#include <linux/if_tunnel.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
+#include <linux/socket.h>
#include <linux/types.h>
#include <linux/u64_stats_sync.h>
#include <net/dsfield.h>
#include <net/gro_cells.h>
#include <net/inet_ecn.h>
-#include <net/ip.h>
#include <net/netns/generic.h>
#include <net/rtnetlink.h>
+#include <net/lwtunnel.h>
#if IS_ENABLED(CONFIG_IPV6)
#include <net/ipv6.h>
/* Keep error state on tunnel for 30 sec */
#define IPTUNNEL_ERR_TIMEO (30*HZ)
+/* Used to memset ip_tunnel padding. */
+#define IP_TUNNEL_KEY_SIZE offsetofend(struct ip_tunnel_key, tp_dst)
+
+/* Used to memset ipv4 address padding. */
+#define IP_TUNNEL_KEY_IPV4_PAD offsetofend(struct ip_tunnel_key, u.ipv4.dst)
+#define IP_TUNNEL_KEY_IPV4_PAD_LEN \
+ (FIELD_SIZEOF(struct ip_tunnel_key, u) - \
+ FIELD_SIZEOF(struct ip_tunnel_key, u.ipv4))
+
+struct ip_tunnel_key {
+ __be64 tun_id;
+ union {
+ struct {
+ __be32 src;
+ __be32 dst;
+ } ipv4;
+ struct {
+ struct in6_addr src;
+ 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 */
+ __be16 tp_src;
+ __be16 tp_dst;
+};
+
+/* Flags for ip_tunnel_info mode. */
+#define IP_TUNNEL_INFO_TX 0x01 /* represents tx tunnel parameters */
+#define IP_TUNNEL_INFO_IPV6 0x02 /* key contains IPv6 addresses */
+
+struct ip_tunnel_info {
+ struct ip_tunnel_key key;
+ u8 options_len;
+ u8 mode;
+};
+
/* 6rd prefix/relay information */
#ifdef CONFIG_IPV6_SIT_6RD
struct ip_tunnel_6rd_parm {
#endif
struct ip_tunnel_encap {
- __u16 type;
- __u16 flags;
+ u16 type;
+ u16 flags;
__be16 sport;
__be16 dport;
};
__be32 saddr;
};
+struct metadata_dst;
+
struct ip_tunnel {
struct ip_tunnel __rcu *next;
struct hlist_node hash_node;
* arrived */
/* These four fields used only by GRE */
- __u32 i_seqno; /* The last seen seqno */
- __u32 o_seqno; /* The last output seqno */
+ u32 i_seqno; /* The last seen seqno */
+ u32 o_seqno; /* The last output seqno */
int tun_hlen; /* Precalculated header length */
int mlink;
unsigned int prl_count; /* # of entries in PRL */
int ip_tnl_net_id;
struct gro_cells gro_cells;
+ bool collect_md;
};
#define TUNNEL_CSUM __cpu_to_be16(0x01)
struct ip_tunnel_net {
struct net_device *fb_tunnel_dev;
struct hlist_head tunnels[IP_TNL_HASH_SIZE];
+ struct ip_tunnel __rcu *collect_md_tun;
};
struct ip_tunnel_encap_ops {
int ip_tunnel_encap_del_ops(const struct ip_tunnel_encap_ops *op,
unsigned int num);
+static inline void ip_tunnel_key_init(struct ip_tunnel_key *key,
+ __be32 saddr, __be32 daddr,
+ u8 tos, u8 ttl,
+ __be16 tp_src, __be16 tp_dst,
+ __be64 tun_id, __be16 tun_flags)
+{
+ key->tun_id = tun_id;
+ key->u.ipv4.src = saddr;
+ key->u.ipv4.dst = daddr;
+ memset((unsigned char *)key + IP_TUNNEL_KEY_IPV4_PAD,
+ 0, IP_TUNNEL_KEY_IPV4_PAD_LEN);
+ key->tos = tos;
+ key->ttl = ttl;
+ 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.
