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net/appletalk/ddp.c
48.3 KB
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/* * DDP: An implementation of the AppleTalk DDP protocol for * Ethernet 'ELAP'. * |
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* Alan Cox <alan@lxorguk.ukuu.org.uk> |
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* * With more than a little assistance from * * Wesley Craig <netatalk@umich.edu> * * Fixes: * Neil Horman : Added missing device ioctls * Michael Callahan : Made routing work * Wesley Craig : Fix probing to listen to a * passed node id. * Alan Cox : Added send/recvmsg support * Alan Cox : Moved at. to protinfo in * socket. * Alan Cox : Added firewall hooks. * Alan Cox : Supports new ARPHRD_LOOPBACK * Christer Weinigel : Routing and /proc fixes. * Bradford Johnson : LocalTalk. * Tom Dyas : Module support. * Alan Cox : Hooks for PPP (based on the * LocalTalk hook). * Alan Cox : Posix bits * Alan Cox/Mike Freeman : Possible fix to NBP problems * Bradford Johnson : IP-over-DDP (experimental) * Jay Schulist : Moved IP-over-DDP to its own * driver file. (ipddp.c & ipddp.h) |
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* Jay Schulist : Made work as module with |
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* AppleTalk drivers, cleaned it. * Rob Newberry : Added proxy AARP and AARP * procfs, moved probing to AARP * module. |
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* Adrian Sun/ * Michael Zuelsdorff : fix for net.0 packets. don't |
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* allow illegal ether/tokentalk |
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* port assignment. we lose a * valid localtalk port as a |
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* result. * Arnaldo C. de Melo : Cleanup, in preparation for * shared skb support 8) * Arnaldo C. de Melo : Move proc stuff to atalk_proc.c, * use seq_file * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. |
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* |
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*/ |
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#include <linux/capability.h> |
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#include <linux/module.h> |
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#include <linux/if_arp.h> #include <linux/termios.h> /* For TIOCOUTQ/INQ */ |
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#include <linux/compat.h> |
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#include <linux/slab.h> |
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#include <net/datalink.h> #include <net/psnap.h> #include <net/sock.h> |
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#include <net/tcp_states.h> |
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#include <net/route.h> #include <linux/atalk.h> |
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#include "../core/kmap_skb.h" |
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struct datalink_proto *ddp_dl, *aarp_dl; |
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static const struct proto_ops atalk_dgram_ops; |
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/**************************************************************************\ * * * Handlers for the socket list. * * * \**************************************************************************/ HLIST_HEAD(atalk_sockets); DEFINE_RWLOCK(atalk_sockets_lock); static inline void __atalk_insert_socket(struct sock *sk) { sk_add_node(sk, &atalk_sockets); } static inline void atalk_remove_socket(struct sock *sk) { write_lock_bh(&atalk_sockets_lock); sk_del_node_init(sk); write_unlock_bh(&atalk_sockets_lock); } static struct sock *atalk_search_socket(struct sockaddr_at *to, struct atalk_iface *atif) { struct sock *s; struct hlist_node *node; read_lock_bh(&atalk_sockets_lock); sk_for_each(s, node, &atalk_sockets) { struct atalk_sock *at = at_sk(s); if (to->sat_port != at->src_port) continue; |
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if (to->sat_addr.s_net == ATADDR_ANYNET && |
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to->sat_addr.s_node == ATADDR_BCAST) |
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goto found; |
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if (to->sat_addr.s_net == at->src_net && |
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(to->sat_addr.s_node == at->src_node || to->sat_addr.s_node == ATADDR_BCAST || to->sat_addr.s_node == ATADDR_ANYNODE)) goto found; |
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/* XXXX.0 -- we got a request for this router. make sure |
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* that the node is appropriately set. */ if (to->sat_addr.s_node == ATADDR_ANYNODE && to->sat_addr.s_net != ATADDR_ANYNET && atif->address.s_node == at->src_node) { to->sat_addr.s_node = atif->address.s_node; goto found; } } s = NULL; found: read_unlock_bh(&atalk_sockets_lock); return s; } /** * atalk_find_or_insert_socket - Try to find a socket matching ADDR * @sk - socket to insert in the list if it is not there already * @sat - address to search for * * Try to find a socket matching ADDR in the socket list, if found then return * it. If not, insert SK into the socket list. * * This entire operation must execute atomically. */ static struct sock *atalk_find_or_insert_socket(struct sock *sk, struct sockaddr_at *sat) { struct sock *s; struct hlist_node *node; struct atalk_sock *at; write_lock_bh(&atalk_sockets_lock); sk_for_each(s, node, &atalk_sockets) { at = at_sk(s); if (at->src_net == sat->sat_addr.s_net && at->src_node == sat->sat_addr.s_node && at->src_port == sat->sat_port) goto found; } s = NULL; __atalk_insert_socket(sk); /* Wheee, it's free, assign and insert. */ found: write_unlock_bh(&atalk_sockets_lock); return s; } static void atalk_destroy_timer(unsigned long data) { struct sock *sk = (struct sock *)data; |
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if (sk_has_allocations(sk)) { |
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sk->sk_timer.expires = jiffies + SOCK_DESTROY_TIME; add_timer(&sk->sk_timer); } else sock_put(sk); } static inline void atalk_destroy_socket(struct sock *sk) { atalk_remove_socket(sk); skb_queue_purge(&sk->sk_receive_queue); |
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if (sk_has_allocations(sk)) { |
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setup_timer(&sk->sk_timer, atalk_destroy_timer, (unsigned long)sk); |
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sk->sk_timer.expires = jiffies + SOCK_DESTROY_TIME; |
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add_timer(&sk->sk_timer); } else sock_put(sk); } /**************************************************************************\ * * * Routing tables for the AppleTalk socket layer. * * * \**************************************************************************/ /* Anti-deadlock ordering is atalk_routes_lock --> iface_lock -DaveM */ struct atalk_route *atalk_routes; DEFINE_RWLOCK(atalk_routes_lock); struct atalk_iface *atalk_interfaces; DEFINE_RWLOCK(atalk_interfaces_lock); /* For probing devices or in a routerless network */ struct atalk_route atrtr_default; /* AppleTalk interface control */ /* * Drop a device. Doesn't drop any of its routes - that is the caller's * problem. Called when we down the interface or delete the address. */ static void atif_drop_device(struct net_device *dev) { struct atalk_iface **iface = &atalk_interfaces; struct atalk_iface *tmp; write_lock_bh(&atalk_interfaces_lock); while ((tmp = *iface) != NULL) { if (tmp->dev == dev) { *iface = tmp->next; dev_put(dev); kfree(tmp); dev->atalk_ptr = NULL; } else iface = &tmp->next; } write_unlock_bh(&atalk_interfaces_lock); } static struct atalk_iface *atif_add_device(struct net_device *dev, struct atalk_addr *sa) { |
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struct atalk_iface *iface = kzalloc(sizeof(*iface), GFP_KERNEL); |
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if (!iface) goto out; |
