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PATH: usr / src / kernels / 5.14.0-611.49.1.el9_7.x86_64 / include / net

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _NET_DN_DEV_H
#define _NET_DN_DEV_H

#include <linux/netdevice.h>

struct dn_dev;

struct dn_ifaddr {
	struct dn_ifaddr __rcu *ifa_next;
	struct dn_dev    *ifa_dev;
	__le16            ifa_local;
	__le16            ifa_address;
	__u32             ifa_flags;
	__u8              ifa_scope;
	char              ifa_label[IFNAMSIZ];
	struct rcu_head   rcu;
};

#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  (*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 __rcu *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;
	__u8 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 {
	__u8    msgflg;
	__le16 dstnode;
	__le16 srcnode;
	__u8   forward;
} __packed;

struct dn_long_packet {
	__u8   msgflg;
	__u8   d_area;
	__u8   d_subarea;
	__u8   d_id[6];
	__u8   s_area;
	__u8   s_subarea;
	__u8   s_id[6];
	__u8   nl2;
	__u8   visit_ct;
	__u8   s_class;
	__u8   pt;
} __packed;

/*------------------------- DRP - Routing messages ---------------------*/

struct endnode_hello_message {
	__u8   msgflg;
	__u8   tiver[3];
	__u8   id[6];
	__u8   iinfo;
	__le16 blksize;
	__u8   area;
	__u8   seed[8];
	__u8   neighbor[6];
	__le16 timer;
	__u8   mpd;
	__u8   datalen;
	__u8   data[2];
} __packed;

struct rtnode_hello_message {
	__u8   msgflg;
	__u8   tiver[3];
	__u8   id[6];
	__u8   iinfo;
	__le16  blksize;
	__u8   priority;
	__u8   area;
	__le16  timer;
	__u8   mpd;
} __packed;

void dn_dev_init(void);
void dn_dev_cleanup(void);

int dn_dev_ioctl(unsigned int cmd, void __user *arg);

void dn_dev_devices_off(void);
void dn_dev_devices_on(void);

void dn_dev_init_pkt(struct sk_buff *skb);
void dn_dev_veri_pkt(struct sk_buff *skb);
void dn_dev_hello(struct sk_buff *skb);

void dn_dev_up(struct net_device *);
void dn_dev_down(struct net_device *);

int dn_dev_set_default(struct net_device *dev, int force);
struct net_device *dn_dev_get_default(void);
int dn_dev_bind_default(__le16 *addr);

int register_dnaddr_notifier(struct notifier_block *nb);
int unregister_dnaddr_notifier(struct notifier_block *nb);

static inline int dn_dev_islocal(struct net_device *dev, __le16 addr)
{
	struct dn_dev *dn_db;
	struct dn_ifaddr *ifa;
	int res = 0;

rcu_read_lock();
	dn_db = rcu_dereference(dev->dn_ptr);
	if (dn_db == NULL) {
		printk(KERN_DEBUG "dn_dev_islocal: Called for non DECnet device\n");
		goto out;
	}

for (ifa = rcu_dereference(dn_db->ifa_list);
	     ifa != NULL;
	     ifa = rcu_dereference(ifa->ifa_next))
		if ((addr ^ ifa->ifa_local) == 0) {
			res = 1;
			break;
		}
out:
	rcu_read_unlock();
	return res;
}

