tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (c) 2014 Mahesh Bandewar <maheshb@google.com>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of
7 * the License, or (at your option) any later version.
8 *
9 */
10#ifndef __IPVLAN_H
11#define __IPVLAN_H
12
13#include <linux/kernel.h>
14#include <linux/types.h>
15#include <linux/module.h>
16#include <linux/init.h>
17#include <linux/rculist.h>
18#include <linux/notifier.h>
19#include <linux/netdevice.h>
20#include <linux/etherdevice.h>
21#include <linux/if_arp.h>
22#include <linux/if_link.h>
23#include <linux/if_vlan.h>
24#include <linux/ip.h>
25#include <linux/inetdevice.h>
26#include <net/ip.h>
27#include <net/ip6_route.h>
28#include <net/rtnetlink.h>
29#include <net/route.h>
30#include <net/addrconf.h>
31
32#define IPVLAN_DRV "ipvlan"
33#define IPV_DRV_VER "0.1"
34
35#define IPVLAN_HASH_SIZE (1 << BITS_PER_BYTE)
36#define IPVLAN_HASH_MASK (IPVLAN_HASH_SIZE - 1)
37
38#define IPVLAN_MAC_FILTER_BITS 8
39#define IPVLAN_MAC_FILTER_SIZE (1 << IPVLAN_MAC_FILTER_BITS)
40#define IPVLAN_MAC_FILTER_MASK (IPVLAN_MAC_FILTER_SIZE - 1)
41
42#define IPVLAN_QBACKLOG_LIMIT 1000
43
44typedef enum {
45 IPVL_IPV6 = 0,
46 IPVL_ICMPV6,
47 IPVL_IPV4,
48 IPVL_ARP,
49} ipvl_hdr_type;
50
51struct ipvl_pcpu_stats {
52 u64 rx_pkts;
53 u64 rx_bytes;
54 u64 rx_mcast;
55 u64 tx_pkts;
56 u64 tx_bytes;
57 struct u64_stats_sync syncp;
58 u32 rx_errs;
59 u32 tx_drps;
60};
61
62struct ipvl_port;
63
64struct ipvl_dev {
65 struct net_device *dev;
66 struct list_head pnode;
67 struct ipvl_port *port;
68 struct net_device *phy_dev;
69 struct list_head addrs;
70 struct ipvl_pcpu_stats __percpu *pcpu_stats;
71 DECLARE_BITMAP(mac_filters, IPVLAN_MAC_FILTER_SIZE);
72 netdev_features_t sfeatures;
73 u32 msg_enable;
74 u16 mtu_adj;
75};
76
77struct ipvl_addr {
78 struct ipvl_dev *master; /* Back pointer to master */
79 union {
80 struct in6_addr ip6; /* IPv6 address on logical interface */
81 struct in_addr ip4; /* IPv4 address on logical interface */
82 } ipu;
83#define ip6addr ipu.ip6
84#define ip4addr ipu.ip4
85 struct hlist_node hlnode; /* Hash-table linkage */
86 struct list_head anode; /* logical-interface linkage */
87 ipvl_hdr_type atype;
88 struct rcu_head rcu;
89};
90
91struct ipvl_port {
92 struct net_device *dev;
93 struct hlist_head hlhead[IPVLAN_HASH_SIZE];
94 struct list_head ipvlans;
95 u16 mode;
96 struct work_struct wq;
97 struct sk_buff_head backlog;
98 int count;
99 struct rcu_head rcu;
100};
101
102static inline struct ipvl_port *ipvlan_port_get_rcu(const struct net_device *d)
103{
104 return rcu_dereference(d->rx_handler_data);
105}
106
107static inline struct ipvl_port *ipvlan_port_get_rcu_bh(const struct net_device *d)
108{
109 return rcu_dereference_bh(d->rx_handler_data);
110}
111
112static inline struct ipvl_port *ipvlan_port_get_rtnl(const struct net_device *d)
113{
114 return rtnl_dereference(d->rx_handler_data);
115}
116
117void ipvlan_init_secret(void);
118unsigned int ipvlan_mac_hash(const unsigned char *addr);
119rx_handler_result_t ipvlan_handle_frame(struct sk_buff **pskb);
120void ipvlan_process_multicast(struct work_struct *work);
121int ipvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev);
122void ipvlan_ht_addr_add(struct ipvl_dev *ipvlan, struct ipvl_addr *addr);
123struct ipvl_addr *ipvlan_find_addr(const struct ipvl_dev *ipvlan,
124 const void *iaddr, bool is_v6);
125bool ipvlan_addr_busy(struct ipvl_port *port, void *iaddr, bool is_v6);
126void ipvlan_ht_addr_del(struct ipvl_addr *addr);
127#endif /* __IPVLAN_H */