1 files changed, 394 insertions, 399 deletions

diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index 2b494fac946..ae011b46c07 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -119,7 +119,6 @@ Version 0.0.6    2.1.110   07-aug-98   Eduardo Marcelo Serrat
 #include <net/sock.h>
 #include <net/tcp_states.h>
 #include <net/flow.h>
-#include <asm/system.h>
 #include <asm/ioctls.h>
 #include <linux/capability.h>
 #include <linux/mm.h>
@@ -155,7 +154,7 @@ static const struct proto_ops dn_proto_ops;
 static DEFINE_RWLOCK(dn_hash_lock);
 static struct hlist_head dn_sk_hash[DN_SK_HASH_SIZE];
 static struct hlist_head dn_wild_sk;
-static atomic_t decnet_memory_allocated;
+static atomic_long_t decnet_memory_allocated;
 
 static int __dn_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen, int flags);
 static int __dn_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen, int flags);
@@ -176,12 +175,11 @@ static struct hlist_head *dn_find_list(struct sock *sk)
 static int check_port(__le16 port)
 {
 	struct sock *sk;
-	struct hlist_node *node;
 
 	if (port == 0)
 		return -1;
 
-	sk_for_each(sk, node, &dn_sk_hash[le16_to_cpu(port) & DN_SK_HASH_MASK]) {
+	sk_for_each(sk, &dn_sk_hash[le16_to_cpu(port) & DN_SK_HASH_MASK]) {
 		struct dn_scp *scp = DN_SK(sk);
 		if (scp->addrloc == port)
 			return -1;
@@ -251,7 +249,7 @@ static void dn_unhash_sock_bh(struct sock *sk)
 static struct hlist_head *listen_hash(struct sockaddr_dn *addr)
 {
 	int i;
-	unsigned hash = addr->sdn_objnum;
+	unsigned int hash = addr->sdn_objnum;
 
 	if (hash == 0) {
 		hash = addr->sdn_objnamel;
@@ -291,23 +289,23 @@ int dn_sockaddr2username(struct sockaddr_dn *sdn, unsigned char *buf, unsigned c
 
 	*buf++ = type;
 
-	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;
+	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;
 	}
 
 	return len;
@@ -337,23 +335,23 @@ int dn_username2sockaddr(unsigned char *data, int len, struct sockaddr_dn *sdn,
 	*fmt = *data++;
 	type = *data++;
 
-	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;
+	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;
 	}
 
 	len -= 1;
@@ -375,11 +373,10 @@ int dn_username2sockaddr(unsigned char *data, int len, struct sockaddr_dn *sdn,
 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) {
+	sk_for_each(sk, list) {
 		struct dn_scp *scp = DN_SK(sk);
 		if (sk->sk_state != TCP_LISTEN)
 			continue;
@@ -415,11 +412,10 @@ 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);
-	sk_for_each(sk, node, &dn_sk_hash[le16_to_cpu(cb->dst_port) & DN_SK_HASH_MASK]) {
+	sk_for_each(sk, &dn_sk_hash[le16_to_cpu(cb->dst_port) & DN_SK_HASH_MASK]) {
 		scp = DN_SK(sk);
 		if (cb->src != dn_saddr2dn(&scp->peer))
 			continue;
@@ -446,7 +442,7 @@ static void dn_destruct(struct sock *sk)
 	skb_queue_purge(&scp->other_xmit_queue);
 	skb_queue_purge(&scp->other_receive_queue);
 
-	dst_release(xchg(&sk->sk_dst_cache, NULL));
+	dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
 }
 
 static int dn_memory_pressure;
@@ -485,7 +481,7 @@ static struct sock *dn_alloc_sock(struct net *net, struct socket *sock, gfp_t gf
 
 	sk->sk_backlog_rcv = dn_nsp_backlog_rcv;
 	sk->sk_destruct    = dn_destruct;
-	sk->sk_no_check    = 1;
+	sk->sk_no_check_tx = 1;
 	sk->sk_family      = PF_DECnet;
 	sk->sk_protocol    = 0;
 	sk->sk_allocation  = gfp;
@@ -575,25 +571,26 @@ int dn_destroy_timer(struct sock *sk)
 
 	scp->persist = dn_nsp_persist(sk);
 
