Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
new file mode 100644
index 0000000..c2a0346
--- /dev/null
+++ b/net/decnet/dn_dev.c
@@ -0,0 +1,1481 @@
+/*
+ * DECnet An implementation of the DECnet protocol suite for the LINUX
+ * operating system. DECnet is implemented using the BSD Socket
+ * interface as the means of communication with the user level.
+ *
+ * DECnet Device Layer
+ *
+ * Authors: Steve Whitehouse <SteveW@ACM.org>
+ * Eduardo Marcelo Serrat <emserrat@geocities.com>
+ *
+ * Changes:
+ * Steve Whitehouse : Devices now see incoming frames so they
+ * can mark on who it came from.
+ * Steve Whitehouse : Fixed bug in creating neighbours. Each neighbour
+ * can now have a device specific setup func.
+ * Steve Whitehouse : Added /proc/sys/net/decnet/conf/<dev>/
+ * Steve Whitehouse : Fixed bug which sometimes killed timer
+ * Steve Whitehouse : Multiple ifaddr support
+ * Steve Whitehouse : SIOCGIFCONF is now a compile time option
+ * Steve Whitehouse : /proc/sys/net/decnet/conf/<sys>/forwarding
+ * Steve Whitehouse : Removed timer1 - it's a user space issue now
+ * Patrick Caulfield : Fixed router hello message format
+ * Steve Whitehouse : Got rid of constant sizes for blksize for
+ * devices. All mtu based now.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/net.h>
+#include <linux/netdevice.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/timer.h>
+#include <linux/string.h>
+#include <linux/if_arp.h>
+#include <linux/if_ether.h>
+#include <linux/skbuff.h>
+#include <linux/rtnetlink.h>
+#include <linux/sysctl.h>
+#include <linux/notifier.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <net/neighbour.h>
+#include <net/dst.h>
+#include <net/flow.h>
+#include <net/dn.h>
+#include <net/dn_dev.h>
+#include <net/dn_route.h>
+#include <net/dn_neigh.h>
+#include <net/dn_fib.h>
+
+#define DN_IFREQ_SIZE (sizeof(struct ifreq) - sizeof(struct sockaddr) + sizeof(struct sockaddr_dn))
+
+static char dn_rt_all_end_mcast[ETH_ALEN] = {0xAB,0x00,0x00,0x04,0x00,0x00};
+static char dn_rt_all_rt_mcast[ETH_ALEN] = {0xAB,0x00,0x00,0x03,0x00,0x00};
+static char dn_hiord[ETH_ALEN] = {0xAA,0x00,0x04,0x00,0x00,0x00};
+static unsigned char dn_eco_version[3] = {0x02,0x00,0x00};
+
+extern struct neigh_table dn_neigh_table;
+
+/*
+ * decnet_address is kept in network order.
+ */
+dn_address decnet_address = 0;
+
+static DEFINE_RWLOCK(dndev_lock);
+static struct net_device *decnet_default_device;
+static struct notifier_block *dnaddr_chain;
+
+static struct dn_dev *dn_dev_create(struct net_device *dev, int *err);
+static void dn_dev_delete(struct net_device *dev);
+static void rtmsg_ifa(int event, struct dn_ifaddr *ifa);
+
+static int dn_eth_up(struct net_device *);
+static void dn_eth_down(struct net_device *);
+static void dn_send_brd_hello(struct net_device *dev, struct dn_ifaddr *ifa);
+static void dn_send_ptp_hello(struct net_device *dev, struct dn_ifaddr *ifa);
+
+static struct dn_dev_parms dn_dev_list[] = {
+{
+ .type = ARPHRD_ETHER, /* Ethernet */
+ .mode = DN_DEV_BCAST,
+ .state = DN_DEV_S_RU,
+ .t2 = 1,
+ .t3 = 10,
+ .name = "ethernet",
+ .ctl_name = NET_DECNET_CONF_ETHER,
+ .up = dn_eth_up,
+ .down = dn_eth_down,
+ .timer3 = dn_send_brd_hello,
+},
+{
+ .type = ARPHRD_IPGRE, /* DECnet tunneled over GRE in IP */
+ .mode = DN_DEV_BCAST,
+ .state = DN_DEV_S_RU,
+ .t2 = 1,
+ .t3 = 10,
+ .name = "ipgre",
+ .ctl_name = NET_DECNET_CONF_GRE,
+ .timer3 = dn_send_brd_hello,
+},
+#if 0
+{
+ .type = ARPHRD_X25, /* Bog standard X.25 */
+ .mode = DN_DEV_UCAST,
+ .state = DN_DEV_S_DS,
+ .t2 = 1,
+ .t3 = 120,
+ .name = "x25",
+ .ctl_name = NET_DECNET_CONF_X25,
+ .timer3 = dn_send_ptp_hello,
+},
+#endif
+#if 0
+{
+ .type = ARPHRD_PPP, /* DECnet over PPP */
+ .mode = DN_DEV_BCAST,
+ .state = DN_DEV_S_RU,
+ .t2 = 1,
+ .t3 = 10,
+ .name = "ppp",
+ .ctl_name = NET_DECNET_CONF_PPP,
+ .timer3 = dn_send_brd_hello,
+},
+#endif
+{
+ .type = ARPHRD_DDCMP, /* DECnet over DDCMP */
+ .mode = DN_DEV_UCAST,
+ .state = DN_DEV_S_DS,
+ .t2 = 1,
+ .t3 = 120,
+ .name = "ddcmp",
+ .ctl_name = NET_DECNET_CONF_DDCMP,
+ .timer3 = dn_send_ptp_hello,
+},
+{
+ .type = ARPHRD_LOOPBACK, /* Loopback interface - always last */
+ .mode = DN_DEV_BCAST,
+ .state = DN_DEV_S_RU,
+ .t2 = 1,
+ .t3 = 10,
+ .name = "loopback",
+ .ctl_name = NET_DECNET_CONF_LOOPBACK,
+ .timer3 = dn_send_brd_hello,
+}
+};
+
+#define DN_DEV_LIST_SIZE (sizeof(dn_dev_list)/sizeof(struct dn_dev_parms))
+
+#define DN_DEV_PARMS_OFFSET(x) ((int) ((char *) &((struct dn_dev_parms *)0)->x))
+
+#ifdef CONFIG_SYSCTL
+
+static int min_t2[] = { 1 };
+static int max_t2[] = { 60 }; /* No max specified, but this seems sensible */
