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net/decnet/af_decnet.c
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/* * 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 Socket Layer Interface * * Authors: Eduardo Marcelo Serrat <emserrat@geocities.com> * Patrick Caulfield <patrick@pandh.demon.co.uk> * * Changes: * Steve Whitehouse: Copied from Eduardo Serrat and Patrick Caulfield's * version of the code. Original copyright preserved * below. * Steve Whitehouse: Some bug fixes, cleaning up some code to make it * compatible with my routing layer. * Steve Whitehouse: Merging changes from Eduardo Serrat and Patrick * Caulfield. * Steve Whitehouse: Further bug fixes, checking module code still works * with new routing layer. * Steve Whitehouse: Additional set/get_sockopt() calls. * Steve Whitehouse: Fixed TIOCINQ ioctl to be same as Eduardo's new * code. * Steve Whitehouse: recvmsg() changed to try and behave in a POSIX like * way. Didn't manage it entirely, but its better. * Steve Whitehouse: ditto for sendmsg(). * Steve Whitehouse: A selection of bug fixes to various things. * Steve Whitehouse: Added TIOCOUTQ ioctl. * Steve Whitehouse: Fixes to username2sockaddr & sockaddr2username. * Steve Whitehouse: Fixes to connect() error returns. * Patrick Caulfield: Fixes to delayed acceptance logic. * David S. Miller: New socket locking * Steve Whitehouse: Socket list hashing/locking * Arnaldo C. Melo: use capable, not suser * Steve Whitehouse: Removed unused code. Fix to use sk->allocation * when required. * Patrick Caulfield: /proc/net/decnet now has object name/number * Steve Whitehouse: Fixed local port allocation, hashed sk list * Matthew Wilcox: Fixes for dn_ioctl() * Steve Whitehouse: New connect/accept logic to allow timeouts and * prepare for sendpage etc. */ /****************************************************************************** (c) 1995-1998 E.M. Serrat emserrat@geocities.com |
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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 any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. HISTORY: Version Kernel Date Author/Comments ------- ------ ---- --------------- Version 0.0.1 2.0.30 01-dic-97 Eduardo Marcelo Serrat (emserrat@geocities.com) |
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First Development of DECnet Socket La- |
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yer for Linux. Only supports outgoing connections. Version 0.0.2 2.1.105 20-jun-98 Patrick J. Caulfield (patrick@pandh.demon.co.uk) Port to new kernel development version. Version 0.0.3 2.1.106 25-jun-98 Eduardo Marcelo Serrat (emserrat@geocities.com) _ |
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Added support for incoming connections so we can start developing server apps on Linux. |
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- Module Support Version 0.0.4 2.1.109 21-jul-98 Eduardo Marcelo Serrat |
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(emserrat@geocities.com) _ Added support for X11R6.4. Now we can use DECnet transport for X on Linux!!! - |
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Version 0.0.5 2.1.110 01-aug-98 Eduardo Marcelo Serrat |
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(emserrat@geocities.com) Removed bugs on flow control Removed bugs on incoming accessdata order - |
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Version 0.0.6 2.1.110 07-aug-98 Eduardo Marcelo Serrat |
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dn_recvmsg fixes |
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Patrick J. Caulfield dn_bind fixes |
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*******************************************************************************/ |
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#include <linux/module.h> #include <linux/errno.h> #include <linux/types.h> #include <linux/slab.h> #include <linux/socket.h> #include <linux/in.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/timer.h> #include <linux/string.h> #include <linux/sockios.h> #include <linux/net.h> #include <linux/netdevice.h> #include <linux/inet.h> #include <linux/route.h> #include <linux/netfilter.h> #include <linux/seq_file.h> #include <net/sock.h> |
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#include <net/tcp_states.h> |
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#include <net/flow.h> #include <asm/system.h> #include <asm/ioctls.h> |
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#include <linux/capability.h> |
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#include <linux/mm.h> #include <linux/interrupt.h> #include <linux/proc_fs.h> #include <linux/stat.h> #include <linux/init.h> #include <linux/poll.h> |
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#include <net/net_namespace.h> |
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#include <net/neighbour.h> #include <net/dst.h> |
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#include <net/fib_rules.h> |
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#include <net/dn.h> #include <net/dn_nsp.h> #include <net/dn_dev.h> #include <net/dn_route.h> #include <net/dn_fib.h> #include <net/dn_neigh.h> struct dn_sock { struct sock sk; struct dn_scp scp; }; static void dn_keepalive(struct sock *sk); #define DN_SK_HASH_SHIFT 8 #define DN_SK_HASH_SIZE (1 << DN_SK_HASH_SHIFT) #define DN_SK_HASH_MASK (DN_SK_HASH_SIZE - 1) |
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static const struct proto_ops dn_proto_ops; |
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static DEFINE_RWLOCK(dn_hash_lock); static struct hlist_head dn_sk_hash[DN_SK_HASH_SIZE]; static struct hlist_head dn_wild_sk; |
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static atomic_long_t decnet_memory_allocated; |
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static int __dn_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen, int flags); |
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static int __dn_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen, int flags); static struct hlist_head *dn_find_list(struct sock *sk) { struct dn_scp *scp = DN_SK(sk); if (scp->addr.sdn_flags & SDF_WILD) return hlist_empty(&dn_wild_sk) ? &dn_wild_sk : NULL; |
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return &dn_sk_hash[le16_to_cpu(scp->addrloc) & DN_SK_HASH_MASK]; |
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} |
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/* |
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* Valid ports are those greater than zero and not already in use. */ |
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static int check_port(__le16 port) |
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{ struct sock *sk; struct hlist_node *node; if (port == 0) return -1; |
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sk_for_each(sk, node, &dn_sk_hash[le16_to_cpu(port) & DN_SK_HASH_MASK]) { |
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struct dn_scp *scp = DN_SK(sk); if (scp->addrloc == port) return -1; } return 0; } static unsigned short port_alloc(struct sock *sk) { struct dn_scp *scp = DN_SK(sk); static unsigned short port = 0x2000; unsigned short i_port = port; |
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while(check_port(cpu_to_le16(++port)) != 0) { |
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if (port == i_port) return 0; } |
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scp->addrloc = cpu_to_le16(port); |
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return 1; } /* * Since this is only ever called from user * level, we don't need a write_lock() version * of this. */ static int dn_hash_sock(struct sock *sk) { struct dn_scp *scp = DN_SK(sk); struct hlist_head *list; int rv = -EUSERS; BUG_ON(sk_hashed(sk)); write_lock_bh(&dn_hash_lock); |
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if (!scp->addrloc && !port_alloc(sk)) goto out; rv = -EADDRINUSE; if ((list = dn_find_list(sk)) == NULL) goto out; sk_add_node(sk, list); rv = 0; out: write_unlock_bh(&dn_hash_lock); return rv; } static void dn_unhash_sock(struct sock *sk) { write_lock(&dn_hash_lock); sk_del_node_init(sk); write_unlock(&dn_hash_lock); } static void dn_unhash_sock_bh(struct sock *sk) { write_lock_bh(&dn_hash_lock); sk_del_node_init(sk); write_unlock_bh(&dn_hash_lock); } static struct hlist_head *listen_hash(struct sockaddr_dn *addr) { int i; unsigned hash = addr->sdn_objnum; if (hash == 0) { hash = addr->sdn_objnamel; |
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for(i = 0; i < le16_to_cpu(addr->sdn_objnamel); i++) { |
