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-rw-r--r--net/xfrm/xfrm_input.c24
-rw-r--r--net/xfrm/xfrm_interface.c136
-rw-r--r--net/xfrm/xfrm_policy.c11
-rw-r--r--net/xfrm/xfrm_replay.c12
4 files changed, 149 insertions, 34 deletions
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index bd984ff17c2d..37456d022cfa 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -42,7 +42,7 @@ struct xfrm_trans_cb {
#define XFRM_TRANS_SKB_CB(__skb) ((struct xfrm_trans_cb *)&((__skb)->cb[0]))
static DEFINE_SPINLOCK(xfrm_input_afinfo_lock);
-static struct xfrm_input_afinfo const __rcu *xfrm_input_afinfo[AF_INET6 + 1];
+static struct xfrm_input_afinfo const __rcu *xfrm_input_afinfo[2][AF_INET6 + 1];
static struct gro_cells gro_cells;
static struct net_device xfrm_napi_dev;
@@ -53,14 +53,14 @@ int xfrm_input_register_afinfo(const struct xfrm_input_afinfo *afinfo)
{
int err = 0;
- if (WARN_ON(afinfo->family >= ARRAY_SIZE(xfrm_input_afinfo)))
+ if (WARN_ON(afinfo->family > AF_INET6))
return -EAFNOSUPPORT;
spin_lock_bh(&xfrm_input_afinfo_lock);
- if (unlikely(xfrm_input_afinfo[afinfo->family] != NULL))
+ if (unlikely(xfrm_input_afinfo[afinfo->is_ipip][afinfo->family]))
err = -EEXIST;
else
- rcu_assign_pointer(xfrm_input_afinfo[afinfo->family], afinfo);
+ rcu_assign_pointer(xfrm_input_afinfo[afinfo->is_ipip][afinfo->family], afinfo);
spin_unlock_bh(&xfrm_input_afinfo_lock);
return err;
}
@@ -71,11 +71,11 @@ int xfrm_input_unregister_afinfo(const struct xfrm_input_afinfo *afinfo)
int err = 0;
spin_lock_bh(&xfrm_input_afinfo_lock);
- if (likely(xfrm_input_afinfo[afinfo->family] != NULL)) {
- if (unlikely(xfrm_input_afinfo[afinfo->family] != afinfo))
+ if (likely(xfrm_input_afinfo[afinfo->is_ipip][afinfo->family])) {
+ if (unlikely(xfrm_input_afinfo[afinfo->is_ipip][afinfo->family] != afinfo))
err = -EINVAL;
else
- RCU_INIT_POINTER(xfrm_input_afinfo[afinfo->family], NULL);
+ RCU_INIT_POINTER(xfrm_input_afinfo[afinfo->is_ipip][afinfo->family], NULL);
}
spin_unlock_bh(&xfrm_input_afinfo_lock);
synchronize_rcu();
@@ -83,15 +83,15 @@ int xfrm_input_unregister_afinfo(const struct xfrm_input_afinfo *afinfo)
}
EXPORT_SYMBOL(xfrm_input_unregister_afinfo);
-static const struct xfrm_input_afinfo *xfrm_input_get_afinfo(unsigned int family)
+static const struct xfrm_input_afinfo *xfrm_input_get_afinfo(u8 family, bool is_ipip)
{
const struct xfrm_input_afinfo *afinfo;
- if (WARN_ON_ONCE(family >= ARRAY_SIZE(xfrm_input_afinfo)))
+ if (WARN_ON_ONCE(family > AF_INET6))
return NULL;
rcu_read_lock();
- afinfo = rcu_dereference(xfrm_input_afinfo[family]);
+ afinfo = rcu_dereference(xfrm_input_afinfo[is_ipip][family]);
if (unlikely(!afinfo))
rcu_read_unlock();
return afinfo;
@@ -100,9 +100,11 @@ static const struct xfrm_input_afinfo *xfrm_input_get_afinfo(unsigned int family