+static int min_t3[] = { 1 };
+static int max_t3[] = { 8191 }; /* Must fit in 16 bits when multiplied by BCT3MULT or T3MULT */
+
+static int min_priority[1];
+static int max_priority[] = { 127 }; /* From DECnet spec */
+
+static int dn_forwarding_proc(ctl_table *, int, struct file *,
+ void __user *, size_t *, loff_t *);
+static int dn_forwarding_sysctl(ctl_table *table, int __user *name, int nlen,
+ void __user *oldval, size_t __user *oldlenp,
+ void __user *newval, size_t newlen,
+ void **context);
+
+static struct dn_dev_sysctl_table {
+ struct ctl_table_header *sysctl_header;
+ ctl_table dn_dev_vars[5];
+ ctl_table dn_dev_dev[2];
+ ctl_table dn_dev_conf_dir[2];
+ ctl_table dn_dev_proto_dir[2];
+ ctl_table dn_dev_root_dir[2];
+} dn_dev_sysctl = {
+ NULL,
+ {
+ {
+ .ctl_name = NET_DECNET_CONF_DEV_FORWARDING,
+ .procname = "forwarding",
+ .data = (void *)DN_DEV_PARMS_OFFSET(forwarding),
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = dn_forwarding_proc,
+ .strategy = dn_forwarding_sysctl,
+ },
+ {
+ .ctl_name = NET_DECNET_CONF_DEV_PRIORITY,
+ .procname = "priority",
+ .data = (void *)DN_DEV_PARMS_OFFSET(priority),
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .strategy = sysctl_intvec,
+ .extra1 = &min_priority,
+ .extra2 = &max_priority
+ },
+ {
+ .ctl_name = NET_DECNET_CONF_DEV_T2,
+ .procname = "t2",
+ .data = (void *)DN_DEV_PARMS_OFFSET(t2),
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .strategy = sysctl_intvec,
+ .extra1 = &min_t2,
+ .extra2 = &max_t2
+ },
+ {
+ .ctl_name = NET_DECNET_CONF_DEV_T3,
+ .procname = "t3",
+ .data = (void *)DN_DEV_PARMS_OFFSET(t3),
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .strategy = sysctl_intvec,
+ .extra1 = &min_t3,
+ .extra2 = &max_t3
+ },
+ {0}
+ },
+ {{
+ .ctl_name = 0,
+ .procname = "",
+ .mode = 0555,
+ .child = dn_dev_sysctl.dn_dev_vars
+ }, {0}},
+ {{
+ .ctl_name = NET_DECNET_CONF,
+ .procname = "conf",
+ .mode = 0555,
+ .child = dn_dev_sysctl.dn_dev_dev
+ }, {0}},
+ {{
+ .ctl_name = NET_DECNET,
+ .procname = "decnet",
+ .mode = 0555,
+ .child = dn_dev_sysctl.dn_dev_conf_dir
+ }, {0}},
+ {{
+ .ctl_name = CTL_NET,
+ .procname = "net",
+ .mode = 0555,
+ .child = dn_dev_sysctl.dn_dev_proto_dir
+ }, {0}}
+};
+
+static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms *parms)
+{
+ struct dn_dev_sysctl_table *t;
+ int i;
+
+ t = kmalloc(sizeof(*t), GFP_KERNEL);
+ if (t == NULL)
+ return;
+
+ memcpy(t, &dn_dev_sysctl, sizeof(*t));
+
+ for(i = 0; i < ARRAY_SIZE(t->dn_dev_vars) - 1; i++) {
+ long offset = (long)t->dn_dev_vars[i].data;
+ t->dn_dev_vars[i].data = ((char *)parms) + offset;
+ t->dn_dev_vars[i].de = NULL;
+ }
+
+ if (dev) {
+ t->dn_dev_dev[0].procname = dev->name;
+ t->dn_dev_dev[0].ctl_name = dev->ifindex;
+ } else {
+ t->dn_dev_dev[0].procname = parms->name;
+ t->dn_dev_dev[0].ctl_name = parms->ctl_name;
+ }
+
+ t->dn_dev_dev[0].child = t->dn_dev_vars;
+ t->dn_dev_dev[0].de = NULL;
+ t->dn_dev_conf_dir[0].child = t->dn_dev_dev;
+ t->dn_dev_conf_dir[0].de = NULL;
+ t->dn_dev_proto_dir[0].child = t->dn_dev_conf_dir;
+ t->dn_dev_proto_dir[0].de = NULL;
+ t->dn_dev_root_dir[0].child = t->dn_dev_proto_dir;
+ t->dn_dev_root_dir[0].de = NULL;
+ t->dn_dev_vars[0].extra1 = (void *)dev;
+
+ t->sysctl_header = register_sysctl_table(t->dn_dev_root_dir, 0);
+ if (t->sysctl_header == NULL)
+ kfree(t);
+ else
+ parms->sysctl = t;
+}
+
+static void dn_dev_sysctl_unregister(struct dn_dev_parms *parms)
+{
+ if (parms->sysctl) {
+ struct dn_dev_sysctl_table *t = parms->sysctl;
+ parms->sysctl = NULL;
+ unregister_sysctl_table(t->sysctl_header);
+ kfree(t);
+ }
+}
+
+static int dn_forwarding_proc(ctl_table *table, int write,
+ struct file *filep,
+ void __user *buffer,
+ size_t *lenp, loff_t *ppos)
+{
+#ifdef CONFIG_DECNET_ROUTER
+ struct net_device *dev = table->extra1;
+ struct dn_dev *dn_db;
+ int err;
+ int tmp, old;
+
+ if (table->extra1 == NULL)
+ return -EINVAL;
+
+ dn_db = dev->dn_ptr;
+ old = dn_db->parms.forwarding;
+
+ err = proc_dointvec(table, write, filep, buffer, lenp, ppos);
+
+ if ((err >= 0) && write) {
+ if (dn_db->parms.forwarding < 0)
+ dn_db->parms.forwarding = 0;
+ if (dn_db->parms.forwarding > 2)
+ dn_db->parms.forwarding = 2;
+ /*
+ * What an ugly hack this is... its works, just. It
+ * would be nice if sysctl/proc were just that little
+ * bit more flexible so I don't have to write a special
+ * routine, or suffer hacks like this - SJW
+ */
+ tmp = dn_db->parms.forwarding;
+ dn_db->parms.forwarding = old;
+ if (dn_db->parms.down)
+ dn_db->parms.down(dev);
+ dn_db->parms.forwarding = tmp;
