2 * DECnet An implementation of the DECnet protocol suite for the LINUX
3 * operating system. DECnet is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
8 * Authors: Steve Whitehouse <SteveW@ACM.org>
9 * Eduardo Marcelo Serrat <emserrat@geocities.com>
12 * Steve Whitehouse : Devices now see incoming frames so they
13 * can mark on who it came from.
14 * Steve Whitehouse : Fixed bug in creating neighbours. Each neighbour
15 * can now have a device specific setup func.
16 * Steve Whitehouse : Added /proc/sys/net/decnet/conf/<dev>/
17 * Steve Whitehouse : Fixed bug which sometimes killed timer
18 * Steve Whitehouse : Multiple ifaddr support
19 * Steve Whitehouse : SIOCGIFCONF is now a compile time option
20 * Steve Whitehouse : /proc/sys/net/decnet/conf/<sys>/forwarding
21 * Steve Whitehouse : Removed timer1 - its a user space issue now
22 * Patrick Caulfield : Fixed router hello message format
25 #include <linux/config.h>
26 #include <linux/net.h>
27 #include <linux/netdevice.h>
28 #include <linux/proc_fs.h>
29 #include <linux/timer.h>
30 #include <linux/string.h>
31 #include <linux/if_arp.h>
32 #include <linux/if_ether.h>
33 #include <linux/init.h>
34 #include <linux/skbuff.h>
35 #include <linux/rtnetlink.h>
36 #include <linux/sysctl.h>
37 #include <asm/uaccess.h>
38 #include <net/neighbour.h>
41 #include <net/dn_dev.h>
42 #include <net/dn_route.h>
43 #include <net/dn_neigh.h>
44 #include <net/dn_fib.h>
46 #define DN_IFREQ_SIZE (sizeof(struct ifreq) - sizeof(struct sockaddr) + sizeof(struct sockaddr_dn))
48 static char dn_rt_all_end_mcast[ETH_ALEN] = {0xAB,0x00,0x00,0x04,0x00,0x00};
49 static char dn_rt_all_rt_mcast[ETH_ALEN] = {0xAB,0x00,0x00,0x03,0x00,0x00};
50 static char dn_hiord[ETH_ALEN] = {0xAA,0x00,0x04,0x00,0x00,0x00};
51 static unsigned char dn_eco_version[3] = {0x02,0x00,0x00};
53 extern struct neigh_table dn_neigh_table;
55 struct net_device *decnet_default_device;
57 static struct dn_dev *dn_dev_create(struct net_device *dev, int *err);
58 static void dn_dev_delete(struct net_device *dev);
59 static void rtmsg_ifa(int event, struct dn_ifaddr *ifa);
61 static int dn_eth_up(struct net_device *);
62 static void dn_send_brd_hello(struct net_device *dev);
64 static void dn_send_ptp_hello(struct net_device *dev);
67 static struct dn_dev_parms dn_dev_list[] = {
69 type: ARPHRD_ETHER, /* Ethernet */
76 ctl_name: NET_DECNET_CONF_ETHER,
78 timer3: dn_send_brd_hello,
81 type: ARPHRD_IPGRE, /* DECnet tunneled over GRE in IP */
88 ctl_name: NET_DECNET_CONF_GRE,
89 timer3: dn_send_brd_hello,
93 type: ARPHRD_X25, /* Bog standard X.25 */
100 ctl_name: NET_DECNET_CONF_X25,
101 timer3: dn_send_ptp_hello,
106 type: ARPHRD_PPP, /* DECnet over PPP */
113 ctl_name: NET_DECNET_CONF_PPP,
114 timer3: dn_send_brd_hello,
119 type: ARPHRD_DDCMP, /* DECnet over DDCMP */
126 ctl_name: NET_DECNET_CONF_DDCMP,
127 timer3: dn_send_ptp_hello,
131 type: ARPHRD_LOOPBACK, /* Loopback interface - always last */
138 ctl_name: NET_DECNET_CONF_LOOPBACK,
139 timer3: dn_send_brd_hello,
143 #define DN_DEV_LIST_SIZE (sizeof(dn_dev_list)/sizeof(struct dn_dev_parms))
