| /* |
| * 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/capability.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_addr.h> |
| #include <linux/if_arp.h> |
| #include <linux/if_ether.h> |
| #include <linux/skbuff.h> |
| #include <linux/sysctl.h> |
| #include <linux/notifier.h> |
| #include <asm/uaccess.h> |
| #include <asm/system.h> |
| #include <net/net_namespace.h> |
| #include <net/neighbour.h> |
| #include <net/dst.h> |
| #include <net/flow.h> |
| #include <net/fib_rules.h> |
| #include <net/netlink.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. |
| */ |
| __le16 decnet_address = 0; |
| |
| static DEFINE_RWLOCK(dndev_lock); |
| static struct net_device *decnet_default_device; |
| static BLOCKING_NOTIFIER_HEAD(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 dn_ifaddr_notify(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 ARRAY_SIZE(dn_dev_list) |
| |
| #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); |
| |
| static struct dn_dev_sysctl_table { |
| struct ctl_table_header *sysctl_header; |
| ctl_table dn_dev_vars[5]; |
| } 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} |
| }, |
| }; |
| |
| static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms *parms) |
| { |
| struct dn_dev_sysctl_table *t; |
| int i; |
| |
| #define DN_CTL_PATH_DEV 3 |
| |
| struct ctl_path dn_ctl_path[] = { |
| { .procname = "net", .ctl_name = CTL_NET, }, |
| { .procname = "decnet", .ctl_name = NET_DECNET, }, |
| { .procname = "conf", .ctl_name = NET_DECNET_CONF, }, |
| { /* to be set */ }, |
| { }, |
| }; |
| |
| t = kmemdup(&dn_dev_sysctl, sizeof(*t), GFP_KERNEL); |
| if (t == NULL) |
| return; |
| |
| 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; |
| } |
| |
| if (dev) { |
| dn_ctl_path[DN_CTL_PATH_DEV].procname = dev->name; |
| dn_ctl_path[DN_CTL_PATH_DEV].ctl_name = dev->ifindex; |
| } else { |
| dn_ctl_path[DN_CTL_PATH_DEV].procname = parms->name; |
| dn_ctl_path[DN_CTL_PATH_DEV].ctl_name = parms->ctl_name; |
| } |
| |
| t->dn_dev_vars[0].extra1 = (void *)dev; |
| |
| t->sysctl_header = register_sysctl_paths(dn_ctl_path, t->dn_dev_vars); |
| 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) |
| { |
| #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 = kzalloc(sizeof(*ifa), GFP_KERNEL); |
| |
| 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_eth2dn(dev->dev_addr)) { |
| dn_dn2eth(mac_addr, ifa1->ifa_local); |
| dev_mc_delete(dev, mac_addr, ETH_ALEN, 0); |
| } |
| } |
| |
| dn_ifaddr_notify(RTM_DELADDR, ifa1); |
| blocking_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_eth2dn(dev->dev_addr)) { |
| dn_dn2eth(mac_addr, ifa->ifa_local); |
| dev_mc_add(dev, mac_addr, ETH_ALEN, 0); |
| } |
| } |
| |
| ifa->ifa_next = dn_db->ifa_list; |
| dn_db->ifa_list = ifa; |
| |
| dn_ifaddr_notify(RTM_NEWADDR, ifa); |
| blocking_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(&init_net, 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(&init_net, 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: |
| *((__le16 *)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(old); |
| 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(&init_net, ifindex); |
| if (dev) { |
| dn_dev = dev->dn_ptr; |
| dev_put(dev); |
| } |
| |
| return dn_dev; |
| } |
| |
| static const struct nla_policy dn_ifa_policy[IFA_MAX+1] = { |
| [IFA_ADDRESS] = { .type = NLA_U16 }, |
| [IFA_LOCAL] = { .type = NLA_U16 }, |
| [IFA_LABEL] = { .type = NLA_STRING, |
| .len = IFNAMSIZ - 1 }, |
| }; |
| |
| static int dn_nl_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
| { |
| struct net *net = sock_net(skb->sk); |
| struct nlattr *tb[IFA_MAX+1]; |
| struct dn_dev *dn_db; |
| struct ifaddrmsg *ifm; |
| struct dn_ifaddr *ifa, **ifap; |
| int err = -EINVAL; |
| |
| if (net != &init_net) |
| goto errout; |
| |
| err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, dn_ifa_policy); |
| if (err < 0) |
| goto errout; |
| |
| err = -ENODEV; |
| ifm = nlmsg_data(nlh); |
| if ((dn_db = dn_dev_by_index(ifm->ifa_index)) == NULL) |
| goto errout; |
| |
| err = -EADDRNOTAVAIL; |
| for (ifap = &dn_db->ifa_list; (ifa = *ifap); ifap = &ifa->ifa_next) { |