+ if (dn_db->parms.up)
+ dn_db->parms.up(dev);
+ }
+
+ return err;
+#else
+ return -EINVAL;
+#endif
+}
+
+static int dn_forwarding_sysctl(ctl_table *table, int __user *name, int nlen,
+ void __user *oldval, size_t __user *oldlenp,
+ void __user *newval, size_t newlen,
+ void **context)
+{
+#ifdef CONFIG_DECNET_ROUTER
+ struct net_device *dev = table->extra1;
+ struct dn_dev *dn_db;
+ int value;
+
+ if (table->extra1 == NULL)
+ return -EINVAL;
+
+ dn_db = dev->dn_ptr;
+
+ if (newval && newlen) {
+ if (newlen != sizeof(int))
+ return -EINVAL;
+
+ if (get_user(value, (int __user *)newval))
+ return -EFAULT;
+ if (value < 0)
+ return -EINVAL;
+ if (value > 2)
+ return -EINVAL;
+
+ if (dn_db->parms.down)
+ dn_db->parms.down(dev);
+ dn_db->parms.forwarding = value;
+ if (dn_db->parms.up)
+ dn_db->parms.up(dev);
+ }
+
+ return 0;
+#else
+ return -EINVAL;
+#endif
+}
+
+#else /* CONFIG_SYSCTL */
+static void dn_dev_sysctl_unregister(struct dn_dev_parms *parms)
+{
+}
+static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms *parms)
+{
+}
+
+#endif /* CONFIG_SYSCTL */
+
+static inline __u16 mtu2blksize(struct net_device *dev)
+{
+ u32 blksize = dev->mtu;
+ if (blksize > 0xffff)
+ blksize = 0xffff;
+
+ if (dev->type == ARPHRD_ETHER ||
+ dev->type == ARPHRD_PPP ||
+ dev->type == ARPHRD_IPGRE ||
+ dev->type == ARPHRD_LOOPBACK)
+ blksize -= 2;
+
+ return (__u16)blksize;
+}
+
+static struct dn_ifaddr *dn_dev_alloc_ifa(void)
+{
+ struct dn_ifaddr *ifa;
+
+ ifa = kmalloc(sizeof(*ifa), GFP_KERNEL);
+
+ if (ifa) {
+ memset(ifa, 0, sizeof(*ifa));
+ }
+
+ return ifa;
+}
+
+static __inline__ void dn_dev_free_ifa(struct dn_ifaddr *ifa)
+{
+ kfree(ifa);
+}
+
+static void dn_dev_del_ifa(struct dn_dev *dn_db, struct dn_ifaddr **ifap, int destroy)
+{
+ struct dn_ifaddr *ifa1 = *ifap;
+ unsigned char mac_addr[6];
+ struct net_device *dev = dn_db->dev;
+
+ ASSERT_RTNL();
+
+ *ifap = ifa1->ifa_next;
+
+ if (dn_db->dev->type == ARPHRD_ETHER) {
+ if (ifa1->ifa_local != dn_htons(dn_eth2dn(dev->dev_addr))) {
+ dn_dn2eth(mac_addr, ifa1->ifa_local);
+ dev_mc_delete(dev, mac_addr, ETH_ALEN, 0);
+ }
+ }
+
+ rtmsg_ifa(RTM_DELADDR, ifa1);
+ notifier_call_chain(&dnaddr_chain, NETDEV_DOWN, ifa1);
+ if (destroy) {
+ dn_dev_free_ifa(ifa1);
+
+ if (dn_db->ifa_list == NULL)
+ dn_dev_delete(dn_db->dev);
+ }
+}
+
+static int dn_dev_insert_ifa(struct dn_dev *dn_db, struct dn_ifaddr *ifa)
+{
+ struct net_device *dev = dn_db->dev;
+ struct dn_ifaddr *ifa1;
+ unsigned char mac_addr[6];
+
+ ASSERT_RTNL();
+
+ /* Check for duplicates */
+ for(ifa1 = dn_db->ifa_list; ifa1; ifa1 = ifa1->ifa_next) {
+ if (ifa1->ifa_local == ifa->ifa_local)
+ return -EEXIST;
+ }
+
+ if (dev->type == ARPHRD_ETHER) {
+ if (ifa->ifa_local != dn_htons(dn_eth2dn(dev->dev_addr))) {
+ dn_dn2eth(mac_addr, ifa->ifa_local);
+ dev_mc_add(dev, mac_addr, ETH_ALEN, 0);
+ dev_mc_upload(dev);
+ }
+ }
+
+ ifa->ifa_next = dn_db->ifa_list;
+ dn_db->ifa_list = ifa;
+
+ rtmsg_ifa(RTM_NEWADDR, ifa);
+ notifier_call_chain(&dnaddr_chain, NETDEV_UP, ifa);
+
+ return 0;
+}
+
+static int dn_dev_set_ifa(struct net_device *dev, struct dn_ifaddr *ifa)
+{
+ struct dn_dev *dn_db = dev->dn_ptr;
+ int rv;
+
+ if (dn_db == NULL) {
+ int err;
+ dn_db = dn_dev_create(dev, &err);
+ if (dn_db == NULL)
+ return err;
+ }
+
+ ifa->ifa_dev = dn_db;
+
+ if (dev->flags & IFF_LOOPBACK)
+ ifa->ifa_scope = RT_SCOPE_HOST;
+
+ rv = dn_dev_insert_ifa(dn_db, ifa);
+ if (rv)
+ dn_dev_free_ifa(ifa);
+ return rv;
+}
+
+
+int dn_dev_ioctl(unsigned int cmd, void __user *arg)
+{
+ char buffer[DN_IFREQ_SIZE];
+ struct ifreq *ifr = (struct ifreq *)buffer;
+ struct sockaddr_dn *sdn = (struct sockaddr_dn *)&ifr->ifr_addr;
+ struct dn_dev *dn_db;
+ struct net_device *dev;
+ struct dn_ifaddr *ifa = NULL, **ifap = NULL;
+ int ret = 0;
+
+ if (copy_from_user(ifr, arg, DN_IFREQ_SIZE))
+ return -EFAULT;
+ ifr->ifr_name[IFNAMSIZ-1] = 0;
+
+#ifdef CONFIG_KMOD
+ dev_load(ifr->ifr_name);
+#endif
+
+ switch(cmd) {
+ case SIOCGIFADDR:
+ break;
+ case SIOCSIFADDR:
+ if (!capable(CAP_NET_ADMIN))
+ return -EACCES;
+ if (sdn->sdn_family != AF_DECnet)
+ return -EINVAL;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ rtnl_lock();
+
+ if ((dev = __dev_get_by_name(ifr->ifr_name)) == NULL) {
+ ret = -ENODEV;
+ goto done;
+ }
+
+ if ((dn_db = dev->dn_ptr) != NULL) {
+ for (ifap = &dn_db->ifa_list; (ifa=*ifap) != NULL; ifap = &ifa->ifa_next)
+ if (strcmp(ifr->ifr_name, ifa->ifa_label) == 0)
+ break;
+ }
+
+ if (ifa == NULL && cmd != SIOCSIFADDR) {
+ ret = -EADDRNOTAVAIL;
+ goto done;
+ }
+
+ switch(cmd) {
+ case SIOCGIFADDR:
+ *((dn_address *)sdn->sdn_nodeaddr) = ifa->ifa_local;
