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-rw-r--r--include/net/xfrm.h16
-rw-r--r--net/ipv4/ah4.c3
-rw-r--r--net/ipv4/esp4.c3
-rw-r--r--net/ipv4/esp4_offload.c4
-rw-r--r--net/ipv4/ipcomp.c3
-rw-r--r--net/ipv4/xfrm4_tunnel.c3
-rw-r--r--net/ipv6/ah6.c4
-rw-r--r--net/ipv6/esp6.c3
-rw-r--r--net/ipv6/esp6_offload.c4
-rw-r--r--net/ipv6/ipcomp6.c3
-rw-r--r--net/ipv6/mip6.c6
-rw-r--r--net/xfrm/xfrm_state.c179
12 files changed, 150 insertions, 81 deletions
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 812994ad49ac..56b31676e330 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -348,8 +348,16 @@ int __xfrm_state_delete(struct xfrm_state *x);
struct xfrm_state_afinfo {
u8 family;
u8 proto;
- const struct xfrm_type *type_map[IPPROTO_MAX];
- const struct xfrm_type_offload *type_offload_map[IPPROTO_MAX];
+
+ const struct xfrm_type_offload *type_offload_esp;
+
+ const struct xfrm_type *type_esp;
+ const struct xfrm_type *type_ipip;
+ const struct xfrm_type *type_ipip6;
+ const struct xfrm_type *type_comp;
+ const struct xfrm_type *type_ah;
+ const struct xfrm_type *type_routing;
+ const struct xfrm_type *type_dstopts;
int (*output)(struct net *net, struct sock *sk, struct sk_buff *skb);
int (*output_finish)(struct sock *sk, struct sk_buff *skb);
@@ -401,7 +409,7 @@ struct xfrm_type {
};
int xfrm_register_type(const struct xfrm_type *type, unsigned short family);
-int xfrm_unregister_type(const struct xfrm_type *type, unsigned short family);
+void xfrm_unregister_type(const struct xfrm_type *type, unsigned short family);
struct xfrm_type_offload {
char *description;
@@ -413,7 +421,7 @@ struct xfrm_type_offload {
};
int xfrm_register_type_offload(const struct xfrm_type_offload *type, unsigned short family);
-int xfrm_unregister_type_offload(const struct xfrm_type_offload *type, unsigned short family);
+void xfrm_unregister_type_offload(const struct xfrm_type_offload *type, unsigned short family);
static inline int xfrm_af2proto(unsigned int family)
{
diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index 9c3afd550612..974179b3b314 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -590,8 +590,7 @@ static void __exit ah4_fini(void)
{
if (xfrm4_protocol_deregister(&ah4_protocol, IPPROTO_AH) < 0)
pr_info("%s: can't remove protocol\n", __func__);
- if (xfrm_unregister_type(&ah_type, AF_INET) < 0)
- pr_info("%s: can't remove xfrm type\n", __func__);
+ xfrm_unregister_type(&ah_type, AF_INET);
}
module_init(ah4_init);
diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index b9ae95576084..c06562aded11 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -1066,8 +1066,7 @@ static void __exit esp4_fini(void)
{
if (xfrm4_protocol_deregister(&esp4_protocol, IPPROTO_ESP) < 0)
pr_info("%s: can't remove protocol\n", __func__);
- if (xfrm_unregister_type(&esp_type, AF_INET) < 0)
- pr_info("%s: can't remove xfrm type\n", __func__);
+ xfrm_unregister_type(&esp_type, AF_INET);
}
module_init(esp4_init);
diff --git a/net/ipv4/esp4_offload.c b/net/ipv4/esp4_offload.c
index 8edcfa66d1e5..6e5288aef71e 100644
--- a/net/ipv4/esp4_offload.c
+++ b/net/ipv4/esp4_offload.c
@@ -315,9 +315,7 @@ static int __init esp4_offload_init(void)
static void __exit esp4_offload_exit(void)
{
- if (xfrm_unregister_type_offload(&esp_type_offload, AF_INET) < 0)