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hash ^= addr->sdn_objname[i]; hash ^= (hash << 3); } } return &dn_sk_hash[hash & DN_SK_HASH_MASK]; } /* * Called to transform a socket from bound (i.e. with a local address) * into a listening socket (doesn't need a local port number) and rehashes * based upon the object name/number. */ static void dn_rehash_sock(struct sock *sk) { struct hlist_head *list; struct dn_scp *scp = DN_SK(sk); if (scp->addr.sdn_flags & SDF_WILD) return; write_lock_bh(&dn_hash_lock); sk_del_node_init(sk); DN_SK(sk)->addrloc = 0; list = listen_hash(&DN_SK(sk)->addr); sk_add_node(sk, list); write_unlock_bh(&dn_hash_lock); } int dn_sockaddr2username(struct sockaddr_dn *sdn, unsigned char *buf, unsigned char type) { int len = 2; *buf++ = type; |
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switch (type) { case 0: *buf++ = sdn->sdn_objnum; break; case 1: *buf++ = 0; *buf++ = le16_to_cpu(sdn->sdn_objnamel); memcpy(buf, sdn->sdn_objname, le16_to_cpu(sdn->sdn_objnamel)); len = 3 + le16_to_cpu(sdn->sdn_objnamel); break; case 2: memset(buf, 0, 5); buf += 5; *buf++ = le16_to_cpu(sdn->sdn_objnamel); memcpy(buf, sdn->sdn_objname, le16_to_cpu(sdn->sdn_objnamel)); len = 7 + le16_to_cpu(sdn->sdn_objnamel); break; |
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} return len; } /* * On reception of usernames, we handle types 1 and 0 for destination * addresses only. Types 2 and 4 are used for source addresses, but the * UIC, GIC are ignored and they are both treated the same way. Type 3 * is never used as I've no idea what its purpose might be or what its * format is. */ int dn_username2sockaddr(unsigned char *data, int len, struct sockaddr_dn *sdn, unsigned char *fmt) { unsigned char type; int size = len; int namel = 12; sdn->sdn_objnum = 0; |
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sdn->sdn_objnamel = cpu_to_le16(0); |
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memset(sdn->sdn_objname, 0, DN_MAXOBJL); if (len < 2) return -1; len -= 2; *fmt = *data++; type = *data++; |
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switch (*fmt) { case 0: sdn->sdn_objnum = type; return 2; case 1: namel = 16; break; case 2: len -= 4; data += 4; break; case 4: len -= 8; data += 8; break; default: return -1; |
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} len -= 1; if (len < 0) return -1; |
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sdn->sdn_objnamel = cpu_to_le16(*data++); len -= le16_to_cpu(sdn->sdn_objnamel); |
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if ((len < 0) || (le16_to_cpu(sdn->sdn_objnamel) > namel)) |
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return -1; |
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memcpy(sdn->sdn_objname, data, le16_to_cpu(sdn->sdn_objnamel)); |
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return size - len; } struct sock *dn_sklist_find_listener(struct sockaddr_dn *addr) { struct hlist_head *list = listen_hash(addr); struct hlist_node *node; struct sock *sk; read_lock(&dn_hash_lock); sk_for_each(sk, node, list) { struct dn_scp *scp = DN_SK(sk); if (sk->sk_state != TCP_LISTEN) continue; if (scp->addr.sdn_objnum) { if (scp->addr.sdn_objnum != addr->sdn_objnum) continue; } else { if (addr->sdn_objnum) continue; if (scp->addr.sdn_objnamel != addr->sdn_objnamel) continue; |
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if (memcmp(scp->addr.sdn_objname, addr->sdn_objname, le16_to_cpu(addr->sdn_objnamel)) != 0) |
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continue; } sock_hold(sk); read_unlock(&dn_hash_lock); return sk; } sk = sk_head(&dn_wild_sk); if (sk) { |
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if (sk->sk_state == TCP_LISTEN) |
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sock_hold(sk); else sk = NULL; } read_unlock(&dn_hash_lock); return sk; } struct sock *dn_find_by_skb(struct sk_buff *skb) { struct dn_skb_cb *cb = DN_SKB_CB(skb); struct sock *sk; struct hlist_node *node; struct dn_scp *scp; read_lock(&dn_hash_lock); |
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sk_for_each(sk, node, &dn_sk_hash[le16_to_cpu(cb->dst_port) & DN_SK_HASH_MASK]) { |
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scp = DN_SK(sk); if (cb->src != dn_saddr2dn(&scp->peer)) continue; if (cb->dst_port != scp->addrloc) continue; if (scp->addrrem && (cb->src_port != scp->addrrem)) continue; sock_hold(sk); goto found; } sk = NULL; found: read_unlock(&dn_hash_lock); return sk; } static void dn_destruct(struct sock *sk) { struct dn_scp *scp = DN_SK(sk); skb_queue_purge(&scp->data_xmit_queue); skb_queue_purge(&scp->other_xmit_queue); skb_queue_purge(&scp->other_receive_queue); |
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dst_release(rcu_dereference_check(sk->sk_dst_cache, 1)); |
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} |
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static int dn_memory_pressure; |
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static void dn_enter_memory_pressure(struct sock *sk) |
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{ if (!dn_memory_pressure) { dn_memory_pressure = 1; } } |
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static struct proto dn_proto = { |
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.name = "NSP", .owner = THIS_MODULE, .enter_memory_pressure = dn_enter_memory_pressure, .memory_pressure = &dn_memory_pressure, .memory_allocated = &decnet_memory_allocated, .sysctl_mem = sysctl_decnet_mem, .sysctl_wmem = sysctl_decnet_wmem, .sysctl_rmem = sysctl_decnet_rmem, .max_header = DN_MAX_NSP_DATA_HEADER + 64, .obj_size = sizeof(struct dn_sock), |
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}; |
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static struct sock *dn_alloc_sock(struct net *net, struct socket *sock, gfp_t gfp) |
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{ struct dn_scp *scp; |
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struct sock *sk = sk_alloc(net, PF_DECnet, gfp, &dn_proto); |
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if (!sk) goto out; if (sock) sock->ops = &dn_proto_ops; sock_init_data(sock, sk); sk->sk_backlog_rcv = dn_nsp_backlog_rcv; sk->sk_destruct = dn_destruct; sk->sk_no_check = 1; sk->sk_family = PF_DECnet; sk->sk_protocol = 0; sk->sk_allocation = gfp; |
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sk->sk_sndbuf = sysctl_decnet_wmem[1]; sk->sk_rcvbuf = sysctl_decnet_rmem[1]; |
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/* Initialization of DECnet Session Control Port */ scp = DN_SK(sk); scp->state = DN_O; /* Open */ scp->numdat = 1; /* Next data seg to tx */ scp->numoth = 1; /* Next oth data to tx */ scp->ackxmt_dat = 0; /* Last data seg ack'ed */ scp->ackxmt_oth = 0; /* Last oth data ack'ed */ scp->ackrcv_dat = 0; /* Highest data ack recv*/ scp->ackrcv_oth = 0; /* Last oth data ack rec*/ |
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scp->flowrem_sw = DN_SEND; |
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scp->flowloc_sw = DN_SEND; scp->flowrem_dat = 0; scp->flowrem_oth = 1; scp->flowloc_dat = 0; scp->flowloc_oth = 1; scp->services_rem = 0; scp->services_loc = 1 | NSP_FC_NONE; scp->info_rem = 0; scp->info_loc = 0x03; /* NSP version 4.1 */ scp->segsize_rem = 230 - DN_MAX_NSP_DATA_HEADER; /* Default: Updated by remote segsize */ scp->nonagle = 0; scp->multi_ireq = 1; scp->accept_mode = ACC_IMMED; scp->addr.sdn_family = AF_DECnet; scp->peer.sdn_family = AF_DECnet; scp->accessdata.acc_accl = 5; memcpy(scp->accessdata.acc_acc, "LINUX", 5); scp->max_window = NSP_MAX_WINDOW; scp->snd_window = NSP_MIN_WINDOW; scp->nsp_srtt = NSP_INITIAL_SRTT; scp->nsp_rttvar = NSP_INITIAL_RTTVAR; scp->nsp_rxtshift = 0; skb_queue_head_init(&scp->data_xmit_queue); skb_queue_head_init(&scp->other_xmit_queue); skb_queue_head_init(&scp->other_receive_queue); scp->persist = 0; scp->persist_fxn = NULL; scp->keepalive = 10 * HZ; scp->keepalive_fxn = dn_keepalive; init_timer(&scp->delack_timer); scp->delack_pending = 0; scp->delack_fxn = dn_nsp_delayed_ack; dn_start_slow_timer(sk); out: return sk; } /* * Keepalive timer. * FIXME: Should respond to SO_KEEPALIVE etc. */ static void dn_keepalive(struct sock *sk) { struct dn_scp *scp = DN_SK(sk); /* * By checking the other_data transmit queue is empty * we are double checking that we are not sending too * many of these keepalive frames. */ |
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if (skb_queue_empty(&scp->other_xmit_queue)) |
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dn_nsp_send_link(sk, DN_NOCHANGE, 0); } /* * Timer for shutdown/destroyed sockets. * When socket is dead & no packets have been sent for a * certain amount of time, they are removed by this * routine. Also takes care of sending out DI & DC * frames at correct times. */ int dn_destroy_timer(struct sock *sk) { struct dn_scp *scp = DN_SK(sk); scp->persist = dn_nsp_persist(sk); |
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switch (scp->state) { case DN_DI: dn_nsp_send_disc(sk, NSP_DISCINIT, 0, GFP_ATOMIC); if (scp->nsp_rxtshift >= decnet_di_count) scp->state = DN_CN; return 0; |
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case DN_DR: dn_nsp_send_disc(sk, NSP_DISCINIT, 0, GFP_ATOMIC); if (scp->nsp_rxtshift >= decnet_dr_count) scp->state = DN_DRC; return 0; |