+ goto rarok;
+
+ case SIOCSIFADDR:
+ if (!ifa) {
+ if ((ifa = dn_dev_alloc_ifa()) == NULL) {
+ ret = -ENOBUFS;
+ break;
+ }
+ memcpy(ifa->ifa_label, dev->name, IFNAMSIZ);
+ } else {
+ if (ifa->ifa_local == dn_saddr2dn(sdn))
+ break;
+ dn_dev_del_ifa(dn_db, ifap, 0);
+ }
+
+ ifa->ifa_local = ifa->ifa_address = dn_saddr2dn(sdn);
+
+ ret = dn_dev_set_ifa(dev, ifa);
+ }
+done:
+ rtnl_unlock();
+
+ return ret;
+rarok:
+ if (copy_to_user(arg, ifr, DN_IFREQ_SIZE))
+ ret = -EFAULT;
+ goto done;
+}
+
+struct net_device *dn_dev_get_default(void)
+{
+ struct net_device *dev;
+ read_lock(&dndev_lock);
+ dev = decnet_default_device;
+ if (dev) {
+ if (dev->dn_ptr)
+ dev_hold(dev);
+ else
+ dev = NULL;
+ }
+ read_unlock(&dndev_lock);
+ return dev;
+}
+
+int dn_dev_set_default(struct net_device *dev, int force)
+{
+ struct net_device *old = NULL;
+ int rv = -EBUSY;
+ if (!dev->dn_ptr)
+ return -ENODEV;
+ write_lock(&dndev_lock);
+ if (force || decnet_default_device == NULL) {
+ old = decnet_default_device;
+ decnet_default_device = dev;
+ rv = 0;
+ }
+ write_unlock(&dndev_lock);
+ if (old)
+ dev_put(dev);
+ return rv;
+}
+
+static void dn_dev_check_default(struct net_device *dev)
+{
+ write_lock(&dndev_lock);
+ if (dev == decnet_default_device) {
+ decnet_default_device = NULL;
+ } else {
+ dev = NULL;
+ }
+ write_unlock(&dndev_lock);
+ if (dev)
+ dev_put(dev);
+}
+
+static struct dn_dev *dn_dev_by_index(int ifindex)
+{
+ struct net_device *dev;
+ struct dn_dev *dn_dev = NULL;
+ dev = dev_get_by_index(ifindex);
+ if (dev) {
+ dn_dev = dev->dn_ptr;
+ dev_put(dev);
+ }
+
+ return dn_dev;
+}
+
+static int dn_dev_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+ struct rtattr **rta = arg;
+ struct dn_dev *dn_db;
+ struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
+ struct dn_ifaddr *ifa, **ifap;
+
+ if ((dn_db = dn_dev_by_index(ifm->ifa_index)) == NULL)
+ return -EADDRNOTAVAIL;
+
+ for(ifap = &dn_db->ifa_list; (ifa=*ifap) != NULL; ifap = &ifa->ifa_next) {
+ void *tmp = rta[IFA_LOCAL-1];
+ if ((tmp && memcmp(RTA_DATA(tmp), &ifa->ifa_local, 2)) ||
+ (rta[IFA_LABEL-1] && rtattr_strcmp(rta[IFA_LABEL-1], ifa->ifa_label)))
+ continue;
+
+ dn_dev_del_ifa(dn_db, ifap, 1);
+ return 0;
+ }
+
+ return -EADDRNOTAVAIL;
+}
+
+static int dn_dev_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+{
+ struct rtattr **rta = arg;
+ struct net_device *dev;
+ struct dn_dev *dn_db;
+ struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
+ struct dn_ifaddr *ifa;
+ int rv;
+
+ if (rta[IFA_LOCAL-1] == NULL)
+ return -EINVAL;
+
+ if ((dev = __dev_get_by_index(ifm->ifa_index)) == NULL)
+ return -ENODEV;
+
+ if ((dn_db = dev->dn_ptr) == NULL) {
+ int err;
+ dn_db = dn_dev_create(dev, &err);
+ if (!dn_db)
+ return err;
+ }
+
+ if ((ifa = dn_dev_alloc_ifa()) == NULL)
+ return -ENOBUFS;
+
+ if (!rta[IFA_ADDRESS - 1])
+ rta[IFA_ADDRESS - 1] = rta[IFA_LOCAL - 1];
+ memcpy(&ifa->ifa_local, RTA_DATA(rta[IFA_LOCAL-1]), 2);
+ memcpy(&ifa->ifa_address, RTA_DATA(rta[IFA_ADDRESS-1]), 2);
+ ifa->ifa_flags = ifm->ifa_flags;
+ ifa->ifa_scope = ifm->ifa_scope;
+ ifa->ifa_dev = dn_db;
+ if (rta[IFA_LABEL-1])
+ rtattr_strlcpy(ifa->ifa_label, rta[IFA_LABEL-1], IFNAMSIZ);
+ else
+ memcpy(ifa->ifa_label, dev->name, IFNAMSIZ);
+
+ rv = dn_dev_insert_ifa(dn_db, ifa);
+ if (rv)
+ dn_dev_free_ifa(ifa);
+ return rv;
+}
+
+static int dn_dev_fill_ifaddr(struct sk_buff *skb, struct dn_ifaddr *ifa,
+ u32 pid, u32 seq, int event)
+{
+ struct ifaddrmsg *ifm;
+ struct nlmsghdr *nlh;
+ unsigned char *b = skb->tail;
+
+ nlh = NLMSG_PUT(skb, pid, seq, event, sizeof(*ifm));
+ ifm = NLMSG_DATA(nlh);
+
+ ifm->ifa_family = AF_DECnet;
+ ifm->ifa_prefixlen = 16;
+ ifm->ifa_flags = ifa->ifa_flags | IFA_F_PERMANENT;
+ ifm->ifa_scope = ifa->ifa_scope;
+ ifm->ifa_index = ifa->ifa_dev->dev->ifindex;
+ if (ifa->ifa_address)
+ RTA_PUT(skb, IFA_ADDRESS, 2, &ifa->ifa_address);
+ if (ifa->ifa_local)
+ RTA_PUT(skb, IFA_LOCAL, 2, &ifa->ifa_local);
+ if (ifa->ifa_label[0])
+ RTA_PUT(skb, IFA_LABEL, IFNAMSIZ, &ifa->ifa_label);
+ nlh->nlmsg_len = skb->tail - b;
+ return skb->len;
+
+nlmsg_failure:
+rtattr_failure:
+ skb_trim(skb, b - skb->data);
+ return -1;
+}
+
+static void rtmsg_ifa(int event, struct dn_ifaddr *ifa)
+{
+ struct sk_buff *skb;
+ int size = NLMSG_SPACE(sizeof(struct ifaddrmsg)+128);
+
+ skb = alloc_skb(size, GFP_KERNEL);
+ if (!skb) {
+ netlink_set_err(rtnl, 0, RTMGRP_DECnet_IFADDR, ENOBUFS);
+ return;
+ }
+ if (dn_dev_fill_ifaddr(skb, ifa, 0, 0, event) < 0) {
+ kfree_skb(skb);
+ netlink_set_err(rtnl, 0, RTMGRP_DECnet_IFADDR, EINVAL);
+ return;
+ }
