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Diffstat (limited to 'include/net/ip_tunnels.h')
-rw-r--r--include/net/ip_tunnels.h139
1 files changed, 119 insertions, 20 deletions
diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
index c286cc2e766e..9a6a08ec7713 100644
--- a/include/net/ip_tunnels.h
+++ b/include/net/ip_tunnels.h
@@ -36,6 +36,24 @@
(sizeof_field(struct ip_tunnel_key, u) - \
sizeof_field(struct ip_tunnel_key, u.ipv4))
+#define __ipt_flag_op(op, ...) \
+ op(__VA_ARGS__, __IP_TUNNEL_FLAG_NUM)
+
+#define IP_TUNNEL_DECLARE_FLAGS(...) \
+ __ipt_flag_op(DECLARE_BITMAP, __VA_ARGS__)
+
+#define ip_tunnel_flags_zero(...) __ipt_flag_op(bitmap_zero, __VA_ARGS__)
+#define ip_tunnel_flags_copy(...) __ipt_flag_op(bitmap_copy, __VA_ARGS__)
+#define ip_tunnel_flags_and(...) __ipt_flag_op(bitmap_and, __VA_ARGS__)
+#define ip_tunnel_flags_or(...) __ipt_flag_op(bitmap_or, __VA_ARGS__)
+
+#define ip_tunnel_flags_empty(...) \
+ __ipt_flag_op(bitmap_empty, __VA_ARGS__)
+#define ip_tunnel_flags_intersect(...) \
+ __ipt_flag_op(bitmap_intersects, __VA_ARGS__)
+#define ip_tunnel_flags_subset(...) \
+ __ipt_flag_op(bitmap_subset, __VA_ARGS__)
+
struct ip_tunnel_key {
__be64 tun_id;
union {
@@ -48,11 +66,11 @@ struct ip_tunnel_key {
struct in6_addr dst;
} ipv6;
} u;
- __be16 tun_flags;
- u8 tos; /* TOS for IPv4, TC for IPv6 */
- u8 ttl; /* TTL for IPv4, HL for IPv6 */
+ IP_TUNNEL_DECLARE_FLAGS(tun_flags);
__be32 label; /* Flow Label for IPv6 */
u32 nhid;
+ u8 tos; /* TOS for IPv4, TC for IPv6 */
+ u8 ttl; /* TTL for IPv4, HL for IPv6 */
__be16 tp_src;
__be16 tp_dst;
__u8 flow_flags;
@@ -110,6 +128,17 @@ struct ip_tunnel_prl_entry {
struct metadata_dst;
+/* Kernel-side variant of ip_tunnel_parm */
+struct ip_tunnel_parm_kern {
+ char name[IFNAMSIZ];
+ IP_TUNNEL_DECLARE_FLAGS(i_flags);
+ IP_TUNNEL_DECLARE_FLAGS(o_flags);
+ __be32 i_key;
+ __be32 o_key;
+ int link;
+ struct iphdr iph;
+};
+
struct ip_tunnel {
struct ip_tunnel __rcu *next;
struct hlist_node hash_node;
@@ -136,7 +165,7 @@ struct ip_tunnel {
struct dst_cache dst_cache;
- struct ip_tunnel_parm parms;
+ struct ip_tunnel_parm_kern parms;
int mlink;
int encap_hlen; /* Encap header length (FOU,GUE) */
@@ -157,7 +186,7 @@ struct ip_tunnel {
};
struct tnl_ptk_info {
- __be16 flags;
+ IP_TUNNEL_DECLARE_FLAGS(flags);
__be16 proto;
__be32 key;
__be32 seq;
@@ -179,11 +208,80 @@ struct ip_tunnel_net {
int type;
};
+static inline void ip_tunnel_set_options_present(unsigned long *flags)
+{
+ IP_TUNNEL_DECLARE_FLAGS(present) = { };
+
+ __set_bit(IP_TUNNEL_GENEVE_OPT_BIT, present);
+ __set_bit(IP_TUNNEL_VXLAN_OPT_BIT, present);
+ __set_bit(IP_TUNNEL_ERSPAN_OPT_BIT, present);
+ __set_bit(IP_TUNNEL_GTP_OPT_BIT, present);
+ __set_bit(IP_TUNNEL_PFCP_OPT_BIT, present);
+
+ ip_tunnel_flags_or(flags, flags, present);
+}
+
+static inline void ip_tunnel_clear_options_present(unsigned long *flags)
+{
+ IP_TUNNEL_DECLARE_FLAGS(present) = { };
+
+ __set_bit(IP_TUNNEL_GENEVE_OPT_BIT, present);
+ __set_bit(IP_TUNNEL_VXLAN_OPT_BIT, present);
+ __set_bit(IP_TUNNEL_ERSPAN_OPT_BIT, present);
+ __set_bit(IP_TUNNEL_GTP_OPT_BIT, present);
+ __set_bit(IP_TUNNEL_PFCP_OPT_BIT, present);
+
+ __ipt_flag_op(bitmap_andnot, flags, flags, present);
+}
+
+static inline bool ip_tunnel_is_options_present(const unsigned long *flags)
+{
+ IP_TUNNEL_DECLARE_FLAGS(present) = { };
+
+ __set_bit(IP_TUNNEL_GENEVE_OPT_BIT, present);
+ __set_bit(IP_TUNNEL_VXLAN_OPT_BIT, present);
+ __set_bit(IP_TUNNEL_ERSPAN_OPT_BIT, present);
+ __set_bit(IP_TUNNEL_GTP_OPT_BIT, present);
+ __set_bit(IP_TUNNEL_PFCP_OPT_BIT, present);
+
+ return ip_tunnel_flags_intersect(flags, present);
+}
+
+static inline bool ip_tunnel_flags_is_be16_compat(const unsigned long *flags)
+{
+ IP_TUNNEL_DECLARE_FLAGS(supp) = { };
+
+ bitmap_set(supp, 0, BITS_PER_TYPE(__be16));
+ __set_bit(IP_TUNNEL_VTI_BIT, supp);
+
+ return ip_tunnel_flags_subset(flags, supp);
+}
+
+static inline void ip_tunnel_flags_from_be16(unsigned long *dst, __be16 flags)