-	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;
+	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;
 
-		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;
+	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;
 
-		case DN_DN:
-			if (scp->nsp_rxtshift < decnet_dn_count) {
-				/* printk(KERN_DEBUG "dn_destroy_timer: DN\n"); */
-				dn_nsp_send_disc(sk, NSP_DISCCONF, NSP_REASON_DC, GFP_ATOMIC);
-				return 0;
-			}
+	case DN_DN:
+		if (scp->nsp_rxtshift < decnet_dn_count) {
+			/* printk(KERN_DEBUG "dn_destroy_timer: DN\n"); */
+			dn_nsp_send_disc(sk, NSP_DISCCONF, NSP_REASON_DC,
+					 GFP_ATOMIC);
+			return 0;
+		}
 	}
 
 	scp->persist = (HZ * decnet_time_wait);
@@ -623,42 +620,42 @@ static void dn_destroy_sock(struct sock *sk)
 
 	sk->sk_state = TCP_CLOSE;
 
-	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:
+	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:
 disc_reject:
-			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\n");
-		case DN_O:
-			dn_stop_slow_timer(sk);
+		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\n");
+	case DN_O:
+		dn_stop_slow_timer(sk);
 
-			dn_unhash_sock_bh(sk);
-			sock_put(sk);
+		dn_unhash_sock_bh(sk);
+		sock_put(sk);
 
-			break;
+		break;
 	}
 }
 
@@ -683,15 +680,15 @@ static int dn_create(struct net *net, struct socket *sock, int protocol,
 	if (!net_eq(net, &init_net))
 		return -EAFNOSUPPORT;
 
-	switch(sock->type) {
-		case SOCK_SEQPACKET:
-			if (protocol != DNPROTO_NSP)
-				return -EPROTONOSUPPORT;
-			break;
-		case SOCK_STREAM:
-			break;
-		default:
-			return -ESOCKTNOSUPPORT;
+	switch (sock->type) {
+	case SOCK_SEQPACKET:
+		if (protocol != DNPROTO_NSP)
+			return -EPROTONOSUPPORT;
+		break;
+	case SOCK_STREAM:
+		break;
+	default:
+		return -ESOCKTNOSUPPORT;
 	}
 
 
@@ -829,10 +826,10 @@ static int dn_confirm_accept(struct sock *sk, long *timeo, gfp_t allocation)
 		return -EINVAL;
 
 	scp->state = DN_CC;
-	scp->segsize_loc = dst_metric(__sk_dst_get(sk), RTAX_ADVMSS);
+	scp->segsize_loc = dst_metric_advmss(__sk_dst_get(sk));
 	dn_send_conn_conf(sk, allocation);
 
-	prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+	prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
 	for(;;) {
 		release_sock(sk);
 		if (scp->state == DN_CC)
@@ -850,9 +847,9 @@ static int dn_confirm_accept(struct sock *sk, long *timeo, gfp_t allocation)
 		err = -EAGAIN;
 		if (!*timeo)
 			break;
-		prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+		prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
 	}
-	finish_wait(sk->sk_sleep, &wait);
+	finish_wait(sk_sleep(sk), &wait);
 	if (err == 0) {
 		sk->sk_socket->state = SS_CONNECTED;
 	} else if (scp->state != DN_CC) {
@@ -873,7 +870,7 @@ static int dn_wait_run(struct sock *sk, long *timeo)
 	if (!*timeo)
 		return -EALREADY;
 