+ NETLINK_CB(skb).dst_groups = RTMGRP_DECnet_IFADDR;
+ netlink_broadcast(rtnl, skb, 0, RTMGRP_DECnet_IFADDR, GFP_KERNEL);
+}
+
+static int dn_dev_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ int idx, dn_idx;
+ int s_idx, s_dn_idx;
+ struct net_device *dev;
+ struct dn_dev *dn_db;
+ struct dn_ifaddr *ifa;
+
+ s_idx = cb->args[0];
+ s_dn_idx = dn_idx = cb->args[1];
+ read_lock(&dev_base_lock);
+ for(dev = dev_base, idx = 0; dev; dev = dev->next, idx++) {
+ if (idx < s_idx)
+ continue;
+ if (idx > s_idx)
+ s_dn_idx = 0;
+ if ((dn_db = dev->dn_ptr) == NULL)
+ continue;
+
+ for(ifa = dn_db->ifa_list, dn_idx = 0; ifa; ifa = ifa->ifa_next, dn_idx++) {
+ if (dn_idx < s_dn_idx)
+ continue;
+
+ if (dn_dev_fill_ifaddr(skb, ifa,
+ NETLINK_CB(cb->skb).pid,
+ cb->nlh->nlmsg_seq,
+ RTM_NEWADDR) <= 0)
+ goto done;
+ }
+ }
+done:
+ read_unlock(&dev_base_lock);
+ cb->args[0] = idx;
+ cb->args[1] = dn_idx;
+
+ return skb->len;
+}
+
+static int dn_dev_get_first(struct net_device *dev, dn_address *addr)
+{
+ struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
+ struct dn_ifaddr *ifa;
+ int rv = -ENODEV;
+ if (dn_db == NULL)
+ goto out;
+ ifa = dn_db->ifa_list;
+ if (ifa != NULL) {
+ *addr = ifa->ifa_local;
+ rv = 0;
+ }
+out:
+ return rv;
+}
+
+/*
+ * Find a default address to bind to.
+ *
+ * This is one of those areas where the initial VMS concepts don't really
+ * map onto the Linux concepts, and since we introduced multiple addresses
+ * per interface we have to cope with slightly odd ways of finding out what
+ * "our address" really is. Mostly it's not a problem; for this we just guess
+ * a sensible default. Eventually the routing code will take care of all the
+ * nasties for us I hope.
+ */
+int dn_dev_bind_default(dn_address *addr)
+{
+ struct net_device *dev;
+ int rv;
+ dev = dn_dev_get_default();
+last_chance:
+ if (dev) {
+ read_lock(&dev_base_lock);
+ rv = dn_dev_get_first(dev, addr);
+ read_unlock(&dev_base_lock);
+ dev_put(dev);
+ if (rv == 0 || dev == &loopback_dev)
+ return rv;
+ }
+ dev = &loopback_dev;
+ dev_hold(dev);
+ goto last_chance;
+}
+
+static void dn_send_endnode_hello(struct net_device *dev, struct dn_ifaddr *ifa)
+{
+ struct endnode_hello_message *msg;
+ struct sk_buff *skb = NULL;
+ unsigned short int *pktlen;
+ struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
+
+ if ((skb = dn_alloc_skb(NULL, sizeof(*msg), GFP_ATOMIC)) == NULL)
+ return;
+
+ skb->dev = dev;
+
+ msg = (struct endnode_hello_message *)skb_put(skb,sizeof(*msg));
+
+ msg->msgflg = 0x0D;
+ memcpy(msg->tiver, dn_eco_version, 3);
+ dn_dn2eth(msg->id, ifa->ifa_local);
+ msg->iinfo = DN_RT_INFO_ENDN;
+ msg->blksize = dn_htons(mtu2blksize(dev));
+ msg->area = 0x00;
+ memset(msg->seed, 0, 8);
+ memcpy(msg->neighbor, dn_hiord, ETH_ALEN);
+
+ if (dn_db->router) {
+ struct dn_neigh *dn = (struct dn_neigh *)dn_db->router;
+ dn_dn2eth(msg->neighbor, dn->addr);
+ }
+
+ msg->timer = dn_htons((unsigned short)dn_db->parms.t3);
+ msg->mpd = 0x00;
+ msg->datalen = 0x02;
+ memset(msg->data, 0xAA, 2);
+
+ pktlen = (unsigned short *)skb_push(skb,2);
+ *pktlen = dn_htons(skb->len - 2);
+
+ skb->nh.raw = skb->data;
+
+ dn_rt_finish_output(skb, dn_rt_all_rt_mcast, msg->id);
+}
+
+
+#define DRDELAY (5 * HZ)
+
+static int dn_am_i_a_router(struct dn_neigh *dn, struct dn_dev *dn_db, struct dn_ifaddr *ifa)
+{
+ /* First check time since device went up */
+ if ((jiffies - dn_db->uptime) < DRDELAY)
+ return 0;
+
+ /* If there is no router, then yes... */
+ if (!dn_db->router)
+ return 1;
+
+ /* otherwise only if we have a higher priority or.. */
+ if (dn->priority < dn_db->parms.priority)
+ return 1;
+
+ /* if we have equal priority and a higher node number */
+ if (dn->priority != dn_db->parms.priority)
+ return 0;
+
+ if (dn_ntohs(dn->addr) < dn_ntohs(ifa->ifa_local))
+ return 1;
+
+ return 0;
+}
+
+static void dn_send_router_hello(struct net_device *dev, struct dn_ifaddr *ifa)
+{
+ int n;
+ struct dn_dev *dn_db = dev->dn_ptr;
+ struct dn_neigh *dn = (struct dn_neigh *)dn_db->router;
+ struct sk_buff *skb;
+ size_t size;
+ unsigned char *ptr;
+ unsigned char *i1, *i2;
+ unsigned short *pktlen;
+ char *src;
+
+ if (mtu2blksize(dev) < (26 + 7))
+ return;
+
+ n = mtu2blksize(dev) - 26;
+ n /= 7;
+
+ if (n > 32)
+ n = 32;
+
+ size = 2 + 26 + 7 * n;
+
+ if ((skb = dn_alloc_skb(NULL, size, GFP_ATOMIC)) == NULL)
+ return;
+
+ skb->dev = dev;
+ ptr = skb_put(skb, size);
+
+ *ptr++ = DN_RT_PKT_CNTL | DN_RT_PKT_ERTH;
+ *ptr++ = 2; /* ECO */
+ *ptr++ = 0;
+ *ptr++ = 0;
+ dn_dn2eth(ptr, ifa->ifa_local);
+ src = ptr;
+ ptr += ETH_ALEN;
+ *ptr++ = dn_db->parms.forwarding == 1 ?