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dev_hold(dev); iface->dev = dev; dev->atalk_ptr = iface; iface->address = *sa; iface->status = 0; write_lock_bh(&atalk_interfaces_lock); iface->next = atalk_interfaces; atalk_interfaces = iface; write_unlock_bh(&atalk_interfaces_lock); out: return iface; } /* Perform phase 2 AARP probing on our tentative address */ static int atif_probe_device(struct atalk_iface *atif) { int netrange = ntohs(atif->nets.nr_lastnet) - ntohs(atif->nets.nr_firstnet) + 1; int probe_net = ntohs(atif->address.s_net); int probe_node = atif->address.s_node; int netct, nodect; /* Offset the network we start probing with */ if (probe_net == ATADDR_ANYNET) { probe_net = ntohs(atif->nets.nr_firstnet); if (netrange) probe_net += jiffies % netrange; } if (probe_node == ATADDR_ANYNODE) probe_node = jiffies & 0xFF; /* Scan the networks */ atif->status |= ATIF_PROBE; for (netct = 0; netct <= netrange; netct++) { /* Sweep the available nodes from a given start */ atif->address.s_net = htons(probe_net); for (nodect = 0; nodect < 256; nodect++) { atif->address.s_node = (nodect + probe_node) & 0xFF; if (atif->address.s_node > 0 && atif->address.s_node < 254) { /* Probe a proposed address */ aarp_probe_network(atif); if (!(atif->status & ATIF_PROBE_FAIL)) { atif->status &= ~ATIF_PROBE; return 0; } } atif->status &= ~ATIF_PROBE_FAIL; } probe_net++; if (probe_net > ntohs(atif->nets.nr_lastnet)) probe_net = ntohs(atif->nets.nr_firstnet); } atif->status &= ~ATIF_PROBE; return -EADDRINUSE; /* Network is full... */ } /* Perform AARP probing for a proxy address */ static int atif_proxy_probe_device(struct atalk_iface *atif, struct atalk_addr* proxy_addr) { int netrange = ntohs(atif->nets.nr_lastnet) - ntohs(atif->nets.nr_firstnet) + 1; /* we probe the interface's network */ int probe_net = ntohs(atif->address.s_net); int probe_node = ATADDR_ANYNODE; /* we'll take anything */ int netct, nodect; /* Offset the network we start probing with */ if (probe_net == ATADDR_ANYNET) { probe_net = ntohs(atif->nets.nr_firstnet); if (netrange) probe_net += jiffies % netrange; } if (probe_node == ATADDR_ANYNODE) probe_node = jiffies & 0xFF; |
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/* Scan the networks */ for (netct = 0; netct <= netrange; netct++) { /* Sweep the available nodes from a given start */ proxy_addr->s_net = htons(probe_net); for (nodect = 0; nodect < 256; nodect++) { proxy_addr->s_node = (nodect + probe_node) & 0xFF; if (proxy_addr->s_node > 0 && proxy_addr->s_node < 254) { /* Tell AARP to probe a proposed address */ int ret = aarp_proxy_probe_network(atif, proxy_addr); if (ret != -EADDRINUSE) return ret; } } probe_net++; if (probe_net > ntohs(atif->nets.nr_lastnet)) probe_net = ntohs(atif->nets.nr_firstnet); } return -EADDRINUSE; /* Network is full... */ } struct atalk_addr *atalk_find_dev_addr(struct net_device *dev) { struct atalk_iface *iface = dev->atalk_ptr; return iface ? &iface->address : NULL; } static struct atalk_addr *atalk_find_primary(void) { struct atalk_iface *fiface = NULL; struct atalk_addr *retval; struct atalk_iface *iface; /* * Return a point-to-point interface only if * there is no non-ptp interface available. */ read_lock_bh(&atalk_interfaces_lock); for (iface = atalk_interfaces; iface; iface = iface->next) { if (!fiface && !(iface->dev->flags & IFF_LOOPBACK)) fiface = iface; if (!(iface->dev->flags & (IFF_LOOPBACK | IFF_POINTOPOINT))) { retval = &iface->address; goto out; } } if (fiface) retval = &fiface->address; else if (atalk_interfaces) retval = &atalk_interfaces->address; else retval = NULL; out: read_unlock_bh(&atalk_interfaces_lock); return retval; } /* * Find a match for 'any network' - ie any of our interfaces with that * node number will do just nicely. */ static struct atalk_iface *atalk_find_anynet(int node, struct net_device *dev) { struct atalk_iface *iface = dev->atalk_ptr; if (!iface || iface->status & ATIF_PROBE) goto out_err; if (node != ATADDR_BCAST && iface->address.s_node != node && node != ATADDR_ANYNODE) goto out_err; out: return iface; out_err: iface = NULL; goto out; } /* Find a match for a specific network:node pair */ |
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static struct atalk_iface *atalk_find_interface(__be16 net, int node) |
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{ struct atalk_iface *iface; read_lock_bh(&atalk_interfaces_lock); for (iface = atalk_interfaces; iface; iface = iface->next) { if ((node == ATADDR_BCAST || node == ATADDR_ANYNODE || iface->address.s_node == node) && iface->address.s_net == net && !(iface->status & ATIF_PROBE)) break; /* XXXX.0 -- net.0 returns the iface associated with net */ if (node == ATADDR_ANYNODE && net != ATADDR_ANYNET && ntohs(iface->nets.nr_firstnet) <= ntohs(net) && ntohs(net) <= ntohs(iface->nets.nr_lastnet)) |
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break; |
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} read_unlock_bh(&atalk_interfaces_lock); return iface; } /* * Find a route for an AppleTalk packet. This ought to get cached in * the socket (later on...). We know about host routes and the fact * that a route must be direct to broadcast. */ static struct atalk_route *atrtr_find(struct atalk_addr *target) { /* |
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* host route, because some host routes might overlap * network routes */ struct atalk_route *net_route = NULL; struct atalk_route *r; |
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read_lock_bh(&atalk_routes_lock); for (r = atalk_routes; r; r = r->next) { if (!(r->flags & RTF_UP)) continue; if (r->target.s_net == target->s_net) { if (r->flags & RTF_HOST) { /* * if this host route is for the target, * the we're done */ if (r->target.s_node == target->s_node) goto out; } else /* * this route will work if there isn't a * direct host route, so cache it */ net_route = r; } } |
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/* |
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* if we found a network route but not a direct host * route, then return it */ if (net_route) r = net_route; else if (atrtr_default.dev) r = &atrtr_default; else /* No route can be found */ r = NULL; out: read_unlock_bh(&atalk_routes_lock); return r; } /* * Given an AppleTalk network, find the device to use. This can be * a simple lookup. */ struct net_device *atrtr_get_dev(struct atalk_addr *sa) { struct atalk_route *atr = atrtr_find(sa); return atr ? atr->dev : NULL; } /* Set up a default router */ static void atrtr_set_default(struct net_device *dev) { atrtr_default.dev = dev; atrtr_default.flags = RTF_UP; atrtr_default.gateway.s_net = htons(0); atrtr_default.gateway.s_node = 0; } /* * Add a router. Basically make sure it looks valid and stuff the * entry in the list. While it uses netranges we always set them to one * entry to work like netatalk. */ static int atrtr_create(struct rtentry *r, struct net_device *devhint) { struct sockaddr_at *ta = (struct sockaddr_at *)&r->rt_dst; struct sockaddr_at *ga = (struct sockaddr_at *)&r->rt_gateway; struct atalk_route *rt; struct atalk_iface *iface, *riface; int retval = -EINVAL; /* * Fixme: Raise/Lower a routing change semaphore for these * operations. */ /* Validate the request */ if (ta->sat_family != AF_APPLETALK || (!devhint && ga->sat_family != AF_APPLETALK)) goto out; /* Now walk the routing table and make our decisions */ write_lock_bh(&atalk_routes_lock); for (rt = atalk_routes; rt; rt = rt->next) { if (r->rt_flags != rt->flags) continue; if (ta->sat_addr.s_net == rt->target.s_net) { if (!(rt->flags & RTF_HOST)) break; if (ta->sat_addr.s_node == rt->target.s_node) break; } } if (!devhint) { riface = NULL; read_lock_bh(&atalk_interfaces_lock); for (iface = atalk_interfaces; iface; iface = iface->next) { if (!riface && ntohs(ga->sat_addr.s_net) >= |
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ntohs(ga->sat_addr.s_net) <= |
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ntohs(iface->nets.nr_lastnet)) |
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riface = iface; if (ga->sat_addr.s_net == iface->address.s_net && ga->sat_addr.s_node == iface->address.s_node) riface = iface; |