-	prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+	prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
 	for(;;) {
 		release_sock(sk);
 		if (scp->state == DN_CI || scp->state == DN_CC)
@@ -891,9 +888,9 @@ static int dn_wait_run(struct sock *sk, long *timeo)
 		err = -ETIMEDOUT;
 		if (!*timeo)
 			break;
-		prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+		prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
 	}
-	finish_wait(sk->sk_sleep, &wait);
+	finish_wait(sk_sleep(sk), &wait);
 out:
 	if (err == 0) {
 		sk->sk_socket->state = SS_CONNECTED;
@@ -908,7 +905,8 @@ static int __dn_connect(struct sock *sk, struct sockaddr_dn *addr, int addrlen,
 	struct socket *sock = sk->sk_socket;
 	struct dn_scp *scp = DN_SK(sk);
 	int err = -EISCONN;
-	struct flowi fl;
+	struct flowidn fld;
+	struct dst_entry *dst;
 
 	if (sock->state == SS_CONNECTED)
 		goto out;
@@ -947,18 +945,19 @@ static int __dn_connect(struct sock *sk, struct sockaddr_dn *addr, int addrlen,
 	memcpy(&scp->peer, addr, sizeof(struct sockaddr_dn));
 
 	err = -EHOSTUNREACH;
-	memset(&fl, 0, sizeof(fl));
-	fl.oif = sk->sk_bound_dev_if;
-	fl.fld_dst = dn_saddr2dn(&scp->peer);
-	fl.fld_src = dn_saddr2dn(&scp->addr);
-	dn_sk_ports_copy(&fl, scp);
-	fl.proto = DNPROTO_NSP;
-	if (dn_route_output_sock(&sk->sk_dst_cache, &fl, sk, flags) < 0)
+	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)
 		goto out;
-	sk->sk_route_caps = sk->sk_dst_cache->dev->features;
+	dst = __sk_dst_get(sk);
+	sk->sk_route_caps = dst->dev->features;
 	sock->state = SS_CONNECTING;
 	scp->state = DN_CI;
-	scp->segsize_loc = dst_metric(sk->sk_dst_cache, RTAX_ADVMSS);
+	scp->segsize_loc = dst_metric_advmss(dst);
 
 	dn_nsp_send_conninit(sk, NSP_CI);
 	err = -EINPROGRESS;
@@ -987,16 +986,16 @@ static inline int dn_check_state(struct sock *sk, struct sockaddr_dn *addr, int
 {
 	struct dn_scp *scp = DN_SK(sk);
 
-	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);
+	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);
 	}
 
 	return -EINVAL;
@@ -1040,7 +1039,7 @@ static struct sk_buff *dn_wait_for_connect(struct sock *sk, long *timeo)
 	struct sk_buff *skb = NULL;
 	int err = 0;
 
-	prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+	prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
 	for(;;) {
 		release_sock(sk);
 		skb = skb_dequeue(&sk->sk_receive_queue);
@@ -1060,9 +1059,9 @@ static struct sk_buff *dn_wait_for_connect(struct sock *sk, long *timeo)
 		err = -EAGAIN;
 		if (!*timeo)
 			break;
-		prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+		prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
 	}
-	finish_wait(sk->sk_sleep, &wait);
+	finish_wait(sk_sleep(sk), &wait);
 
 	return skb == NULL ? ERR_PTR(err) : skb;
 }
@@ -1105,7 +1104,7 @@ static int dn_accept(struct socket *sock, struct socket *newsock, int flags)
 	release_sock(sk);
 
 	dst = skb_dst(skb);
-	dst_release(xchg(&newsk->sk_dst_cache, dst));
+	sk_dst_set(newsk, dst);
 	skb_dst_set(skb, NULL);
 
 	DN_SK(newsk)->state        = DN_CR;
@@ -1313,10 +1312,10 @@ static int dn_shutdown(struct socket *sock, int how)
 	if (scp->state == DN_O)
 		goto out;
 
-	if (how != SHUTDOWN_MASK)
+	if (how != SHUT_RDWR)
 		goto out;
 
-	sk->sk_shutdown = how;
+	sk->sk_shutdown = SHUTDOWN_MASK;
 	dn_destroy_sock(sk);
 	err = 0;
 