145 #define DN_DEV_PARMS_OFFSET(x) ((int) ((char *) &((struct dn_dev_parms *)0)->x))
149 static int min_t2[] = { 1 };
150 static int max_t2[] = { 60 }; /* No max specified, but this seems sensible */
151 static int min_t3[] = { 1 };
152 static int max_t3[] = { 8191 }; /* Must fit in 16 bits when multiplied by BCT3MULT or T3MULT */
154 static int min_priority[1];
155 static int max_priority[] = { 127 }; /* From DECnet spec */
157 static int dn_forwarding_proc(ctl_table *, int, struct file *,
159 static int dn_forwarding_sysctl(ctl_table *table, int *name, int nlen,
160 void *oldval, size_t *oldlenp,
161 void *newval, size_t newlen,
164 static struct dn_dev_sysctl_table {
165 struct ctl_table_header *sysctl_header;
166 ctl_table dn_dev_vars[5];
167 ctl_table dn_dev_dev[2];
168 ctl_table dn_dev_conf_dir[2];
169 ctl_table dn_dev_proto_dir[2];
170 ctl_table dn_dev_root_dir[2];
174 {NET_DECNET_CONF_DEV_FORWARDING, "forwarding",
175 (void *)DN_DEV_PARMS_OFFSET(forwarding),
176 sizeof(int), 0644, NULL,
177 dn_forwarding_proc, dn_forwarding_sysctl,
179 {NET_DECNET_CONF_DEV_PRIORITY, "priority",
180 (void *)DN_DEV_PARMS_OFFSET(priority),
181 sizeof(int), 0644, NULL,
182 proc_dointvec_minmax, sysctl_intvec,
183 NULL, &min_priority, &max_priority},
184 {NET_DECNET_CONF_DEV_T2, "t2", (void *)DN_DEV_PARMS_OFFSET(t2),
185 sizeof(int), 0644, NULL,
186 proc_dointvec_minmax, sysctl_intvec,
187 NULL, &min_t2, &max_t2},
188 {NET_DECNET_CONF_DEV_T3, "t3", (void *)DN_DEV_PARMS_OFFSET(t3),
189 sizeof(int), 0644, NULL,
190 proc_dointvec_minmax, sysctl_intvec,
191 NULL, &min_t3, &max_t3},
194 {{0, "", NULL, 0, 0555, dn_dev_sysctl.dn_dev_vars}, {0}},
195 {{NET_DECNET_CONF, "conf", NULL, 0, 0555, dn_dev_sysctl.dn_dev_dev}, {0}},
196 {{NET_DECNET, "decnet", NULL, 0, 0555, dn_dev_sysctl.dn_dev_conf_dir}, {0}},
197 {{CTL_NET, "net", NULL, 0, 0555, dn_dev_sysctl.dn_dev_proto_dir}, {0}}
200 static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms *parms)
202 struct dn_dev_sysctl_table *t;
205 t = kmalloc(sizeof(*t), GFP_KERNEL);
209 memcpy(t, &dn_dev_sysctl, sizeof(*t));
211 for(i = 0; i < (sizeof(t->dn_dev_vars)/sizeof(t->dn_dev_vars[0]) - 1); i++) {
212 long offset = (long)t->dn_dev_vars[i].data;
213 t->dn_dev_vars[i].data = ((char *)parms) + offset;
214 t->dn_dev_vars[i].de = NULL;
218 t->dn_dev_dev[0].procname = dev->name;
219 t->dn_dev_dev[0].ctl_name = dev->ifindex;
221 t->dn_dev_dev[0].procname = parms->name;
222 t->dn_dev_dev[0].ctl_name = parms->ctl_name;
225 t->dn_dev_dev[0].child = t->dn_dev_vars;
226 t->dn_dev_dev[0].de = NULL;
227 t->dn_dev_conf_dir[0].child = t->dn_dev_dev;
228 t->dn_dev_conf_dir[0].de = NULL;
229 t->dn_dev_proto_dir[0].child = t->dn_dev_conf_dir;
230 t->dn_dev_proto_dir[0].de = NULL;
231 t->dn_dev_root_dir[0].child = t->dn_dev_proto_dir;
232 t->dn_dev_root_dir[0].de = NULL;
233 t->dn_dev_vars[0].extra1 = (void *)dev;
235 t->sysctl_header = register_sysctl_table(t->dn_dev_root_dir, 0);
236 if (t->sysctl_header == NULL)
242 static void dn_dev_sysctl_unregister(struct dn_dev_parms *parms)
245 struct dn_dev_sysctl_table *t = parms->sysctl;