+ DN_RT_INFO_L1RT : DN_RT_INFO_L2RT;
+ *((unsigned short *)ptr) = dn_htons(mtu2blksize(dev));
+ ptr += 2;
+ *ptr++ = dn_db->parms.priority; /* Priority */
+ *ptr++ = 0; /* Area: Reserved */
+ *((unsigned short *)ptr) = dn_htons((unsigned short)dn_db->parms.t3);
+ ptr += 2;
+ *ptr++ = 0; /* MPD: Reserved */
+ i1 = ptr++;
+ memset(ptr, 0, 7); /* Name: Reserved */
+ ptr += 7;
+ i2 = ptr++;
+
+ n = dn_neigh_elist(dev, ptr, n);
+
+ *i2 = 7 * n;
+ *i1 = 8 + *i2;
+
+ skb_trim(skb, (27 + *i2));
+
+ pktlen = (unsigned short *)skb_push(skb, 2);
+ *pktlen = dn_htons(skb->len - 2);
+
+ skb->nh.raw = skb->data;
+
+ if (dn_am_i_a_router(dn, dn_db, ifa)) {
+ struct sk_buff *skb2 = skb_copy(skb, GFP_ATOMIC);
+ if (skb2) {
+ dn_rt_finish_output(skb2, dn_rt_all_end_mcast, src);
+ }
+ }
+
+ dn_rt_finish_output(skb, dn_rt_all_rt_mcast, src);
+}
+
+static void dn_send_brd_hello(struct net_device *dev, struct dn_ifaddr *ifa)
+{
+ struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
+
+ if (dn_db->parms.forwarding == 0)
+ dn_send_endnode_hello(dev, ifa);
+ else
+ dn_send_router_hello(dev, ifa);
+}
+
+static void dn_send_ptp_hello(struct net_device *dev, struct dn_ifaddr *ifa)
+{
+ int tdlen = 16;
+ int size = dev->hard_header_len + 2 + 4 + tdlen;
+ struct sk_buff *skb = dn_alloc_skb(NULL, size, GFP_ATOMIC);
+ int i;
+ unsigned char *ptr;
+ char src[ETH_ALEN];
+
+ if (skb == NULL)
+ return ;
+
+ skb->dev = dev;
+ skb_push(skb, dev->hard_header_len);
+ ptr = skb_put(skb, 2 + 4 + tdlen);
+
+ *ptr++ = DN_RT_PKT_HELO;
+ *((dn_address *)ptr) = ifa->ifa_local;
+ ptr += 2;
+ *ptr++ = tdlen;
+
+ for(i = 0; i < tdlen; i++)
+ *ptr++ = 0252;
+
+ dn_dn2eth(src, ifa->ifa_local);
+ dn_rt_finish_output(skb, dn_rt_all_rt_mcast, src);
+}
+
+static int dn_eth_up(struct net_device *dev)
+{
+ struct dn_dev *dn_db = dev->dn_ptr;
+
+ if (dn_db->parms.forwarding == 0)
+ dev_mc_add(dev, dn_rt_all_end_mcast, ETH_ALEN, 0);
+ else
+ dev_mc_add(dev, dn_rt_all_rt_mcast, ETH_ALEN, 0);
+
+ dev_mc_upload(dev);
+
+ dn_db->use_long = 1;
+
+ return 0;
+}
+
+static void dn_eth_down(struct net_device *dev)
+{
+ struct dn_dev *dn_db = dev->dn_ptr;
+
+ if (dn_db->parms.forwarding == 0)
+ dev_mc_delete(dev, dn_rt_all_end_mcast, ETH_ALEN, 0);
+ else
+ dev_mc_delete(dev, dn_rt_all_rt_mcast, ETH_ALEN, 0);
+}
+
+static void dn_dev_set_timer(struct net_device *dev);
+
+static void dn_dev_timer_func(unsigned long arg)
+{
+ struct net_device *dev = (struct net_device *)arg;
+ struct dn_dev *dn_db = dev->dn_ptr;
+ struct dn_ifaddr *ifa;
+
+ if (dn_db->t3 <= dn_db->parms.t2) {
+ if (dn_db->parms.timer3) {
+ for(ifa = dn_db->ifa_list; ifa; ifa = ifa->ifa_next) {
+ if (!(ifa->ifa_flags & IFA_F_SECONDARY))
+ dn_db->parms.timer3(dev, ifa);
+ }
+ }
+ dn_db->t3 = dn_db->parms.t3;
+ } else {
+ dn_db->t3 -= dn_db->parms.t2;
+ }
+
+ dn_dev_set_timer(dev);
+}
+
+static void dn_dev_set_timer(struct net_device *dev)
+{
+ struct dn_dev *dn_db = dev->dn_ptr;
+
+ if (dn_db->parms.t2 > dn_db->parms.t3)
+ dn_db->parms.t2 = dn_db->parms.t3;
+
+ dn_db->timer.data = (unsigned long)dev;
+ dn_db->timer.function = dn_dev_timer_func;
+ dn_db->timer.expires = jiffies + (dn_db->parms.t2 * HZ);
+
+ add_timer(&dn_db->timer);
+}
+
+struct dn_dev *dn_dev_create(struct net_device *dev, int *err)
+{
+ int i;
+ struct dn_dev_parms *p = dn_dev_list;
+ struct dn_dev *dn_db;
+
+ for(i = 0; i < DN_DEV_LIST_SIZE; i++, p++) {
+ if (p->type == dev->type)
+ break;
+ }
+
+ *err = -ENODEV;
+ if (i == DN_DEV_LIST_SIZE)
+ return NULL;
+
+ *err = -ENOBUFS;
+ if ((dn_db = kmalloc(sizeof(struct dn_dev), GFP_ATOMIC)) == NULL)
+ return NULL;
+
+ memset(dn_db, 0, sizeof(struct dn_dev));
+ memcpy(&dn_db->parms, p, sizeof(struct dn_dev_parms));
+ smp_wmb();
+ dev->dn_ptr = dn_db;
+ dn_db->dev = dev;
+ init_timer(&dn_db->timer);
+
+ dn_db->uptime = jiffies;
+ if (dn_db->parms.up) {
+ if (dn_db->parms.up(dev) < 0) {
+ dev->dn_ptr = NULL;
+ kfree(dn_db);
+ return NULL;