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case DN_DN: if (scp->nsp_rxtshift < decnet_dn_count) { /* printk(KERN_DEBUG "dn_destroy_timer: DN "); */ dn_nsp_send_disc(sk, NSP_DISCCONF, NSP_REASON_DC, GFP_ATOMIC); return 0; } |
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} scp->persist = (HZ * decnet_time_wait); if (sk->sk_socket) return 0; if ((jiffies - scp->stamp) >= (HZ * decnet_time_wait)) { dn_unhash_sock(sk); sock_put(sk); return 1; } return 0; } static void dn_destroy_sock(struct sock *sk) { struct dn_scp *scp = DN_SK(sk); scp->nsp_rxtshift = 0; /* reset back off */ if (sk->sk_socket) { if (sk->sk_socket->state != SS_UNCONNECTED) sk->sk_socket->state = SS_DISCONNECTING; } sk->sk_state = TCP_CLOSE; |
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switch (scp->state) { case DN_DN: dn_nsp_send_disc(sk, NSP_DISCCONF, NSP_REASON_DC, sk->sk_allocation); scp->persist_fxn = dn_destroy_timer; scp->persist = dn_nsp_persist(sk); break; case DN_CR: scp->state = DN_DR; goto disc_reject; case DN_RUN: scp->state = DN_DI; case DN_DI: case DN_DR: |
1da177e4c Linux-2.6.12-rc2 |
622 |
disc_reject: |
06f8fe11b decnet: Reduce sw... |
623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 |
dn_nsp_send_disc(sk, NSP_DISCINIT, 0, sk->sk_allocation); case DN_NC: case DN_NR: case DN_RJ: case DN_DIC: case DN_CN: case DN_DRC: case DN_CI: case DN_CD: scp->persist_fxn = dn_destroy_timer; scp->persist = dn_nsp_persist(sk); break; default: printk(KERN_DEBUG "DECnet: dn_destroy_sock passed socket in invalid state "); case DN_O: dn_stop_slow_timer(sk); |
1da177e4c Linux-2.6.12-rc2 |
640 |
|
06f8fe11b decnet: Reduce sw... |
641 642 |
dn_unhash_sock_bh(sk); sock_put(sk); |
1da177e4c Linux-2.6.12-rc2 |
643 |
|
06f8fe11b decnet: Reduce sw... |
644 |
break; |
1da177e4c Linux-2.6.12-rc2 |
645 646 |
} } |
c4ea94ab3 [DECnet]: Endian ... |
647 |
char *dn_addr2asc(__u16 addr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
648 649 650 651 652 653 654 655 656 |
{ unsigned short node, area; node = addr & 0x03ff; area = addr >> 10; sprintf(buf, "%hd.%hd", area, node); return buf; } |
3f378b684 net: pass kern to... |
657 658 |
static int dn_create(struct net *net, struct socket *sock, int protocol, int kern) |
1da177e4c Linux-2.6.12-rc2 |
659 660 |
{ struct sock *sk; |
09ad9bc75 net: use net_eq t... |
661 |
if (!net_eq(net, &init_net)) |
1b8d7ae42 [NET]: Make socke... |
662 |
return -EAFNOSUPPORT; |
06f8fe11b decnet: Reduce sw... |
663 664 665 666 667 668 669 670 671 |
switch (sock->type) { case SOCK_SEQPACKET: if (protocol != DNPROTO_NSP) return -EPROTONOSUPPORT; break; case SOCK_STREAM: break; default: return -ESOCKTNOSUPPORT; |
1da177e4c Linux-2.6.12-rc2 |
672 |
} |
1b8d7ae42 [NET]: Make socke... |
673 |
if ((sk = dn_alloc_sock(net, sock, GFP_KERNEL)) == NULL) |
1da177e4c Linux-2.6.12-rc2 |
674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 |
return -ENOBUFS; sk->sk_protocol = protocol; return 0; } static int dn_release(struct socket *sock) { struct sock *sk = sock->sk; if (sk) { sock_orphan(sk); sock_hold(sk); lock_sock(sk); dn_destroy_sock(sk); release_sock(sk); sock_put(sk); } |
429eb0fae [NET] DECNET: Fix... |
695 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
696 697 698 699 700 701 702 |
} static int dn_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) { struct sock *sk = sock->sk; struct dn_scp *scp = DN_SK(sk); struct sockaddr_dn *saddr = (struct sockaddr_dn *)uaddr; |
7562f876c [NET]: Rework dev... |
703 |
struct net_device *dev, *ldev; |
1da177e4c Linux-2.6.12-rc2 |
704 705 706 707 708 709 710 |
int rv; if (addr_len != sizeof(struct sockaddr_dn)) return -EINVAL; if (saddr->sdn_family != AF_DECnet) return -EINVAL; |
c4106aa88 decnet: remove pr... |
711 |
if (le16_to_cpu(saddr->sdn_nodeaddrl) && (le16_to_cpu(saddr->sdn_nodeaddrl) != 2)) |
1da177e4c Linux-2.6.12-rc2 |
712 |
return -EINVAL; |
c4106aa88 decnet: remove pr... |
713 |
if (le16_to_cpu(saddr->sdn_objnamel) > DN_MAXOBJL) |
1da177e4c Linux-2.6.12-rc2 |
714 715 716 717 |
return -EINVAL; if (saddr->sdn_flags & ~SDF_WILD) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
718 719 720 |
if (!capable(CAP_NET_BIND_SERVICE) && (saddr->sdn_objnum || (saddr->sdn_flags & SDF_WILD))) return -EACCES; |
1da177e4c Linux-2.6.12-rc2 |
721 722 |
if (!(saddr->sdn_flags & SDF_WILD)) { |
c4106aa88 decnet: remove pr... |
723 |
if (le16_to_cpu(saddr->sdn_nodeaddrl)) { |
c6d14c845 net: Introduce fo... |
724 |
rcu_read_lock(); |
7562f876c [NET]: Rework dev... |
725 |
ldev = NULL; |
c6d14c845 net: Introduce fo... |
726 |
for_each_netdev_rcu(&init_net, dev) { |
1da177e4c Linux-2.6.12-rc2 |
727 728 |
if (!dev->dn_ptr) continue; |
7562f876c [NET]: Rework dev... |
729 730 |
if (dn_dev_islocal(dev, dn_saddr2dn(saddr))) { ldev = dev; |
1da177e4c Linux-2.6.12-rc2 |
731 |
break; |
7562f876c [NET]: Rework dev... |
732 |
} |
1da177e4c Linux-2.6.12-rc2 |
733 |
} |
c6d14c845 net: Introduce fo... |
734 |
rcu_read_unlock(); |
7562f876c [NET]: Rework dev... |
735 |
if (ldev == NULL) |
1da177e4c Linux-2.6.12-rc2 |
736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 |
return -EADDRNOTAVAIL; } } rv = -EINVAL; lock_sock(sk); if (sock_flag(sk, SOCK_ZAPPED)) { memcpy(&scp->addr, saddr, addr_len); sock_reset_flag(sk, SOCK_ZAPPED); rv = dn_hash_sock(sk); if (rv) sock_set_flag(sk, SOCK_ZAPPED); } release_sock(sk); |
429eb0fae [NET] DECNET: Fix... |
751 |
return rv; |
1da177e4c Linux-2.6.12-rc2 |
752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 |
} static int dn_auto_bind(struct socket *sock) { struct sock *sk = sock->sk; struct dn_scp *scp = DN_SK(sk); int rv; sock_reset_flag(sk, SOCK_ZAPPED); scp->addr.sdn_flags = 0; scp->addr.sdn_objnum = 0; /* * This stuff is to keep compatibility with Eduardo's * patch. I hope I can dispense with it shortly... */ if ((scp->accessdata.acc_accl != 0) && (scp->accessdata.acc_accl <= 12)) { |
429eb0fae [NET] DECNET: Fix... |
772 |
|
c4106aa88 decnet: remove pr... |
773 774 |
scp->addr.sdn_objnamel = cpu_to_le16(scp->accessdata.acc_accl); memcpy(scp->addr.sdn_objname, scp->accessdata.acc_acc, le16_to_cpu(scp->addr.sdn_objnamel)); |
1da177e4c Linux-2.6.12-rc2 |
775 776 777 778 779 |
scp->accessdata.acc_accl = 0; memset(scp->accessdata.acc_acc, 0, 40); } /* End of compatibility stuff */ |
c4106aa88 decnet: remove pr... |
780 |
scp->addr.sdn_add.a_len = cpu_to_le16(2); |
c4ea94ab3 [DECnet]: Endian ... |
781 |
rv = dn_dev_bind_default((__le16 *)scp->addr.sdn_add.a_addr); |
1da177e4c Linux-2.6.12-rc2 |
782 783 784 785 786 787 788 789 |
if (rv == 0) { rv = dn_hash_sock(sk); if (rv) sock_set_flag(sk, SOCK_ZAPPED); } return rv; } |
dd0fc66fb [PATCH] gfp flags... |
790 |
static int dn_confirm_accept(struct sock *sk, long *timeo, gfp_t allocation) |
1da177e4c Linux-2.6.12-rc2 |
791 792 793 794 795 796 797 798 799 |
{ struct dn_scp *scp = DN_SK(sk); DEFINE_WAIT(wait); int err; if (scp->state != DN_CR) return -EINVAL; scp->state = DN_CC; |
0dbaee3b3 net: Abstract def... |
800 |
scp->segsize_loc = dst_metric_advmss(__sk_dst_get(sk)); |
1da177e4c Linux-2.6.12-rc2 |
801 |
dn_send_conn_conf(sk, allocation); |
aa3951451 net: sk_sleep() h... |
802 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4c Linux-2.6.12-rc2 |
803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 |
for(;;) { release_sock(sk); if (scp->state == DN_CC) *timeo = schedule_timeout(*timeo); lock_sock(sk); err = 0; if (scp->state == DN_RUN) break; err = sock_error(sk); if (err) break; err = sock_intr_errno(*timeo); if (signal_pending(current)) break; err = -EAGAIN; if (!*timeo) break; |
aa3951451 net: sk_sleep() h... |
820 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4c Linux-2.6.12-rc2 |
821 |
} |
aa3951451 net: sk_sleep() h... |
822 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c Linux-2.6.12-rc2 |
823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 |
if (err == 0) { sk->sk_socket->state = SS_CONNECTED; } else if (scp->state != DN_CC) { sk->sk_socket->state = SS_UNCONNECTED; } return err; } static int dn_wait_run(struct sock *sk, long *timeo) { struct dn_scp *scp = DN_SK(sk); DEFINE_WAIT(wait); int err = 0; if (scp->state == DN_RUN) goto out; if (!*timeo) return -EALREADY; |
aa3951451 net: sk_sleep() h... |
842 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4c Linux-2.6.12-rc2 |
843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 |
for(;;) { release_sock(sk); if (scp->state == DN_CI || scp->state == DN_CC) *timeo = schedule_timeout(*timeo); lock_sock(sk); err = 0; if (scp->state == DN_RUN) break; err = sock_error(sk); if (err) break; err = sock_intr_errno(*timeo); if (signal_pending(current)) break; err = -ETIMEDOUT; if (!*timeo) break; |
aa3951451 net: sk_sleep() h... |
860 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4c Linux-2.6.12-rc2 |
861 |
} |
aa3951451 net: sk_sleep() h... |
862 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c Linux-2.6.12-rc2 |
863 864 865 866 867 868 869 870 871 872 873 874 875 876 |