+ * E.g: GRE over IPSEC, the tp_src and tp_port are zero.
+ */
+ key->tp_src = tp_src;
+ key->tp_dst = tp_dst;
+
+ /* Clear struct padding. */
+ if (sizeof(*key) != IP_TUNNEL_KEY_SIZE)
+ memset((unsigned char *)key + IP_TUNNEL_KEY_SIZE,
+ 0, sizeof(*key) - IP_TUNNEL_KEY_SIZE);
+}
+
+static inline unsigned short ip_tunnel_info_af(const struct ip_tunnel_info
+ *tun_info)
+{
+ return tun_info->mode & IP_TUNNEL_INFO_IPV6 ? AF_INET6 : AF_INET;
+}
+
#ifdef CONFIG_INET
int ip_tunnel_init(struct net_device *dev);
__be32 key);
int ip_tunnel_rcv(struct ip_tunnel *tunnel, struct sk_buff *skb,
- const struct tnl_ptk_info *tpi, bool log_ecn_error);
+ 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);
int ip_tunnel_newlink(struct net_device *dev, struct nlattr *tb[],
int iptunnel_pull_header(struct sk_buff *skb, int hdr_len, __be16 inner_proto);
int iptunnel_xmit(struct sock *sk, struct rtable *rt, struct sk_buff *skb,
- __be32 src, __be32 dst, __u8 proto,
- __u8 tos, __u8 ttl, __be16 df, bool xnet);
+ __be32 src, __be32 dst, u8 proto,
+ u8 tos, u8 ttl, __be16 df, bool xnet);
+struct metadata_dst *iptunnel_metadata_reply(struct metadata_dst *md,
+ gfp_t flags);
struct sk_buff *iptunnel_handle_offloads(struct sk_buff *skb, bool gre_csum,
int gso_type_mask);
struct pcpu_sw_netstats __percpu *stats)
{
if (err > 0) {
- struct pcpu_sw_netstats *tstats = this_cpu_ptr(stats);
+ struct pcpu_sw_netstats *tstats = get_cpu_ptr(stats);
u64_stats_update_begin(&tstats->syncp);
tstats->tx_bytes += err;
tstats->tx_packets++;
u64_stats_update_end(&tstats->syncp);
+ put_cpu_ptr(tstats);
} else if (err < 0) {
err_stats->tx_errors++;
err_stats->tx_aborted_errors++;
}
}
+static inline void *ip_tunnel_info_opts(struct ip_tunnel_info *info)
+{
+ return info + 1;
+}
+
+static inline void ip_tunnel_info_opts_get(void *to,
+ const struct ip_tunnel_info *info)
+{
+ memcpy(to, info + 1, info->options_len);
+}
+
+static inline void ip_tunnel_info_opts_set(struct ip_tunnel_info *info,
+ const void *from, int len)
+{
+ memcpy(ip_tunnel_info_opts(info), from, len);
+ info->options_len = len;
+}
+
+static inline struct ip_tunnel_info *lwt_tun_info(struct lwtunnel_state *lwtstate)
+{
+ return (struct ip_tunnel_info *)lwtstate->data;
+}
+
+extern struct static_key ip_tunnel_metadata_cnt;
+
+/* Returns > 0 if metadata should be collected */
+static inline int ip_tunnel_collect_metadata(void)
+{
+ return static_key_false(&ip_tunnel_metadata_cnt);
+}
+
+void __init ip_tunnel_core_init(void);
+
+void ip_tunnel_need_metadata(void);
+void ip_tunnel_unneed_metadata(void);
+
+#else /* CONFIG_INET */
+
+static inline struct ip_tunnel_info *lwt_tun_info(struct lwtunnel_state *lwtstate)
+{
+ return NULL;
+}
+
+static inline void ip_tunnel_need_metadata(void)
+{
+}
+
+static inline void ip_tunnel_unneed_metadata(void)
+{
+}
+
#endif /* CONFIG_INET */
#endif /* __NET_IP_TUNNELS_H */
Code Review / kvmfornfv.git / blobdiff