+ }
+ }
+
+ dn_db->neigh_parms = neigh_parms_alloc(dev, &dn_neigh_table);
+
+ dn_dev_sysctl_register(dev, &dn_db->parms);
+
+ dn_dev_set_timer(dev);
+
+ *err = 0;
+ return dn_db;
+}
+
+
+/*
+ * This processes a device up event. We only start up
+ * the loopback device & ethernet devices with correct
+ * MAC addreses automatically. Others must be started
+ * specifically.
+ *
+ * FIXME: How should we configure the loopback address ? If we could dispense
+ * with using decnet_address here and for autobind, it will be one less thing
+ * for users to worry about setting up.
+ */
+
+void dn_dev_up(struct net_device *dev)
+{
+ struct dn_ifaddr *ifa;
+ dn_address addr = decnet_address;
+ int maybe_default = 0;
+ struct dn_dev *dn_db = (struct dn_dev *)dev->dn_ptr;
+
+ if ((dev->type != ARPHRD_ETHER) && (dev->type != ARPHRD_LOOPBACK))
+ return;
+
+ /*
+ * Need to ensure that loopback device has a dn_db attached to it
+ * to allow creation of neighbours against it, even though it might
+ * not have a local address of its own. Might as well do the same for
+ * all autoconfigured interfaces.
+ */
+ if (dn_db == NULL) {
+ int err;
+ dn_db = dn_dev_create(dev, &err);
+ if (dn_db == NULL)
+ return;
+ }
+
+ if (dev->type == ARPHRD_ETHER) {
+ if (memcmp(dev->dev_addr, dn_hiord, 4) != 0)
+ return;
+ addr = dn_htons(dn_eth2dn(dev->dev_addr));
+ maybe_default = 1;
+ }
+
+ if (addr == 0)
+ return;
+
+ if ((ifa = dn_dev_alloc_ifa()) == NULL)
+ return;
+
+ ifa->ifa_local = ifa->ifa_address = addr;
+ ifa->ifa_flags = 0;
+ ifa->ifa_scope = RT_SCOPE_UNIVERSE;
+ strcpy(ifa->ifa_label, dev->name);
+
+ dn_dev_set_ifa(dev, ifa);
+
+ /*
+ * Automagically set the default device to the first automatically
+ * configured ethernet card in the system.
+ */
+ if (maybe_default) {
+ dev_hold(dev);
+ if (dn_dev_set_default(dev, 0))
+ dev_put(dev);
+ }
+}
+
+static void dn_dev_delete(struct net_device *dev)
+{
+ struct dn_dev *dn_db = dev->dn_ptr;
+
+ if (dn_db == NULL)
+ return;
+
+ del_timer_sync(&dn_db->timer);
+ dn_dev_sysctl_unregister(&dn_db->parms);
+ dn_dev_check_default(dev);
+ neigh_ifdown(&dn_neigh_table, dev);
+
+ if (dn_db->parms.down)
+ dn_db->parms.down(dev);
+
+ dev->dn_ptr = NULL;
+
+ neigh_parms_release(&dn_neigh_table, dn_db->neigh_parms);
+ neigh_ifdown(&dn_neigh_table, dev);
+
+ if (dn_db->router)
+ neigh_release(dn_db->router);
+ if (dn_db->peer)
+ neigh_release(dn_db->peer);
+
+ kfree(dn_db);
+}
+
+void dn_dev_down(struct net_device *dev)
+{
+ struct dn_dev *dn_db = dev->dn_ptr;
+ struct dn_ifaddr *ifa;
+
+ if (dn_db == NULL)
+ return;
+
+ while((ifa = dn_db->ifa_list) != NULL) {
+ dn_dev_del_ifa(dn_db, &dn_db->ifa_list, 0);
+ dn_dev_free_ifa(ifa);
+ }
+
+ dn_dev_delete(dev);
+}
+
+void dn_dev_init_pkt(struct sk_buff *skb)
+{
+ return;
+}
+
+void dn_dev_veri_pkt(struct sk_buff *skb)
+{
+ return;
+}
+
+void dn_dev_hello(struct sk_buff *skb)
+{
+ return;
+}
+
+void dn_dev_devices_off(void)
+{
+ struct net_device *dev;
+
+ rtnl_lock();
+ for(dev = dev_base; dev; dev = dev->next)
+ dn_dev_down(dev);
+ rtnl_unlock();
+
+}
+
+void dn_dev_devices_on(void)
+{
+ struct net_device *dev;
+
+ rtnl_lock();
+ for(dev = dev_base; dev; dev = dev->next) {
+ if (dev->flags & IFF_UP)
+ dn_dev_up(dev);
+ }
+ rtnl_unlock();
+}
+
+int register_dnaddr_notifier(struct notifier_block *nb)
+{
+ return notifier_chain_register(&dnaddr_chain, nb);
+}
+
+int unregister_dnaddr_notifier(struct notifier_block *nb)
+{
+ return notifier_chain_unregister(&dnaddr_chain, nb);
+}
+
+#ifdef CONFIG_PROC_FS
+static inline struct net_device *dn_dev_get_next(struct seq_file *seq, struct net_device *dev)
+{
+ do {
+ dev = dev->next;
+ } while(dev && !dev->dn_ptr);
+
+ return dev;
+}
+
+static struct net_device *dn_dev_get_idx(struct seq_file *seq, loff_t pos)
+{
+ struct net_device *dev;
+
+ dev = dev_base;
+ if (dev && !dev->dn_ptr)
+ dev = dn_dev_get_next(seq, dev);
+ if (pos) {