@@ -1363,141 +1362,140 @@ static int __dn_setsockopt(struct socket *sock, int level,int optname, char __us
 	if (copy_from_user(&u, optval, optlen))
 		return -EFAULT;
 
-	switch(optname) {
-		case DSO_CONDATA:
-			if (sock->state == SS_CONNECTED)
-				return -EISCONN;
-			if ((scp->state != DN_O) && (scp->state != DN_CR))
-				return -EINVAL;
+	switch (optname) {
+	case DSO_CONDATA:
+		if (sock->state == SS_CONNECTED)
+			return -EISCONN;
+		if ((scp->state != DN_O) && (scp->state != DN_CR))
+			return -EINVAL;
 
-			if (optlen != sizeof(struct optdata_dn))
-				return -EINVAL;
+		if (optlen != sizeof(struct optdata_dn))
+			return -EINVAL;
 
-			if (le16_to_cpu(u.opt.opt_optl) > 16)
-				return -EINVAL;
+		if (le16_to_cpu(u.opt.opt_optl) > 16)
+			return -EINVAL;
 
-			memcpy(&scp->conndata_out, &u.opt, optlen);
-			break;
-
-		case DSO_DISDATA:
-			if (sock->state != SS_CONNECTED && scp->accept_mode == ACC_IMMED)
-				return -ENOTCONN;
-
-			if (optlen != sizeof(struct optdata_dn))
-				return -EINVAL;
+		memcpy(&scp->conndata_out, &u.opt, optlen);
+		break;
 
-			if (le16_to_cpu(u.opt.opt_optl) > 16)
-				return -EINVAL;
+	case DSO_DISDATA:
+		if (sock->state != SS_CONNECTED &&
+		    scp->accept_mode == ACC_IMMED)
+			return -ENOTCONN;
 
-			memcpy(&scp->discdata_out, &u.opt, optlen);
-			break;
+		if (optlen != sizeof(struct optdata_dn))
+			return -EINVAL;
 
-		case DSO_CONACCESS:
-			if (sock->state == SS_CONNECTED)
-				return -EISCONN;
-			if (scp->state != DN_O)
-				return -EINVAL;
+		if (le16_to_cpu(u.opt.opt_optl) > 16)
+			return -EINVAL;
 
-			if (optlen != sizeof(struct accessdata_dn))
-				return -EINVAL;
+		memcpy(&scp->discdata_out, &u.opt, optlen);
+		break;
 
-			if ((u.acc.acc_accl > DN_MAXACCL) ||
-					(u.acc.acc_passl > DN_MAXACCL) ||
-					(u.acc.acc_userl > DN_MAXACCL))
-				return -EINVAL;
+	case DSO_CONACCESS:
+		if (sock->state == SS_CONNECTED)
+			return -EISCONN;
+		if (scp->state != DN_O)
+			return -EINVAL;
 
-			memcpy(&scp->accessdata, &u.acc, optlen);
-			break;
+		if (optlen != sizeof(struct accessdata_dn))
+			return -EINVAL;
 
-		case DSO_ACCEPTMODE:
-			if (sock->state == SS_CONNECTED)
-				return -EISCONN;
-			if (scp->state != DN_O)
-				return -EINVAL;
+		if ((u.acc.acc_accl > DN_MAXACCL) ||
+		    (u.acc.acc_passl > DN_MAXACCL) ||
+		    (u.acc.acc_userl > DN_MAXACCL))
+			return -EINVAL;
 
-			if (optlen != sizeof(int))
-				return -EINVAL;
+		memcpy(&scp->accessdata, &u.acc, optlen);
+		break;
 
-			if ((u.mode != ACC_IMMED) && (u.mode != ACC_DEFER))
-				return -EINVAL;
+	case DSO_ACCEPTMODE:
+		if (sock->state == SS_CONNECTED)
+			return -EISCONN;
+		if (scp->state != DN_O)
+			return -EINVAL;
 