- pr_info("%s: can't remove xfrm type offload\n", __func__);
-
+ xfrm_unregister_type_offload(&esp_type_offload, AF_INET);
inet_del_offload(&esp4_offload, IPPROTO_ESP);
}
diff --git a/net/ipv4/ipcomp.c b/net/ipv4/ipcomp.c
index 9119d012ba46..ee03f0a55152 100644
--- a/net/ipv4/ipcomp.c
+++ b/net/ipv4/ipcomp.c
@@ -190,8 +190,7 @@ static void __exit ipcomp4_fini(void)
{
if (xfrm4_protocol_deregister(&ipcomp4_protocol, IPPROTO_COMP) < 0)
pr_info("%s: can't remove protocol\n", __func__);
- if (xfrm_unregister_type(&ipcomp_type, AF_INET) < 0)
- pr_info("%s: can't remove xfrm type\n", __func__);
+ xfrm_unregister_type(&ipcomp_type, AF_INET);
}
module_init(ipcomp4_init);
diff --git a/net/ipv4/xfrm4_tunnel.c b/net/ipv4/xfrm4_tunnel.c
index 5d00e54cd319..dc19aff7c2e0 100644
--- a/net/ipv4/xfrm4_tunnel.c
+++ b/net/ipv4/xfrm4_tunnel.c
@@ -108,8 +108,7 @@ static void __exit ipip_fini(void)
if (xfrm4_tunnel_deregister(&xfrm_tunnel_handler, AF_INET))
pr_info("%s: can't remove xfrm handler for AF_INET\n",
__func__);
- if (xfrm_unregister_type(&ipip_type, AF_INET) < 0)
- pr_info("%s: can't remove xfrm type\n", __func__);
+ xfrm_unregister_type(&ipip_type, AF_INET);
}
module_init(ipip_init);
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index 68b9e92e469e..25e1172fd1c3 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -793,9 +793,7 @@ static void __exit ah6_fini(void)
if (xfrm6_protocol_deregister(&ah6_protocol, IPPROTO_AH) < 0)
pr_info("%s: can't remove protocol\n", __func__);
- if (xfrm_unregister_type(&ah6_type, AF_INET6) < 0)
- pr_info("%s: can't remove xfrm type\n", __func__);
-
+ xfrm_unregister_type(&ah6_type, AF_INET6);
}
module_init(ah6_init);
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index ae6a739c5f52..b6c6b3e08836 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -951,8 +951,7 @@ static void __exit esp6_fini(void)
{
if (xfrm6_protocol_deregister(&esp6_protocol, IPPROTO_ESP) < 0)
pr_info("%s: can't remove protocol\n", __func__);
- if (xfrm_unregister_type(&esp6_type, AF_INET6) < 0)
- pr_info("%s: can't remove xfrm type\n", __func__);
+ xfrm_unregister_type(&esp6_type, AF_INET6);
}
module_init(esp6_init);
diff --git a/net/ipv6/esp6_offload.c b/net/ipv6/esp6_offload.c
index d453cf417b03..f2c8f7103332 100644
--- a/net/ipv6/esp6_offload.c
+++ b/net/ipv6/esp6_offload.c
@@ -339,9 +339,7 @@ static int __init esp6_offload_init(void)
static void __exit esp6_offload_exit(void)
{
- if (xfrm_unregister_type_offload(&esp6_type_offload, AF_INET6) < 0)
- pr_info("%s: can't remove xfrm type offload\n", __func__);
-
+ xfrm_unregister_type_offload(&esp6_type_offload, AF_INET6);
inet6_del_offload(&esp6_offload, IPPROTO_ESP);
}
diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c
index 51fd33294c7c..3752bd3e92ce 100644
--- a/net/ipv6/ipcomp6.c
+++ b/net/ipv6/ipcomp6.c
@@ -206,8 +206,7 @@ static void __exit ipcomp6_fini(void)
{
if (xfrm6_protocol_deregister(&ipcomp6_protocol, IPPROTO_COMP) < 0)
pr_info("%s: can't remove protocol\n", __func__);
- if (xfrm_unregister_type(&ipcomp6_type, AF_INET6) < 0)
- pr_info("%s: can't remove xfrm type\n", __func__);
+ xfrm_unregister_type(&ipcomp6_type, AF_INET6);
}
module_init(ipcomp6_init);
diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index 91801432878c..878fcec14949 100644
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -499,10 +499,8 @@ static void __exit mip6_fini(void)