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} |
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read_unlock_bh(&atalk_interfaces_lock); retval = -ENETUNREACH; if (!riface) goto out_unlock; devhint = riface->dev; } if (!rt) { |
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rt = kzalloc(sizeof(*rt), GFP_ATOMIC); |
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retval = -ENOBUFS; if (!rt) goto out_unlock; |
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rt->next = atalk_routes; atalk_routes = rt; } /* Fill in the routing entry */ rt->target = ta->sat_addr; |
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dev_hold(devhint); |
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rt->dev = devhint; rt->flags = r->rt_flags; rt->gateway = ga->sat_addr; retval = 0; out_unlock: write_unlock_bh(&atalk_routes_lock); out: return retval; } /* Delete a route. Find it and discard it */ static int atrtr_delete(struct atalk_addr * addr) { struct atalk_route **r = &atalk_routes; int retval = 0; struct atalk_route *tmp; write_lock_bh(&atalk_routes_lock); while ((tmp = *r) != NULL) { if (tmp->target.s_net == addr->s_net && (!(tmp->flags&RTF_GATEWAY) || tmp->target.s_node == addr->s_node)) { *r = tmp->next; dev_put(tmp->dev); kfree(tmp); goto out; } r = &tmp->next; } retval = -ENOENT; out: write_unlock_bh(&atalk_routes_lock); return retval; } /* * Called when a device is downed. Just throw away any routes * via it. */ static void atrtr_device_down(struct net_device *dev) { struct atalk_route **r = &atalk_routes; struct atalk_route *tmp; write_lock_bh(&atalk_routes_lock); while ((tmp = *r) != NULL) { if (tmp->dev == dev) { *r = tmp->next; dev_put(dev); kfree(tmp); } else r = &tmp->next; } write_unlock_bh(&atalk_routes_lock); if (atrtr_default.dev == dev) atrtr_set_default(NULL); } /* Actually down the interface */ static inline void atalk_dev_down(struct net_device *dev) { atrtr_device_down(dev); /* Remove all routes for the device */ aarp_device_down(dev); /* Remove AARP entries for the device */ atif_drop_device(dev); /* Remove the device */ } /* * A device event has occurred. Watch for devices going down and * delete our use of them (iface and route). */ static int ddp_device_event(struct notifier_block *this, unsigned long event, void *ptr) { |
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struct net_device *dev = ptr; |
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if (!net_eq(dev_net(dev), &init_net)) |
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return NOTIFY_DONE; |
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if (event == NETDEV_DOWN) /* Discard any use of this */ |
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atalk_dev_down(dev); |
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return NOTIFY_DONE; } /* ioctl calls. Shouldn't even need touching */ /* Device configuration ioctl calls */ static int atif_ioctl(int cmd, void __user *arg) { static char aarp_mcast[6] = { 0x09, 0x00, 0x00, 0xFF, 0xFF, 0xFF }; struct ifreq atreq; struct atalk_netrange *nr; struct sockaddr_at *sa; struct net_device *dev; struct atalk_iface *atif; int ct; int limit; struct rtentry rtdef; int add_route; if (copy_from_user(&atreq, arg, sizeof(atreq))) return -EFAULT; |
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dev = __dev_get_by_name(&init_net, atreq.ifr_name); |
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if (!dev) return -ENODEV; sa = (struct sockaddr_at *)&atreq.ifr_addr; atif = atalk_find_dev(dev); switch (cmd) { |
4a9e4b093 appletalk: Reduce... |
677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 |
case SIOCSIFADDR: if (!capable(CAP_NET_ADMIN)) return -EPERM; if (sa->sat_family != AF_APPLETALK) return -EINVAL; if (dev->type != ARPHRD_ETHER && dev->type != ARPHRD_LOOPBACK && dev->type != ARPHRD_LOCALTLK && dev->type != ARPHRD_PPP) return -EPROTONOSUPPORT; nr = (struct atalk_netrange *)&sa->sat_zero[0]; add_route = 1; /* * if this is a point-to-point iface, and we already * have an iface for this AppleTalk address, then we * should not add a route */ if ((dev->flags & IFF_POINTOPOINT) && atalk_find_interface(sa->sat_addr.s_net, sa->sat_addr.s_node)) { printk(KERN_DEBUG "AppleTalk: point-to-point " "interface added with " "existing address "); add_route = 0; } |
1da177e4c Linux-2.6.12-rc2 |
705 |
|
4a9e4b093 appletalk: Reduce... |
706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 |
/* * Phase 1 is fine on LocalTalk but we don't do * EtherTalk phase 1. Anyone wanting to add it go ahead. */ if (dev->type == ARPHRD_ETHER && nr->nr_phase != 2) return -EPROTONOSUPPORT; if (sa->sat_addr.s_node == ATADDR_BCAST || sa->sat_addr.s_node == 254) return -EINVAL; if (atif) { /* Already setting address */ if (atif->status & ATIF_PROBE) return -EBUSY; atif->address.s_net = sa->sat_addr.s_net; atif->address.s_node = sa->sat_addr.s_node; atrtr_device_down(dev); /* Flush old routes */ } else { atif = atif_add_device(dev, &sa->sat_addr); |
1da177e4c Linux-2.6.12-rc2 |
725 |
if (!atif) |
4a9e4b093 appletalk: Reduce... |
726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 |
return -ENOMEM; } atif->nets = *nr; /* * Check if the chosen address is used. If so we * error and atalkd will try another. */ if (!(dev->flags & IFF_LOOPBACK) && !(dev->flags & IFF_POINTOPOINT) && atif_probe_device(atif) < 0) { atif_drop_device(dev); return -EADDRINUSE; } |
1da177e4c Linux-2.6.12-rc2 |
741 |
|
4a9e4b093 appletalk: Reduce... |
742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 |
/* Hey it worked - add the direct routes */ sa = (struct sockaddr_at *)&rtdef.rt_gateway; sa->sat_family = AF_APPLETALK; sa->sat_addr.s_net = atif->address.s_net; sa->sat_addr.s_node = atif->address.s_node; sa = (struct sockaddr_at *)&rtdef.rt_dst; rtdef.rt_flags = RTF_UP; sa->sat_family = AF_APPLETALK; sa->sat_addr.s_node = ATADDR_ANYNODE; if (dev->flags & IFF_LOOPBACK || dev->flags & IFF_POINTOPOINT) rtdef.rt_flags |= RTF_HOST; /* Routerless initial state */ if (nr->nr_firstnet == htons(0) && nr->nr_lastnet == htons(0xFFFE)) { |
1da177e4c Linux-2.6.12-rc2 |
758 |
sa->sat_addr.s_net = atif->address.s_net; |
4a9e4b093 appletalk: Reduce... |
759 760 761 762 763 764 765 766 |
atrtr_create(&rtdef, dev); atrtr_set_default(dev); } else { limit = ntohs(nr->nr_lastnet); if (limit - ntohs(nr->nr_firstnet) > 4096) { printk(KERN_WARNING "Too many routes/" "iface. "); |
1da177e4c Linux-2.6.12-rc2 |
767 |
return -EINVAL; |
4a9e4b093 appletalk: Reduce... |
768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 |
} if (add_route) for (ct = ntohs(nr->nr_firstnet); ct <= limit; ct++) { sa->sat_addr.s_net = htons(ct); atrtr_create(&rtdef, dev); } } dev_mc_add_global(dev, aarp_mcast); return 0; case SIOCGIFADDR: if (!atif) return -EADDRNOTAVAIL; sa->sat_family = AF_APPLETALK; sa->sat_addr = atif->address; break; case SIOCGIFBRDADDR: if (!atif) return -EADDRNOTAVAIL; sa->sat_family = AF_APPLETALK; sa->sat_addr.s_net = atif->address.s_net; sa->sat_addr.s_node = ATADDR_BCAST; break; case SIOCATALKDIFADDR: case SIOCDIFADDR: if (!capable(CAP_NET_ADMIN)) return -EPERM; if (sa->sat_family != AF_APPLETALK) return -EINVAL; atalk_dev_down(dev); break; case SIOCSARP: if (!capable(CAP_NET_ADMIN)) return -EPERM; if (sa->sat_family != AF_APPLETALK) return -EINVAL; /* * for now, we only support proxy AARP on ELAP; * we should be able to do it for LocalTalk, too. */ if (dev->type != ARPHRD_ETHER) return -EPROTONOSUPPORT; /* * atif points to the current interface on this network; * we aren't concerned about its current status (at * least for now), but it has all the settings about * the network we're going to probe. Consequently, it * must exist. */ if (!atif) return -EADDRNOTAVAIL; nr = (struct atalk_netrange *)&(atif->nets); /* * Phase 1 is fine on Localtalk but we don't do * Ethertalk phase 1. Anyone wanting to add it go ahead. */ if (dev->type == ARPHRD_ETHER && nr->nr_phase != 2) return -EPROTONOSUPPORT; if (sa->sat_addr.s_node == ATADDR_BCAST || sa->sat_addr.s_node == 254) return -EINVAL; /* * Check if the chosen address is used. If so we * error and ATCP will try another. */ if (atif_proxy_probe_device(atif, &(sa->sat_addr)) < 0) return -EADDRINUSE; /* * We now have an address on the local network, and * the AARP code will defend it for us until we take it * down. We don't set up any routes right now, because * ATCP will install them manually via SIOCADDRT. */ break; case SIOCDARP: if (!capable(CAP_NET_ADMIN)) return -EPERM; if (sa->sat_family != AF_APPLETALK) return -EINVAL; if (!atif) return -EADDRNOTAVAIL; /* give to aarp module to remove proxy entry */ aarp_proxy_remove(atif->dev, &(sa->sat_addr)); return 0; |