static int xfrm_rcv_cb(struct sk_buff *skb, unsigned int family, u8 protocol,
int err)
{
+ bool is_ipip = (protocol == IPPROTO_IPIP || protocol == IPPROTO_IPV6);
+ const struct xfrm_input_afinfo *afinfo;
int ret;
- const struct xfrm_input_afinfo *afinfo = xfrm_input_get_afinfo(family);
+ afinfo = xfrm_input_get_afinfo(family, is_ipip);
if (!afinfo)
return -EAFNOSUPPORT;
diff --git a/net/xfrm/xfrm_interface.c b/net/xfrm/xfrm_interface.c
index b615729812e5..eb8181987620 100644
--- a/net/xfrm/xfrm_interface.c
+++ b/net/xfrm/xfrm_interface.c
@@ -48,21 +48,30 @@ static int xfrmi_dev_init(struct net_device *dev);
static void xfrmi_dev_setup(struct net_device *dev);
static struct rtnl_link_ops xfrmi_link_ops __read_mostly;
static unsigned int xfrmi_net_id __read_mostly;
+static const struct net_device_ops xfrmi_netdev_ops;
+
+#define XFRMI_HASH_BITS 8
+#define XFRMI_HASH_SIZE BIT(XFRMI_HASH_BITS)
struct xfrmi_net {
/* lists for storing interfaces in use */
- struct xfrm_if __rcu *xfrmi[1];
+ struct xfrm_if __rcu *xfrmi[XFRMI_HASH_SIZE];
};
#define for_each_xfrmi_rcu(start, xi) \
for (xi = rcu_dereference(start); xi; xi = rcu_dereference(xi->next))
+static u32 xfrmi_hash(u32 if_id)
+{
+ return hash_32(if_id, XFRMI_HASH_BITS);
+}
+
static struct xfrm_if *xfrmi_lookup(struct net *net, struct xfrm_state *x)
{
struct xfrmi_net *xfrmn = net_generic(net, xfrmi_net_id);
struct xfrm_if *xi;
- for_each_xfrmi_rcu(xfrmn->xfrmi[0], xi) {
+ for_each_xfrmi_rcu(xfrmn->xfrmi[xfrmi_hash(x->if_id)], xi) {
if (x->if_id == xi->p.if_id &&
(xi->dev->flags & IFF_UP))
return xi;
@@ -74,8 +83,7 @@ static struct xfrm_if *xfrmi_lookup(struct net *net, struct xfrm_state *x)
static struct xfrm_if *xfrmi_decode_session(struct sk_buff *skb,
unsigned short family)
{
- struct xfrmi_net *xfrmn;
- struct xfrm_if *xi;
+ struct net_device *dev;
int ifindex = 0;
if (!secpath_exists(skb) || !skb->dev)
@@ -89,23 +97,26 @@ static struct xfrm_if *xfrmi_decode_session(struct sk_buff *skb,
ifindex = inet_sdif(skb);
break;
}
- if (!ifindex)
- ifindex = skb->dev->ifindex;
- xfrmn = net_generic(xs_net(xfrm_input_state(skb)), xfrmi_net_id);
+ if (ifindex) {
+ struct net *net = xs_net(xfrm_input_state(skb));
- for_each_xfrmi_rcu(xfrmn->xfrmi[0], xi) {
- if (ifindex == xi->dev->ifindex &&
- (xi->dev->flags & IFF_UP))
- return xi;
+ dev = dev_get_by_index_rcu(net, ifindex);
+ } else {
+ dev = skb->dev;
}
- return NULL;
+ if (!dev || !(dev->flags & IFF_UP))
+ return NULL;
+ if (dev->netdev_ops != &xfrmi_netdev_ops)
+ return NULL;
+
+ return netdev_priv(dev);
}
static void xfrmi_link(struct xfrmi_net *xfrmn, struct xfrm_if *xi)
{
- struct xfrm_if __rcu **xip = &xfrmn->xfrmi[0];
+ struct xfrm_if __rcu **xip = &xfrmn->xfrmi[xfrmi_hash(xi->p.if_id)];
rcu_assign_pointer(xi->next , rtnl_dereference(*xip));
