mirror of
https://github.com/openharmony/kernel_common_modules_newip.git
synced 2026-07-20 19:46:24 -04:00
liangbotong
133 lines
4.5 KiB
C
133 lines
4.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (c) 2022 Huawei Device Co., Ltd.
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*
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* NewIP INET
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* An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. NewIP INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Definitions for the NewIP module.
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*
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* Based on include/net/ip.h
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* Based on include/net/protocol.h
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*/
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#ifndef _NET_NEWIP_H
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#define _NET_NEWIP_H
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#include <net/dst.h>
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#include <net/protocol.h>
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#include <linux/errno.h>
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#include <linux/netdevice.h>
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#include <linux/skbuff.h>
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#include <linux/socket.h>
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#include <linux/sockios.h>
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#include <linux/types.h>
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#include <linux/printk.h>
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#include <linux/nip.h>
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#include <net/tcp.h>
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#include <uapi/linux/nip_addr.h>
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#include "if_ninet.h"
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#include "flow_nip.h"
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#define NIP_MAX_SOCKET_NUM 1024
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struct ninet_protocol {
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void (*early_demux)(struct sk_buff *skb);
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int (*handler)(struct sk_buff *skb);
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void (*err_handler)(struct sk_buff *skb,
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struct ninet_skb_parm *opt,
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u8 type, u8 code, int offset, __be32 info);
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unsigned int flags;
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};
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#define NIPCB(skb) ((struct ninet_skb_parm *)&(TCP_SKB_CB(skb)->header.hnip))
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extern const struct ninet_protocol __rcu *ninet_protos[MAX_INET_PROTOS];
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extern const struct proto_ops ninet_dgram_ops;
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extern const struct proto_ops ninet_stream_ops;
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extern struct neigh_table nnd_tbl;
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int tcp_nip_queue_xmit(struct sock *sk, struct sk_buff *skb, struct flowi *fl);
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void tcp_nip_actual_send_reset(struct sock *sk, struct sk_buff *skb, u32 seq,
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u32 ack_seq, u32 win, int rst, u32 priority);
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int nip_rcv(struct sk_buff *skb, struct net_device *dev,
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struct packet_type *pt, struct net_device *orig_dev);
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struct nip_rt_info *nip_dst_alloc(struct net *net, struct net_device *dev,
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int flags);
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static inline bool nip_addr_and_ifindex_eq(const struct nip_addr *a1,
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const struct nip_addr *a2, int ifindex1, int ifindex2)
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{
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return (a1->bitlen == a2->bitlen) && (a1->bitlen <= NIP_ADDR_BIT_LEN_MAX) &&
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(memcmp(&a1->v.u, &a2->v.u, a1->bitlen >> 3) == 0) && (ifindex1 == ifindex2);
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};
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static inline bool nip_addr_eq(const struct nip_addr *a1,
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const struct nip_addr *a2)
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{
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return (a1->bitlen == a2->bitlen) && (a1->bitlen <= NIP_ADDR_BIT_LEN_MAX) &&
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(memcmp(&a1->v.u, &a2->v.u, a1->bitlen >> 3) == 0);
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};
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static inline u32 nip_addr_hash(const struct nip_addr *a)
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{
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u32 tmp[4];
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u8 len = a->bitlen >> 3;
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/* set unused bit to 0 */
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memset(tmp, 0, NIP_ADDR_BIT_LEN_16);
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memcpy(tmp, &a->v.u,
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len > NIP_ADDR_BIT_LEN_16 ? NIP_ADDR_BIT_LEN_16 : len);
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return (__force u32)(tmp[0] ^ tmp[1] ^ tmp[2] ^ tmp[3]);
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}
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int nip_send_skb(struct sk_buff *skb);
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void ninet_destroy_sock(struct sock *sk);
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int nip_datagram_connect_v6_only(struct sock *sk, struct sockaddr *addr, int addr_len);
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int nip_datagram_dst_update(struct sock *sk, bool fix_sk_saddr);
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int ninet_add_protocol(const struct ninet_protocol *prot, unsigned char protocol);
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int ninet_del_protocol(const struct ninet_protocol *prot, unsigned char protocol);
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int ninet_register_protosw(struct inet_protosw *p);
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void ninet_unregister_protosw(struct inet_protosw *p);
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int nip_input(struct sk_buff *skb);
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int nip_output(struct net *net, struct sock *sk, struct sk_buff *skb);
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int nip_forward(struct sk_buff *skb);
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unsigned int tcp_nip_sync_mss(struct sock *sk, u32 pmtu);
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unsigned int tcp_nip_current_mss(struct sock *sk);
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int tcp_nip_send_mss(struct sock *sk, int *size_goal, int flags);
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struct nip_addr *nip_nexthop(struct nip_rt_info *rt, struct nip_addr *daddr);
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struct dst_entry *nip_sk_dst_lookup_flow(struct sock *sk, struct flow_nip *fln);
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struct dst_entry *nip_dst_lookup_flow(struct net *net, const struct sock *sk,
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struct flow_nip *fln,
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const struct nip_addr *final_dst);
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u_char *nip_get_mac(struct nip_addr *nipaddr, struct net_device *dev);
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struct net_device *nip_get_defaultdev(void);
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int nip_init_dev(void);
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int _nip_udp_output(struct sock *sk, void *from, int datalen,
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int transhdrlen, const struct nip_addr *saddr,
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ushort sport, const struct nip_addr *daddr,
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ushort dport, struct dst_entry *dst);
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/* functions defined in nip_sockglue.c */
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int nip_setsockopt(struct sock *sk, int level, int optname, sockptr_t optval,
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unsigned int optlen);
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int nip_getsockopt(struct sock *sk, int level,
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int optname, char __user *optval, int __user *optlen);
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/* functions defined in nip_addrconf.c */
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int nip_addrconf_get_ifaddr(struct net *net, unsigned int cmd, void __user *arg);
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void nip_dbg(const char *fmt, ...);
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#define DEBUG(format, ...) nip_dbg(format, ##__VA_ARGS__)
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#endif
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