1da177e4c Linux-2.6.12-rc2 |
865 866 867 868 869 870 871 872 873 874 875 876 877 878 |
} return copy_to_user(arg, &atreq, sizeof(atreq)) ? -EFAULT : 0; } /* Routing ioctl() calls */ static int atrtr_ioctl(unsigned int cmd, void __user *arg) { struct rtentry rt; if (copy_from_user(&rt, arg, sizeof(rt))) return -EFAULT; switch (cmd) { |
4a9e4b093 appletalk: Reduce... |
879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 |
case SIOCDELRT: if (rt.rt_dst.sa_family != AF_APPLETALK) return -EINVAL; return atrtr_delete(&((struct sockaddr_at *) &rt.rt_dst)->sat_addr); case SIOCADDRT: { struct net_device *dev = NULL; if (rt.rt_dev) { char name[IFNAMSIZ]; if (copy_from_user(name, rt.rt_dev, IFNAMSIZ-1)) return -EFAULT; name[IFNAMSIZ-1] = '\0'; dev = __dev_get_by_name(&init_net, name); if (!dev) return -ENODEV; |
1da177e4c Linux-2.6.12-rc2 |
895 |
} |
4a9e4b093 appletalk: Reduce... |
896 897 |
return atrtr_create(&rt, dev); } |
1da177e4c Linux-2.6.12-rc2 |
898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 |
} return -EINVAL; } /**************************************************************************\ * * * Handling for system calls applied via the various interfaces to an * * AppleTalk socket object. * * * \**************************************************************************/ /* * Checksum: This is 'optional'. It's quite likely also a good * candidate for assembler hackery 8) */ |
ed4477b96 [NET] APPLETALK: ... |
913 |
static unsigned long atalk_sum_partial(const unsigned char *data, |
1da177e4c Linux-2.6.12-rc2 |
914 915 916 917 |
int len, unsigned long sum) { /* This ought to be unwrapped neatly. I'll trust gcc for now */ while (len--) { |
f7a3a1d8a appletalk/ddp.c: ... |
918 919 |
sum += *data++; sum = rol16(sum, 1); |
1da177e4c Linux-2.6.12-rc2 |
920 921 922 923 924 925 926 927 |
} return sum; } /* Checksum skb data -- similar to skb_checksum */ static unsigned long atalk_sum_skb(const struct sk_buff *skb, int offset, int len, unsigned long sum) { |
1a028e507 [NET]: Revert sk_... |
928 |
int start = skb_headlen(skb); |
c32ba3f9b appletalk: Use fr... |
929 |
struct sk_buff *frag_iter; |
1da177e4c Linux-2.6.12-rc2 |
930 931 932 |
int i, copy; /* checksum stuff in header space */ |
1a028e507 [NET]: Revert sk_... |
933 |
if ( (copy = start - offset) > 0) { |
1da177e4c Linux-2.6.12-rc2 |
934 935 936 |
if (copy > len) copy = len; sum = atalk_sum_partial(skb->data + offset, copy, sum); |
ed4477b96 [NET] APPLETALK: ... |
937 |
if ( (len -= copy) == 0) |
1da177e4c Linux-2.6.12-rc2 |
938 939 940 941 942 943 944 |
return sum; offset += copy; } /* checksum stuff in frags */ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
1a028e507 [NET]: Revert sk_... |
945 |
int end; |
9e903e085 net: add skb frag... |
946 |
const skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
547b792ca net: convert BUG_... |
947 |
WARN_ON(start > offset + len); |
1a028e507 [NET]: Revert sk_... |
948 |
|
9e903e085 net: add skb frag... |
949 |
end = start + skb_frag_size(frag); |
1da177e4c Linux-2.6.12-rc2 |
950 951 |
if ((copy = end - offset) > 0) { u8 *vaddr; |
1da177e4c Linux-2.6.12-rc2 |
952 953 954 955 |
if (copy > len) copy = len; vaddr = kmap_skb_frag(frag); |
1a028e507 [NET]: Revert sk_... |
956 957 |
sum = atalk_sum_partial(vaddr + frag->page_offset + offset - start, copy, sum); |
1da177e4c Linux-2.6.12-rc2 |
958 959 960 961 962 963 |
kunmap_skb_frag(vaddr); if (!(len -= copy)) return sum; offset += copy; } |
1a028e507 [NET]: Revert sk_... |
964 |
start = end; |
1da177e4c Linux-2.6.12-rc2 |
965 |
} |
c32ba3f9b appletalk: Use fr... |
966 967 |
skb_walk_frags(skb, frag_iter) { int end; |
1a028e507 [NET]: Revert sk_... |
968 |
|
c32ba3f9b appletalk: Use fr... |
969 |
WARN_ON(start > offset + len); |
1da177e4c Linux-2.6.12-rc2 |
970 |
|
c32ba3f9b appletalk: Use fr... |
971 972 973 974 975 976 977 978 979 |
end = start + frag_iter->len; if ((copy = end - offset) > 0) { if (copy > len) copy = len; sum = atalk_sum_skb(frag_iter, offset - start, copy, sum); if ((len -= copy) == 0) return sum; offset += copy; |
1da177e4c Linux-2.6.12-rc2 |
980 |
} |
c32ba3f9b appletalk: Use fr... |
981 |
start = end; |
1da177e4c Linux-2.6.12-rc2 |
982 983 984 985 986 987 |
} BUG_ON(len > 0); return sum; } |
2a50f28c3 [ATALK]: endianne... |
988 |
static __be16 atalk_checksum(const struct sk_buff *skb, int len) |
1da177e4c Linux-2.6.12-rc2 |
989 990 991 992 993 994 995 |
{ unsigned long sum; /* skip header 4 bytes */ sum = atalk_sum_skb(skb, 4, len-4, 0); /* Use 0xFFFF for 0. 0 itself means none */ |
2a50f28c3 [ATALK]: endianne... |
996 |
return sum ? htons((unsigned short)sum) : htons(0xFFFF); |
1da177e4c Linux-2.6.12-rc2 |
997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 |
} static struct proto ddp_proto = { .name = "DDP", .owner = THIS_MODULE, .obj_size = sizeof(struct atalk_sock), }; /* * Create a socket. Initialise the socket, blank the addresses * set the state. */ |
3f378b684 net: pass kern to... |
1009 1010 |
static int atalk_create(struct net *net, struct socket *sock, int protocol, int kern) |
1da177e4c Linux-2.6.12-rc2 |
1011 1012 1013 |
{ struct sock *sk; int rc = -ESOCKTNOSUPPORT; |
09ad9bc75 net: use net_eq t... |
1014 |
if (!net_eq(net, &init_net)) |
1b8d7ae42 [NET]: Make socke... |
1015 |
return -EAFNOSUPPORT; |
1da177e4c Linux-2.6.12-rc2 |
1016 1017 |
/* * We permit SOCK_DGRAM and RAW is an extension. It is trivial to do |
ed4477b96 [NET] APPLETALK: ... |
1018 |
* and gives you the full ELAP frame. Should be handy for CAP 8) |
1da177e4c Linux-2.6.12-rc2 |
1019 1020 1021 1022 |
*/ if (sock->type != SOCK_RAW && sock->type != SOCK_DGRAM) goto out; rc = -ENOMEM; |
6257ff217 [NET]: Forget the... |
1023 |
sk = sk_alloc(net, PF_APPLETALK, GFP_KERNEL, &ddp_proto); |
1da177e4c Linux-2.6.12-rc2 |
1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 |
if (!sk) goto out; rc = 0; sock->ops = &atalk_dgram_ops; sock_init_data(sock, sk); /* Checksums on by default */ sock_set_flag(sk, SOCK_ZAPPED); out: return rc; } /* Free a socket. No work needed */ static int atalk_release(struct socket *sock) { struct sock *sk = sock->sk; if (sk) { |
c100c8f4c appletalk: Fix OO... |
1042 1043 |
sock_hold(sk); lock_sock(sk); |
1da177e4c Linux-2.6.12-rc2 |
1044 1045 1046 |
sock_orphan(sk); sock->sk = NULL; atalk_destroy_socket(sk); |
b20e7bbfc net/appletalk: fi... |
1047 |
|
c100c8f4c appletalk: Fix OO... |
1048 1049 1050 |
release_sock(sk); sock_put(sk); } |
1da177e4c Linux-2.6.12-rc2 |
1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 |
return 0; } /** * atalk_pick_and_bind_port - Pick a source port when one is not given * @sk - socket to insert into the tables * @sat - address to search for * * Pick a source port when one is not given. If we can find a suitable free * one, we insert the socket into the tables using it. * * This whole operation must be atomic. */ static int atalk_pick_and_bind_port(struct sock *sk, struct sockaddr_at *sat) { int retval; write_lock_bh(&atalk_sockets_lock); for (sat->sat_port = ATPORT_RESERVED; sat->sat_port < ATPORT_LAST; sat->sat_port++) { struct sock *s; struct hlist_node *node; sk_for_each(s, node, &atalk_sockets) { struct atalk_sock *at = at_sk(s); if (at->src_net == sat->sat_addr.s_net && at->src_node == sat->sat_addr.s_node && at->src_port == sat->sat_port) goto try_next_port; } /* Wheee, it's free, assign and insert. */ __atalk_insert_socket(sk); at_sk(sk)->src_port = sat->sat_port; retval = 0; goto out; try_next_port:; } retval = -EBUSY; out: write_unlock_bh(&atalk_sockets_lock); return retval; } static int atalk_autobind(struct sock *sk) { struct atalk_sock *at = at_sk(sk); struct sockaddr_at sat; struct atalk_addr *ap = atalk_find_primary(); int n = -EADDRNOTAVAIL; if (!ap || ap->s_net == htons(ATADDR_ANYNET)) goto out; at->src_net = sat.sat_addr.s_net = ap->s_net; at->src_node = sat.sat_addr.s_node = ap->s_node; n = atalk_pick_and_bind_port(sk, &sat); if (!n) sock_reset_flag(sk, SOCK_ZAPPED); out: return n; } /* Set the address 'our end' of the connection */ static int atalk_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) { struct sockaddr_at *addr = (struct sockaddr_at *)uaddr; struct sock *sk = sock->sk; struct atalk_sock *at = at_sk(sk); |
