linux/include/net/dn_dev.h
Jan Blunck 6a878184c2 [PATCH] Eliminate __attribute__ ((packed)) warnings for gcc-4.1
Since version 4.1 the gcc is warning about ignored attributes. This patch is
using the equivalent attribute on the struct instead of on each of the
structure or union members.

GCC Manual:
  "Specifying Attributes of Types

   packed
    This attribute, attached to struct or union type definition, specifies
    that
    each member of the structure or union is placed to minimize the memory
    required. When attached to an enum definition, it indicates that the
    smallest integral type should be used.

    Specifying this attribute for struct and union types is equivalent to
    specifying the packed attribute on each of the structure or union
    members."

Signed-off-by: Jan Blunck <jblunck@suse.de>
Cc: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-08 20:14:07 -08:00

195 lines
5.7 KiB
C

#ifndef _NET_DN_DEV_H
#define _NET_DN_DEV_H
struct dn_dev;
struct dn_ifaddr {
struct dn_ifaddr *ifa_next;
struct dn_dev *ifa_dev;
dn_address ifa_local;
dn_address ifa_address;
unsigned char ifa_flags;
unsigned char ifa_scope;
char ifa_label[IFNAMSIZ];
};
#define DN_DEV_S_RU 0 /* Run - working normally */
#define DN_DEV_S_CR 1 /* Circuit Rejected */
#define DN_DEV_S_DS 2 /* Data Link Start */
#define DN_DEV_S_RI 3 /* Routing Layer Initialize */
#define DN_DEV_S_RV 4 /* Routing Layer Verify */
#define DN_DEV_S_RC 5 /* Routing Layer Complete */
#define DN_DEV_S_OF 6 /* Off */
#define DN_DEV_S_HA 7 /* Halt */
/*
* The dn_dev_parms structure contains the set of parameters
* for each device (hence inclusion in the dn_dev structure)
* and an array is used to store the default types of supported
* device (in dn_dev.c).
*
* The type field matches the ARPHRD_ constants and is used in
* searching the list for supported devices when new devices
* come up.
*
* The mode field is used to find out if a device is broadcast,
* multipoint, or pointopoint. Please note that DECnet thinks
* different ways about devices to the rest of the kernel
* so the normal IFF_xxx flags are invalid here. For devices
* which can be any combination of the previously mentioned
* attributes, you can set this on a per device basis by
* installing an up() routine.
*
* The device state field, defines the initial state in which the
* device will come up. In the dn_dev structure, it is the actual
* state.
*
* Things have changed here. I've killed timer1 since it's a user space
* issue for a user space routing deamon to sort out. The kernel does
* not need to be bothered with it.
*
* Timers:
* t2 - Rate limit timer, min time between routing and hello messages
* t3 - Hello timer, send hello messages when it expires
*
* Callbacks:
* up() - Called to initialize device, return value can veto use of
* device with DECnet.
* down() - Called to turn device off when it goes down
* timer3() - Called once for each ifaddr when timer 3 goes off
*
* sysctl - Hook for sysctl things
*
*/
struct dn_dev_parms {
int type; /* ARPHRD_xxx */
int mode; /* Broadcast, Unicast, Mulitpoint */
#define DN_DEV_BCAST 1
#define DN_DEV_UCAST 2
#define DN_DEV_MPOINT 4
int state; /* Initial state */
int forwarding; /* 0=EndNode, 1=L1Router, 2=L2Router */
unsigned long t2; /* Default value of t2 */
unsigned long t3; /* Default value of t3 */
int priority; /* Priority to be a router */
char *name; /* Name for sysctl */
int ctl_name; /* Index for sysctl */
int (*up)(struct net_device *);
void (*down)(struct net_device *);
void (*timer3)(struct net_device *, struct dn_ifaddr *ifa);
void *sysctl;
};
struct dn_dev {
struct dn_ifaddr *ifa_list;
struct net_device *dev;
struct dn_dev_parms parms;
char use_long;
struct timer_list timer;
unsigned long t3;
struct neigh_parms *neigh_parms;
unsigned char addr[ETH_ALEN];
struct neighbour *router; /* Default router on circuit */
struct neighbour *peer; /* Peer on pointopoint links */
unsigned long uptime; /* Time device went up in jiffies */
};
struct dn_short_packet
{
unsigned char msgflg;
unsigned short dstnode;
unsigned short srcnode;
unsigned char forward;
} __attribute__((packed));
struct dn_long_packet
{
unsigned char msgflg;
unsigned char d_area;
unsigned char d_subarea;
unsigned char d_id[6];
unsigned char s_area;
unsigned char s_subarea;
unsigned char s_id[6];
unsigned char nl2;
unsigned char visit_ct;
unsigned char s_class;
unsigned char pt;
} __attribute__((packed));
/*------------------------- DRP - Routing messages ---------------------*/
struct endnode_hello_message
{
unsigned char msgflg;
unsigned char tiver[3];
unsigned char id[6];
unsigned char iinfo;
unsigned short blksize;
unsigned char area;
unsigned char seed[8];
unsigned char neighbor[6];
unsigned short timer;
unsigned char mpd;
unsigned char datalen;
unsigned char data[2];
} __attribute__((packed));
struct rtnode_hello_message
{
unsigned char msgflg;
unsigned char tiver[3];
unsigned char id[6];
unsigned char iinfo;
unsigned short blksize;
unsigned char priority;
unsigned char area;
unsigned short timer;
unsigned char mpd;
} __attribute__((packed));
extern void dn_dev_init(void);
extern void dn_dev_cleanup(void);
extern int dn_dev_ioctl(unsigned int cmd, void __user *arg);
extern void dn_dev_devices_off(void);
extern void dn_dev_devices_on(void);
extern void dn_dev_init_pkt(struct sk_buff *skb);
extern void dn_dev_veri_pkt(struct sk_buff *skb);
extern void dn_dev_hello(struct sk_buff *skb);
extern void dn_dev_up(struct net_device *);
extern void dn_dev_down(struct net_device *);
extern int dn_dev_set_default(struct net_device *dev, int force);
extern struct net_device *dn_dev_get_default(void);
extern int dn_dev_bind_default(dn_address *addr);
extern int register_dnaddr_notifier(struct notifier_block *nb);
extern int unregister_dnaddr_notifier(struct notifier_block *nb);
static inline int dn_dev_islocal(struct net_device *dev, dn_address addr)
{
struct dn_dev *dn_db = dev->dn_ptr;
struct dn_ifaddr *ifa;
if (dn_db == NULL) {
printk(KERN_DEBUG "dn_dev_islocal: Called for non DECnet device\n");
return 0;
}
for(ifa = dn_db->ifa_list; ifa; ifa = ifa->ifa_next)
if ((addr ^ ifa->ifa_local) == 0)
return 1;
return 0;
}
#endif /* _NET_DN_DEV_H */