mirror of
https://github.com/openvswitch/ovs
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72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
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#ifndef __NET_STT_H
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#define __NET_STT_H 1
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#include <linux/kconfig.h>
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0) && IS_ENABLED(CONFIG_NETFILTER)
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#include <net/ip_tunnels.h>
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#define OVS_STT
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struct stthdr {
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__u8 version;
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__u8 flags;
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__u8 l4_offset;
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__u8 reserved;
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__be16 mss;
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__be16 vlan_tci;
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__be64 key;
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};
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/* Padding after the end of the tunnel headers to provide alignment
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* for inner packet IP header after 14 byte Ethernet header.
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*/
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#define STT_ETH_PAD 2
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#define STT_BASE_HLEN (sizeof(struct stthdr) + STT_ETH_PAD)
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#define STT_HEADER_LEN (sizeof(struct tcphdr) + STT_BASE_HLEN)
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static inline struct stthdr *stt_hdr(const struct sk_buff *skb)
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{
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return (struct stthdr *)(skb_transport_header(skb) +
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sizeof(struct tcphdr));
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}
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struct stt_sock;
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typedef void (stt_rcv_t)(struct stt_sock *stt_sock, struct sk_buff *skb);
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/* @list: Per-net list of STT ports.
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* @rcv: The callback is called on STT packet recv, STT reassembly can generate
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* multiple packets, in this case first packet has tunnel outer header, rest
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* of the packets are inner packet segments with no stt header.
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* @rcv_data: user data.
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* @sock: Fake TCP socket for the STT port.
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*/
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struct stt_sock {
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struct list_head list;
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stt_rcv_t *rcv;
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void *rcv_data;
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struct socket *sock;
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struct rcu_head rcu;
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};
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#define stt_sock_add rpl_stt_sock_add
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struct stt_sock *rpl_stt_sock_add(struct net *net, __be16 port,
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stt_rcv_t *rcv, void *data);
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#define stt_sock_release rpl_stt_sock_release
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void rpl_stt_sock_release(struct stt_sock *stt_sock);
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#define stt_xmit_skb rpl_stt_xmit_skb
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int rpl_stt_xmit_skb(struct sk_buff *skb, struct rtable *rt,
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__be32 src, __be32 dst, __u8 tos,
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__u8 ttl, __be16 df, __be16 src_port, __be16 dst_port,
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__be64 tun_id);
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#define stt_init_module ovs_stt_init_module
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int ovs_stt_init_module(void);
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#define stt_cleanup_module ovs_stt_cleanup_module
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void ovs_stt_cleanup_module(void);
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#endif
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#endif /*ifdef__NET_STT_H */
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