rcu_assign_pointer(*xip, xi);
@@ -116,7 +127,7 @@ static void xfrmi_unlink(struct xfrmi_net *xfrmn, struct xfrm_if *xi)
struct xfrm_if __rcu **xip;
struct xfrm_if *iter;
- for (xip = &xfrmn->xfrmi[0];
+ for (xip = &xfrmn->xfrmi[xfrmi_hash(xi->p.if_id)];
(iter = rtnl_dereference(*xip)) != NULL;
xip = &iter->next) {
if (xi == iter) {
@@ -160,7 +171,7 @@ static struct xfrm_if *xfrmi_locate(struct net *net, struct xfrm_if_parms *p)
struct xfrm_if *xi;
struct xfrmi_net *xfrmn = net_generic(net, xfrmi_net_id);
- for (xip = &xfrmn->xfrmi[0];
+ for (xip = &xfrmn->xfrmi[xfrmi_hash(p->if_id)];
(xi = rtnl_dereference(*xip)) != NULL;
xip = &xi->next)
if (xi->p.if_id == p->if_id)
@@ -760,11 +771,14 @@ static void __net_exit xfrmi_exit_batch_net(struct list_head *net_exit_list)
struct xfrmi_net *xfrmn = net_generic(net, xfrmi_net_id);
struct xfrm_if __rcu **xip;
struct xfrm_if *xi;
+ int i;
- for (xip = &xfrmn->xfrmi[0];
- (xi = rtnl_dereference(*xip)) != NULL;
- xip = &xi->next)
- unregister_netdevice_queue(xi->dev, &list);
+ for (i = 0; i < XFRMI_HASH_SIZE; i++) {
+ for (xip = &xfrmn->xfrmi[i];
+ (xi = rtnl_dereference(*xip)) != NULL;
+ xip = &xi->next)
+ unregister_netdevice_queue(xi->dev, &list);
+ }
}
unregister_netdevice_many(&list);
rtnl_unlock();
@@ -800,6 +814,33 @@ static struct xfrm6_protocol xfrmi_ipcomp6_protocol __read_mostly = {
.priority = 10,
};
+#if IS_REACHABLE(CONFIG_INET6_XFRM_TUNNEL)
+static int xfrmi6_rcv_tunnel(struct sk_buff *skb)
+{
+ const xfrm_address_t *saddr;
+ __be32 spi;
+
+ saddr = (const xfrm_address_t *)&ipv6_hdr(skb)->saddr;
+ spi = xfrm6_tunnel_spi_lookup(dev_net(skb->dev), saddr);
+
+ return xfrm6_rcv_spi(skb, IPPROTO_IPV6, spi, NULL);
+}
+
+static struct xfrm6_tunnel xfrmi_ipv6_handler __read_mostly = {
+ .handler = xfrmi6_rcv_tunnel,
+ .cb_handler = xfrmi_rcv_cb,
+ .err_handler = xfrmi6_err,
+ .priority = -1,
+};
+
+static struct xfrm6_tunnel xfrmi_ip6ip_handler __read_mostly = {
+ .handler = xfrmi6_rcv_tunnel,
+ .cb_handler = xfrmi_rcv_cb,
+ .err_handler = xfrmi6_err,
+ .priority = -1,
+};
+#endif
+
static struct xfrm4_protocol xfrmi_esp4_protocol __read_mostly = {
.handler = xfrm4_rcv,
.input_handler = xfrm_input,
@@ -824,6 +865,27 @@ static struct xfrm4_protocol xfrmi_ipcomp4_protocol __read_mostly = {
.priority = 10,
};
+#if IS_REACHABLE(CONFIG_INET_XFRM_TUNNEL)
+static int xfrmi4_rcv_tunnel(struct sk_buff *skb)
+{
+ return xfrm4_rcv_spi(skb, IPPROTO_IPIP, ip_hdr(skb)->saddr);
+}
+
+static struct xfrm_tunnel xfrmi_ipip_handler __read_mostly = {
+ .handler = xfrmi4_rcv_tunnel,
+ .cb_handler = xfrmi_rcv_cb,
+ .err_handler = xfrmi4_err,
+ .priority = -1,
+};
+
+static struct xfrm_tunnel xfrmi_ipip6_handler __read_mostly = {
+ .handler = xfrmi4_rcv_tunnel,
+ .cb_handler = xfrmi_rcv_cb,