out: if (err == 0) { sk->sk_socket->state = SS_CONNECTED; } else if (scp->state != DN_CI && scp->state != DN_CC) { sk->sk_socket->state = SS_UNCONNECTED; } return err; } static int __dn_connect(struct sock *sk, struct sockaddr_dn *addr, int addrlen, long *timeo, int flags) { struct socket *sock = sk->sk_socket; struct dn_scp *scp = DN_SK(sk); int err = -EISCONN; |
bef55aebd decnet: Convert t... |
877 |
struct flowidn fld; |
1da177e4c Linux-2.6.12-rc2 |
878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 |
if (sock->state == SS_CONNECTED) goto out; if (sock->state == SS_CONNECTING) { err = 0; if (scp->state == DN_RUN) { sock->state = SS_CONNECTED; goto out; } err = -ECONNREFUSED; if (scp->state != DN_CI && scp->state != DN_CC) { sock->state = SS_UNCONNECTED; goto out; } return dn_wait_run(sk, timeo); } err = -EINVAL; if (scp->state != DN_O) goto out; if (addr == NULL || addrlen != sizeof(struct sockaddr_dn)) goto out; if (addr->sdn_family != AF_DECnet) goto out; if (addr->sdn_flags & SDF_WILD) goto out; if (sock_flag(sk, SOCK_ZAPPED)) { err = dn_auto_bind(sk->sk_socket); if (err) goto out; } memcpy(&scp->peer, addr, sizeof(struct sockaddr_dn)); err = -EHOSTUNREACH; |
bef55aebd decnet: Convert t... |
916 917 918 919 920 921 922 |
memset(&fld, 0, sizeof(fld)); fld.flowidn_oif = sk->sk_bound_dev_if; fld.daddr = dn_saddr2dn(&scp->peer); fld.saddr = dn_saddr2dn(&scp->addr); dn_sk_ports_copy(&fld, scp); fld.flowidn_proto = DNPROTO_NSP; if (dn_route_output_sock(&sk->sk_dst_cache, &fld, sk, flags) < 0) |
1da177e4c Linux-2.6.12-rc2 |
923 924 925 926 |
goto out; sk->sk_route_caps = sk->sk_dst_cache->dev->features; sock->state = SS_CONNECTING; scp->state = DN_CI; |
0dbaee3b3 net: Abstract def... |
927 |
scp->segsize_loc = dst_metric_advmss(sk->sk_dst_cache); |
1da177e4c Linux-2.6.12-rc2 |
928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 |
dn_nsp_send_conninit(sk, NSP_CI); err = -EINPROGRESS; if (*timeo) { err = dn_wait_run(sk, timeo); } out: return err; } static int dn_connect(struct socket *sock, struct sockaddr *uaddr, int addrlen, int flags) { struct sockaddr_dn *addr = (struct sockaddr_dn *)uaddr; struct sock *sk = sock->sk; int err; long timeo = sock_sndtimeo(sk, flags & O_NONBLOCK); lock_sock(sk); err = __dn_connect(sk, addr, addrlen, &timeo, 0); release_sock(sk); return err; } static inline int dn_check_state(struct sock *sk, struct sockaddr_dn *addr, int addrlen, long *timeo, int flags) { struct dn_scp *scp = DN_SK(sk); |
06f8fe11b decnet: Reduce sw... |
955 956 957 958 959 960 961 962 963 964 |
switch (scp->state) { case DN_RUN: return 0; case DN_CR: return dn_confirm_accept(sk, timeo, sk->sk_allocation); case DN_CI: case DN_CC: return dn_wait_run(sk, timeo); case DN_O: return __dn_connect(sk, addr, addrlen, timeo, flags); |
1da177e4c Linux-2.6.12-rc2 |
965 966 967 968 969 970 971 972 |
} return -EINVAL; } static void dn_access_copy(struct sk_buff *skb, struct accessdata_dn *acc) { |
429eb0fae [NET] DECNET: Fix... |
973 |
unsigned char *ptr = skb->data; |
1da177e4c Linux-2.6.12-rc2 |
974 |
|
429eb0fae [NET] DECNET: Fix... |
975 976 977 |
acc->acc_userl = *ptr++; memcpy(&acc->acc_user, ptr, acc->acc_userl); ptr += acc->acc_userl; |
1da177e4c Linux-2.6.12-rc2 |
978 |
|
429eb0fae [NET] DECNET: Fix... |
979 980 981 |
acc->acc_passl = *ptr++; memcpy(&acc->acc_pass, ptr, acc->acc_passl); ptr += acc->acc_passl; |
1da177e4c Linux-2.6.12-rc2 |
982 |
|
429eb0fae [NET] DECNET: Fix... |
983 984 |
acc->acc_accl = *ptr++; memcpy(&acc->acc_acc, ptr, acc->acc_accl); |
1da177e4c Linux-2.6.12-rc2 |
985 |
|
429eb0fae [NET] DECNET: Fix... |
986 |
skb_pull(skb, acc->acc_accl + acc->acc_passl + acc->acc_userl + 3); |
1da177e4c Linux-2.6.12-rc2 |
987 988 989 990 991 |
} static void dn_user_copy(struct sk_buff *skb, struct optdata_dn *opt) { |
375d9d718 [DECNET]: Endiane... |
992 993 994 995 |
unsigned char *ptr = skb->data; u16 len = *ptr++; /* yes, it's 8bit on the wire */ BUG_ON(len > 16); /* we've checked the contents earlier */ |
c4106aa88 decnet: remove pr... |
996 |
opt->opt_optl = cpu_to_le16(len); |
375d9d718 [DECNET]: Endiane... |
997 998 999 |
opt->opt_status = 0; memcpy(opt->opt_data, ptr, len); skb_pull(skb, len + 1); |
1da177e4c Linux-2.6.12-rc2 |
1000 1001 1002 1003 1004 1005 1006 |
} static struct sk_buff *dn_wait_for_connect(struct sock *sk, long *timeo) { DEFINE_WAIT(wait); struct sk_buff *skb = NULL; int err = 0; |
aa3951451 net: sk_sleep() h... |
1007 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4c Linux-2.6.12-rc2 |
1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 |
for(;;) { release_sock(sk); skb = skb_dequeue(&sk->sk_receive_queue); if (skb == NULL) { *timeo = schedule_timeout(*timeo); skb = skb_dequeue(&sk->sk_receive_queue); } lock_sock(sk); if (skb != NULL) break; err = -EINVAL; if (sk->sk_state != TCP_LISTEN) break; err = sock_intr_errno(*timeo); if (signal_pending(current)) break; err = -EAGAIN; if (!*timeo) break; |
aa3951451 net: sk_sleep() h... |
1027 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4c Linux-2.6.12-rc2 |
1028 |
} |
aa3951451 net: sk_sleep() h... |
1029 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c Linux-2.6.12-rc2 |
1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 |
return skb == NULL ? ERR_PTR(err) : skb; } static int dn_accept(struct socket *sock, struct socket *newsock, int flags) { struct sock *sk = sock->sk, *newsk; struct sk_buff *skb = NULL; struct dn_skb_cb *cb; unsigned char menuver; int err = 0; unsigned char type; long timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
adf30907d net: skb->dst acc... |
1043 |
struct dst_entry *dst; |
1da177e4c Linux-2.6.12-rc2 |
1044 1045 |
lock_sock(sk); |
429eb0fae [NET] DECNET: Fix... |
1046 |
if (sk->sk_state != TCP_LISTEN || DN_SK(sk)->state != DN_O) { |
1da177e4c Linux-2.6.12-rc2 |
1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 |
release_sock(sk); return -EINVAL; } skb = skb_dequeue(&sk->sk_receive_queue); if (skb == NULL) { skb = dn_wait_for_connect(sk, &timeo); if (IS_ERR(skb)) { release_sock(sk); return PTR_ERR(skb); } } cb = DN_SKB_CB(skb); sk->sk_ack_backlog--; |
3b1e0a655 [NET] NETNS: Omit... |
1062 |
newsk = dn_alloc_sock(sock_net(sk), newsock, sk->sk_allocation); |
1da177e4c Linux-2.6.12-rc2 |
1063 1064 1065 1066 1067 1068 |
if (newsk == NULL) { release_sock(sk); kfree_skb(skb); return -ENOBUFS; } release_sock(sk); |
adf30907d net: skb->dst acc... |
1069 |
dst = skb_dst(skb); |
b6c6712a4 net: sk_dst_cache... |
1070 |
sk_dst_set(newsk, dst); |
adf30907d net: skb->dst acc... |
1071 |
skb_dst_set(skb, NULL); |
1da177e4c Linux-2.6.12-rc2 |
1072 |
|
429eb0fae [NET] DECNET: Fix... |
1073 |
DN_SK(newsk)->state = DN_CR; |
1da177e4c Linux-2.6.12-rc2 |
1074 1075 1076 1077 1078 |
DN_SK(newsk)->addrrem = cb->src_port; DN_SK(newsk)->services_rem = cb->services; DN_SK(newsk)->info_rem = cb->info; DN_SK(newsk)->segsize_rem = cb->segsize; DN_SK(newsk)->accept_mode = DN_SK(sk)->accept_mode; |
429eb0fae [NET] DECNET: Fix... |
1079 |
|
1da177e4c Linux-2.6.12-rc2 |
1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 |
if (DN_SK(newsk)->segsize_rem < 230) DN_SK(newsk)->segsize_rem = 230; if ((DN_SK(newsk)->services_rem & NSP_FC_MASK) == NSP_FC_NONE) DN_SK(newsk)->max_window = decnet_no_fc_max_cwnd; newsk->sk_state = TCP_LISTEN; memcpy(&(DN_SK(newsk)->addr), &(DN_SK(sk)->addr), sizeof(struct sockaddr_dn)); /* * If we are listening on a wild socket, we don't want * the newly created socket on the wrong hash queue. */ DN_SK(newsk)->addr.sdn_flags &= ~SDF_WILD; skb_pull(skb, dn_username2sockaddr(skb->data, skb->len, &(DN_SK(newsk)->addr), &type)); skb_pull(skb, dn_username2sockaddr(skb->data, skb->len, &(DN_SK(newsk)->peer), &type)); |
c4ea94ab3 [DECnet]: Endian ... |
1097 1098 |
*(__le16 *)(DN_SK(newsk)->peer.sdn_add.a_addr) = cb->src; *(__le16 *)(DN_SK(newsk)->addr.sdn_add.a_addr) = cb->dst; |
1da177e4c Linux-2.6.12-rc2 |
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 1126 1127 1128 |
menuver = *skb->data; skb_pull(skb, 1); if (menuver & DN_MENUVER_ACC) dn_access_copy(skb, &(DN_SK(newsk)->accessdata)); if (menuver & DN_MENUVER_USR) dn_user_copy(skb, &(DN_SK(newsk)->conndata_in)); if (menuver & DN_MENUVER_PRX) DN_SK(newsk)->peer.sdn_flags |= SDF_PROXY; if (menuver & DN_MENUVER_UIC) DN_SK(newsk)->peer.sdn_flags |= SDF_UICPROXY; kfree_skb(skb); memcpy(&(DN_SK(newsk)->conndata_out), &(DN_SK(sk)->conndata_out), sizeof(struct optdata_dn)); memcpy(&(DN_SK(newsk)->discdata_out), &(DN_SK(sk)->discdata_out), sizeof(struct optdata_dn)); lock_sock(newsk); err = dn_hash_sock(newsk); if (err == 0) { sock_reset_flag(newsk, SOCK_ZAPPED); dn_send_conn_ack(newsk); /* |
429eb0fae [NET] DECNET: Fix... |
1129 1130 1131 |
* Here we use sk->sk_allocation since although the conn conf is * for the newsk, the context is the old socket. */ |
1da177e4c Linux-2.6.12-rc2 |
1132 1133 1134 1135 1136 |
if (DN_SK(newsk)->accept_mode == ACC_IMMED) err = dn_confirm_accept(newsk, &timeo, sk->sk_allocation); } release_sock(newsk); |
429eb0fae [NET] DECNET: Fix... |
1137 |
return err; |
1da177e4c Linux-2.6.12-rc2 |