+{
+ ip_tunnel_flags_zero(dst);
+
+ bitmap_write(dst, be16_to_cpu(flags), 0, BITS_PER_TYPE(__be16));
+ __assign_bit(IP_TUNNEL_VTI_BIT, dst, flags & VTI_ISVTI);
+}
+
+static inline __be16 ip_tunnel_flags_to_be16(const unsigned long *flags)
+{
+ __be16 ret;
+
+ ret = cpu_to_be16(bitmap_read(flags, 0, BITS_PER_TYPE(__be16)));
+ if (test_bit(IP_TUNNEL_VTI_BIT, flags))
+ ret |= VTI_ISVTI;
+
+ return ret;
+}
+
static inline void ip_tunnel_key_init(struct ip_tunnel_key *key,
__be32 saddr, __be32 daddr,
u8 tos, u8 ttl, __be32 label,
__be16 tp_src, __be16 tp_dst,
- __be64 tun_id, __be16 tun_flags)
+ __be64 tun_id,
+ const unsigned long *tun_flags)
{
key->tun_id = tun_id;
key->u.ipv4.src = saddr;
@@ -193,7 +291,7 @@ static inline void ip_tunnel_key_init(struct ip_tunnel_key *key,
key->tos = tos;
key->ttl = ttl;
key->label = label;
- key->tun_flags = tun_flags;
+ ip_tunnel_flags_copy(key->tun_flags, tun_flags);
/* For the tunnel types on the top of IPsec, the tp_src and tp_dst of
* the upper tunnel are used.
@@ -214,12 +312,8 @@ ip_tunnel_dst_cache_usable(const struct sk_buff *skb,
{
if (skb->mark)
return false;
- if (!info)
- return true;
- if (info->key.tun_flags & TUNNEL_NOCACHE)
- return false;
- return true;
+ return !info || !test_bit(IP_TUNNEL_NOCACHE_BIT, info->key.tun_flags);
}
static inline unsigned short ip_tunnel_info_af(const struct ip_tunnel_info
@@ -291,14 +385,18 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
const struct iphdr *tnl_params, const u8 protocol);
void ip_md_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
const u8 proto, int tunnel_hlen);
-int ip_tunnel_ctl(struct net_device *dev, struct ip_tunnel_parm *p, int cmd);
+int ip_tunnel_ctl(struct net_device *dev, struct ip_tunnel_parm_kern *p,
+ int cmd);
+bool ip_tunnel_parm_from_user(struct ip_tunnel_parm_kern *kp,
+ const void __user *data);
+bool ip_tunnel_parm_to_user(void __user *data, struct ip_tunnel_parm_kern *kp);
int ip_tunnel_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
void __user *data, int cmd);
int __ip_tunnel_change_mtu(struct net_device *dev, int new_mtu, bool strict);
int ip_tunnel_change_mtu(struct net_device *dev, int new_mtu);
struct ip_tunnel *ip_tunnel_lookup(struct ip_tunnel_net *itn,
- int link, __be16 flags,
+ int link, const unsigned long *flags,
__be32 remote, __be32 local,
__be32 key);
@@ -307,16 +405,16 @@ int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
const struct tnl_ptk_info *tpi, struct metadata_dst *tun_dst,
bool log_ecn_error);
int ip_tunnel_changelink(struct net_device *dev, struct nlattr *tb[],
- struct ip_tunnel_parm *p, __u32 fwmark);
+ struct ip_tunnel_parm_kern *p, __u32 fwmark);
int ip_tunnel_newlink(struct net_device *dev, struct nlattr *tb[],
- struct ip_tunnel_parm *p, __u32 fwmark);
+ struct ip_tunnel_parm_kern *p, __u32 fwmark);
void ip_tunnel_setup(struct net_device *dev, unsigned int net_id);
bool ip_tunnel_netlink_encap_parms(struct nlattr *data[],
struct ip_tunnel_encap *encap);
void ip_tunnel_netlink_parms(struct nlattr *data[],
- struct ip_tunnel_parm *parms);
+ struct ip_tunnel_parm_kern *parms);
extern const struct header_ops ip_tunnel_header_ops;
__be16 ip_tunnel_parse_protocol(const struct sk_buff *skb);
@@ -547,12 +645,13 @@ static inline void ip_tunnel_info_opts_get(void *to,
static inline void ip_tunnel_info_opts_set(struct ip_tunnel_info *info,
const void *from, int len,
- __be16 flags)
+ const unsigned long *flags)
{
info->options_len = len;
if (len > 0) {
memcpy(ip_tunnel_info_opts(info), from, len);
- info->key.tun_flags |= flags;
+ ip_tunnel_flags_or(info->key.tun_flags, info->key.tun_flags,
+ flags);
}
}
@@ -596,7 +695,7 @@ static inline void ip_tunnel_info_opts_get(void *to,
static inline void ip_tunnel_info_opts_set(struct ip_tunnel_info *info,
const void *from, int len,
- __be16 flags)
+ const unsigned long *flags)
{
info->options_len = 0;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-19 01:02:00 +0300