[mirror_ubuntu-artful-kernel.git] / drivers / net / ipvlan / ipvlan.h

/*
 * Copyright (c) 2014 Mahesh Bandewar <maheshb@google.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 */
#ifndef __IPVLAN_H
#define __IPVLAN_H

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/rculist.h>
#include <linux/notifier.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/if_arp.h>
#include <linux/if_link.h>
#include <linux/if_vlan.h>
#include <linux/ip.h>
#include <linux/inetdevice.h>
#include <net/rtnetlink.h>
#include <net/gre.h>
#include <net/route.h>
#include <net/addrconf.h>

#define IPVLAN_DRV	"ipvlan"
#define IPV_DRV_VER	"0.1"

#define IPVLAN_HASH_SIZE	(1 << BITS_PER_BYTE)
#define IPVLAN_HASH_MASK	(IPVLAN_HASH_SIZE - 1)

#define IPVLAN_MAC_FILTER_BITS	8
#define IPVLAN_MAC_FILTER_SIZE	(1 << IPVLAN_MAC_FILTER_BITS)
#define IPVLAN_MAC_FILTER_MASK	(IPVLAN_MAC_FILTER_SIZE - 1)

typedef enum {
	IPVL_IPV6 = 0,
	IPVL_ICMPV6,
	IPVL_IPV4,
	IPVL_ARP,
} ipvl_hdr_type;

struct ipvl_pcpu_stats {
	u64			rx_pkts;
	u64			rx_bytes;
	u64			rx_mcast;
	u64			tx_pkts;
	u64			tx_bytes;
	struct u64_stats_sync	syncp;
	u32			rx_errs;
	u32			tx_drps;
};

struct ipvl_port;

struct ipvl_dev {
	struct net_device	*dev;
	struct list_head	pnode;
	struct ipvl_port	*port;
	struct net_device	*phy_dev;
	struct list_head	addrs;
	int			ipv4cnt;
	int			ipv6cnt;
	struct ipvl_pcpu_stats	*pcpu_stats;
	DECLARE_BITMAP(mac_filters, IPVLAN_MAC_FILTER_SIZE);
	netdev_features_t	sfeatures;
	u32			msg_enable;
	u16			mtu_adj;
};

struct ipvl_addr {
	struct ipvl_dev		*master; /* Back pointer to master */
	union {
		struct in6_addr	ip6;	 /* IPv6 address on logical interface */
		struct in_addr	ip4;	 /* IPv4 address on logical interface */
	} ipu;
#define ip6addr	ipu.ip6
#define ip4addr ipu.ip4
	struct hlist_node	hlnode;  /* Hash-table linkage */
	struct list_head	anode;   /* logical-interface linkage */
	struct rcu_head		rcu;
	ipvl_hdr_type		atype;
};

struct ipvl_port {
	struct net_device	*dev;
	struct hlist_head	hlhead[IPVLAN_HASH_SIZE];
	struct list_head	ipvlans;
	struct rcu_head		rcu;
	int			count;
	u16			mode;
};

static inline struct ipvl_port *ipvlan_port_get_rcu(const struct net_device *d)
{
	return rcu_dereference(d->rx_handler_data);
}

static inline struct ipvl_port *ipvlan_port_get_rtnl(const struct net_device *d)
{
	return rtnl_dereference(d->rx_handler_data);
}

static inline bool ipvlan_dev_master(struct net_device *d)
{
	return d->priv_flags & IFF_IPVLAN_MASTER;
}

static inline bool ipvlan_dev_slave(struct net_device *d)
{
	return d->priv_flags & IFF_IPVLAN_SLAVE;
}