| if (tb[IFA_LOCAL] && |
| nla_memcmp(tb[IFA_LOCAL], &ifa->ifa_local, 2)) |
| continue; |
| |
| if (tb[IFA_LABEL] && nla_strcmp(tb[IFA_LABEL], ifa->ifa_label)) |
| continue; |
| |
| dn_dev_del_ifa(dn_db, ifap, 1); |
| return 0; |
| } |
| |
| errout: |
| return err; |
| } |
| |
| static int dn_nl_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
| { |
| struct net *net = sock_net(skb->sk); |
| struct nlattr *tb[IFA_MAX+1]; |
| struct net_device *dev; |
| struct dn_dev *dn_db; |
| struct ifaddrmsg *ifm; |
| struct dn_ifaddr *ifa; |
| int err; |
| |
| if (net != &init_net) |
| return -EINVAL; |
| |
| err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFA_MAX, dn_ifa_policy); |
| if (err < 0) |
| return err; |
| |
| if (tb[IFA_LOCAL] == NULL) |
| return -EINVAL; |
| |
| ifm = nlmsg_data(nlh); |
| if ((dev = __dev_get_by_index(&init_net, 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 (tb[IFA_ADDRESS] == NULL) |
| tb[IFA_ADDRESS] = tb[IFA_LOCAL]; |
| |
| ifa->ifa_local = nla_get_le16(tb[IFA_LOCAL]); |
| ifa->ifa_address = nla_get_le16(tb[IFA_ADDRESS]); |
| ifa->ifa_flags = ifm->ifa_flags; |
| ifa->ifa_scope = ifm->ifa_scope; |
| ifa->ifa_dev = dn_db; |
| |
| if (tb[IFA_LABEL]) |
| nla_strlcpy(ifa->ifa_label, tb[IFA_LABEL], IFNAMSIZ); |
| else |
| memcpy(ifa->ifa_label, dev->name, IFNAMSIZ); |
| |
| err = dn_dev_insert_ifa(dn_db, ifa); |
| if (err) |
| dn_dev_free_ifa(ifa); |
| |
| return err; |
| } |
| |
| static inline size_t dn_ifaddr_nlmsg_size(void) |
| { |
| return NLMSG_ALIGN(sizeof(struct ifaddrmsg)) |
| + nla_total_size(IFNAMSIZ) /* IFA_LABEL */ |
| + nla_total_size(2) /* IFA_ADDRESS */ |
| + nla_total_size(2); /* IFA_LOCAL */ |
| } |
| |
| static int dn_nl_fill_ifaddr(struct sk_buff *skb, struct dn_ifaddr *ifa, |
| u32 pid, u32 seq, int event, unsigned int flags) |
| { |
| struct ifaddrmsg *ifm; |
| struct nlmsghdr *nlh; |
| |
| nlh = nlmsg_put(skb, pid, seq, event, sizeof(*ifm), flags); |
| if (nlh == NULL) |
| return -EMSGSIZE; |
| |
| 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) |
| NLA_PUT_LE16(skb, IFA_ADDRESS, ifa->ifa_address); |
| if (ifa->ifa_local) |
| NLA_PUT_LE16(skb, IFA_LOCAL, ifa->ifa_local); |
| if (ifa->ifa_label[0]) |
| NLA_PUT_STRING(skb, IFA_LABEL, ifa->ifa_label); |
| |
| return nlmsg_end(skb, nlh); |
| |
| nla_put_failure: |
| nlmsg_cancel(skb, nlh); |
| return -EMSGSIZE; |
| } |
| |
| static void dn_ifaddr_notify(int event, struct dn_ifaddr *ifa) |
| { |
| struct sk_buff *skb; |
| int err = -ENOBUFS; |
| |
| skb = alloc_skb(dn_ifaddr_nlmsg_size(), GFP_KERNEL); |
| if (skb == NULL) |
| goto errout; |
| |
| err = dn_nl_fill_ifaddr(skb, ifa, 0, 0, event, 0); |
| if (err < 0) { |
| /* -EMSGSIZE implies BUG in dn_ifaddr_nlmsg_size() */ |
| WARN_ON(err == -EMSGSIZE); |
| kfree_skb(skb); |
| goto errout; |
| } |
| err = rtnl_notify(skb, &init_net, 0, RTNLGRP_DECnet_IFADDR, NULL, GFP_KERNEL); |
| errout: |
| if (err < 0) |
| rtnl_set_sk_err(&init_net, RTNLGRP_DECnet_IFADDR, err); |
| } |
| |
| static int dn_nl_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb) |
| { |
| struct net *net = sock_net(skb->sk); |
| int idx, dn_idx = 0, skip_ndevs, skip_naddr; |
| struct net_device *dev; |
| struct dn_dev *dn_db; |
| struct dn_ifaddr *ifa; |
| |
| if (net != &init_net) |
| return 0; |
| |
| skip_ndevs = cb->args[0]; |
| skip_naddr = cb->args[1]; |
| |
| idx = 0; |
| for_each_netdev(&init_net, dev) { |
| if (idx < skip_ndevs) |
| goto cont; |
| else if (idx > skip_ndevs) { |
| /* Only skip over addresses for first dev dumped |
| * in this iteration (idx == skip_ndevs) */ |
| skip_naddr = 0; |
| } |
| |
| if ((dn_db = dev->dn_ptr) == NULL) |
| goto cont; |
| |
| for (ifa = dn_db->ifa_list, dn_idx = 0; ifa; |
| ifa = ifa->ifa_next, dn_idx++) { |
| if (dn_idx < skip_naddr) |
| continue; |
| |
| if (dn_nl_fill_ifaddr(skb, ifa, NETLINK_CB(cb->skb).pid, |
| cb->nlh->nlmsg_seq, RTM_NEWADDR, |
| NLM_F_MULTI) < 0) |
| goto done; |
| } |
| cont: |
| idx++; |
| } |
| done: |
| cb->args[0] = idx; |
| cb->args[1] = dn_idx; |
| |
| return skb->len; |
| } |
| |