-			scp->accept_mode = (unsigned char)u.mode;
-			break;
+		if (optlen != sizeof(int))
+			return -EINVAL;
 
-		case DSO_CONACCEPT:
+		if ((u.mode != ACC_IMMED) && (u.mode != ACC_DEFER))
+			return -EINVAL;
 
-			if (scp->state != DN_CR)
-				return -EINVAL;
-			timeo = sock_rcvtimeo(sk, 0);
-			err = dn_confirm_accept(sk, &timeo, sk->sk_allocation);
-			return err;
+		scp->accept_mode = (unsigned char)u.mode;
+		break;
 
-		case DSO_CONREJECT:
+	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;
 
-			if (scp->state != DN_CR)
-				return -EINVAL;
+	case DSO_CONREJECT:
+		if (scp->state != DN_CR)
+			return -EINVAL;
 
-			scp->state = DN_DR;
-			sk->sk_shutdown = SHUTDOWN_MASK;
-			dn_nsp_send_disc(sk, 0x38, 0, sk->sk_allocation);
-			break;
+		scp->state = DN_DR;
+		sk->sk_shutdown = SHUTDOWN_MASK;
+		dn_nsp_send_disc(sk, 0x38, 0, sk->sk_allocation);
+		break;
 
-		default:
+	default:
 #ifdef CONFIG_NETFILTER
 		return nf_setsockopt(sk, PF_DECnet, optname, optval, optlen);
 #endif
-		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;
+	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;
 
-		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;
+	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;
 
-		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;
+	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;
 
-		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;
+	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;
 
-		case DSO_INFO:
-			if (optlen != sizeof(unsigned char))
-				return -EINVAL;
-			if (u.info & 0xfc)
-				return -EINVAL;
-			scp->info_loc = u.info;
-			break;
+	case DSO_INFO:
+		if (optlen != sizeof(unsigned char))
+			return -EINVAL;
+		if (u.info & 0xfc)
+			return -EINVAL;
+		scp->info_loc = u.info;
+		break;
 	}
 
 	return 0;
@@ -1527,105 +1525,106 @@ static int __dn_getsockopt(struct socket *sock, int level,int optname, char __us
 	if(get_user(r_len , optlen))
 		return -EFAULT;
 
-	switch(optname) {
-		case DSO_CONDATA:
-			if (r_len > sizeof(struct optdata_dn))
-				r_len = sizeof(struct optdata_dn);
-			r_data = &scp->conndata_in;
-			break;
+	switch (optname) {
+	case DSO_CONDATA:
+		if (r_len > sizeof(struct optdata_dn))
+			r_len = sizeof(struct optdata_dn);
+		r_data = &scp->conndata_in;
+		break;
 
-		case DSO_DISDATA:
-			if (r_len > sizeof(struct optdata_dn))
-				r_len = sizeof(struct optdata_dn);
-			r_data = &scp->discdata_in;
-			break;
+	case DSO_DISDATA:
+		if (r_len > sizeof(struct optdata_dn))
+			r_len = sizeof(struct optdata_dn);
+		r_data = &scp->discdata_in;
+		break;
 
-		case DSO_CONACCESS:
-			if (r_len > sizeof(struct accessdata_dn))
-				r_len = sizeof(struct accessdata_dn);
-			r_data = &scp->accessdata;
-			break;
+	case DSO_CONACCESS:
+		if (r_len > sizeof(struct accessdata_dn))
+			r_len = sizeof(struct accessdata_dn);
+		r_data = &scp->accessdata;
+		break;
 
-		case DSO_ACCEPTMODE:
-			if (r_len > sizeof(unsigned char))
-				r_len = sizeof(unsigned char);
-			r_data = &scp->accept_mode;
-			break;
+	case DSO_ACCEPTMODE:
+		if (r_len > sizeof(unsigned char))
+			r_len = sizeof(unsigned char);
+		r_data = &scp->accept_mode;
+		break;
 