{
if (rawv6_mh_filter_unregister(mip6_mh_filter) < 0)
pr_info("%s: can't remove rawv6 mh filter\n", __func__);
- if (xfrm_unregister_type(&mip6_rthdr_type, AF_INET6) < 0)
- pr_info("%s: can't remove xfrm type(rthdr)\n", __func__);
- if (xfrm_unregister_type(&mip6_destopt_type, AF_INET6) < 0)
- pr_info("%s: can't remove xfrm type(destopt)\n", __func__);
+ xfrm_unregister_type(&mip6_rthdr_type, AF_INET6);
+ xfrm_unregister_type(&mip6_destopt_type, AF_INET6);
}
module_init(mip6_init);
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 3f0950db060a..fd51737f9f17 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -177,63 +177,132 @@ int km_query(struct xfrm_state *x, struct xfrm_tmpl *t, struct xfrm_policy *pol)
static bool km_is_alive(const struct km_event *c);
void km_state_expired(struct xfrm_state *x, int hard, u32 portid);
-static DEFINE_SPINLOCK(xfrm_type_lock);
int xfrm_register_type(const struct xfrm_type *type, unsigned short family)
{
struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family);
- const struct xfrm_type **typemap;
int err = 0;
- if (unlikely(afinfo == NULL))
+ if (!afinfo)
return -EAFNOSUPPORT;
- typemap = afinfo->type_map;
- spin_lock_bh(&xfrm_type_lock);
- if (likely(typemap[type->proto] == NULL))
- typemap[type->proto] = type;
- else
- err = -EEXIST;
- spin_unlock_bh(&xfrm_type_lock);
+#define X(afi, T, name) do { \
+ WARN_ON((afi)->type_ ## name); \
+ (afi)->type_ ## name = (T); \
+ } while (0)
+
+ switch (type->proto) {
+ case IPPROTO_COMP:
+ X(afinfo, type, comp);
+ break;
+ case IPPROTO_AH:
+ X(afinfo, type, ah);
+ break;
+ case IPPROTO_ESP:
+ X(afinfo, type, esp);
+ break;
+ case IPPROTO_IPIP:
+ X(afinfo, type, ipip);
+ break;
+ case IPPROTO_DSTOPTS:
+ X(afinfo, type, dstopts);
+ break;
+ case IPPROTO_ROUTING:
+ X(afinfo, type, routing);
+ break;
+ case IPPROTO_IPV6:
+ X(afinfo, type, ipip6);
+ break;
+ default:
+ WARN_ON(1);
+ err = -EPROTONOSUPPORT;
+ break;
+ }
+#undef X
rcu_read_unlock();
return err;
}
EXPORT_SYMBOL(xfrm_register_type);
-int xfrm_unregister_type(const struct xfrm_type *type, unsigned short family)
+void xfrm_unregister_type(const struct xfrm_type *type, unsigned short family)
{
struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family);
- const struct xfrm_type **typemap;
- int err = 0;
if (unlikely(afinfo == NULL))
- return -EAFNOSUPPORT;
- typemap = afinfo->type_map;
- spin_lock_bh(&xfrm_type_lock);
+ return;
- if (unlikely(typemap[type->proto] != type))
- err = -ENOENT;
- else
- typemap[type->proto] = NULL;
- spin_unlock_bh(&xfrm_type_lock);
+#define X(afi, T, name) do { \
+ WARN_ON((afi)->type_ ## name != (T)); \
+ (afi)->type_ ## name = NULL; \
+ } while (0)
+
+ switch (type->proto) {
+ case IPPROTO_COMP:
+ X(afinfo, type, comp);
+ break;
+ case IPPROTO_AH:
+ X(afinfo, type, ah);
+ break;
+ case IPPROTO_ESP:
+ X(afinfo, type, esp);
+ break;
+ case IPPROTO_IPIP:
+ X(afinfo, type, ipip);
+ break;
+ case IPPROTO_DSTOPTS:
+ X(afinfo, type, dstopts);
+ break;
+ case IPPROTO_ROUTING:
+ X(afinfo, type, routing);
+ break;
+ case IPPROTO_IPV6:
+ X(afinfo, type, ipip6);
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ }
+#undef X
rcu_read_unlock();
- return err;
}
EXPORT_SYMBOL(xfrm_unregister_type);
static const struct xfrm_type *xfrm_get_type(u8 proto, unsigned short family)