1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 |
} static int dn_getname(struct socket *sock, struct sockaddr *uaddr,int *uaddr_len,int peer) { struct sockaddr_dn *sa = (struct sockaddr_dn *)uaddr; struct sock *sk = sock->sk; struct dn_scp *scp = DN_SK(sk); *uaddr_len = sizeof(struct sockaddr_dn); lock_sock(sk); if (peer) { |
429eb0fae [NET] DECNET: Fix... |
1152 1153 |
if ((sock->state != SS_CONNECTED && sock->state != SS_CONNECTING) && |
52c41a322 [DECNET]: Fix sfu... |
1154 |
scp->accept_mode == ACC_IMMED) { |
429eb0fae [NET] DECNET: Fix... |
1155 |
release_sock(sk); |
1da177e4c Linux-2.6.12-rc2 |
1156 |
return -ENOTCONN; |
52c41a322 [DECNET]: Fix sfu... |
1157 |
} |
1da177e4c Linux-2.6.12-rc2 |
1158 1159 1160 1161 1162 1163 1164 |
memcpy(sa, &scp->peer, sizeof(struct sockaddr_dn)); } else { memcpy(sa, &scp->addr, sizeof(struct sockaddr_dn)); } release_sock(sk); |
429eb0fae [NET] DECNET: Fix... |
1165 |
return 0; |
1da177e4c Linux-2.6.12-rc2 |
1166 1167 1168 1169 1170 1171 1172 1173 |
} static unsigned int dn_poll(struct file *file, struct socket *sock, poll_table *wait) { struct sock *sk = sock->sk; struct dn_scp *scp = DN_SK(sk); int mask = datagram_poll(file, sock, wait); |
b03efcfb2 [NET]: Transform ... |
1174 |
if (!skb_queue_empty(&scp->other_receive_queue)) |
1da177e4c Linux-2.6.12-rc2 |
1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 |
mask |= POLLRDBAND; return mask; } static int dn_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { struct sock *sk = sock->sk; struct dn_scp *scp = DN_SK(sk); int err = -EOPNOTSUPP; long amount = 0; struct sk_buff *skb; int val; switch(cmd) { case SIOCGIFADDR: case SIOCSIFADDR: return dn_dev_ioctl(cmd, (void __user *)arg); case SIOCATMARK: lock_sock(sk); |
b03efcfb2 [NET]: Transform ... |
1197 |
val = !skb_queue_empty(&scp->other_receive_queue); |
1da177e4c Linux-2.6.12-rc2 |
1198 1199 1200 1201 1202 1203 |
if (scp->state != DN_RUN) val = -ENOTCONN; release_sock(sk); return val; case TIOCOUTQ: |
31e6d363a net: correct off-... |
1204 |
amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); |
1da177e4c Linux-2.6.12-rc2 |
1205 1206 1207 1208 1209 1210 1211 |
if (amount < 0) amount = 0; err = put_user(amount, (int __user *)arg); break; case TIOCINQ: lock_sock(sk); |
e57c624be decnet: fix spars... |
1212 1213 |
skb = skb_peek(&scp->other_receive_queue); if (skb) { |
1da177e4c Linux-2.6.12-rc2 |
1214 1215 |
amount = skb->len; } else { |
bec571ec7 decnet: Use SKB q... |
1216 |
skb_queue_walk(&sk->sk_receive_queue, skb) |
1da177e4c Linux-2.6.12-rc2 |
1217 |
amount += skb->len; |
1da177e4c Linux-2.6.12-rc2 |
1218 1219 1220 1221 1222 1223 |
} release_sock(sk); err = put_user(amount, (int __user *)arg); break; default: |
b5e5fa5e0 [NET]: Add a dev_... |
1224 |
err = -ENOIOCTLCMD; |
1da177e4c Linux-2.6.12-rc2 |
1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 |
break; } return err; } static int dn_listen(struct socket *sock, int backlog) { struct sock *sk = sock->sk; int err = -EINVAL; lock_sock(sk); if (sock_flag(sk, SOCK_ZAPPED)) goto out; if ((DN_SK(sk)->state != DN_O) || (sk->sk_state == TCP_LISTEN)) goto out; sk->sk_max_ack_backlog = backlog; sk->sk_ack_backlog = 0; sk->sk_state = TCP_LISTEN; err = 0; dn_rehash_sock(sk); out: release_sock(sk); |
429eb0fae [NET] DECNET: Fix... |
1252 |
return err; |
1da177e4c Linux-2.6.12-rc2 |
1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 |
} static int dn_shutdown(struct socket *sock, int how) { struct sock *sk = sock->sk; struct dn_scp *scp = DN_SK(sk); int err = -ENOTCONN; lock_sock(sk); if (sock->state == SS_UNCONNECTED) goto out; err = 0; if (sock->state == SS_DISCONNECTING) goto out; err = -EINVAL; if (scp->state == DN_O) goto out; if (how != SHUTDOWN_MASK) goto out; sk->sk_shutdown = how; dn_destroy_sock(sk); err = 0; out: release_sock(sk); return err; } |
b7058842c net: Make setsock... |
1287 |
static int dn_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) |
1da177e4c Linux-2.6.12-rc2 |
1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 |
{ struct sock *sk = sock->sk; int err; lock_sock(sk); err = __dn_setsockopt(sock, level, optname, optval, optlen, 0); release_sock(sk); return err; } |
b7058842c net: Make setsock... |
1298 |
static int __dn_setsockopt(struct socket *sock, int level,int optname, char __user *optval, unsigned int optlen, int flags) |
1da177e4c Linux-2.6.12-rc2 |
1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 |
{ struct sock *sk = sock->sk; struct dn_scp *scp = DN_SK(sk); long timeo; union { struct optdata_dn opt; struct accessdata_dn acc; int mode; unsigned long win; int val; unsigned char services; unsigned char info; } u; int err; if (optlen && !optval) return -EINVAL; if (optlen > sizeof(u)) return -EINVAL; if (copy_from_user(&u, optval, optlen)) return -EFAULT; |
06f8fe11b decnet: Reduce sw... |
1322 1323 1324 1325 1326 1327 |
switch (optname) { case DSO_CONDATA: if (sock->state == SS_CONNECTED) return -EISCONN; if ((scp->state != DN_O) && (scp->state != DN_CR)) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1328 |
|
06f8fe11b decnet: Reduce sw... |
1329 1330 |
if (optlen != sizeof(struct optdata_dn)) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1331 |
|
06f8fe11b decnet: Reduce sw... |
1332 1333 |
if (le16_to_cpu(u.opt.opt_optl) > 16) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1334 |
|
06f8fe11b decnet: Reduce sw... |
1335 1336 |
memcpy(&scp->conndata_out, &u.opt, optlen); break; |
1da177e4c Linux-2.6.12-rc2 |
1337 |
|
06f8fe11b decnet: Reduce sw... |
1338 1339 1340 1341 |
case DSO_DISDATA: if (sock->state != SS_CONNECTED && scp->accept_mode == ACC_IMMED) return -ENOTCONN; |
1da177e4c Linux-2.6.12-rc2 |
1342 |
|
06f8fe11b decnet: Reduce sw... |
1343 1344 |
if (optlen != sizeof(struct optdata_dn)) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1345 |
|
06f8fe11b decnet: Reduce sw... |
1346 1347 |
if (le16_to_cpu(u.opt.opt_optl) > 16) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1348 |
|
06f8fe11b decnet: Reduce sw... |
1349 1350 |
memcpy(&scp->discdata_out, &u.opt, optlen); break; |
1da177e4c Linux-2.6.12-rc2 |
1351 |
|
06f8fe11b decnet: Reduce sw... |
1352 1353 1354 1355 1356 |
case DSO_CONACCESS: if (sock->state == SS_CONNECTED) return -EISCONN; if (scp->state != DN_O) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1357 |
|
06f8fe11b decnet: Reduce sw... |
1358 1359 |
if (optlen != sizeof(struct accessdata_dn)) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1360 |
|
06f8fe11b decnet: Reduce sw... |
1361 1362 1363 1364 |
if ((u.acc.acc_accl > DN_MAXACCL) || (u.acc.acc_passl > DN_MAXACCL) || (u.acc.acc_userl > DN_MAXACCL)) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1365 |
|
06f8fe11b decnet: Reduce sw... |
1366 1367 |
memcpy(&scp->accessdata, &u.acc, optlen); break; |
1da177e4c Linux-2.6.12-rc2 |
1368 |
|
06f8fe11b decnet: Reduce sw... |
1369 1370 1371 1372 1373 |
case DSO_ACCEPTMODE: if (sock->state == SS_CONNECTED) return -EISCONN; if (scp->state != DN_O) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1374 |
|
06f8fe11b decnet: Reduce sw... |
1375 1376 |
if (optlen != sizeof(int)) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1377 |
|
06f8fe11b decnet: Reduce sw... |
1378 1379 |
if ((u.mode != ACC_IMMED) && (u.mode != ACC_DEFER)) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1380 |
|
06f8fe11b decnet: Reduce sw... |
1381 1382 |
scp->accept_mode = (unsigned char)u.mode; break; |
1da177e4c Linux-2.6.12-rc2 |
1383 |
|
06f8fe11b decnet: Reduce sw... |
1384 1385 1386 1387 1388 1389 |
case DSO_CONACCEPT: if (scp->state != DN_CR) return -EINVAL; timeo = sock_rcvtimeo(sk, 0); err = dn_confirm_accept(sk, &timeo, sk->sk_allocation); return err; |
1da177e4c Linux-2.6.12-rc2 |
1390 |
|
06f8fe11b decnet: Reduce sw... |
1391 1392 1393 |
case DSO_CONREJECT: if (scp->state != DN_CR) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
1394 |
|
06f8fe11b decnet: Reduce sw... |
1395 1396 1397 1398 |
scp->state = DN_DR; sk->sk_shutdown = SHUTDOWN_MASK; dn_nsp_send_disc(sk, 0x38, 0, sk->sk_allocation); break; |
1da177e4c Linux-2.6.12-rc2 |
1399 |
|
06f8fe11b decnet: Reduce sw... |
1400 |
default: |
1da177e4c Linux-2.6.12-rc2 |
1401 1402 1403 |
#ifdef CONFIG_NETFILTER return nf_setsockopt(sk, PF_DECnet, optname, optval, optlen); #endif |
06f8fe11b decnet: Reduce sw... |
1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 |
case DSO_LINKINFO: case DSO_STREAM: case DSO_SEQPACKET: return -ENOPROTOOPT; case DSO_MAXWINDOW: if (optlen != sizeof(unsigned long)) return -EINVAL; if (u.win > NSP_MAX_WINDOW) u.win = NSP_MAX_WINDOW; if (u.win == 0) return -EINVAL; scp->max_window = u.win; if (scp->snd_window > u.win) scp->snd_window = u.win; break; |
1da177e4c Linux-2.6.12-rc2 |
1420 |
|
06f8fe11b decnet: Reduce sw... |
1421 1422 1423 1424 1425 1426 1427 1428 |
case DSO_NODELAY: if (optlen != sizeof(int)) return -EINVAL; if (scp->nonagle == 2) return -EINVAL; scp->nonagle = (u.val == 0) ? 0 : 1; /* if (scp->nonagle == 1) { Push pending frames } */ break; |
1da177e4c Linux-2.6.12-rc2 |
