, GFP_ATOMIC);
+        return nlmsg_multicast(net->xfrm.nlsk, skb, 0, XFRMNLGRP_REPORT, GFP_ATOMIC);
+}
+
+static inline size_t xfrm_mapping_msgsize(void)
+{
+        return NLMSG_ALIGN(sizeof(struct xfrm_user_mapping));
+}
+
+static int build_mapping(struct sk_buff *skb, struct xfrm_state *x,
+                         xfrm_address_t *new_saddr, __be16 new_sport)
+{
+        struct xfrm_user_mapping *um;
+        struct nlmsghdr *nlh;
+
+        nlh = nlmsg_put(skb, 0, 0, XFRM_MSG_MAPPING, sizeof(*um), 0);
+        if (nlh == NULL)
+                return -EMSGSIZE;
+
+        um = nlmsg_data(nlh);
+
+        memcpy(&um->id.daddr, &x->id.daddr, sizeof(um->id.daddr));
+        um->id.spi = x->id.spi;
+        um->id.family = x->props.family;
+        um->id.proto = x->id.proto;
+        memcpy(&um->new_saddr, new_saddr, sizeof(um->new_saddr));
+        memcpy(&um->old_saddr, &x->props.saddr, sizeof(um->old_saddr));
+        um->new_sport = new_sport;
+        um->old_sport = x->encap->encap_sport;
+        um->reqid = x->props.reqid;
+
+        return nlmsg_end(skb, nlh);
+}
+
+static int xfrm_send_mapping(struct xfrm_state *x, xfrm_address_t *ipaddr,
+                             __be16 sport)
+{
+        struct net *net = xs_net(x);
+        struct sk_buff *skb;
+
+        if (x->id.proto != IPPROTO_ESP)
+                return -EINVAL;
+
+        if (!x->encap)
+                return -EINVAL;
+
+        skb = nlmsg_new(xfrm_mapping_msgsize(), GFP_ATOMIC);
+        if (skb == NULL)
+                return -ENOMEM;
+
+        if (build_mapping(skb, x, ipaddr, sport) < 0)
+                BUG();
+
+        return nlmsg_multicast(net->xfrm.nlsk, skb, 0, XFRMNLGRP_MAPPING, GFP_ATOMIC);
 }
 
 static struct xfrm_mgr netlink_mgr = {
@@ -2511,35 +2597,56 @@ static struct xfrm_mgr netlink_mgr = {
         .notify_policy  = xfrm_send_policy_notify,
         .report         = xfrm_send_report,
         .migrate        = xfrm_send_migrate,
+        .new_mapping    = xfrm_send_mapping,
 };
 
-static int __init xfrm_user_init(void)
+static int __net_init xfrm_user_net_init(struct net *net)
 {
         struct sock *nlsk;
 
-        printk(KERN_INFO "Initializing XFRM netlink socket\n");
-
-        nlsk = netlink_kernel_create(&init_net, NETLINK_XFRM, XFRMNLGRP_MAX,
+        nlsk = netlink_kernel_create(net, NETLINK_XFRM, XFRMNLGRP_MAX,
                                      xfrm_netlink_rcv, NULL, THIS_MODULE);
         if (nlsk == NULL)
                 return -ENOMEM;
-        rcu_assign_pointer(xfrm_nl, nlsk);
-
-        xfrm_register_km(&netlink_mgr);
-
+        rcu_assign_pointer(net->xfrm.nlsk, nlsk);
         return 0;
 }
 
-static void __exit xfrm_user_exit(void)
+static void __net_exit xfrm_user_net_exit(struct net *net)
 {
-        struct sock *nlsk = xfrm_nl;
+        struct sock *nlsk = net->xfrm.nlsk;
 
-        xfrm_unregister_km(&netlink_mgr);
-        rcu_assign_pointer(xfrm_nl, NULL);
+        rcu_assign_pointer(net->xfrm.nlsk, NULL);
         synchronize_rcu();
         netlink_kernel_release(nlsk);
 }
 
+static struct pernet_operations xfrm_user_net_ops = {
+        .init = xfrm_user_net_init,
+        .exit = xfrm_user_net_exit,
+};
+
+static int __init xfrm_user_init(void)
+{
+        int rv;
+
+        printk(KERN_INFO "Initializing XFRM netlink socket\n");
+
+        rv = register_pernet_subsys(&xfrm_user_net_ops);
+        if (rv < 0)
+                return rv;
+        rv = xfrm_register_km(&netlink_mgr);
+        if (rv < 0)
+                unregister_pernet_subsys(&xfrm_user_net_ops);
+        return rv;
+}
+
+static void __exit xfrm_user_exit(void)
+{
+        xfrm_unregister_km(&netlink_mgr);
+        unregister_pernet_subsys(&xfrm_user_net_ops);
+}
+
 module_init(xfrm_user_init);
 module_exit(xfrm_user_exit);
 MODULE_LICENSE("GPL");