{
+ const struct xfrm_type *type = NULL;
struct xfrm_state_afinfo *afinfo;
- const struct xfrm_type **typemap;
- const struct xfrm_type *type;
int modload_attempted = 0;
retry:
afinfo = xfrm_state_get_afinfo(family);
if (unlikely(afinfo == NULL))
return NULL;
- typemap = afinfo->type_map;
- type = READ_ONCE(typemap[proto]);
+ switch (proto) {
+ case IPPROTO_COMP:
+ type = afinfo->type_comp;
+ break;
+ case IPPROTO_AH:
+ type = afinfo->type_ah;
+ break;
+ case IPPROTO_ESP:
+ type = afinfo->type_esp;
+ break;
+ case IPPROTO_IPIP:
+ type = afinfo->type_ipip;
+ break;
+ case IPPROTO_DSTOPTS:
+ type = afinfo->type_dstopts;
+ break;
+ case IPPROTO_ROUTING:
+ type = afinfo->type_routing;
+ break;
+ case IPPROTO_IPV6:
+ type = afinfo->type_ipip6;
+ break;
+ default:
+ break;
+ }
+
if (unlikely(type && !try_module_get(type->owner)))
type = NULL;
@@ -253,65 +322,71 @@ static void xfrm_put_type(const struct xfrm_type *type)
module_put(type->owner);
}
-static DEFINE_SPINLOCK(xfrm_type_offload_lock);
int xfrm_register_type_offload(const struct xfrm_type_offload *type,
unsigned short family)
{
struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family);
- const struct xfrm_type_offload **typemap;
int err = 0;
if (unlikely(afinfo == NULL))
return -EAFNOSUPPORT;
- typemap = afinfo->type_offload_map;
- spin_lock_bh(&xfrm_type_offload_lock);
- if (likely(typemap[type->proto] == NULL))
- typemap[type->proto] = type;
- else
- err = -EEXIST;
- spin_unlock_bh(&xfrm_type_offload_lock);
+ switch (type->proto) {
+ case IPPROTO_ESP:
+ WARN_ON(afinfo->type_offload_esp);
+ afinfo->type_offload_esp = type;
+ break;
+ default:
+ WARN_ON(1);
+ err = -EPROTONOSUPPORT;
+ break;
+ }
+
rcu_read_unlock();
return err;
}
EXPORT_SYMBOL(xfrm_register_type_offload);
-int xfrm_unregister_type_offload(const struct xfrm_type_offload *type,
- unsigned short family)
+void xfrm_unregister_type_offload(const struct xfrm_type_offload *type,
+ unsigned short family)
{
struct xfrm_state_afinfo *afinfo = xfrm_state_get_afinfo(family);
- const struct xfrm_type_offload **typemap;
- int err = 0;
if (unlikely(afinfo == NULL))
- return -EAFNOSUPPORT;
- typemap = afinfo->type_offload_map;
- spin_lock_bh(&xfrm_type_offload_lock);
+ return;
- if (unlikely(typemap[type->proto] != type))
- err = -ENOENT;
- else
- typemap[type->proto] = NULL;
- spin_unlock_bh(&xfrm_type_offload_lock);
+ switch (type->proto) {
+ case IPPROTO_ESP:
+ WARN_ON(afinfo->type_offload_esp != type);
+ afinfo->type_offload_esp = NULL;
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ }
rcu_read_unlock();
- return err;
}
EXPORT_SYMBOL(xfrm_unregister_type_offload);
static const struct xfrm_type_offload *
xfrm_get_type_offload(u8 proto, unsigned short family, bool try_load)
{
+ const struct xfrm_type_offload *type = NULL;
struct xfrm_state_afinfo *afinfo;
- const struct xfrm_type_offload **typemap;
- const struct xfrm_type_offload *type;
retry:
afinfo = xfrm_state_get_afinfo(family);
if (unlikely(afinfo == NULL))
return NULL;
- typemap = afinfo->type_offload_map;
- type = typemap[proto];
+ switch (proto) {
+ case IPPROTO_ESP:
+ type = afinfo->type_offload_esp;
+ break;
+ default:
+ break;
+ }
+
if ((type && !try_module_get(type->owner)))
type = NULL;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.