aboutsummaryrefslogtreecommitdiff
path: root/net/xfrm/xfrm_user.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/xfrm/xfrm_user.c')
-rw-r--r--net/xfrm/xfrm_user.c260
1 files changed, 187 insertions, 73 deletions
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index a278a6f3b99..7877e7975da 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,
@@ -1890,10 +1914,17 @@ static int xfrm_send_migrate(struct xfrm_selector *sel, u8 dir, u8 type,
}
#endif
+/* For the xfrm_usersa_info cases we have to work around some 32-bit vs.
+ * 64-bit compatability issues. On 32-bit the structure is 220 bytes, but
+ * for 64-bit it gets padded out to 224 bytes. Those bytes are just
+ * padding and don't have any content we care about. Therefore as long
+ * as we have enough bytes for the content we can make both cases work.
+ */
+
#define XMSGSIZE(type) sizeof(struct type)
static const int xfrm_msg_min[XFRM_NR_MSGTYPES] = {
- [XFRM_MSG_NEWSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_info),
+ [XFRM_MSG_NEWSA - XFRM_MSG_BASE] = 220, /* see above */
[XFRM_MSG_DELSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_id),
[XFRM_MSG_GETSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_id),
[XFRM_MSG_NEWPOLICY - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_info),
@@ -1903,7 +1934,7 @@ static const int xfrm_msg_min[XFRM_NR_MSGTYPES] = {
[XFRM_MSG_ACQUIRE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_acquire),
[XFRM_MSG_EXPIRE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_expire),
[XFRM_MSG_UPDPOLICY - XFRM_MSG_BASE] = XMSGSIZE(xfrm_userpolicy_info),
- [XFRM_MSG_UPDSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_info),
+ [XFRM_MSG_UPDSA - XFRM_MSG_BASE] = 220, /* see above */
[XFRM_MSG_POLEXPIRE - XFRM_MSG_BASE] = XMSGSIZE(xfrm_user_polexpire),
[XFRM_MSG_FLUSHSA - XFRM_MSG_BASE] = XMSGSIZE(xfrm_usersa_flush),
[XFRM_MSG_FLUSHPOLICY - XFRM_MSG_BASE] = 0,
@@ -1968,6 +1999,7 @@ 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 +2021,7 @@ 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 +2065,7 @@ 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 +2075,12 @@ 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 +2090,12 @@ 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 +2116,7 @@ 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 +2146,7 @@ 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 +2191,7 @@ 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 +2271,7 @@ 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 +2281,7 @@ 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 +2290,7 @@ 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 +2329,7 @@ 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 +2382,7 @@ 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 +2392,12 @@ 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 +2448,7 @@ 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 +2457,7 @@ 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 +2473,7 @@ 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 +2529,8 @@ 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 +2541,59 @@ 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 +2604,56 @@ 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");
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-29 08:25:04 +0000