ecced8ba8 net/appletalk: pu... |
1126 |
int err; |
1da177e4c Linux-2.6.12-rc2 |
1127 1128 1129 1130 1131 1132 1133 |
if (!sock_flag(sk, SOCK_ZAPPED) || addr_len != sizeof(struct sockaddr_at)) return -EINVAL; if (addr->sat_family != AF_APPLETALK) return -EAFNOSUPPORT; |
60d9f461a appletalk: remove... |
1134 |
lock_sock(sk); |
1da177e4c Linux-2.6.12-rc2 |
1135 1136 |
if (addr->sat_addr.s_net == htons(ATADDR_ANYNET)) { struct atalk_addr *ap = atalk_find_primary(); |
ecced8ba8 net/appletalk: pu... |
1137 |
err = -EADDRNOTAVAIL; |
1da177e4c Linux-2.6.12-rc2 |
1138 |
if (!ap) |
ecced8ba8 net/appletalk: pu... |
1139 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1140 1141 1142 1143 |
at->src_net = addr->sat_addr.s_net = ap->s_net; at->src_node = addr->sat_addr.s_node= ap->s_node; } else { |
ecced8ba8 net/appletalk: pu... |
1144 |
err = -EADDRNOTAVAIL; |
1da177e4c Linux-2.6.12-rc2 |
1145 1146 |
if (!atalk_find_interface(addr->sat_addr.s_net, addr->sat_addr.s_node)) |
ecced8ba8 net/appletalk: pu... |
1147 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1148 1149 1150 1151 1152 1153 |
at->src_net = addr->sat_addr.s_net; at->src_node = addr->sat_addr.s_node; } if (addr->sat_port == ATADDR_ANYPORT) { |
ecced8ba8 net/appletalk: pu... |
1154 |
err = atalk_pick_and_bind_port(sk, addr); |
1da177e4c Linux-2.6.12-rc2 |
1155 |
|
ecced8ba8 net/appletalk: pu... |
1156 1157 |
if (err < 0) goto out; |
1da177e4c Linux-2.6.12-rc2 |
1158 1159 |
} else { at->src_port = addr->sat_port; |
ecced8ba8 net/appletalk: pu... |
1160 |
err = -EADDRINUSE; |
1da177e4c Linux-2.6.12-rc2 |
1161 |
if (atalk_find_or_insert_socket(sk, addr)) |
ecced8ba8 net/appletalk: pu... |
1162 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1163 1164 1165 |
} sock_reset_flag(sk, SOCK_ZAPPED); |
ecced8ba8 net/appletalk: pu... |
1166 1167 |
err = 0; out: |
60d9f461a appletalk: remove... |
1168 |
release_sock(sk); |
ecced8ba8 net/appletalk: pu... |
1169 |
return err; |
1da177e4c Linux-2.6.12-rc2 |
1170 1171 1172 1173 1174 1175 1176 1177 1178 |
} /* Set the address we talk to */ static int atalk_connect(struct socket *sock, struct sockaddr *uaddr, int addr_len, int flags) { struct sock *sk = sock->sk; struct atalk_sock *at = at_sk(sk); struct sockaddr_at *addr; |
ecced8ba8 net/appletalk: pu... |
1179 |
int err; |
1da177e4c Linux-2.6.12-rc2 |
1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 |
sk->sk_state = TCP_CLOSE; sock->state = SS_UNCONNECTED; if (addr_len != sizeof(*addr)) return -EINVAL; addr = (struct sockaddr_at *)uaddr; if (addr->sat_family != AF_APPLETALK) return -EAFNOSUPPORT; if (addr->sat_addr.s_node == ATADDR_BCAST && !sock_flag(sk, SOCK_BROADCAST)) { |
ed4477b96 [NET] APPLETALK: ... |
1194 |
#if 1 |
1da177e4c Linux-2.6.12-rc2 |
1195 1196 1197 1198 1199 1200 1201 |
printk(KERN_WARNING "%s is broken and did not set " "SO_BROADCAST. It will break when 2.2 is " "released. ", current->comm); #else return -EACCES; |
ed4477b96 [NET] APPLETALK: ... |
1202 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
1203 |
} |
60d9f461a appletalk: remove... |
1204 |
lock_sock(sk); |
ecced8ba8 net/appletalk: pu... |
1205 |
err = -EBUSY; |
1da177e4c Linux-2.6.12-rc2 |
1206 1207 |
if (sock_flag(sk, SOCK_ZAPPED)) if (atalk_autobind(sk) < 0) |
ecced8ba8 net/appletalk: pu... |
1208 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1209 |
|
ecced8ba8 net/appletalk: pu... |
1210 |
err = -ENETUNREACH; |
1da177e4c Linux-2.6.12-rc2 |
1211 |
if (!atrtr_get_dev(&addr->sat_addr)) |
ecced8ba8 net/appletalk: pu... |
1212 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1213 1214 1215 1216 1217 1218 1219 |
at->dest_port = addr->sat_port; at->dest_net = addr->sat_addr.s_net; at->dest_node = addr->sat_addr.s_node; sock->state = SS_CONNECTED; sk->sk_state = TCP_ESTABLISHED; |
ecced8ba8 net/appletalk: pu... |
1220 1221 |
err = 0; out: |
60d9f461a appletalk: remove... |
1222 |
release_sock(sk); |
ecced8ba8 net/appletalk: pu... |
1223 |
return err; |
1da177e4c Linux-2.6.12-rc2 |
1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 |
} /* * Find the name of an AppleTalk socket. Just copy the right * fields into the sockaddr. */ static int atalk_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len, int peer) { struct sockaddr_at sat; struct sock *sk = sock->sk; struct atalk_sock *at = at_sk(sk); |
ecced8ba8 net/appletalk: pu... |
1236 |
int err; |
1da177e4c Linux-2.6.12-rc2 |
1237 |
|
60d9f461a appletalk: remove... |
1238 |
lock_sock(sk); |
ecced8ba8 net/appletalk: pu... |
1239 |
err = -ENOBUFS; |
1da177e4c Linux-2.6.12-rc2 |
1240 1241 |
if (sock_flag(sk, SOCK_ZAPPED)) if (atalk_autobind(sk) < 0) |
ecced8ba8 net/appletalk: pu... |
1242 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1243 1244 |
*uaddr_len = sizeof(struct sockaddr_at); |
3d392475c appletalk: fix at... |
1245 |
memset(&sat.sat_zero, 0, sizeof(sat.sat_zero)); |
1da177e4c Linux-2.6.12-rc2 |
1246 1247 |
if (peer) { |
ecced8ba8 net/appletalk: pu... |
1248 |
err = -ENOTCONN; |
1da177e4c Linux-2.6.12-rc2 |
1249 |
if (sk->sk_state != TCP_ESTABLISHED) |
ecced8ba8 net/appletalk: pu... |
1250 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1251 1252 1253 1254 1255 1256 1257 1258 1259 |
sat.sat_addr.s_net = at->dest_net; sat.sat_addr.s_node = at->dest_node; sat.sat_port = at->dest_port; } else { sat.sat_addr.s_net = at->src_net; sat.sat_addr.s_node = at->src_node; sat.sat_port = at->src_port; } |
ecced8ba8 net/appletalk: pu... |
1260 |
err = 0; |
1da177e4c Linux-2.6.12-rc2 |
1261 1262 |
sat.sat_family = AF_APPLETALK; memcpy(uaddr, &sat, sizeof(sat)); |
ecced8ba8 net/appletalk: pu... |
1263 1264 |
out: |
60d9f461a appletalk: remove... |
1265 |
release_sock(sk); |
ecced8ba8 net/appletalk: pu... |
1266 |
return err; |
1da177e4c Linux-2.6.12-rc2 |
1267 1268 1269 1270 1271 |
} #if defined(CONFIG_IPDDP) || defined(CONFIG_IPDDP_MODULE) static __inline__ int is_ip_over_ddp(struct sk_buff *skb) { |
ed4477b96 [NET] APPLETALK: ... |
1272 |
return skb->data[12] == 22; |
1da177e4c Linux-2.6.12-rc2 |
1273 1274 1275 1276 |
} static int handle_ip_over_ddp(struct sk_buff *skb) { |
881d966b4 [NET]: Make the d... |
1277 |
struct net_device *dev = __dev_get_by_name(&init_net, "ipddp0"); |
1da177e4c Linux-2.6.12-rc2 |
1278 1279 1280 |
struct net_device_stats *stats; /* This needs to be able to handle ipddp"N" devices */ |
ffcfb8db5 Subject: [PATCH] ... |
1281 1282 1283 1284 |
if (!dev) { kfree_skb(skb); return NET_RX_DROP; } |
1da177e4c Linux-2.6.12-rc2 |
1285 |
|
ed4477b96 [NET] APPLETALK: ... |
1286 1287 1288 |
skb->protocol = htons(ETH_P_IP); skb_pull(skb, 13); skb->dev = dev; |
badff6d01 [SK_BUFF]: Introd... |
1289 |
skb_reset_transport_header(skb); |
1da177e4c Linux-2.6.12-rc2 |
1290 |
|
524ad0a79 netdevice: safe c... |
1291 |
stats = netdev_priv(dev); |
ed4477b96 [NET] APPLETALK: ... |
1292 1293 |
stats->rx_packets++; stats->rx_bytes += skb->len + 13; |
ffcfb8db5 Subject: [PATCH] ... |
1294 |
return netif_rx(skb); /* Send the SKB up to a higher place. */ |
1da177e4c Linux-2.6.12-rc2 |
1295 1296 1297 1298 1299 1300 |
} #else /* make it easy for gcc to optimize this test out, i.e. kill the code */ #define is_ip_over_ddp(skb) 0 #define handle_ip_over_ddp(skb) 0 #endif |
ffcfb8db5 Subject: [PATCH] ... |
1301 1302 |
static int atalk_route_packet(struct sk_buff *skb, struct net_device *dev, struct ddpehdr *ddp, __u16 len_hops, int origlen) |
1da177e4c Linux-2.6.12-rc2 |
