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#ifndef __LINUX_MROUTE_BASE_H
#define __LINUX_MROUTE_BASE_H
#include <linux/netdevice.h>
#include <linux/rhashtable.h>
#include <net/net_namespace.h>
#include <net/sock.h>
/**
* struct vif_device - interface representor for multicast routing
* @dev: network device being used
* @bytes_in: statistic; bytes ingressing
* @bytes_out: statistic; bytes egresing
* @pkt_in: statistic; packets ingressing
* @pkt_out: statistic; packets egressing
* @rate_limit: Traffic shaping (NI)
* @threshold: TTL threshold
* @flags: Control flags
* @link: Physical interface index
* @dev_parent_id: device parent id
* @local: Local address
* @remote: Remote address for tunnels
*/
struct vif_device {
struct net_device *dev;
unsigned long bytes_in, bytes_out;
unsigned long pkt_in, pkt_out;
unsigned long rate_limit;
unsigned char threshold;
unsigned short flags;
int link;
/* Currently only used by ipmr */
struct netdev_phys_item_id dev_parent_id;
__be32 local, remote;
};
#ifndef MAXVIFS
/* This one is nasty; value is defined in uapi using different symbols for
* mroute and morute6 but both map into same 32.
*/
#define MAXVIFS 32
#endif
#define VIF_EXISTS(_mrt, _idx) (!!((_mrt)->vif_table[_idx].dev))
/**
* struct mr_table - a multicast routing table
* @list: entry within a list of multicast routing tables
* @net: net where this table belongs
* @id: identifier of the table
* @mroute_sk: socket associated with the table
* @ipmr_expire_timer: timer for handling unresolved routes
* @mfc_unres_queue: list of unresolved MFC entries
* @vif_table: array containing all possible vifs
* @mfc_hash: Hash table of all resolved routes for easy lookup
* @mfc_cache_list: list of resovled routes for possible traversal
* @maxvif: Identifier of highest value vif currently in use
* @cache_resolve_queue_len: current size of unresolved queue
* @mroute_do_assert: Whether to inform userspace on wrong ingress
* @mroute_do_pim: Whether to receive IGMP PIMv1
* @mroute_reg_vif_num: PIM-device vif index
*/
struct mr_table {
struct list_head list;
possible_net_t net;
u32 id;
struct sock __rcu *mroute_sk;
struct timer_list ipmr_expire_timer;
struct list_head mfc_unres_queue;
struct vif_device vif_table[MAXVIFS];
struct rhltable mfc_hash;
struct list_head mfc_cache_list;
int maxvif;
atomic_t cache_resolve_queue_len;
bool mroute_do_assert;
bool mroute_do_pim;
int mroute_reg_vif_num;
};
#ifdef CONFIG_IP_MROUTE_COMMON
void vif_device_init(struct vif_device *v,
struct net_device *dev,
unsigned long rate_limit,
unsigned char threshold,
unsigned short flags,
unsigned short get_iflink_mask);
struct mr_table *
mr_table_alloc(struct net *net, u32 id,
const struct rhashtable_params *rht_params,
void (*expire_func)(struct timer_list *t),
void (*table_set)(struct mr_table *mrt,
struct net *net));
#else
static inline void vif_device_init(struct vif_device *v,
struct net_device *dev,
unsigned long rate_limit,
unsigned char threshold,
unsigned short flags,
unsigned short get_iflink_mask)
{
}
static inline struct mr_table *
mr_table_alloc(struct net *net, u32 id,
const struct rhashtable_params *rht_params,
void (*expire_func)(struct timer_list *t),
void (*table_set)(struct mr_table *mrt,
struct net *net))
{
return NULL;
}
#endif
#endif
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