+ .err_handler = xfrmi4_err,
+ .priority = -1,
+};
+#endif
+
static int __init xfrmi4_init(void)
{
int err;
@@ -837,9 +899,23 @@ static int __init xfrmi4_init(void)
err = xfrm4_protocol_register(&xfrmi_ipcomp4_protocol, IPPROTO_COMP);
if (err < 0)
goto xfrm_proto_comp_failed;
+#if IS_REACHABLE(CONFIG_INET_XFRM_TUNNEL)
+ err = xfrm4_tunnel_register(&xfrmi_ipip_handler, AF_INET);
+ if (err < 0)
+ goto xfrm_tunnel_ipip_failed;
+ err = xfrm4_tunnel_register(&xfrmi_ipip6_handler, AF_INET6);
+ if (err < 0)
+ goto xfrm_tunnel_ipip6_failed;
+#endif
return 0;
+#if IS_REACHABLE(CONFIG_INET_XFRM_TUNNEL)
+xfrm_tunnel_ipip6_failed:
+ xfrm4_tunnel_deregister(&xfrmi_ipip_handler, AF_INET);
+xfrm_tunnel_ipip_failed:
+ xfrm4_protocol_deregister(&xfrmi_ipcomp4_protocol, IPPROTO_COMP);
+#endif
xfrm_proto_comp_failed:
xfrm4_protocol_deregister(&xfrmi_ah4_protocol, IPPROTO_AH);
xfrm_proto_ah_failed:
@@ -850,6 +926,10 @@ xfrm_proto_esp_failed:
static void xfrmi4_fini(void)
{
+#if IS_REACHABLE(CONFIG_INET_XFRM_TUNNEL)
+ xfrm4_tunnel_deregister(&xfrmi_ipip6_handler, AF_INET6);
+ xfrm4_tunnel_deregister(&xfrmi_ipip_handler, AF_INET);
+#endif
xfrm4_protocol_deregister(&xfrmi_ipcomp4_protocol, IPPROTO_COMP);
xfrm4_protocol_deregister(&xfrmi_ah4_protocol, IPPROTO_AH);
xfrm4_protocol_deregister(&xfrmi_esp4_protocol, IPPROTO_ESP);
@@ -868,9 +948,23 @@ static int __init xfrmi6_init(void)
err = xfrm6_protocol_register(&xfrmi_ipcomp6_protocol, IPPROTO_COMP);
if (err < 0)
goto xfrm_proto_comp_failed;
+#if IS_REACHABLE(CONFIG_INET6_XFRM_TUNNEL)
+ err = xfrm6_tunnel_register(&xfrmi_ipv6_handler, AF_INET6);
+ if (err < 0)
+ goto xfrm_tunnel_ipv6_failed;
+ err = xfrm6_tunnel_register(&xfrmi_ip6ip_handler, AF_INET);
+ if (err < 0)
+ goto xfrm_tunnel_ip6ip_failed;
+#endif
return 0;
+#if IS_REACHABLE(CONFIG_INET6_XFRM_TUNNEL)
+xfrm_tunnel_ip6ip_failed:
+ xfrm6_tunnel_deregister(&xfrmi_ipv6_handler, AF_INET6);
+xfrm_tunnel_ipv6_failed:
+ xfrm6_protocol_deregister(&xfrmi_ipcomp6_protocol, IPPROTO_COMP);
+#endif
xfrm_proto_comp_failed:
xfrm6_protocol_deregister(&xfrmi_ah6_protocol, IPPROTO_AH);
xfrm_proto_ah_failed:
@@ -881,6 +975,10 @@ xfrm_proto_esp_failed:
static void xfrmi6_fini(void)
{
+#if IS_REACHABLE(CONFIG_INET6_XFRM_TUNNEL)
+ xfrm6_tunnel_deregister(&xfrmi_ip6ip_handler, AF_INET);
+ xfrm6_tunnel_deregister(&xfrmi_ipv6_handler, AF_INET6);
+#endif
xfrm6_protocol_deregister(&xfrmi_ipcomp6_protocol, IPPROTO_COMP);
xfrm6_protocol_deregister(&xfrmi_ah6_protocol, IPPROTO_AH);
xfrm6_protocol_deregister(&xfrmi_esp6_protocol, IPPROTO_ESP);
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 564aa6492e7c..be150475b28b 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -2758,6 +2758,7 @@ static void xfrm_policy_queue_process(struct timer_list *t)
struct xfrm_policy_queue *pq = &pol->polq;