246 parms->sysctl = NULL;
247 unregister_sysctl_table(t->sysctl_header);
253 static int dn_forwarding_proc(ctl_table *table, int write,
255 void *buffer, size_t *lenp)
257 #ifdef CONFIG_DECNET_ROUTER
258 struct net_device *dev = table->extra1;
259 struct dn_dev *dn_db;
263 if (table->extra1 == NULL)
267 old = dn_db->parms.forwarding;
269 err = proc_dointvec(table, write, filep, buffer, lenp);
271 if ((err >= 0) && write) {
272 if (dn_db->parms.forwarding < 0)
273 dn_db->parms.forwarding = 0;
274 if (dn_db->parms.forwarding > 2)
275 dn_db->parms.forwarding = 2;
277 * What an ugly hack this is... its works, just. It
278 * would be nice if sysctl/proc were just that little
279 * bit more flexible so I don't have to write a special
280 * routine, or suffer hacks like this - SJW
282 tmp = dn_db->parms.forwarding;
283 dn_db->parms.forwarding = old;
284 if (dn_db->parms.down)
285 dn_db->parms.down(dev);
286 dn_db->parms.forwarding = tmp;
288 dn_db->parms.up(dev);
297 static int dn_forwarding_sysctl(ctl_table *table, int *name, int nlen,
298 void *oldval, size_t *oldlenp,
299 void *newval, size_t newlen,
302 #ifdef CONFIG_DECNET_ROUTER
303 struct net_device *dev = table->extra1;
304 struct dn_dev *dn_db;
307 if (table->extra1 == NULL)
312 if (newval && newlen) {
313 if (newlen != sizeof(int))
316 if (get_user(value, (int *)newval))
323 if (dn_db->parms.down)
324 dn_db->parms.down(dev);
325 dn_db->parms.forwarding = value;
327 dn_db->parms.up(dev);
336 #else /* CONFIG_SYSCTL */
337 static void dn_dev_sysctl_unregister(struct dn_dev_parms *parms)
340 static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms *parms)
344 #endif /* CONFIG_SYSCTL */
346 static struct dn_ifaddr *dn_dev_alloc_ifa(void)
348 struct dn_ifaddr *ifa;
350 ifa = kmalloc(sizeof(*ifa), GFP_KERNEL);
353 memset(ifa, 0, sizeof(*ifa));
359 static __inline__ void dn_dev_free_ifa(struct dn_ifaddr *ifa)
364 static void dn_dev_del_ifa(struct dn_dev *dn_db, struct dn_ifaddr **ifap, int destroy)
366 struct dn_ifaddr *ifa1 = *ifap;
368 *ifap = ifa1->ifa_next;
370 rtmsg_ifa(RTM_DELADDR, ifa1);
373 dn_dev_free_ifa(ifa1);
375 if (dn_db->ifa_list == NULL)
376 dn_dev_delete(dn_db->dev);
380 static int dn_dev_insert_ifa(struct dn_dev *dn_db, struct dn_ifaddr *ifa)
383 * FIXME: Duplicate check here.
386 ifa->ifa_next = dn_db->ifa_list;
387 dn_db->ifa_list = ifa;
389 rtmsg_ifa(RTM_NEWADDR, ifa);
394 static int dn_dev_set_ifa(struct net_device *dev, struct dn_ifaddr *ifa)
396 struct dn_dev *dn_db = dev->dn_ptr;
400 dn_db = dn_dev_create(dev, &err);
405 ifa->ifa_dev = dn_db;
407 if (dev->flags & IFF_LOOPBACK)
408 ifa->ifa_scope = RT_SCOPE_HOST;
410 return dn_dev_insert_ifa(dn_db, ifa);
414 int dn_dev_ioctl(unsigned int cmd, void *arg)
416 char buffer[DN_IFREQ_SIZE];
417 struct ifreq *ifr = (struct ifreq *)buffer;
418 struct sockaddr_dn *sdn = (struct sockaddr_dn *)&ifr->ifr_addr;
419 struct dn_dev *dn_db;
420 struct net_device *dev;
421 struct dn_ifaddr *ifa = NULL, **ifap = NULL;
425 if (copy_from_user(ifr, arg, DN_IFREQ_SIZE))
427 ifr->ifr_name[IFNAMSIZ-1] = 0;
430 dev_load(ifr->ifr_name);
437 if (!capable(CAP_NET_ADMIN))