1303 1304 1305 1306 1307 1308 |
{ struct atalk_route *rt; struct atalk_addr ta; /* * Don't route multicast, etc., packets, or packets sent to "this |
ed4477b96 [NET] APPLETALK: ... |
1309 |
* network" |
1da177e4c Linux-2.6.12-rc2 |
1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 |
*/ if (skb->pkt_type != PACKET_HOST || !ddp->deh_dnet) { /* * FIXME: * * Can it ever happen that a packet is from a PPP iface and * needs to be broadcast onto the default network? */ if (dev->type == ARPHRD_PPP) printk(KERN_DEBUG "AppleTalk: didn't forward broadcast " "packet received from PPP iface "); goto free_it; } ta.s_net = ddp->deh_dnet; ta.s_node = ddp->deh_dnode; /* Route the packet */ rt = atrtr_find(&ta); |
2a50f28c3 [ATALK]: endianne... |
1330 1331 1332 |
/* increment hops count */ len_hops += 1 << 10; if (!rt || !(len_hops & (15 << 10))) |
1da177e4c Linux-2.6.12-rc2 |
1333 |
goto free_it; |
2a50f28c3 [ATALK]: endianne... |
1334 |
|
1da177e4c Linux-2.6.12-rc2 |
1335 |
/* FIXME: use skb->cb to be able to use shared skbs */ |
1da177e4c Linux-2.6.12-rc2 |
1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 |
/* * Route goes through another gateway, so set the target to the * gateway instead. */ if (rt->flags & RTF_GATEWAY) { ta.s_net = rt->gateway.s_net; ta.s_node = rt->gateway.s_node; } |
ed4477b96 [NET] APPLETALK: ... |
1346 1347 |
/* Fix up skb->len field */ skb_trim(skb, min_t(unsigned int, origlen, |
1da177e4c Linux-2.6.12-rc2 |
1348 |
(rt->dev->hard_header_len + |
2a50f28c3 [ATALK]: endianne... |
1349 |
ddp_dl->header_length + (len_hops & 1023)))); |
1da177e4c Linux-2.6.12-rc2 |
1350 |
|
1da177e4c Linux-2.6.12-rc2 |
1351 |
/* FIXME: use skb->cb to be able to use shared skbs */ |
2a50f28c3 [ATALK]: endianne... |
1352 |
ddp->deh_len_hops = htons(len_hops); |
1da177e4c Linux-2.6.12-rc2 |
1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 |
/* * Send the buffer onwards * * Now we must always be careful. If it's come from LocalTalk to * EtherTalk it might not fit * * Order matters here: If a packet has to be copied to make a new * headroom (rare hopefully) then it won't need unsharing. * * Note. ddp-> becomes invalid at the realloc. */ if (skb_headroom(skb) < 22) { /* 22 bytes - 12 ether, 2 len, 3 802.2 5 snap */ struct sk_buff *nskb = skb_realloc_headroom(skb, 32); kfree_skb(skb); |
1da177e4c Linux-2.6.12-rc2 |
1369 1370 1371 |
skb = nskb; } else skb = skb_unshare(skb, GFP_ATOMIC); |
ed4477b96 [NET] APPLETALK: ... |
1372 |
|
1da177e4c Linux-2.6.12-rc2 |
1373 1374 1375 1376 |
/* * If the buffer didn't vanish into the lack of space bitbucket we can * send it. */ |
ffcfb8db5 Subject: [PATCH] ... |
1377 1378 1379 1380 1381 |
if (skb == NULL) goto drop; if (aarp_send_ddp(rt->dev, skb, &ta, NULL) == NET_XMIT_DROP) return NET_RX_DROP; |
8be8057e7 Have atalk_route_... |
1382 |
return NET_RX_SUCCESS; |
1da177e4c Linux-2.6.12-rc2 |
1383 1384 |
free_it: kfree_skb(skb); |
ffcfb8db5 Subject: [PATCH] ... |
1385 1386 |
drop: return NET_RX_DROP; |
1da177e4c Linux-2.6.12-rc2 |
1387 1388 1389 1390 1391 1392 1393 1394 1395 |
} /** * atalk_rcv - Receive a packet (in skb) from device dev * @skb - packet received * @dev - network device where the packet comes from * @pt - packet type * * Receive a packet (in skb) from device dev. This has come from the SNAP |
b0e380b1d [SK_BUFF]: unions... |
1396 1397 1398 1399 |
* decoder, and on entry skb->transport_header is the DDP header, skb->len * is the DDP header, skb->len is the DDP length. The physical headers * have been extracted. PPP should probably pass frames marked as for this * layer. [ie ARPHRD_ETHERTALK] |
1da177e4c Linux-2.6.12-rc2 |
1400 1401 |
*/ static int atalk_rcv(struct sk_buff *skb, struct net_device *dev, |
f2ccd8fa0 [NET]: Kill skb->... |
1402 |
struct packet_type *pt, struct net_device *orig_dev) |
1da177e4c Linux-2.6.12-rc2 |
1403 1404 1405 1406 1407 |
{ struct ddpehdr *ddp; struct sock *sock; struct atalk_iface *atif; struct sockaddr_at tosat; |
ed4477b96 [NET] APPLETALK: ... |
1408 |
int origlen; |
2a50f28c3 [ATALK]: endianne... |
1409 |
__u16 len_hops; |
1da177e4c Linux-2.6.12-rc2 |
1410 |
|
721499e89 netns: Use net_eq... |
1411 |
if (!net_eq(dev_net(dev), &init_net)) |
6885ffb3a Use correct NET_R... |
1412 |
goto drop; |
e730c1551 [NET]: Make packe... |
1413 |
|
1da177e4c Linux-2.6.12-rc2 |
1414 |
/* Don't mangle buffer if shared */ |
ed4477b96 [NET] APPLETALK: ... |
1415 |
if (!(skb = skb_share_check(skb, GFP_ATOMIC))) |
1da177e4c Linux-2.6.12-rc2 |
1416 |
goto out; |
ed4477b96 [NET] APPLETALK: ... |
1417 |
|
1da177e4c Linux-2.6.12-rc2 |
1418 1419 |
/* Size check and make sure header is contiguous */ if (!pskb_may_pull(skb, sizeof(*ddp))) |
6885ffb3a Use correct NET_R... |
1420 |
goto drop; |
1da177e4c Linux-2.6.12-rc2 |
1421 1422 |
ddp = ddp_hdr(skb); |
2a50f28c3 [ATALK]: endianne... |
1423 |
len_hops = ntohs(ddp->deh_len_hops); |
1da177e4c Linux-2.6.12-rc2 |
1424 1425 1426 |
/* Trim buffer in case of stray trailing data */ origlen = skb->len; |
2a50f28c3 [ATALK]: endianne... |
1427 |
skb_trim(skb, min_t(unsigned int, skb->len, len_hops & 1023)); |
1da177e4c Linux-2.6.12-rc2 |
1428 1429 1430 1431 |
/* * Size check to see if ddp->deh_len was crap * (Otherwise we'll detonate most spectacularly |
75559c167 [APPLETALK]: Fix ... |
1432 |
* in the middle of atalk_checksum() or recvmsg()). |
1da177e4c Linux-2.6.12-rc2 |
1433 |
*/ |
75559c167 [APPLETALK]: Fix ... |
1434 1435 1436 1437 |
if (skb->len < sizeof(*ddp) || skb->len < (len_hops & 1023)) { pr_debug("AppleTalk: dropping corrupted frame (deh_len=%u, " "skb->len=%u) ", len_hops & 1023, skb->len); |
6885ffb3a Use correct NET_R... |
1438 |
goto drop; |
75559c167 [APPLETALK]: Fix ... |
1439 |
} |
1da177e4c Linux-2.6.12-rc2 |
1440 1441 1442 1443 1444 1445 |
/* * Any checksums. Note we don't do htons() on this == is assumed to be * valid for net byte orders all over the networking code... */ if (ddp->deh_sum && |
2a50f28c3 [ATALK]: endianne... |
1446 |
atalk_checksum(skb, len_hops & 1023) != ddp->deh_sum) |
1da177e4c Linux-2.6.12-rc2 |
1447 |
/* Not a valid AppleTalk frame - dustbin time */ |
6885ffb3a Use correct NET_R... |
1448 |
goto drop; |
1da177e4c Linux-2.6.12-rc2 |
1449 1450 1451 1452 1453 1454 |
/* Check the packet is aimed at us */ if (!ddp->deh_dnet) /* Net 0 is 'this network' */ atif = atalk_find_anynet(ddp->deh_dnode, dev); else atif = atalk_find_interface(ddp->deh_dnet, ddp->deh_dnode); |
1da177e4c Linux-2.6.12-rc2 |
1455 |
if (!atif) { |
64233bffb [APPLETALK]: Fix ... |
1456 1457 1458 |
/* Not ours, so we route the packet via the correct * AppleTalk iface */ |
ffcfb8db5 Subject: [PATCH] ... |
1459 |
return atalk_route_packet(skb, dev, ddp, len_hops, origlen); |
1da177e4c Linux-2.6.12-rc2 |
1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 |
} /* if IP over DDP is not selected this code will be optimized out */ if (is_ip_over_ddp(skb)) return handle_ip_over_ddp(skb); /* * Which socket - atalk_search_socket() looks for a *full match* * of the <net, node, port> tuple. */ tosat.sat_addr.s_net = ddp->deh_dnet; tosat.sat_addr.s_node = ddp->deh_dnode; tosat.sat_port = ddp->deh_dport; sock = atalk_search_socket(&tosat, atif); if (!sock) /* But not one of our sockets */ |
6885ffb3a Use correct NET_R... |
1475 |
goto drop; |
1da177e4c Linux-2.6.12-rc2 |
1476 1477 1478 1479 1480 |
/* Queue packet (standard) */ skb->sk = sock; if (sock_queue_rcv_skb(sock, skb) < 0) |
6885ffb3a Use correct NET_R... |
1481 1482 1483 1484 1485 |
goto drop; return NET_RX_SUCCESS; drop: |
1da177e4c Linux-2.6.12-rc2 |
1486 |
kfree_skb(skb); |
6885ffb3a Use correct NET_R... |
1487 1488 |
out: return NET_RX_DROP; |
1da177e4c Linux-2.6.12-rc2 |
1489 1490 1491 1492 1493 1494 1495 1496 |
} /* * Receive a LocalTalk frame. We make some demands on the caller here. * Caller must provide enough headroom on the packet to pull the short * header and append a long one. */ static int ltalk_rcv(struct sk_buff *skb, struct net_device *dev, |
f2ccd8fa0 [NET]: Kill skb->... |
1497 |
struct packet_type *pt, struct net_device *orig_dev) |
1da177e4c Linux-2.6.12-rc2 |
1498 |
{ |
721499e89 netns: Use net_eq... |