#endif /* _NET_DN_DEV_H */

[+] ..
[-] ipcomp.h [edit]
[-] mac80211.h [edit]
[-] switchdev.h [edit]
[-] psample.h [edit]
[-] xdp_sock.h [edit]
[-] xdp.h [edit]
[-] llc_c_ac.h [edit]
[-] af_ieee802154.h [edit]
[-] hwbm.h [edit]
[-] netrom.h [edit]
[-] af_rxrpc.h [edit]
[-] xsk_buff_pool.h [edit]
[-] bonding.h [edit]
[+] page_pool
[-] nl802154.h [edit]
[-] fq_impl.h [edit]
[-] dropreason-core.h [edit]
[-] rsi_91x.h [edit]
[+] netfilter
[-] codel_impl.h [edit]
[-] calipso.h [edit]
[-] llc_sap.h [edit]
[+] caif
[-] xdp_priv.h [edit]
[-] af_unix.h [edit]
[-] rtnetlink.h [edit]
[-] inet_common.h [edit]
[-] if_inet6.h [edit]
[-] ah.h [edit]
[-] netevent.h [edit]
[-] pkt_sched.h [edit]
[-] route.h [edit]
[-] ieee80211_radiotap.h [edit]
[-] bond_options.h [edit]
[-] l3mdev.h [edit]
[-] devlink.h [edit]
[-] fib_notifier.h [edit]
[-] seg6.h [edit]
[-] codel.h [edit]
[-] act_api.h [edit]
[-] inet6_hashtables.h [edit]
[-] rstreason.h [edit]
[-] ipconfig.h [edit]
[-] pkt_cls.h [edit]
[-] rawv6.h [edit]
[-] ip.h [edit]
[-] udplite.h [edit]
[-] fq.h [edit]
[-] dsa.h [edit]
[-] gro.h [edit]
[-] llc_c_ev.h [edit]
[+] netns
[-] timewait_sock.h [edit]
[-] espintcp.h [edit]
[-] llc_s_st.h [edit]
[-] dst_metadata.h [edit]
[-] wext.h [edit]
[-] sock_reuseport.h [edit]
[-] net_debug.h [edit]
[+] 9p
[-] rtnh.h [edit]
[-] tcp_states.h [edit]
[-] inetpeer.h [edit]
[-] flow_offload.h [edit]
[-] x25.h [edit]
[-] ieee802154_netdev.h [edit]
[-] psnap.h [edit]
[-] secure_seq.h [edit]
[-] netlink.h [edit]
[-] ipx.h [edit]
[-] Space.h [edit]
[-] eee.h [edit]
[-] dn_dev.h [edit]
[-] nsh.h [edit]
[-] dsfield.h [edit]
[-] mpls_iptunnel.h [edit]
[-] datalink.h [edit]
[-] llc_c_st.h [edit]
[+] nfc
[-] dst_cache.h [edit]
[-] dn_route.h [edit]
[-] mpls.h [edit]
[-] xfrm.h [edit]
[-] rose.h [edit]
[-] vxlan.h [edit]
[+] bluetooth
[-] kcm.h [edit]
[-] geneve.h [edit]
[-] tun_proto.h [edit]
[-] ipv6_frag.h [edit]
[+] mana
[-] fib_rules.h [edit]
[-] udp_tunnel.h [edit]
[-] rps.h [edit]
[-] x25device.h [edit]
[-] gue.h [edit]
[-] busy_poll.h [edit]
[-] tc_wrapper.h [edit]
[-] ip6_route.h [edit]
[-] icmp.h [edit]
[-] bond_3ad.h [edit]
[-] tls_prot.h [edit]
[-] sock.h [edit]
[-] ax88796.h [edit]
[-] mrp.h [edit]
[-] ip6_fib.h [edit]
[-] red.h [edit]
[-] ila.h [edit]
[-] ip6_tunnel.h [edit]
[-] pie.h [edit]
[-] dropreason.h [edit]
[-] ethoc.h [edit]
[+] tc_act
[-] bpf_sk_storage.h [edit]
[-] dcbevent.h [edit]
[-] regulatory.h [edit]
[-] tls_toe.h [edit]
[-] lapb.h [edit]
[-] codel_qdisc.h [edit]
[-] dn_fib.h [edit]
[-] gtp.h [edit]
[-] strparser.h [edit]
[-] gre.h [edit]
[-] ndisc.h [edit]
[-] dn_nsp.h [edit]
[-] ax25.h [edit]
[-] inet_connection_sock.h [edit]
[-] neighbour.h [edit]
[-] af_vsock.h [edit]
[-] seg6_local.h [edit]
[-] llc_conn.h [edit]
[-] llc.h [edit]
[-] tls.h [edit]
[-] pptp.h [edit]
[+] libeth
[-] failover.h [edit]
[-] dst_ops.h [edit]
[-] inet_dscp.h [edit]
[-] dsa_stubs.h [edit]
[-] mac802154.h [edit]
[-] p8022.h [edit]
[-] gro_cells.h [edit]
[-] request_sock.h [edit]
[-] atmclip.h [edit]
[-] net_ratelimit.h [edit]
[-] firewire.h [edit]
[-] dst.h [edit]
[-] tcx.h [edit]
[-] rpl.h [edit]
[-] tipc.h [edit]
[-] ip_fib.h [edit]
[-] snmp.h [edit]
[-] tcp.h [edit]
[+] iucv
[-] nexthop.h [edit]
[-] mptcp.h [edit]
[-] netdev_queues.h [edit]
[-] protocol.h [edit]
[+] sctp
[-] fou.h [edit]
[-] inet_sock.h [edit]
[-] bond_alb.h [edit]
[-] ipv6.h [edit]
[-] net_trackers.h [edit]
[-] 6lowpan.h [edit]
[-] mld.h [edit]
[-] raw.h [edit]
[-] netdev_rx_queue.h [edit]
[-] garp.h [edit]
[-] cfg80211-wext.h [edit]
[-] checksum.h [edit]
[-] llc_pdu.h [edit]
[-] cfg80211.h [edit]
[-] dn.h [edit]
[-] udp.h [edit]
[-] stp.h [edit]
[-] flow.h [edit]
[-] handshake.h [edit]
[-] transp_v6.h [edit]
[-] llc_s_ac.h [edit]
[-] ip_vs.h [edit]
[-] mip6.h [edit]
[-] sch_generic.h [edit]
[-] ip_tunnels.h [edit]
[-] smc.h [edit]
[-] xdp_sock_drv.h [edit]
[-] inet6_connection_sock.h [edit]
[-] dn_neigh.h [edit]
[-] cipso_ipv4.h [edit]
[-] vsock_addr.h [edit]
[-] dcbnl.h [edit]
[-] ife.h [edit]
[-] lwtunnel.h [edit]
[-] netlabel.h [edit]
[-] compat.h [edit]
[-] gen_stats.h [edit]
[-] genetlink.h [edit]
[-] net_shaper.h [edit]
[-] inet_timewait_sock.h [edit]
[-] cls_cgroup.h [edit]
[-] llc_if.h [edit]
[+] phonet
[-] erspan.h [edit]
[-] inet_frag.h [edit]
[-] inet_ecn.h [edit]
[-] bareudp.h [edit]
[-] slhc_vj.h [edit]
[-] seg6_hmac.h [edit]
[-] inet_hashtables.h [edit]
[-] llc_s_ev.h [edit]
[-] gso.h [edit]
[-] net_failover.h [edit]
[-] iw_handler.h [edit]
[-] selftests.h [edit]
[-] addrconf.h [edit]
[-] lag.h [edit]
[-] esp.h [edit]
[-] ping.h [edit]
[-] net_namespace.h [edit]
[-] ip6_checksum.h [edit]
[-] macsec.h [edit]
[-] scm.h [edit]
[-] arp.h [edit]
[-] tso.h [edit]
[-] netprio_cgroup.h [edit]
[-] ipv6_stubs.h [edit]
[-] flow_dissector.h [edit]
[-] cfg802154.h [edit]
[-] ncsi.h [edit]