+ while(dev && (dev = dn_dev_get_next(seq, dev)))
+ --pos;
+ }
+ return dev;
+}
+
+static void *dn_dev_seq_start(struct seq_file *seq, loff_t *pos)
+{
+ if (*pos) {
+ struct net_device *dev;
+ read_lock(&dev_base_lock);
+ dev = dn_dev_get_idx(seq, *pos - 1);
+ if (dev == NULL)
+ read_unlock(&dev_base_lock);
+ return dev;
+ }
+ return SEQ_START_TOKEN;
+}
+
+static void *dn_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+ struct net_device *dev = v;
+ loff_t one = 1;
+
+ if (v == SEQ_START_TOKEN) {
+ dev = dn_dev_seq_start(seq, &one);
+ } else {
+ dev = dn_dev_get_next(seq, dev);
+ if (dev == NULL)
+ read_unlock(&dev_base_lock);
+ }
+ ++*pos;
+ return dev;
+}
+
+static void dn_dev_seq_stop(struct seq_file *seq, void *v)
+{
+ if (v && v != SEQ_START_TOKEN)
+ read_unlock(&dev_base_lock);
+}
+
+static char *dn_type2asc(char type)
+{
+ switch(type) {
+ case DN_DEV_BCAST:
+ return "B";
+ case DN_DEV_UCAST:
+ return "U";
+ case DN_DEV_MPOINT:
+ return "M";
+ }
+
+ return "?";
+}
+
+static int dn_dev_seq_show(struct seq_file *seq, void *v)
+{
+ if (v == SEQ_START_TOKEN)
+ seq_puts(seq, "Name Flags T1 Timer1 T3 Timer3 BlkSize Pri State DevType Router Peer\n");
+ else {
+ struct net_device *dev = v;
+ char peer_buf[DN_ASCBUF_LEN];
+ char router_buf[DN_ASCBUF_LEN];
+ struct dn_dev *dn_db = dev->dn_ptr;
+
+ seq_printf(seq, "%-8s %1s %04u %04u %04lu %04lu"
+ " %04hu %03d %02x %-10s %-7s %-7s\n",
+ dev->name ? dev->name : "???",
+ dn_type2asc(dn_db->parms.mode),
+ 0, 0,
+ dn_db->t3, dn_db->parms.t3,
+ mtu2blksize(dev),
+ dn_db->parms.priority,
+ dn_db->parms.state, dn_db->parms.name,
+ dn_db->router ? dn_addr2asc(dn_ntohs(*(dn_address *)dn_db->router->primary_key), router_buf) : "",
+ dn_db->peer ? dn_addr2asc(dn_ntohs(*(dn_address *)dn_db->peer->primary_key), peer_buf) : "");
+ }
+ return 0;
+}
+
+static struct seq_operations dn_dev_seq_ops = {
+ .start = dn_dev_seq_start,
+ .next = dn_dev_seq_next,
+ .stop = dn_dev_seq_stop,
+ .show = dn_dev_seq_show,
+};
+
+static int dn_dev_seq_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &dn_dev_seq_ops);
+}
+
+static struct file_operations dn_dev_seq_fops = {
+ .owner = THIS_MODULE,
+ .open = dn_dev_seq_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+#endif /* CONFIG_PROC_FS */
+
+static struct rtnetlink_link dnet_rtnetlink_table[RTM_MAX-RTM_BASE+1] =
+{
+ [4] = { .doit = dn_dev_rtm_newaddr, },
+ [5] = { .doit = dn_dev_rtm_deladdr, },
+ [6] = { .dumpit = dn_dev_dump_ifaddr, },
+
+#ifdef CONFIG_DECNET_ROUTER
+ [8] = { .doit = dn_fib_rtm_newroute, },
+ [9] = { .doit = dn_fib_rtm_delroute, },
+ [10] = { .doit = dn_cache_getroute, .dumpit = dn_fib_dump, },
+ [16] = { .doit = dn_fib_rtm_newrule, },
+ [17] = { .doit = dn_fib_rtm_delrule, },
+ [18] = { .dumpit = dn_fib_dump_rules, },
+#else
+ [10] = { .doit = dn_cache_getroute, .dumpit = dn_cache_dump, },
+#endif
+
+};
+
+static int __initdata addr[2];
+module_param_array(addr, int, NULL, 0444);
+MODULE_PARM_DESC(addr, "The DECnet address of this machine: area,node");
+
+void __init dn_dev_init(void)
+{
+ if (addr[0] > 63 || addr[0] < 0) {
+ printk(KERN_ERR "DECnet: Area must be between 0 and 63");
+ return;
+ }
+
+ if (addr[1] > 1023 || addr[1] < 0) {
+ printk(KERN_ERR "DECnet: Node must be between 0 and 1023");
+ return;
+ }
+
+ decnet_address = dn_htons((addr[0] << 10) | addr[1]);
+
+ dn_dev_devices_on();
+
+ rtnetlink_links[PF_DECnet] = dnet_rtnetlink_table;
+
+ proc_net_fops_create("decnet_dev", S_IRUGO, &dn_dev_seq_fops);
+
+#ifdef CONFIG_SYSCTL
+ {
+ int i;
+ for(i = 0; i < DN_DEV_LIST_SIZE; i++)
+ dn_dev_sysctl_register(NULL, &dn_dev_list[i]);
+ }
+#endif /* CONFIG_SYSCTL */
+}
+
+void __exit dn_dev_cleanup(void)
+{
+ rtnetlink_links[PF_DECnet] = NULL;
+
+#ifdef CONFIG_SYSCTL
+ {
+ int i;
+ for(i = 0; i < DN_DEV_LIST_SIZE; i++)
+ dn_dev_sysctl_unregister(&dn_dev_list[i]);
+ }
+#endif /* CONFIG_SYSCTL */
+
+ proc_net_remove("decnet_dev");
+
+ dn_dev_devices_off();
+}