1499 |
if (!net_eq(dev_net(dev), &init_net)) |
e730c1551 [NET]: Make packe... |
1500 |
goto freeit; |
1da177e4c Linux-2.6.12-rc2 |
1501 |
/* Expand any short form frames */ |
98e399f82 [SK_BUFF]: Introd... |
1502 |
if (skb_mac_header(skb)[2] == 1) { |
1da177e4c Linux-2.6.12-rc2 |
1503 1504 1505 |
struct ddpehdr *ddp; /* Find our address */ struct atalk_addr *ap = atalk_find_dev_addr(dev); |
2a50f28c3 [ATALK]: endianne... |
1506 |
if (!ap || skb->len < sizeof(__be16) || skb->len > 1023) |
1da177e4c Linux-2.6.12-rc2 |
1507 1508 1509 |
goto freeit; /* Don't mangle buffer if shared */ |
ed4477b96 [NET] APPLETALK: ... |
1510 |
if (!(skb = skb_share_check(skb, GFP_ATOMIC))) |
1da177e4c Linux-2.6.12-rc2 |
1511 1512 1513 1514 1515 1516 1517 1518 1519 |
return 0; /* * The push leaves us with a ddephdr not an shdr, and * handily the port bytes in the right place preset. */ ddp = (struct ddpehdr *) skb_push(skb, sizeof(*ddp) - 4); /* Now fill in the long header */ |
ed4477b96 [NET] APPLETALK: ... |
1520 1521 1522 1523 1524 |
/* * These two first. The mac overlays the new source/dest * network information so we MUST copy these before * we write the network numbers ! */ |
1da177e4c Linux-2.6.12-rc2 |
1525 |
|
98e399f82 [SK_BUFF]: Introd... |
1526 1527 |
ddp->deh_dnode = skb_mac_header(skb)[0]; /* From physical header */ ddp->deh_snode = skb_mac_header(skb)[1]; /* From physical header */ |
1da177e4c Linux-2.6.12-rc2 |
1528 1529 1530 1531 1532 1533 1534 |
ddp->deh_dnet = ap->s_net; /* Network number */ ddp->deh_snet = ap->s_net; ddp->deh_sum = 0; /* No checksum */ /* * Not sure about this bit... */ |
2a50f28c3 [ATALK]: endianne... |
1535 1536 |
/* Non routable, so force a drop if we slip up later */ ddp->deh_len_hops = htons(skb->len + (DDP_MAXHOPS << 10)); |
1da177e4c Linux-2.6.12-rc2 |
1537 |
} |
badff6d01 [SK_BUFF]: Introd... |
1538 |
skb_reset_transport_header(skb); |
1da177e4c Linux-2.6.12-rc2 |
1539 |
|
f2ccd8fa0 [NET]: Kill skb->... |
1540 |
return atalk_rcv(skb, dev, pt, orig_dev); |
1da177e4c Linux-2.6.12-rc2 |
1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 |
freeit: kfree_skb(skb); return 0; } static int atalk_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len) { struct sock *sk = sock->sk; struct atalk_sock *at = at_sk(sk); struct sockaddr_at *usat = (struct sockaddr_at *)msg->msg_name; int flags = msg->msg_flags; int loopback = 0; struct sockaddr_at local_satalk, gsat; struct sk_buff *skb; struct net_device *dev; struct ddpehdr *ddp; int size; struct atalk_route *rt; int err; if (flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT)) return -EINVAL; if (len > DDP_MAXSZ) return -EMSGSIZE; |
60d9f461a appletalk: remove... |
1567 |
lock_sock(sk); |
1da177e4c Linux-2.6.12-rc2 |
1568 |
if (usat) { |
ecced8ba8 net/appletalk: pu... |
1569 |
err = -EBUSY; |
1da177e4c Linux-2.6.12-rc2 |
1570 1571 |
if (sock_flag(sk, SOCK_ZAPPED)) if (atalk_autobind(sk) < 0) |
ecced8ba8 net/appletalk: pu... |
1572 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1573 |
|
ecced8ba8 net/appletalk: pu... |
1574 |
err = -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1575 1576 |
if (msg->msg_namelen < sizeof(*usat) || usat->sat_family != AF_APPLETALK) |
ecced8ba8 net/appletalk: pu... |
1577 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1578 |
|
ecced8ba8 net/appletalk: pu... |
1579 |
err = -EPERM; |
03ba99911 appletalk: this w... |
1580 |
/* netatalk didn't implement this check */ |
1da177e4c Linux-2.6.12-rc2 |
1581 1582 |
if (usat->sat_addr.s_node == ATADDR_BCAST && !sock_flag(sk, SOCK_BROADCAST)) { |
ecced8ba8 net/appletalk: pu... |
1583 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1584 1585 |
} } else { |
ecced8ba8 net/appletalk: pu... |
1586 |
err = -ENOTCONN; |
1da177e4c Linux-2.6.12-rc2 |
1587 |
if (sk->sk_state != TCP_ESTABLISHED) |
ecced8ba8 net/appletalk: pu... |
1588 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 |
usat = &local_satalk; usat->sat_family = AF_APPLETALK; usat->sat_port = at->dest_port; usat->sat_addr.s_node = at->dest_node; usat->sat_addr.s_net = at->dest_net; } /* Build a packet */ SOCK_DEBUG(sk, "SK %p: Got address. ", sk); /* For headers */ size = sizeof(struct ddpehdr) + len + ddp_dl->header_length; if (usat->sat_addr.s_net || usat->sat_addr.s_node == ATADDR_ANYNODE) { rt = atrtr_find(&usat->sat_addr); |
1da177e4c Linux-2.6.12-rc2 |
1605 1606 1607 1608 1609 1610 1611 |
} else { struct atalk_addr at_hint; at_hint.s_node = 0; at_hint.s_net = at->src_net; rt = atrtr_find(&at_hint); |
1da177e4c Linux-2.6.12-rc2 |
1612 |
} |
ecced8ba8 net/appletalk: pu... |
1613 |
err = ENETUNREACH; |
64233bffb [APPLETALK]: Fix ... |
1614 |
if (!rt) |
ecced8ba8 net/appletalk: pu... |
1615 |
goto out; |
64233bffb [APPLETALK]: Fix ... |
1616 1617 |
dev = rt->dev; |
1da177e4c Linux-2.6.12-rc2 |
1618 1619 1620 1621 1622 1623 |
SOCK_DEBUG(sk, "SK %p: Size needed %d, device %s ", sk, size, dev->name); size += dev->hard_header_len; |
60d9f461a appletalk: remove... |
1624 |
release_sock(sk); |
1da177e4c Linux-2.6.12-rc2 |
1625 |
skb = sock_alloc_send_skb(sk, size, (flags & MSG_DONTWAIT), &err); |
60d9f461a appletalk: remove... |
1626 |
lock_sock(sk); |
1da177e4c Linux-2.6.12-rc2 |
1627 |
if (!skb) |
ecced8ba8 net/appletalk: pu... |
1628 |
goto out; |
ed4477b96 [NET] APPLETALK: ... |
1629 |
|
1da177e4c Linux-2.6.12-rc2 |
1630 1631 1632 1633 1634 1635 1636 1637 1638 |
skb->sk = sk; skb_reserve(skb, ddp_dl->header_length); skb_reserve(skb, dev->hard_header_len); skb->dev = dev; SOCK_DEBUG(sk, "SK %p: Begin build. ", sk); ddp = (struct ddpehdr *)skb_put(skb, sizeof(struct ddpehdr)); |
2a50f28c3 [ATALK]: endianne... |
1639 |
ddp->deh_len_hops = htons(len + sizeof(*ddp)); |
1da177e4c Linux-2.6.12-rc2 |
1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 |
ddp->deh_dnet = usat->sat_addr.s_net; ddp->deh_snet = at->src_net; ddp->deh_dnode = usat->sat_addr.s_node; ddp->deh_snode = at->src_node; ddp->deh_dport = usat->sat_port; ddp->deh_sport = at->src_port; SOCK_DEBUG(sk, "SK %p: Copy user data (%Zd bytes). ", sk, len); err = memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len); if (err) { kfree_skb(skb); |
ecced8ba8 net/appletalk: pu... |
1653 1654 |
err = -EFAULT; goto out; |
1da177e4c Linux-2.6.12-rc2 |
1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 |
} if (sk->sk_no_check == 1) ddp->deh_sum = 0; else ddp->deh_sum = atalk_checksum(skb, len + sizeof(*ddp)); /* * Loopback broadcast packets to non gateway targets (ie routes * to group we are in) */ if (ddp->deh_dnode == ATADDR_BCAST && !(rt->flags & RTF_GATEWAY) && !(dev->flags & IFF_LOOPBACK)) { struct sk_buff *skb2 = skb_copy(skb, GFP_KERNEL); if (skb2) { loopback = 1; SOCK_DEBUG(sk, "SK %p: send out(copy). ", sk); |
ffcfb8db5 Subject: [PATCH] ... |
1674 1675 1676 1677 |
/* * If it fails it is queued/sent above in the aarp queue */ aarp_send_ddp(dev, skb2, &usat->sat_addr, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1678 1679 1680 1681 1682 1683 1684 1685 |
} } if (dev->flags & IFF_LOOPBACK || loopback) { SOCK_DEBUG(sk, "SK %p: Loop back. ", sk); /* loop back */ skb_orphan(skb); |
64233bffb [APPLETALK]: Fix ... |
1686 1687 1688 1689 1690 1691 1692 1693 1694 |
if (ddp->deh_dnode == ATADDR_BCAST) { struct atalk_addr at_lo; at_lo.s_node = 0; at_lo.s_net = 0; rt = atrtr_find(&at_lo); if (!rt) { kfree_skb(skb); |
ecced8ba8 net/appletalk: pu... |
1695 1696 |
err = -ENETUNREACH; goto out; |
64233bffb [APPLETALK]: Fix ... |
1697 1698 1699 1700 |
} dev = rt->dev; skb->dev = dev; } |
1da177e4c Linux-2.6.12-rc2 |
1701 1702 1703 1704 1705 1706 1707 1708 |
ddp_dl->request(ddp_dl, skb, dev->dev_addr); } else { SOCK_DEBUG(sk, "SK %p: send out. ", sk); if (rt->flags & RTF_GATEWAY) { gsat.sat_addr = rt->gateway; usat = &gsat; } |
ffcfb8db5 Subject: [PATCH] ... |
1709 1710 1711 1712 |
/* * If it fails it is queued/sent above in the aarp queue */ aarp_send_ddp(dev, skb, &usat->sat_addr, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1713 1714 1715 |
} SOCK_DEBUG(sk, "SK %p: Done write (%Zd). ", sk, len); |
ecced8ba8 net/appletalk: pu... |
1716 |
out: |
60d9f461a appletalk: remove... |
1717 |