439 if (sdn->sdn_family != AF_DECnet)
448 if ((dev = __dev_get_by_name(ifr->ifr_name)) == NULL) {
453 if ((dn_db = dev->dn_ptr) != NULL) {
454 for (ifap = &dn_db->ifa_list; (ifa=*ifap) != NULL; ifap = &ifa->ifa_next)
455 if (strcmp(ifr->ifr_name, ifa->ifa_label) == 0)
459 if (ifa == NULL && cmd != SIOCSIFADDR) {
460 ret = -EADDRNOTAVAIL;
466 *((dn_address *)sdn->sdn_nodeaddr) = ifa->ifa_local;
471 if ((ifa = dn_dev_alloc_ifa()) == NULL) {
475 memcpy(ifa->ifa_label, dev->name, IFNAMSIZ);
477 if (ifa->ifa_local == dn_saddr2dn(sdn))
479 dn_dev_del_ifa(dn_db, ifap, 0);
482 ifa->ifa_local = dn_saddr2dn(sdn);
484 ret = dn_dev_set_ifa(dev, ifa);
492 if (copy_to_user(arg, ifr, DN_IFREQ_SIZE))
498 static struct dn_dev *dn_dev_by_index(int ifindex)
500 struct net_device *dev;
501 struct dn_dev *dn_dev = NULL;
502 dev = dev_get_by_index(ifindex);
504 dn_dev = dev->dn_ptr;
511 static int dn_dev_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
513 struct rtattr **rta = arg;
514 struct dn_dev *dn_db;
515 struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
516 struct dn_ifaddr *ifa, **ifap;
518 if ((dn_db = dn_dev_by_index(ifm->ifa_index)) == NULL)
519 return -EADDRNOTAVAIL;
521 for(ifap = &dn_db->ifa_list; (ifa=*ifap) != NULL; ifap = &ifa->ifa_next) {
522 void *tmp = rta[IFA_LOCAL-1];
523 if ((tmp && memcmp(RTA_DATA(tmp), &ifa->ifa_local, 2)) ||
524 (rta[IFA_LABEL-1] && strcmp(RTA_DATA(rta[IFA_LABEL-1]), ifa->ifa_label)))
527 dn_dev_del_ifa(dn_db, ifap, 1);
531 return -EADDRNOTAVAIL;
534 static int dn_dev_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
536 struct rtattr **rta = arg;
537 struct net_device *dev;
538 struct dn_dev *dn_db;
539 struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
540 struct dn_ifaddr *ifa;
542 if (rta[IFA_LOCAL-1] == NULL)
545 if ((dev = __dev_get_by_index(ifm->ifa_index)) == NULL)
548 if ((dn_db = dev->dn_ptr) == NULL) {
550 dn_db = dn_dev_create(dev, &err);
555 if ((ifa = dn_dev_alloc_ifa()) == NULL)
558 memcpy(&ifa->ifa_local, RTA_DATA(rta[IFA_LOCAL-1]), 2);
559 ifa->ifa_flags = ifm->ifa_flags;
560 ifa->ifa_scope = ifm->ifa_scope;
561 ifa->ifa_dev = dn_db;
562 if (rta[IFA_LABEL-1])
563 memcpy(ifa->ifa_label, RTA_DATA(rta[IFA_LABEL-1]), IFNAMSIZ);
565 memcpy(ifa->ifa_label, dev->name, IFNAMSIZ);
567 return dn_dev_insert_ifa(dn_db, ifa);
570 static int dn_dev_fill_ifaddr(struct sk_buff *skb, struct dn_ifaddr *ifa,
571 u32 pid, u32 seq, int event)
573 struct ifaddrmsg *ifm;
574 struct nlmsghdr *nlh;
575 unsigned char *b = skb->tail;
577 nlh = NLMSG_PUT(skb, pid, seq, event, sizeof(*ifm));
578 ifm = NLMSG_DATA(nlh);
580 ifm->ifa_family = AF_DECnet;
581 ifm->ifa_prefixlen = 16;
582 ifm->ifa_flags = ifa->ifa_flags | IFA_F_PERMANENT;
583 ifm->ifa_scope = ifa->ifa_scope;
584 ifm->ifa_index = ifa->ifa_dev->dev->ifindex;
585 RTA_PUT(skb, IFA_LOCAL, 2, &ifa->ifa_local);
586 if (ifa->ifa_label[0])
587 RTA_PUT(skb, IFA_LABEL, IFNAMSIZ, &ifa->ifa_label);
588 nlh->nlmsg_len = skb->tail - b;
593 skb_trim(skb, b - skb->data);
597 static void rtmsg_ifa(int event, struct dn_ifaddr *ifa)