void ipvlan_adjust_mtu(struct ipvl_dev *ipvlan, struct net_device *dev);
void ipvlan_set_port_mode(struct ipvl_port *port, u32 nval);
void ipvlan_init_secret(void);
unsigned int ipvlan_mac_hash(const unsigned char *addr);
rx_handler_result_t ipvlan_handle_frame(struct sk_buff **pskb);
int ipvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev);
void ipvlan_ht_addr_add(struct ipvl_dev *ipvlan, struct ipvl_addr *addr);
bool ipvlan_addr_busy(struct ipvl_dev *ipvlan, void *iaddr, bool is_v6);
struct ipvl_addr *ipvlan_ht_addr_lookup(const struct ipvl_port *port,
					const void *iaddr, bool is_v6);
void ipvlan_ht_addr_del(struct ipvl_addr *addr, bool sync);
#endif /* __IPVLAN_H */
Commit	Line	Data
2ad7bf36 MB	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/rtnetlink.h>
	27	#include <net/gre.h>
	28	#include <net/route.h>
	29	#include <net/addrconf.h>
	30
	31	#define IPVLAN_DRV "ipvlan"
	32	#define IPV_DRV_VER "0.1"
	33
	34	#define IPVLAN_HASH_SIZE (1 << BITS_PER_BYTE)
	35	#define IPVLAN_HASH_MASK (IPVLAN_HASH_SIZE - 1)
	36
	37	#define IPVLAN_MAC_FILTER_BITS 8
	38	#define IPVLAN_MAC_FILTER_SIZE (1 << IPVLAN_MAC_FILTER_BITS)
	39	#define IPVLAN_MAC_FILTER_MASK (IPVLAN_MAC_FILTER_SIZE - 1)
	40
	41	typedef enum {
	42	IPVL_IPV6 = 0,
	43	IPVL_ICMPV6,
	44	IPVL_IPV4,
	45	IPVL_ARP,
	46	} ipvl_hdr_type;
	47
	48	struct ipvl_pcpu_stats {
	49	u64 rx_pkts;
	50	u64 rx_bytes;
	51	u64 rx_mcast;
	52	u64 tx_pkts;
	53	u64 tx_bytes;
	54	struct u64_stats_sync syncp;
	55	u32 rx_errs;
	56	u32 tx_drps;
	57	};
	58
	59	struct ipvl_port;
	60
	61	struct ipvl_dev {
	62	struct net_device *dev;
	63	struct list_head pnode;
	64	struct ipvl_port *port;
65	struct net_device *phy_dev;
66	struct list_head addrs;
67	int ipv4cnt;
68	int ipv6cnt;
69	struct ipvl_pcpu_stats *pcpu_stats;
70	DECLARE_BITMAP(mac_filters, IPVLAN_MAC_FILTER_SIZE);
71	netdev_features_t sfeatures;
72	u32 msg_enable;
73	u16 mtu_adj;
74	};
75
76	struct ipvl_addr {
77	struct ipvl_dev master; / Back pointer to master */
78	union {
79	struct in6_addr ip6; /* IPv6 address on logical interface */
80	struct in_addr ip4; /* IPv4 address on logical interface */
81	} ipu;
82	#define ip6addr ipu.ip6
83	#define ip4addr ipu.ip4
84	struct hlist_node hlnode; /* Hash-table linkage */
85	struct list_head anode; /* logical-interface linkage */
86	struct rcu_head rcu;
87	ipvl_hdr_type atype;
88	};
89
90	struct ipvl_port {
91	struct net_device *dev;
92	struct hlist_head hlhead[IPVLAN_HASH_SIZE];
93	struct list_head ipvlans;
94	struct rcu_head rcu;
95	int count;
96	u16 mode;
97	};
98
99	static inline struct ipvl_port ipvlan_port_get_rcu(const struct net_device d)
100	{
101	return rcu_dereference(d->rx_handler_data);
102	}
103
104	static inline struct ipvl_port ipvlan_port_get_rtnl(const struct net_device d)
105	{
106	return rtnl_dereference(d->rx_handler_data);
107	}
108
109	static inline bool ipvlan_dev_master(struct net_device *d)
110	{
111	return d->priv_flags & IFF_IPVLAN_MASTER;
112	}
113
114	static inline bool ipvlan_dev_slave(struct net_device *d)
115	{
116	return d->priv_flags & IFF_IPVLAN_SLAVE;
117	}
118
119	void ipvlan_adjust_mtu(struct ipvl_dev ipvlan, struct net_device dev);
120	void ipvlan_set_port_mode(struct ipvl_port *port, u32 nval);
121	void ipvlan_init_secret(void);
122	unsigned int ipvlan_mac_hash(const unsigned char *addr);
123	rx_handler_result_t ipvlan_handle_frame(struct sk_buff **pskb);
124	int ipvlan_queue_xmit(struct sk_buff skb, struct net_device dev);
125	void ipvlan_ht_addr_add(struct ipvl_dev ipvlan, struct ipvl_addr addr);
126	bool ipvlan_addr_busy(struct ipvl_dev ipvlan, void iaddr, bool is_v6);
127	struct ipvl_addr ipvlan_ht_addr_lookup(const struct ipvl_port port,
128	const void *iaddr, bool is_v6);
129	void ipvlan_ht_addr_del(struct ipvl_addr *addr, bool sync);
130	#endif /* __IPVLAN_H */