1429 |
|
06f8fe11b decnet: Reduce sw... |
1430 1431 1432 1433 1434 1435 1436 1437 |
case DSO_CORK: if (optlen != sizeof(int)) return -EINVAL; if (scp->nonagle == 1) return -EINVAL; scp->nonagle = (u.val == 0) ? 0 : 2; /* if (scp->nonagle == 0) { Push pending frames } */ break; |
1da177e4c Linux-2.6.12-rc2 |
1438 |
|
06f8fe11b decnet: Reduce sw... |
1439 1440 1441 1442 1443 1444 1445 1446 1447 |
case DSO_SERVICES: if (optlen != sizeof(unsigned char)) return -EINVAL; if ((u.services & ~NSP_FC_MASK) != 0x01) return -EINVAL; if ((u.services & NSP_FC_MASK) == NSP_FC_MASK) return -EINVAL; scp->services_loc = u.services; break; |
1da177e4c Linux-2.6.12-rc2 |
1448 |
|
06f8fe11b decnet: Reduce sw... |
1449 1450 1451 1452 1453 1454 1455 |
case DSO_INFO: if (optlen != sizeof(unsigned char)) return -EINVAL; if (u.info & 0xfc) return -EINVAL; scp->info_loc = u.info; break; |
1da177e4c Linux-2.6.12-rc2 |
1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 |
} return 0; } static int dn_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) { struct sock *sk = sock->sk; int err; lock_sock(sk); err = __dn_getsockopt(sock, level, optname, optval, optlen, 0); release_sock(sk); return err; } static int __dn_getsockopt(struct socket *sock, int level,int optname, char __user *optval,int __user *optlen, int flags) { struct sock *sk = sock->sk; struct dn_scp *scp = DN_SK(sk); struct linkinfo_dn link; unsigned int r_len; void *r_data = NULL; unsigned int val; if(get_user(r_len , optlen)) return -EFAULT; |
429eb0fae [NET] DECNET: Fix... |
1484 |
|
06f8fe11b decnet: Reduce sw... |
1485 1486 1487 1488 1489 1490 |
switch (optname) { case DSO_CONDATA: if (r_len > sizeof(struct optdata_dn)) r_len = sizeof(struct optdata_dn); r_data = &scp->conndata_in; break; |
1da177e4c Linux-2.6.12-rc2 |
1491 |
|
06f8fe11b decnet: Reduce sw... |
1492 1493 1494 1495 1496 |
case DSO_DISDATA: if (r_len > sizeof(struct optdata_dn)) r_len = sizeof(struct optdata_dn); r_data = &scp->discdata_in; break; |
1da177e4c Linux-2.6.12-rc2 |
1497 |
|
06f8fe11b decnet: Reduce sw... |
1498 1499 1500 1501 1502 |
case DSO_CONACCESS: if (r_len > sizeof(struct accessdata_dn)) r_len = sizeof(struct accessdata_dn); r_data = &scp->accessdata; break; |
1da177e4c Linux-2.6.12-rc2 |
1503 |
|
06f8fe11b decnet: Reduce sw... |
1504 1505 1506 1507 1508 |
case DSO_ACCEPTMODE: if (r_len > sizeof(unsigned char)) r_len = sizeof(unsigned char); r_data = &scp->accept_mode; break; |
1da177e4c Linux-2.6.12-rc2 |
1509 |
|
06f8fe11b decnet: Reduce sw... |
1510 1511 1512 |
case DSO_LINKINFO: if (r_len > sizeof(struct linkinfo_dn)) r_len = sizeof(struct linkinfo_dn); |
3c6f27bf3 DECnet: don't lea... |
1513 |
|
06f8fe11b decnet: Reduce sw... |
1514 |
memset(&link, 0, sizeof(link)); |
1da177e4c Linux-2.6.12-rc2 |
1515 |
|
06f8fe11b decnet: Reduce sw... |
1516 1517 1518 1519 1520 1521 1522 1523 1524 |
switch (sock->state) { case SS_CONNECTING: link.idn_linkstate = LL_CONNECTING; break; case SS_DISCONNECTING: link.idn_linkstate = LL_DISCONNECTING; break; case SS_CONNECTED: link.idn_linkstate = LL_RUNNING; |
1da177e4c Linux-2.6.12-rc2 |
1525 |
break; |
1da177e4c Linux-2.6.12-rc2 |
1526 |
default: |
06f8fe11b decnet: Reduce sw... |
1527 1528 1529 1530 1531 1532 1533 1534 |
link.idn_linkstate = LL_INACTIVE; } link.idn_segsize = scp->segsize_rem; r_data = &link; break; default: |
1da177e4c Linux-2.6.12-rc2 |
1535 |
#ifdef CONFIG_NETFILTER |
06f8fe11b decnet: Reduce sw... |
1536 1537 |
{ int ret, len; |
429eb0fae [NET] DECNET: Fix... |
1538 |
|
06f8fe11b decnet: Reduce sw... |
1539 1540 |
if (get_user(len, optlen)) return -EFAULT; |
429eb0fae [NET] DECNET: Fix... |
1541 |
|
06f8fe11b decnet: Reduce sw... |
1542 1543 1544 1545 1546 |
ret = nf_getsockopt(sk, PF_DECnet, optname, optval, &len); if (ret >= 0) ret = put_user(len, optlen); return ret; } |
1da177e4c Linux-2.6.12-rc2 |
1547 |
#endif |
06f8fe11b decnet: Reduce sw... |
1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 |
case DSO_STREAM: case DSO_SEQPACKET: case DSO_CONACCEPT: case DSO_CONREJECT: return -ENOPROTOOPT; case DSO_MAXWINDOW: if (r_len > sizeof(unsigned long)) r_len = sizeof(unsigned long); r_data = &scp->max_window; break; |
1da177e4c Linux-2.6.12-rc2 |
1559 |
|
06f8fe11b decnet: Reduce sw... |
1560 1561 1562 1563 1564 1565 |
case DSO_NODELAY: if (r_len > sizeof(int)) r_len = sizeof(int); val = (scp->nonagle == 1); r_data = &val; break; |
1da177e4c Linux-2.6.12-rc2 |
1566 |
|
06f8fe11b decnet: Reduce sw... |
1567 1568 1569 1570 1571 1572 |
case DSO_CORK: if (r_len > sizeof(int)) r_len = sizeof(int); val = (scp->nonagle == 2); r_data = &val; break; |
1da177e4c Linux-2.6.12-rc2 |
1573 |
|
06f8fe11b decnet: Reduce sw... |
1574 1575 1576 1577 1578 |
case DSO_SERVICES: if (r_len > sizeof(unsigned char)) r_len = sizeof(unsigned char); r_data = &scp->services_rem; break; |
1da177e4c Linux-2.6.12-rc2 |
1579 |
|
06f8fe11b decnet: Reduce sw... |
1580 1581 1582 1583 1584 |
case DSO_INFO: if (r_len > sizeof(unsigned char)) r_len = sizeof(unsigned char); r_data = &scp->info_rem; break; |
1da177e4c Linux-2.6.12-rc2 |
1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 |
} if (r_data) { if (copy_to_user(optval, r_data, r_len)) return -EFAULT; if (put_user(r_len, optlen)) return -EFAULT; } return 0; } static int dn_data_ready(struct sock *sk, struct sk_buff_head *q, int flags, int target) { |
bec571ec7 decnet: Use SKB q... |
1600 |
struct sk_buff *skb; |
1da177e4c Linux-2.6.12-rc2 |
1601 1602 1603 |
int len = 0; if (flags & MSG_OOB) |
b03efcfb2 [NET]: Transform ... |
1604 |
return !skb_queue_empty(q) ? 1 : 0; |
1da177e4c Linux-2.6.12-rc2 |
1605 |
|
bec571ec7 decnet: Use SKB q... |
1606 |
skb_queue_walk(q, skb) { |
1da177e4c Linux-2.6.12-rc2 |
1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 |
struct dn_skb_cb *cb = DN_SKB_CB(skb); len += skb->len; if (cb->nsp_flags & 0x40) { /* SOCK_SEQPACKET reads to EOM */ if (sk->sk_type == SOCK_SEQPACKET) return 1; /* so does SOCK_STREAM unless WAITALL is specified */ if (!(flags & MSG_WAITALL)) return 1; } /* minimum data length for read exceeded */ if (len >= target) return 1; |
1da177e4c Linux-2.6.12-rc2 |
1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 |
} return 0; } static int dn_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t size, int flags) { struct sock *sk = sock->sk; struct dn_scp *scp = DN_SK(sk); struct sk_buff_head *queue = &sk->sk_receive_queue; size_t target = size > 1 ? 1 : 0; size_t copied = 0; int rv = 0; |
bec571ec7 decnet: Use SKB q... |
1637 |
struct sk_buff *skb, *n; |
1da177e4c Linux-2.6.12-rc2 |
1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 |
struct dn_skb_cb *cb = NULL; unsigned char eor = 0; long timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); lock_sock(sk); if (sock_flag(sk, SOCK_ZAPPED)) { rv = -EADDRNOTAVAIL; goto out; } |
1da177e4c Linux-2.6.12-rc2 |
1648 |
if (sk->sk_shutdown & RCV_SHUTDOWN) { |
9eb5c94ef [DECNET]: fix SIG... |
1649 |
rv = 0; |
1da177e4c Linux-2.6.12-rc2 |
1650 1651 |
goto out; } |
9eb5c94ef [DECNET]: fix SIG... |
1652 1653 1654 |
rv = dn_check_state(sk, NULL, 0, &timeo, flags); if (rv) goto out; |
c60992db4 [DECnet]: Patch t... |
1655 |
if (flags & ~(MSG_CMSG_COMPAT|MSG_PEEK|MSG_OOB|MSG_WAITALL|MSG_DONTWAIT|MSG_NOSIGNAL)) { |
1da177e4c Linux-2.6.12-rc2 |
1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 |
rv = -EOPNOTSUPP; goto out; } if (flags & MSG_OOB) queue = &scp->other_receive_queue; if (flags & MSG_WAITALL) target = size; /* * See if there is data ready to read, sleep if there isn't */ for(;;) { |
22196d364 decnet: Remove SO... |
1671 |
DEFINE_WAIT(wait); |
1da177e4c Linux-2.6.12-rc2 |
1672 1673 |
if (sk->sk_err) goto out; |
b03efcfb2 [NET]: Transform ... |
1674 |
if (!skb_queue_empty(&scp->other_receive_queue)) { |
1da177e4c Linux-2.6.12-rc2 |
1675 1676 1677 1678 1679 1680 1681 1682 |
if (!(flags & MSG_OOB)) { msg->msg_flags |= MSG_OOB; if (!scp->other_report) { scp->other_report = 1; goto out; } } } |
429eb0fae [NET] DECNET: Fix... |
1683 |
|
1da177e4c Linux-2.6.12-rc2 |
1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 |
if (scp->state != DN_RUN) goto out; if (signal_pending(current)) { rv = sock_intr_errno(timeo); goto out; } if (dn_data_ready(sk, queue, flags, target)) break; if (flags & MSG_DONTWAIT) { rv = -EWOULDBLOCK; goto out; } |
aa3951451 net: sk_sleep() h... |
1699 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
22196d364 decnet: Remove SO... |
1700 1701 1702 |
set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); sk_wait_event(sk, &timeo, dn_data_ready(sk, queue, flags, target)); clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); |
aa3951451 net: sk_sleep() h... |
1703 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c Linux-2.6.12-rc2 |
1704 |
} |
bec571ec7 decnet: Use SKB q... |
1705 |
skb_queue_walk_safe(queue, skb, n) { |
1da177e4c Linux-2.6.12-rc2 |
1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 |