600 int size = NLMSG_SPACE(sizeof(struct ifaddrmsg)+128);
602 skb = alloc_skb(size, GFP_KERNEL);
604 netlink_set_err(rtnl, 0, RTMGRP_DECnet_IFADDR, ENOBUFS);
607 if (dn_dev_fill_ifaddr(skb, ifa, 0, 0, event) < 0) {
609 netlink_set_err(rtnl, 0, RTMGRP_DECnet_IFADDR, EINVAL);
612 NETLINK_CB(skb).dst_groups = RTMGRP_DECnet_IFADDR;
613 netlink_broadcast(rtnl, skb, 0, RTMGRP_DECnet_IFADDR, GFP_KERNEL);
616 static int dn_dev_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
620 struct net_device *dev;
621 struct dn_dev *dn_db;
622 struct dn_ifaddr *ifa;
625 s_dn_idx = dn_idx = cb->args[1];
626 read_lock(&dev_base_lock);
627 for(dev = dev_base, idx = 0; dev; dev = dev->next) {
628 if ((dn_db = dev->dn_ptr) == NULL)
635 if ((dn_db = dev->dn_ptr) == NULL)
638 for(ifa = dn_db->ifa_list, dn_idx = 0; ifa; ifa = ifa->ifa_next, dn_idx++) {
639 if (dn_idx < s_dn_idx)
642 if (dn_dev_fill_ifaddr(skb, ifa, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, RTM_NEWADDR) <= 0)
647 read_unlock(&dev_base_lock);
649 cb->args[1] = dn_idx;
654 static void dn_send_endnode_hello(struct net_device *dev)
656 struct endnode_hello_message *msg;
657 struct sk_buff *skb = NULL;
658 unsigned short int *pktlen;
659 struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
661 if ((skb = dn_alloc_skb(NULL, sizeof(*msg), GFP_ATOMIC)) == NULL)
666 msg = (struct endnode_hello_message *)skb_put(skb,sizeof(*msg));
669 memcpy(msg->tiver, dn_eco_version, 3);
670 memcpy(msg->id, decnet_ether_address, 6);
671 msg->iinfo = DN_RT_INFO_ENDN;
672 msg->blksize = dn_htons(dn_db->parms.blksize);
674 memset(msg->seed, 0, 8);
675 memcpy(msg->neighbor, dn_hiord, ETH_ALEN);
678 struct dn_neigh *dn = (struct dn_neigh *)dn_db->router;
679 dn_dn2eth(msg->neighbor, dn->addr);
682 msg->timer = dn_htons((unsigned short)dn_db->parms.t3);
685 memset(msg->data, 0xAA, 2);
687 pktlen = (unsigned short *)skb_push(skb,2);
688 *pktlen = dn_htons(skb->len - 2);
690 skb->nh.raw = skb->data;
692 dn_rt_finish_output(skb, dn_rt_all_rt_mcast);
696 #ifdef CONFIG_DECNET_ROUTER
698 #define DRDELAY (5 * HZ)
700 static int dn_am_i_a_router(struct dn_neigh *dn, struct dn_dev *dn_db)
702 /* First check time since device went up */
703 if ((jiffies - dn_db->uptime) < DRDELAY)
706 /* If there is no router, then yes... */
710 /* otherwise only if we have a higher priority or.. */
711 if (dn->priority < dn_db->parms.priority)
714 /* if we have equal priority and a higher node number */
715 if (dn->priority != dn_db->parms.priority)
718 if (dn_ntohs(dn->addr) < dn_ntohs(decnet_address))
724 static void dn_send_router_hello(struct net_device *dev)
727 struct dn_dev *dn_db = dev->dn_ptr;
728 struct dn_neigh *dn = (struct dn_neigh *)dn_db->router;
732 unsigned char *i1, *i2;
733 unsigned short *pktlen;
735 if (dn_db->parms.blksize < (26 + 7))
738 n = dn_db->parms.blksize - 26;
744 size = 2 + 26 + 7 * n;
746 if ((skb = dn_alloc_skb(NULL, size, GFP_ATOMIC)) == NULL)
750 ptr = skb_put(skb, size);
752 *ptr++ = DN_RT_PKT_CNTL | DN_RT_PKT_ERTH;
753 *ptr++ = 2; /* ECO */
756 memcpy(ptr, decnet_ether_address, ETH_ALEN);
758 *ptr++ = dn_db->parms.forwarding == 1 ?