release_sock(sk); |
ecced8ba8 net/appletalk: pu... |
1718 |
return err ? : len; |
1da177e4c Linux-2.6.12-rc2 |
1719 1720 1721 1722 1723 1724 1725 1726 1727 |
} static int atalk_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t size, int flags) { struct sock *sk = sock->sk; struct sockaddr_at *sat = (struct sockaddr_at *)msg->msg_name; struct ddpehdr *ddp; int copied = 0; |
2a50f28c3 [ATALK]: endianne... |
1728 |
int offset = 0; |
1da177e4c Linux-2.6.12-rc2 |
1729 |
int err = 0; |
ecced8ba8 net/appletalk: pu... |
1730 |
struct sk_buff *skb; |
ecced8ba8 net/appletalk: pu... |
1731 |
skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, |
1da177e4c Linux-2.6.12-rc2 |
1732 |
flags & MSG_DONTWAIT, &err); |
60d9f461a appletalk: remove... |
1733 |
lock_sock(sk); |
1da177e4c Linux-2.6.12-rc2 |
1734 |
if (!skb) |
ecced8ba8 net/appletalk: pu... |
1735 |
goto out; |
1da177e4c Linux-2.6.12-rc2 |
1736 1737 1738 |
/* FIXME: use skb->cb to be able to use shared skbs */ ddp = ddp_hdr(skb); |
2a50f28c3 [ATALK]: endianne... |
1739 |
copied = ntohs(ddp->deh_len_hops) & 1023; |
1da177e4c Linux-2.6.12-rc2 |
1740 |
|
2a50f28c3 [ATALK]: endianne... |
1741 1742 1743 1744 |
if (sk->sk_type != SOCK_RAW) { offset = sizeof(*ddp); copied -= offset; } |
1da177e4c Linux-2.6.12-rc2 |
1745 |
|
2a50f28c3 [ATALK]: endianne... |
1746 1747 1748 |
if (copied > size) { copied = size; msg->msg_flags |= MSG_TRUNC; |
1da177e4c Linux-2.6.12-rc2 |
1749 |
} |
2a50f28c3 [ATALK]: endianne... |
1750 |
err = skb_copy_datagram_iovec(skb, offset, msg->msg_iov, copied); |
1da177e4c Linux-2.6.12-rc2 |
1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 |
if (!err) { if (sat) { sat->sat_family = AF_APPLETALK; sat->sat_port = ddp->deh_sport; sat->sat_addr.s_node = ddp->deh_snode; sat->sat_addr.s_net = ddp->deh_snet; } msg->msg_namelen = sizeof(*sat); } skb_free_datagram(sk, skb); /* Free the datagram. */ |
ecced8ba8 net/appletalk: pu... |
1763 1764 |
out: |
60d9f461a appletalk: remove... |
1765 |
release_sock(sk); |
1da177e4c Linux-2.6.12-rc2 |
1766 1767 1768 1769 1770 1771 1772 1773 1774 |
return err ? : copied; } /* * AppleTalk ioctl calls. */ static int atalk_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { |
b5e5fa5e0 [NET]: Add a dev_... |
1775 |
int rc = -ENOIOCTLCMD; |
1da177e4c Linux-2.6.12-rc2 |
1776 1777 1778 1779 1780 1781 |
struct sock *sk = sock->sk; void __user *argp = (void __user *)arg; switch (cmd) { /* Protocol layer */ case TIOCOUTQ: { |
31e6d363a net: correct off-... |
1782 |
long amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); |
1da177e4c Linux-2.6.12-rc2 |
1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 |
if (amount < 0) amount = 0; rc = put_user(amount, (int __user *)argp); break; } case TIOCINQ: { /* * These two are safe on a single CPU system as only * user tasks fiddle here */ struct sk_buff *skb = skb_peek(&sk->sk_receive_queue); long amount = 0; if (skb) amount = skb->len - sizeof(struct ddpehdr); rc = put_user(amount, (int __user *)argp); break; } case SIOCGSTAMP: rc = sock_get_timestamp(sk, argp); break; |
ae40eb1ef [NET]: Introduce ... |
1805 1806 1807 |
case SIOCGSTAMPNS: rc = sock_get_timestampns(sk, argp); break; |
1da177e4c Linux-2.6.12-rc2 |
1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 |
/* Routing */ case SIOCADDRT: case SIOCDELRT: rc = -EPERM; if (capable(CAP_NET_ADMIN)) rc = atrtr_ioctl(cmd, argp); break; /* Interface */ case SIOCGIFADDR: case SIOCSIFADDR: case SIOCGIFBRDADDR: case SIOCATALKDIFADDR: case SIOCDIFADDR: case SIOCSARP: /* proxy AARP */ case SIOCDARP: /* proxy AARP */ rtnl_lock(); rc = atif_ioctl(cmd, argp); rtnl_unlock(); break; |
1da177e4c Linux-2.6.12-rc2 |
1827 1828 1829 1830 |
} return rc; } |
f6c90b71a [NET]: Fix ipx/ec... |
1831 1832 1833 1834 1835 |
#ifdef CONFIG_COMPAT static int atalk_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { /* |
206602217 appletalk: handle... |
1836 1837 1838 1839 |
* SIOCATALKDIFADDR is a SIOCPROTOPRIVATE ioctl number, so we * cannot handle it in common code. The data we access if ifreq * here is compatible, so we can simply call the native * handler. |
f6c90b71a [NET]: Fix ipx/ec... |
1840 |
*/ |
206602217 appletalk: handle... |
1841 1842 |
if (cmd == SIOCATALKDIFADDR) return atalk_ioctl(sock, cmd, (unsigned long)compat_ptr(arg)); |
f6c90b71a [NET]: Fix ipx/ec... |
1843 1844 1845 |
return -ENOIOCTLCMD; } #endif |
ec1b4cf74 net: mark net_pro... |
1846 |
static const struct net_proto_family atalk_family_ops = { |
1da177e4c Linux-2.6.12-rc2 |
1847 1848 1849 1850 |
.family = PF_APPLETALK, .create = atalk_create, .owner = THIS_MODULE, }; |
ecced8ba8 net/appletalk: pu... |
1851 |
static const struct proto_ops atalk_dgram_ops = { |
1da177e4c Linux-2.6.12-rc2 |
1852 1853 1854 1855 1856 1857 1858 1859 |
.family = PF_APPLETALK, .owner = THIS_MODULE, .release = atalk_release, .bind = atalk_bind, .connect = atalk_connect, .socketpair = sock_no_socketpair, .accept = sock_no_accept, .getname = atalk_getname, |
60d9f461a appletalk: remove... |
1860 |
.poll = datagram_poll, |
1da177e4c Linux-2.6.12-rc2 |
1861 |
.ioctl = atalk_ioctl, |
f6c90b71a [NET]: Fix ipx/ec... |
1862 1863 1864 |
#ifdef CONFIG_COMPAT .compat_ioctl = atalk_compat_ioctl, #endif |
1da177e4c Linux-2.6.12-rc2 |
1865 1866 1867 1868 1869 1870 1871 1872 1873 |
.listen = sock_no_listen, .shutdown = sock_no_shutdown, .setsockopt = sock_no_setsockopt, .getsockopt = sock_no_getsockopt, .sendmsg = atalk_sendmsg, .recvmsg = atalk_recvmsg, .mmap = sock_no_mmap, .sendpage = sock_no_sendpage, }; |
1da177e4c Linux-2.6.12-rc2 |
1874 1875 1876 |
static struct notifier_block ddp_notifier = { .notifier_call = ddp_device_event, }; |
7546dd97d net: convert usag... |
1877 |
static struct packet_type ltalk_packet_type __read_mostly = { |
09640e636 net: replace uses... |
1878 |
.type = cpu_to_be16(ETH_P_LOCALTALK), |
1da177e4c Linux-2.6.12-rc2 |
1879 1880 |
.func = ltalk_rcv, }; |
7546dd97d net: convert usag... |
1881 |
static struct packet_type ppptalk_packet_type __read_mostly = { |
09640e636 net: replace uses... |
1882 |
.type = cpu_to_be16(ETH_P_PPPTALK), |
1da177e4c Linux-2.6.12-rc2 |
1883 1884 1885 1886 1887 1888 |
.func = atalk_rcv, }; static unsigned char ddp_snap_id[] = { 0x08, 0x00, 0x07, 0x80, 0x9B }; /* Export symbols for use by drivers when AppleTalk is a module */ |
1da177e4c Linux-2.6.12-rc2 |
1889 1890 |
EXPORT_SYMBOL(atrtr_get_dev); EXPORT_SYMBOL(atalk_find_dev_addr); |
2db096086 appletalk: fix wa... |
1891 |
static const char atalk_err_snap[] __initconst = |
1da177e4c Linux-2.6.12-rc2 |
1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 |
KERN_CRIT "Unable to register DDP with SNAP. "; /* Called by proto.c on kernel start up */ static int __init atalk_init(void) { int rc = proto_register(&ddp_proto, 0); if (rc != 0) goto out; (void)sock_register(&atalk_family_ops); ddp_dl = register_snap_client(ddp_snap_id, atalk_rcv); if (!ddp_dl) printk(atalk_err_snap); dev_add_pack(<alk_packet_type); dev_add_pack(&ppptalk_packet_type); register_netdevice_notifier(&ddp_notifier); aarp_proto_init(); atalk_proc_init(); atalk_register_sysctl(); out: return rc; } module_init(atalk_init); /* * No explicit module reference count manipulation is needed in the * protocol. Socket layer sets module reference count for us * and interfaces reference counting is done * by the network device layer. * * Ergo, before the AppleTalk module can be removed, all AppleTalk * sockets be closed from user space. */ static void __exit atalk_exit(void) { #ifdef CONFIG_SYSCTL atalk_unregister_sysctl(); #endif /* CONFIG_SYSCTL */ atalk_proc_exit(); aarp_cleanup_module(); /* General aarp clean-up. */ unregister_netdevice_notifier(&ddp_notifier); dev_remove_pack(<alk_packet_type); dev_remove_pack(&ppptalk_packet_type); unregister_snap_client(ddp_dl); sock_unregister(PF_APPLETALK); proto_unregister(&ddp_proto); } module_exit(atalk_exit); MODULE_LICENSE("GPL"); |
113aa838e net: Rationalise ... |
1946 |
MODULE_AUTHOR("Alan Cox <alan@lxorguk.ukuu.org.uk>"); |
1da177e4c Linux-2.6.12-rc2 |
1947 1948 1949 |
MODULE_DESCRIPTION("AppleTalk 0.20 "); MODULE_ALIAS_NETPROTO(PF_APPLETALK); |