struct flowi fl;
struct sk_buff_head list;
+ __u32 skb_mark;
spin_lock(&pq->hold_queue.lock);
skb = skb_peek(&pq->hold_queue);
@@ -2767,7 +2768,12 @@ static void xfrm_policy_queue_process(struct timer_list *t)
}
dst = skb_dst(skb);
sk = skb->sk;
+
+ /* Fixup the mark to support VTI. */
+ skb_mark = skb->mark;
+ skb->mark = pol->mark.v;
xfrm_decode_session(skb, &fl, dst->ops->family);
+ skb->mark = skb_mark;
spin_unlock(&pq->hold_queue.lock);
dst_hold(xfrm_dst_path(dst));
@@ -2799,7 +2805,12 @@ static void xfrm_policy_queue_process(struct timer_list *t)
while (!skb_queue_empty(&list)) {
skb = __skb_dequeue(&list);
+ /* Fixup the mark to support VTI. */
+ skb_mark = skb->mark;
+ skb->mark = pol->mark.v;
xfrm_decode_session(skb, &fl, skb_dst(skb)->ops->family);
+ skb->mark = skb_mark;
+
dst_hold(xfrm_dst_path(skb_dst(skb)));
dst = xfrm_lookup(net, xfrm_dst_path(skb_dst(skb)), &fl, skb->sk, 0);
if (IS_ERR(dst)) {
diff --git a/net/xfrm/xfrm_replay.c b/net/xfrm/xfrm_replay.c
index 98943f8d01aa..c6a4338a0d08 100644
--- a/net/xfrm/xfrm_replay.c
+++ b/net/xfrm/xfrm_replay.c
@@ -89,7 +89,8 @@ static int xfrm_replay_overflow(struct xfrm_state *x, struct sk_buff *skb)
if (x->type->flags & XFRM_TYPE_REPLAY_PROT) {
XFRM_SKB_CB(skb)->seq.output.low = ++x->replay.oseq;
XFRM_SKB_CB(skb)->seq.output.hi = 0;
- if (unlikely(x->replay.oseq == 0)) {
+ if (unlikely(x->replay.oseq == 0) &&
+ !(x->props.extra_flags & XFRM_SA_XFLAG_OSEQ_MAY_WRAP)) {
x->replay.oseq--;
xfrm_audit_state_replay_overflow(x, skb);
err = -EOVERFLOW;
@@ -168,7 +169,8 @@ static int xfrm_replay_overflow_bmp(struct xfrm_state *x, struct sk_buff *skb)
if (x->type->flags & XFRM_TYPE_REPLAY_PROT) {
XFRM_SKB_CB(skb)->seq.output.low = ++replay_esn->oseq;
XFRM_SKB_CB(skb)->seq.output.hi = 0;
- if (unlikely(replay_esn->oseq == 0)) {
+ if (unlikely(replay_esn->oseq == 0) &&
+ !(x->props.extra_flags & XFRM_SA_XFLAG_OSEQ_MAY_WRAP)) {
replay_esn->oseq--;
xfrm_audit_state_replay_overflow(x, skb);
err = -EOVERFLOW;
@@ -572,7 +574,8 @@ static int xfrm_replay_overflow_offload(struct xfrm_state *x, struct sk_buff *sk
XFRM_SKB_CB(skb)->seq.output.hi = 0;
xo->seq.hi = 0;
- if (unlikely(oseq < x->replay.oseq)) {
+ if (unlikely(oseq < x->replay.oseq) &&
+ !(x->props.extra_flags & XFRM_SA_XFLAG_OSEQ_MAY_WRAP)) {
xfrm_audit_state_replay_overflow(x, skb);
err = -EOVERFLOW;
@@ -611,7 +614,8 @@ static int xfrm_replay_overflow_offload_bmp(struct xfrm_state *x, struct sk_buff
XFRM_SKB_CB(skb)->seq.output.hi = 0;
xo->seq.hi = 0;
- if (unlikely(oseq < replay_esn->oseq)) {
+ if (unlikely(oseq < replay_esn->oseq) &&
+ !(x->props.extra_flags & XFRM_SA_XFLAG_OSEQ_MAY_WRAP)) {
xfrm_audit_state_replay_overflow(x, skb);
err = -EOVERFLOW;
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2025-01-01 06:30:46 +0000