759 DN_RT_INFO_L1RT : DN_RT_INFO_L2RT;
760 *((unsigned short *)ptr) = dn_htons(dn_db->parms.blksize);
762 *ptr++ = dn_db->parms.priority; /* Priority */
763 *ptr++ = 0; /* Area: Reserved */
764 *((unsigned short *)ptr) = dn_htons((unsigned short)dn_db->parms.t3);
766 *ptr++ = 0; /* MPD: Reserved */
768 memset(ptr, 0, 7); /* Name: Reserved */
772 n = dn_neigh_elist(dev, ptr, n);
777 skb_trim(skb, (27 + *i2));
779 pktlen = (unsigned short *)skb_push(skb, 2);
780 *pktlen = dn_htons(skb->len - 2);
782 skb->nh.raw = skb->data;
784 if (dn_am_i_a_router(dn, dn_db)) {
785 struct sk_buff *skb2 = skb_copy(skb, GFP_ATOMIC);
787 dn_rt_finish_output(skb2, dn_rt_all_end_mcast);
791 dn_rt_finish_output(skb, dn_rt_all_rt_mcast);
794 static void dn_send_brd_hello(struct net_device *dev)
796 struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
798 if (dn_db->parms.forwarding == 0)
799 dn_send_endnode_hello(dev);
801 dn_send_router_hello(dev);
804 static void dn_send_brd_hello(struct net_device *dev)
806 dn_send_endnode_hello(dev);
811 static void dn_send_ptp_hello(struct net_device *dev)
814 int size = dev->hard_header_len + 2 + 4 + tdlen;
815 struct sk_buff *skb = dn_alloc_skb(NULL, size, GFP_ATOMIC);
816 struct dn_dev *dn_db = dev->dn_ptr;
819 struct dn_neigh *dn = (struct dn_neigh *)dn_db->router;
825 skb_push(skb, dev->hard_header_len);
826 ptr = skb_put(skb, 2 + 4 + tdlen);
828 *ptr++ = DN_RT_PKT_HELO;
829 *((dn_address *)ptr) = decnet_address;
833 for(i = 0; i < tdlen; i++)
836 if (dn_am_i_a_router(dn, dn_db)) {
837 struct sk_buff *skb2 = skb_copy(skb, GFP_ATOMIC);
839 dn_rt_finish_output(skb2, dn_rt_all_end_mcast);
843 dn_rt_finish_output(skb, dn_rt_all_rt_mcast);
847 static int dn_eth_up(struct net_device *dev)
849 struct dn_dev *dn_db = dev->dn_ptr;
851 if (dn_db->parms.forwarding == 0)
852 dev_mc_add(dev, dn_rt_all_end_mcast, ETH_ALEN, 0);
854 dev_mc_add(dev, dn_rt_all_rt_mcast, ETH_ALEN, 0);
863 static void dn_dev_set_timer(struct net_device *dev);
865 static void dn_dev_timer_func(unsigned long arg)
867 struct net_device *dev = (struct net_device *)arg;
868 struct dn_dev *dn_db = dev->dn_ptr;
870 if (dn_db->t3 <= dn_db->parms.t2) {
871 if (dn_db->parms.timer3)
872 dn_db->parms.timer3(dev);
873 dn_db->t3 = dn_db->parms.t3;
875 dn_db->t3 -= dn_db->parms.t2;
878 dn_dev_set_timer(dev);
881 static void dn_dev_set_timer(struct net_device *dev)
883 struct dn_dev *dn_db = dev->dn_ptr;
885 if (dn_db->parms.t2 > dn_db->parms.t3)
886 dn_db->parms.t2 = dn_db->parms.t3;
888 dn_db->timer.data = (unsigned long)dev;
889 dn_db->timer.function = dn_dev_timer_func;
890 dn_db->timer.expires = jiffies + (dn_db->parms.t2 * HZ);
892 add_timer(&dn_db->timer);
895 struct dn_dev *dn_dev_create(struct net_device *dev, int *err)