| static int dn_dev_get_first(struct net_device *dev, __le16 *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(__le16 *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 == init_net.loopback_dev) |
| return rv; |
| } |
| dev = init_net.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; |
| __le16 *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 = (__le16 *)skb_push(skb,2); |
| *pktlen = dn_htons(skb->len - 2); |
| |
| skb_reset_network_header(skb); |
| |
| 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; |
| __le16 *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; |
| *((__le16 *)ptr) = dn_htons(mtu2blksize(dev)); |
| ptr += 2; |
| *ptr++ = dn_db->parms.priority; /* Priority */ |
| *ptr++ = 0; /* Area: Reserved */ |
| *((__le16 *)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 = (__le16 *)skb_push(skb, 2); |
| *pktlen = dn_htons(skb->len - 2); |
| |
| skb_reset_network_header(skb); |
| |
| 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; |
| *((__le16 *)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); |
| |
| 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 = kzalloc(sizeof(struct dn_dev), GFP_ATOMIC)) == NULL) |
| return NULL; |
| |
| 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; |
| |
| dn_db->neigh_parms = neigh_parms_alloc(dev, &dn_neigh_table); |
| if (!dn_db->neigh_parms) { |
| dev->dn_ptr = NULL; |
| kfree(dn_db); |
| return NULL; |
| } |
| |
| if (dn_db->parms.up) { |
| if (dn_db->parms.up(dev) < 0) { |
| neigh_parms_release(&dn_neigh_table, dn_db->neigh_parms); |
| dev->dn_ptr = NULL; |
| kfree(dn_db); |
| return NULL; |
| } |
| } |
| |
| 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; |
| __le16 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_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_each_netdev(&init_net, dev) |
| dn_dev_down(dev); |
| rtnl_unlock(); |
| |
| } |
| |
| void dn_dev_devices_on(void) |
| { |
| struct net_device *dev; |
| |
| rtnl_lock(); |
| for_each_netdev(&init_net, dev) { |
| if (dev->flags & IFF_UP) |
| dn_dev_up(dev); |
| } |
| rtnl_unlock(); |
| } |
| |
| int register_dnaddr_notifier(struct notifier_block *nb) |
| { |
| return blocking_notifier_chain_register(&dnaddr_chain, nb); |
| } |
| |
| int unregister_dnaddr_notifier(struct notifier_block *nb) |
| { |
| return blocking_notifier_chain_unregister(&dnaddr_chain, nb); |
| } |
| |
| #ifdef CONFIG_PROC_FS |
| static inline int is_dn_dev(struct net_device *dev) |
| { |
| return dev->dn_ptr != NULL; |
| } |
| |
| static void *dn_dev_seq_start(struct seq_file *seq, loff_t *pos) |
| { |
| int i; |
| struct net_device *dev; |
| |
| read_lock(&dev_base_lock); |
| |
| if (*pos == 0) |
| return SEQ_START_TOKEN; |
| |
| i = 1; |
| for_each_netdev(&init_net, dev) { |
| if (!is_dn_dev(dev)) |
| continue; |
| |
| if (i++ == *pos) |
| return dev; |
| } |
| |
| return NULL; |
| } |
| |
| static void *dn_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos) |
| { |
| struct net_device *dev; |
| |
| ++*pos; |
| |
| dev = (struct net_device *)v; |
| if (v == SEQ_START_TOKEN) |
| dev = net_device_entry(&init_net.dev_base_head); |
| |
| for_each_netdev_continue(&init_net, dev) { |
| if (!is_dn_dev(dev)) |
| continue; |
| |
| return dev; |
| } |
| |
| return NULL; |
| } |
| |
| static void dn_dev_seq_stop(struct seq_file *seq, void *v) |
| { |
| 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(*(__le16 *)dn_db->router->primary_key), router_buf) : "", |
| dn_db->peer ? dn_addr2asc(dn_ntohs(*(__le16 *)dn_db->peer->primary_key), peer_buf) : ""); |
| } |
| return 0; |
| } |
| |
| static const 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 const 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 int 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(); |
| |
| rtnl_register(PF_DECnet, RTM_NEWADDR, dn_nl_newaddr, NULL); |
| rtnl_register(PF_DECnet, RTM_DELADDR, dn_nl_deladdr, NULL); |
| rtnl_register(PF_DECnet, RTM_GETADDR, NULL, dn_nl_dump_ifaddr); |
| |
| proc_net_fops_create(&init_net, "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) |
| { |
| #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(&init_net, "decnet_dev"); |
| |
| dn_dev_devices_off(); |
| } |