| /* |
| * 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/ip.h> |
| #include <net/ip6_route.h> |
| #include <net/rtnetlink.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) |
| |
| #define IPVLAN_QBACKLOG_LIMIT 1000 |
| |
| 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; |
| struct ipvl_pcpu_stats __percpu *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; |
| struct work_struct wq; |
| struct sk_buff_head backlog; |
| 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_rcu_bh(const struct net_device *d) |
| { |
| return rcu_dereference_bh(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); |
| } |
| |
| void ipvlan_adjust_mtu(struct ipvl_dev *ipvlan, struct net_device *dev); |
| 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); |
| void ipvlan_process_multicast(struct work_struct *work); |
| 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); |
| struct ipvl_addr *ipvlan_find_addr(const struct ipvl_dev *ipvlan, |
| const void *iaddr, bool is_v6); |
| bool ipvlan_addr_busy(struct ipvl_port *port, 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); |
| #endif /* __IPVLAN_H */ |