898 struct dn_dev_parms *p = dn_dev_list;
899 struct dn_dev *dn_db;
901 for(i = 0; i < DN_DEV_LIST_SIZE; i++, p++) {
902 if (p->type == dev->type)
907 if (i == DN_DEV_LIST_SIZE)
911 if ((dn_db = kmalloc(sizeof(struct dn_dev), GFP_ATOMIC)) == NULL)
914 memset(dn_db, 0, sizeof(struct dn_dev));
915 memcpy(&dn_db->parms, p, sizeof(struct dn_dev_parms));
918 init_timer(&dn_db->timer);
920 memcpy(dn_db->addr, decnet_ether_address, ETH_ALEN); /* To go... */
922 dn_db->uptime = jiffies;
923 if (dn_db->parms.up) {
924 if (dn_db->parms.up(dev) < 0) {
931 dn_db->neigh_parms = neigh_parms_alloc(dev, &dn_neigh_table);
932 /* dn_db->neigh_parms->neigh_setup = dn_db->parms.neigh_setup; */
934 dn_dev_sysctl_register(dev, &dn_db->parms);
936 dn_dev_set_timer(dev);
944 * This processes a device up event. We only start up
945 * the loopback device & ethernet devices with correct
946 * MAC addreses automatically. Others must be started
949 void dn_dev_up(struct net_device *dev)
951 struct dn_ifaddr *ifa;
953 if ((dev->type != ARPHRD_ETHER) && (dev->type != ARPHRD_LOOPBACK))
956 if (dev->type == ARPHRD_ETHER)
957 if (memcmp(dev->dev_addr, decnet_ether_address, ETH_ALEN) != 0)
960 if ((ifa = dn_dev_alloc_ifa()) == NULL)
963 ifa->ifa_local = decnet_address;
965 ifa->ifa_scope = RT_SCOPE_UNIVERSE;
966 strcpy(ifa->ifa_label, dev->name);
968 dn_dev_set_ifa(dev, ifa);
971 static void dn_dev_delete(struct net_device *dev)
973 struct dn_dev *dn_db = dev->dn_ptr;
978 del_timer_sync(&dn_db->timer);
980 dn_dev_sysctl_unregister(&dn_db->parms);
982 neigh_ifdown(&dn_neigh_table, dev);
984 if (dev == decnet_default_device)
985 decnet_default_device = NULL;
987 if (dn_db->parms.down)
988 dn_db->parms.down(dev);
992 neigh_parms_release(&dn_neigh_table, dn_db->neigh_parms);
995 neigh_release(dn_db->router);
997 neigh_release(dn_db->peer);
1002 void dn_dev_down(struct net_device *dev)
1004 struct dn_dev *dn_db = dev->dn_ptr;
1005 struct dn_ifaddr *ifa;
1010 while((ifa = dn_db->ifa_list) != NULL) {
1011 dn_dev_del_ifa(dn_db, &dn_db->ifa_list, 0);
1012 dn_dev_free_ifa(ifa);
1018 void dn_dev_init_pkt(struct sk_buff *skb)
1023 void dn_dev_veri_pkt(struct sk_buff *skb)
1028 void dn_dev_hello(struct sk_buff *skb)
1033 void dn_dev_devices_off(void)
1035 struct net_device *dev;
1037 for(dev = dev_base; dev; dev = dev->next)
1042 void dn_dev_devices_on(void)
1044 struct net_device *dev;
1046 for(dev = dev_base; dev; dev = dev->next) {
1047 if (dev->flags & IFF_UP)
1053 #ifdef CONFIG_DECNET_SIOCGIFCONF
1055 * Now we support multiple addresses per interface.
1056 * Since we don't want to break existing code, you have to enable
1057 * it as a compile time option. Probably you should use the
1058 * rtnetlink interface instead.