unsigned int chunk = skb->len; cb = DN_SKB_CB(skb); if ((chunk + copied) > size) chunk = size - copied; if (memcpy_toiovec(msg->msg_iov, skb->data, chunk)) { rv = -EFAULT; break; } copied += chunk; if (!(flags & MSG_PEEK)) skb_pull(skb, chunk); eor = cb->nsp_flags & 0x40; |
1da177e4c Linux-2.6.12-rc2 |
1722 1723 |
if (skb->len == 0) { |
8728b834b [NET]: Kill skb->... |
1724 |
skb_unlink(skb, queue); |
1da177e4c Linux-2.6.12-rc2 |
1725 |
kfree_skb(skb); |
429eb0fae [NET] DECNET: Fix... |
1726 |
/* |
1da177e4c Linux-2.6.12-rc2 |
1727 1728 1729 1730 1731 1732 1733 1734 |
* N.B. Don't refer to skb or cb after this point * in loop. */ if ((scp->flowloc_sw == DN_DONTSEND) && !dn_congested(sk)) { scp->flowloc_sw = DN_SEND; dn_nsp_send_link(sk, DN_SEND, 0); } } |
429eb0fae [NET] DECNET: Fix... |
1735 |
if (eor) { |
1da177e4c Linux-2.6.12-rc2 |
1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 |
if (sk->sk_type == SOCK_SEQPACKET) break; if (!(flags & MSG_WAITALL)) break; } if (flags & MSG_OOB) break; if (copied >= target) break; } rv = copied; if (eor && (sk->sk_type == SOCK_SEQPACKET)) msg->msg_flags |= MSG_EOR; out: if (rv == 0) rv = (flags & MSG_PEEK) ? -sk->sk_err : sock_error(sk); if ((rv >= 0) && msg->msg_name) { memcpy(msg->msg_name, &scp->peer, sizeof(struct sockaddr_dn)); msg->msg_namelen = sizeof(struct sockaddr_dn); } release_sock(sk); return rv; } static inline int dn_queue_too_long(struct dn_scp *scp, struct sk_buff_head *queue, int flags) { unsigned char fctype = scp->services_rem & NSP_FC_MASK; if (skb_queue_len(queue) >= scp->snd_window) return 1; if (fctype != NSP_FC_NONE) { if (flags & MSG_OOB) { if (scp->flowrem_oth == 0) return 1; } else { if (scp->flowrem_dat == 0) return 1; } } return 0; } /* |
59c51591a Fix occurrences o... |
1788 |
* The DECnet spec requires that the "routing layer" accepts packets which |
1da177e4c Linux-2.6.12-rc2 |
1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 |
* are at least 230 bytes in size. This excludes any headers which the NSP * layer might add, so we always assume that we'll be using the maximal * length header on data packets. The variation in length is due to the * inclusion (or not) of the two 16 bit acknowledgement fields so it doesn't * make much practical difference. */ unsigned dn_mss_from_pmtu(struct net_device *dev, int mtu) { unsigned mss = 230 - DN_MAX_NSP_DATA_HEADER; if (dev) { |
fc766e4c4 decnet: RCU conve... |
1799 |
struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr); |
1da177e4c Linux-2.6.12-rc2 |
1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 |
mtu -= LL_RESERVED_SPACE(dev); if (dn_db->use_long) mtu -= 21; else mtu -= 6; mtu -= DN_MAX_NSP_DATA_HEADER; } else { /* * 21 = long header, 16 = guess at MAC header length */ mtu -= (21 + DN_MAX_NSP_DATA_HEADER + 16); } if (mtu > mss) mss = mtu; return mss; } static inline unsigned int dn_current_mss(struct sock *sk, int flags) { struct dst_entry *dst = __sk_dst_get(sk); struct dn_scp *scp = DN_SK(sk); int mss_now = min_t(int, scp->segsize_loc, scp->segsize_rem); /* Other data messages are limited to 16 bytes per packet */ if (flags & MSG_OOB) return 16; /* This works out the maximum size of segment we can send out */ if (dst) { u32 mtu = dst_mtu(dst); mss_now = min_t(int, dn_mss_from_pmtu(dst->dev, mtu), mss_now); } return mss_now; } |
429eb0fae [NET] DECNET: Fix... |
1835 |
/* |
12a49ffd8 [DECNET]: Tidy se... |
1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 |
* N.B. We get the timeout wrong here, but then we always did get it * wrong before and this is another step along the road to correcting * it. It ought to get updated each time we pass through the routine, * but in practise it probably doesn't matter too much for now. */ static inline struct sk_buff *dn_alloc_send_pskb(struct sock *sk, unsigned long datalen, int noblock, int *errcode) { struct sk_buff *skb = sock_alloc_send_skb(sk, datalen, noblock, errcode); if (skb) { |
b98999dc3 [DECNET]: Use hto... |
1848 |
skb->protocol = htons(ETH_P_DNA_RT); |
12a49ffd8 [DECNET]: Tidy se... |
1849 1850 1851 1852 |
skb->pkt_type = PACKET_OUTGOING; } return skb; } |
1da177e4c Linux-2.6.12-rc2 |
1853 |
static int dn_sendmsg(struct kiocb *iocb, struct socket *sock, |
12a49ffd8 [DECNET]: Tidy se... |
1854 |
struct msghdr *msg, size_t size) |
1da177e4c Linux-2.6.12-rc2 |
1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 |
{ struct sock *sk = sock->sk; struct dn_scp *scp = DN_SK(sk); size_t mss; struct sk_buff_head *queue = &scp->data_xmit_queue; int flags = msg->msg_flags; int err = 0; size_t sent = 0; int addr_len = msg->msg_namelen; struct sockaddr_dn *addr = (struct sockaddr_dn *)msg->msg_name; struct sk_buff *skb = NULL; struct dn_skb_cb *cb; size_t len; unsigned char fctype; |
12a49ffd8 [DECNET]: Tidy se... |
1869 |
long timeo; |
1da177e4c Linux-2.6.12-rc2 |
1870 1871 1872 1873 1874 1875 |
if (flags & ~(MSG_TRYHARD|MSG_OOB|MSG_DONTWAIT|MSG_EOR|MSG_NOSIGNAL|MSG_MORE|MSG_CMSG_COMPAT)) return -EOPNOTSUPP; if (addr_len && (addr_len != sizeof(struct sockaddr_dn))) return -EINVAL; |
12a49ffd8 [DECNET]: Tidy se... |
1876 1877 |
lock_sock(sk); timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT); |
1da177e4c Linux-2.6.12-rc2 |
1878 1879 1880 1881 1882 1883 |
/* * The only difference between stream sockets and sequenced packet * sockets is that the stream sockets always behave as if MSG_EOR * has been set. */ if (sock->type == SOCK_STREAM) { |
12a49ffd8 [DECNET]: Tidy se... |
1884 1885 1886 1887 |
if (flags & MSG_EOR) { err = -EINVAL; goto out; } |
1da177e4c Linux-2.6.12-rc2 |
1888 1889 |
flags |= MSG_EOR; } |
1da177e4c Linux-2.6.12-rc2 |
1890 1891 1892 1893 1894 1895 1896 |
err = dn_check_state(sk, addr, addr_len, &timeo, flags); if (err) goto out_err; if (sk->sk_shutdown & SEND_SHUTDOWN) { err = -EPIPE; |
9eb5c94ef [DECNET]: fix SIG... |
1897 1898 |
if (!(flags & MSG_NOSIGNAL)) send_sig(SIGPIPE, current, 0); |
1da177e4c Linux-2.6.12-rc2 |
1899 1900 1901 1902 |
goto out_err; } if ((flags & MSG_TRYHARD) && sk->sk_dst_cache) |
b6c6712a4 net: sk_dst_cache... |
1903 |
dst_negative_advice(sk); |
1da177e4c Linux-2.6.12-rc2 |
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 |
mss = scp->segsize_rem; fctype = scp->services_rem & NSP_FC_MASK; mss = dn_current_mss(sk, flags); if (flags & MSG_OOB) { queue = &scp->other_xmit_queue; if (size > mss) { err = -EMSGSIZE; goto out; } } scp->persist_fxn = dn_nsp_xmit_timeout; while(sent < size) { err = sock_error(sk); if (err) goto out; if (signal_pending(current)) { err = sock_intr_errno(timeo); goto out; } /* * Calculate size that we wish to send. */ len = size - sent; if (len > mss) len = mss; /* * Wait for queue size to go down below the window * size. */ if (dn_queue_too_long(scp, queue, flags)) { |
22196d364 decnet: Remove SO... |
1943 |
DEFINE_WAIT(wait); |
1da177e4c Linux-2.6.12-rc2 |
1944 1945 1946 1947 |
if (flags & MSG_DONTWAIT) { err = -EWOULDBLOCK; goto out; } |
aa3951451 net: sk_sleep() h... |
1948 |
prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
22196d364 decnet: Remove SO... |
1949 1950 1951 1952 |
set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); sk_wait_event(sk, &timeo, !dn_queue_too_long(scp, queue, flags)); clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); |
aa3951451 net: sk_sleep() h... |
1953 |
finish_wait(sk_sleep(sk), &wait); |
1da177e4c Linux-2.6.12-rc2 |
1954 1955 1956 1957 1958 |
continue; } /* * Get a suitably sized skb. |
12a49ffd8 [DECNET]: Tidy se... |
1959 1960 1961 |
* 64 is a bit of a hack really, but its larger than any * link-layer headers and has served us well as a good * guess as to their real length. |
1da177e4c Linux-2.6.12-rc2 |
1962 |
*/ |
12a49ffd8 [DECNET]: Tidy se... |
1963 1964 |
skb = dn_alloc_send_pskb(sk, len + 64 + DN_MAX_NSP_DATA_HEADER, flags & MSG_DONTWAIT, &err); |
1da177e4c Linux-2.6.12-rc2 |
1965 1966 1967 1968 1969 1970 1971 1972 |
if (err) break; if (!skb) continue; cb = DN_SKB_CB(skb); |
12a49ffd8 [DECNET]: Tidy se... |
1973 |
skb_reserve(skb, 64 + DN_MAX_NSP_DATA_HEADER); |
1da177e4c Linux-2.6.12-rc2 |
1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 |
if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { err = -EFAULT; goto out; } if (flags & MSG_OOB) { cb->nsp_flags = 0x30; if (fctype != NSP_FC_NONE) scp->flowrem_oth--; } else { cb->nsp_flags = 0x00; if (scp->seg_total == 0) cb->nsp_flags |= 0x20; scp->seg_total += len; |
429eb0fae [NET] DECNET: Fix... |
1990 |
|
1da177e4c Linux-2.6.12-rc2 |
1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 |
if (((sent + len) == size) && (flags & MSG_EOR)) { cb->nsp_flags |= 0x40; scp->seg_total = 0; if (fctype == NSP_FC_SCMC) scp->flowrem_dat--; } if (fctype == NSP_FC_SRC) scp->flowrem_dat--; } sent += len; dn_nsp_queue_xmit(sk, skb, sk->sk_allocation, flags & MSG_OOB); skb = NULL; scp->persist = dn_nsp_persist(sk); } out: |
db849df63 decnet: remove so... |
2009 |
kfree_skb(skb); |
1da177e4c Linux-2.6.12-rc2 |
2010 2011 2012 2013 2014 2015 |
release_sock(sk); return sent ? sent : err; out_err: |
001ab02a8 [DECNET]: Use sk_... |
2016 |
err = sk_stream_error(sk, flags, err); |
1da177e4c Linux-2.6.12-rc2 |
2017 2018 2019 2020 2021 2022 2023 2024 |
release_sock(sk); return err; } static int dn_device_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = (struct net_device *)ptr; |
721499e89 netns: Use net_eq... |
2025 |
if (!net_eq(dev_net(dev), &init_net)) |
e9dc86534 [NET]: Make devic... |
2026 |
return NOTIFY_DONE; |
06f8fe11b decnet: Reduce sw... |
2027 2028 2029 2030 2031 2032 2033 2034 2035 |
switch (event) { case NETDEV_UP: dn_dev_up(dev); break; case NETDEV_DOWN: dn_dev_down(dev); break; default: break; |
1da177e4c Linux-2.6.12-rc2 |
2036 2037 2038 2039 2040 2041 2042 2043 |
} return NOTIFY_DONE; } static struct notifier_block dn_dev_notifier = { .notifier_call = dn_device_event, }; |
f2ccd8fa0 [NET]: Kill skb->... |
2044 |
extern int dn_route_rcv(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *); |
1da177e4c Linux-2.6.12-rc2 |
2045 |
|
7546dd97d net: convert usag... |
2046 |
static struct packet_type dn_dix_packet_type __read_mostly = { |
09640e636 net: replace uses... |
2047 |
.type = cpu_to_be16(ETH_P_DNA_RT), |
1da177e4c Linux-2.6.12-rc2 |
2048 2049 2050 2051 2052 2053 2054 2055 2056 2057 2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 |
.func = dn_route_rcv, }; #ifdef CONFIG_PROC_FS struct dn_iter_state { int bucket; }; static struct sock *dn_socket_get_first(struct seq_file *seq) { struct dn_iter_state *state = seq->private; struct sock *n = NULL; for(state->bucket = 0; state->bucket < DN_SK_HASH_SIZE; ++state->bucket) { n = sk_head(&dn_sk_hash[state->bucket]); if (n) break; } return n; } static struct sock *dn_socket_get_next(struct seq_file *seq, struct sock *n) { struct dn_iter_state *state = seq->private; n = sk_next(n); try_again: if (n) goto out; if (++state->bucket >= DN_SK_HASH_SIZE) goto out; n = sk_head(&dn_sk_hash[state->bucket]); goto try_again; out: return n; } static struct sock *socket_get_idx(struct seq_file *seq, loff_t *pos) { struct sock *sk = dn_socket_get_first(seq); if (sk) { while(*pos && (sk = dn_socket_get_next(seq, sk))) --*pos; } return *pos ? NULL : sk; } static void *dn_socket_get_idx(struct seq_file *seq, loff_t pos) { void *rc; read_lock_bh(&dn_hash_lock); rc = socket_get_idx(seq, &pos); if (!rc) { read_unlock_bh(&dn_hash_lock); } return rc; } static void *dn_socket_seq_start(struct seq_file *seq, loff_t *pos) { return *pos ? dn_socket_get_idx(seq, *pos - 1) : SEQ_START_TOKEN; } static void *dn_socket_seq_next(struct seq_file *seq, void *v, loff_t *pos) { void *rc; if (v == SEQ_START_TOKEN) { rc = dn_socket_get_idx(seq, 0); goto out; } rc = dn_socket_get_next(seq, v); if (rc) goto out; read_unlock_bh(&dn_hash_lock); out: ++*pos; return rc; } static void dn_socket_seq_stop(struct seq_file *seq, void *v) { if (v && v != SEQ_START_TOKEN) read_unlock_bh(&dn_hash_lock); } #define IS_NOT_PRINTABLE(x) ((x) < 32 || (x) > 126) static void dn_printable_object(struct sockaddr_dn *dn, unsigned char *buf) { int i; |
429eb0fae [NET] DECNET: Fix... |
2145 |
|
c4106aa88 decnet: remove pr... |
2146 |
switch (le16_to_cpu(dn->sdn_objnamel)) { |
06f8fe11b decnet: Reduce sw... |
2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 |
case 0: sprintf(buf, "%d", dn->sdn_objnum); break; default: for (i = 0; i < le16_to_cpu(dn->sdn_objnamel); i++) { buf[i] = dn->sdn_objname[i]; if (IS_NOT_PRINTABLE(buf[i])) buf[i] = '.'; } buf[i] = 0; |
429eb0fae [NET] DECNET: Fix... |
2157 |
} |
1da177e4c Linux-2.6.12-rc2 |
2158 2159 2160 2161 |
} static char *dn_state2asc(unsigned char state) { |
06f8fe11b decnet: Reduce sw... |
2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 |
switch (state) { case DN_O: return "OPEN"; case DN_CR: return " CR"; case DN_DR: return " DR"; case DN_DRC: return " DRC"; case DN_CC: return " CC"; case DN_CI: return " CI"; case DN_NR: return " NR"; case DN_NC: return " NC"; case DN_CD: return " CD"; case DN_RJ: return " RJ"; case DN_RUN: return " RUN"; case DN_DI: return " DI"; case DN_DIC: return " DIC"; case DN_DN: return " DN"; case DN_CL: return " CL"; case DN_CN: return " CN"; |
1da177e4c Linux-2.6.12-rc2 |
2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 |
} return "????"; } static inline void dn_socket_format_entry(struct seq_file *seq, struct sock *sk) { struct dn_scp *scp = DN_SK(sk); char buf1[DN_ASCBUF_LEN]; char buf2[DN_ASCBUF_LEN]; char local_object[DN_MAXOBJL+3]; char remote_object[DN_MAXOBJL+3]; dn_printable_object(&scp->addr, local_object); dn_printable_object(&scp->peer, remote_object); seq_printf(seq, "%6s/%04X %04d:%04d %04d:%04d %01d %-16s " "%6s/%04X %04d:%04d %04d:%04d %01d %-16s %4s %s ", |
c4106aa88 decnet: remove pr... |
2215 |
dn_addr2asc(le16_to_cpu(dn_saddr2dn(&scp->addr)), buf1), |
1da177e4c Linux-2.6.12-rc2 |
2216 2217 2218 2219 2220 2221 2222 |
scp->addrloc, scp->numdat, scp->numoth, scp->ackxmt_dat, scp->ackxmt_oth, scp->flowloc_sw, local_object, |
c4106aa88 decnet: remove pr... |
2223 |
dn_addr2asc(le16_to_cpu(dn_saddr2dn(&scp->peer)), buf2), |
1da177e4c Linux-2.6.12-rc2 |
2224 2225 2226 2227 2228 2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 |
scp->addrrem, scp->numdat_rcv, scp->numoth_rcv, scp->ackrcv_dat, scp->ackrcv_oth, scp->flowrem_sw, remote_object, dn_state2asc(scp->state), ((scp->accept_mode == ACC_IMMED) ? "IMMED" : "DEFER")); } static int dn_socket_seq_show(struct seq_file *seq, void *v) { if (v == SEQ_START_TOKEN) { seq_puts(seq, "Local Remote "); } else { dn_socket_format_entry(seq, v); } return 0; } |
56b3d975b [NET]: Make all i... |
2245 |
static const struct seq_operations dn_socket_seq_ops = { |
1da177e4c Linux-2.6.12-rc2 |
2246 2247 2248 2249 2250 2251 2252 2253 |
.start = dn_socket_seq_start, .next = dn_socket_seq_next, .stop = dn_socket_seq_stop, .show = dn_socket_seq_show, }; static int dn_socket_seq_open(struct inode *inode, struct file *file) { |
c20932d2c [ATALK/DECNET]: U... |
2254 2255 |
return seq_open_private(file, &dn_socket_seq_ops, sizeof(struct dn_iter_state)); |
1da177e4c Linux-2.6.12-rc2 |
2256 |
} |
9a32144e9 [PATCH] mark stru... |
2257 |
static const struct file_operations dn_socket_seq_fops = { |
1da177e4c Linux-2.6.12-rc2 |
2258 2259 2260 2261 2262 2263 2264 |
.owner = THIS_MODULE, .open = dn_socket_seq_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release_private, }; #endif |
ec1b4cf74 net: mark net_pro... |
2265 |
static const struct net_proto_family dn_family_ops = { |
1da177e4c Linux-2.6.12-rc2 |
2266 2267 2268 2269 |
.family = AF_DECnet, .create = dn_create, .owner = THIS_MODULE, }; |
90ddc4f04 [NET]: move struc... |
2270 |
static const struct proto_ops dn_proto_ops = { |
1da177e4c Linux-2.6.12-rc2 |
2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 |
.family = AF_DECnet, .owner = THIS_MODULE, .release = dn_release, .bind = dn_bind, .connect = dn_connect, .socketpair = sock_no_socketpair, .accept = dn_accept, .getname = dn_getname, .poll = dn_poll, .ioctl = dn_ioctl, .listen = dn_listen, .shutdown = dn_shutdown, .setsockopt = dn_setsockopt, .getsockopt = dn_getsockopt, .sendmsg = dn_sendmsg, .recvmsg = dn_recvmsg, .mmap = sock_no_mmap, .sendpage = sock_no_sendpage, }; void dn_register_sysctl(void); void dn_unregister_sysctl(void); MODULE_DESCRIPTION("The Linux DECnet Network Protocol"); MODULE_AUTHOR("Linux DECnet Project Team"); MODULE_LICENSE("GPL"); MODULE_ALIAS_NETPROTO(PF_DECnet); static char banner[] __initdata = KERN_INFO "NET4: DECnet for Linux: V.2.5.68s (C) 1995-2003 Linux DECnet Project Team "; static int __init decnet_init(void) { int rc; |
429eb0fae [NET] DECNET: Fix... |
2305 |
printk(banner); |
1da177e4c Linux-2.6.12-rc2 |
2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 2318 |
rc = proto_register(&dn_proto, 1); if (rc != 0) goto out; dn_neigh_init(); dn_dev_init(); dn_route_init(); dn_fib_init(); sock_register(&dn_family_ops); dev_add_pack(&dn_dix_packet_type); register_netdevice_notifier(&dn_dev_notifier); |
457c4cbc5 [NET]: Make /proc... |
2319 |
proc_net_fops_create(&init_net, "decnet", S_IRUGO, &dn_socket_seq_fops); |
1da177e4c Linux-2.6.12-rc2 |
2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 |
dn_register_sysctl(); out: return rc; } module_init(decnet_init); /* * Prevent DECnet module unloading until its fixed properly. * Requires an audit of the code to check for memory leaks and * initialisation problems etc. */ #if 0 static void __exit decnet_exit(void) { sock_unregister(AF_DECnet); |
fa34ddd73 [DECNet]: Use rtn... |
2336 |
rtnl_unregister_all(PF_DECnet); |
1da177e4c Linux-2.6.12-rc2 |
2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 |
dev_remove_pack(&dn_dix_packet_type); dn_unregister_sysctl(); unregister_netdevice_notifier(&dn_dev_notifier); dn_route_cleanup(); dn_dev_cleanup(); dn_neigh_cleanup(); dn_fib_cleanup(); |
457c4cbc5 [NET]: Make /proc... |
2347 |
proc_net_remove(&init_net, "decnet"); |
1da177e4c Linux-2.6.12-rc2 |
2348 2349 |
proto_unregister(&dn_proto); |
10e854480 decnet: Use rcu_b... |
2350 2351 |
rcu_barrier_bh(); /* Wait for completion of call_rcu_bh()'s */ |
1da177e4c Linux-2.6.12-rc2 |
2352 2353 2354 |
} module_exit(decnet_exit); #endif |