1060 int dnet_gifconf(struct net_device *dev, char *buf, int len)
1062 struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
1063 struct dn_ifaddr *ifa;
1064 struct ifreq *ifr = (struct ifreq *)buf;
1067 if ((dn_db == NULL) || ((ifa = dn_db->ifa_list) == NULL))
1070 for(; ifa; ifa = ifa->ifa_next) {
1072 done += sizeof(DN_IFREQ_SIZE);
1075 if (len < DN_IFREQ_SIZE)
1077 memset(ifr, 0, DN_IFREQ_SIZE);
1080 strcpy(ifr->ifr_name, ifa->ifa_label);
1082 strcpy(ifr->ifr_name, dev->name);
1084 (*(struct sockaddr_dn *) &ifr->ifr_addr).sdn_family = AF_DECnet;
1085 (*(struct sockaddr_dn *) &ifr->ifr_addr).sdn_add.a_len = 2;
1086 (*(dn_address *)(*(struct sockaddr_dn *) &ifr->ifr_addr).sdn_add.a_addr) = ifa->ifa_local;
1088 ifr = (struct ifreq *)((char *)ifr + DN_IFREQ_SIZE);
1089 len -= DN_IFREQ_SIZE;
1090 done += DN_IFREQ_SIZE;
1095 #endif /* CONFIG_DECNET_SIOCGIFCONF */
1098 #ifdef CONFIG_PROC_FS
1100 static char *dn_type2asc(char type)
1114 static int decnet_dev_get_info(char *buffer, char **start, off_t offset, int length)
1116 struct dn_dev *dn_db;
1117 struct net_device *dev;
1121 char peer_buf[DN_ASCBUF_LEN];
1122 char router_buf[DN_ASCBUF_LEN];
1125 len += sprintf(buffer, "Name Flags T1 Timer1 T3 Timer3 BlkSize Pri State DevType Router Peer\n");
1127 read_lock(&dev_base_lock);
1128 for (dev = dev_base; dev; dev = dev->next) {
1129 if ((dn_db = (struct dn_dev *)dev->dn_ptr) == NULL)
1132 len += sprintf(buffer + len, "%-8s %1s %04u %04u %04lu %04lu %04hu %03d %02x %-10s %-7s %-7s\n",
1133 dev->name ? dev->name : "???",
1134 dn_type2asc(dn_db->parms.mode),
1136 dn_db->t3, dn_db->parms.t3,
1137 dn_db->parms.blksize,
1138 dn_db->parms.priority,
1139 dn_db->parms.state, dn_db->parms.name,
1140 dn_db->router ? dn_addr2asc(dn_ntohs(*(dn_address *)dn_db->router->primary_key), router_buf) : "",
1141 dn_db->peer ? dn_addr2asc(dn_ntohs(*(dn_address *)dn_db->peer->primary_key), peer_buf) : "");
1150 if (pos > offset + length)
1154 read_unlock(&dev_base_lock);
1156 *start = buffer + (offset - begin);
1157 len -= (offset - begin);
1159 if (len > length) len = length;
1164 #endif /* CONFIG_PROC_FS */
1166 static struct rtnetlink_link dnet_rtnetlink_table[RTM_MAX-RTM_BASE+1] =
1173 { dn_dev_rtm_newaddr, NULL, },
1174 { dn_dev_rtm_deladdr, NULL, },
1175 { NULL, dn_dev_dump_ifaddr, },
1178 #ifdef CONFIG_DECNET_ROUTER
1179 { dn_fib_rtm_newroute, NULL, },
1180 { dn_fib_rtm_delroute, NULL, },
1181 { dn_cache_getroute, dn_fib_dump, },
1186 { dn_cache_getroute, dn_cache_dump, },
1194 #ifdef CONFIG_DECNET_ROUTER
1195 { dn_fib_rtm_newrule, NULL, },
1196 { dn_fib_rtm_delrule, NULL, },
1197 { NULL, dn_fib_dump_rules, },
1207 void __init dn_dev_init(void)
1210 dn_dev_devices_on();
1211 #ifdef CONFIG_DECNET_SIOCGIFCONF
1212 register_gifconf(PF_DECnet, dnet_gifconf);
1213 #endif /* CONFIG_DECNET_SIOCGIFCONF */
1215 rtnetlink_links[PF_DECnet] = dnet_rtnetlink_table;
1217 #ifdef CONFIG_PROC_FS
1218 proc_net_create("decnet_dev", 0, decnet_dev_get_info);
1219 #endif /* CONFIG_PROC_FS */
1221 #ifdef CONFIG_SYSCTL
1224 for(i = 0; i < DN_DEV_LIST_SIZE; i++)
1225 dn_dev_sysctl_register(NULL, &dn_dev_list[i]);
1227 #endif /* CONFIG_SYSCTL */
1230 void __exit dn_dev_cleanup(void)
1232 rtnetlink_links[PF_DECnet] = NULL;
1234 #ifdef CONFIG_DECNET_SIOCGIFCONF
1235 unregister_gifconf(PF_DECnet);
1236 #endif /* CONFIG_DECNET_SIOCGIFCONF */
1238 #ifdef CONFIG_SYSCTL
1241 for(i = 0; i < DN_DEV_LIST_SIZE; i++)
1242 dn_dev_sysctl_unregister(&dn_dev_list[i]);
1244 #endif /* CONFIG_SYSCTL */
1246 proc_net_remove("decnet_dev");
1248 dn_dev_devices_off();