-		case DSO_LINKINFO:
-			if (r_len > sizeof(struct linkinfo_dn))
-				r_len = sizeof(struct linkinfo_dn);
+	case DSO_LINKINFO:
+		if (r_len > sizeof(struct linkinfo_dn))
+			r_len = sizeof(struct linkinfo_dn);
 
-			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;
-					break;
-				default:
-					link.idn_linkstate = LL_INACTIVE;
-			}
+		memset(&link, 0, sizeof(link));
 
-			link.idn_segsize = scp->segsize_rem;
-			r_data = &link;
+		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;
 			break;
-
 		default:
+			link.idn_linkstate = LL_INACTIVE;
+		}
+
+		link.idn_segsize = scp->segsize_rem;
+		r_data = &link;
+		break;
+
+	default:
 #ifdef CONFIG_NETFILTER
-		{
-			int ret, len;
+	{
+		int ret, len;
 
-			if(get_user(len, optlen))
-				return -EFAULT;
+		if (get_user(len, optlen))
+			return -EFAULT;
 
-			ret = nf_getsockopt(sk, PF_DECnet, optname,
-							optval, &len);
-			if (ret >= 0)
-				ret = put_user(len, optlen);
-			return ret;
-		}
+		ret = nf_getsockopt(sk, PF_DECnet, optname, optval, &len);
+		if (ret >= 0)
+			ret = put_user(len, optlen);
+		return ret;
+	}
 #endif
-		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;
+	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;
 
-		case DSO_NODELAY:
-			if (r_len > sizeof(int))
-				r_len = sizeof(int);
-			val = (scp->nonagle == 1);
-			r_data = &val;
-			break;
+	case DSO_NODELAY:
+		if (r_len > sizeof(int))
+			r_len = sizeof(int);
+		val = (scp->nonagle == 1);
+		r_data = &val;
+		break;
 
-		case DSO_CORK:
-			if (r_len > sizeof(int))
-				r_len = sizeof(int);
-			val = (scp->nonagle == 2);
-			r_data = &val;
-			break;
+	case DSO_CORK:
+		if (r_len > sizeof(int))
+			r_len = sizeof(int);
+		val = (scp->nonagle == 2);
+		r_data = &val;
+		break;
 
-		case DSO_SERVICES:
-			if (r_len > sizeof(unsigned char))
-				r_len = sizeof(unsigned char);
-			r_data = &scp->services_rem;
-			break;
+	case DSO_SERVICES:
+		if (r_len > sizeof(unsigned char))
+			r_len = sizeof(unsigned char);
+		r_data = &scp->services_rem;
+		break;
 
-		case DSO_INFO:
-			if (r_len > sizeof(unsigned char))
-				r_len = sizeof(unsigned char);
-			r_data = &scp->info_rem;
-			break;
+	case DSO_INFO:
+		if (r_len > sizeof(unsigned char))
+			r_len = sizeof(unsigned char);
+		r_data = &scp->info_rem;
+		break;
 	}
 
 	if (r_data) {
@@ -1746,11 +1745,11 @@ static int dn_recvmsg(struct kiocb *iocb, struct socket *sock,
 			goto out;
 		}
 
-		prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+		prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
 		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);
-		finish_wait(sk->sk_sleep, &wait);
+		finish_wait(sk_sleep(sk), &wait);
 	}
 
 	skb_queue_walk_safe(queue, skb, n) {
@@ -1809,6 +1808,7 @@ out:
 		rv = (flags & MSG_PEEK) ? -sk->sk_err : sock_error(sk);
 
 	if ((rv >= 0) && msg->msg_name) {
+		__sockaddr_check_size(sizeof(struct sockaddr_dn));
 		memcpy(msg->msg_name, &scp->peer, sizeof(struct sockaddr_dn));
 		msg->msg_namelen = sizeof(struct sockaddr_dn);
 	}
@@ -1844,11 +1844,11 @@ static inline int dn_queue_too_long(struct dn_scp *scp, struct sk_buff_head *que
  * 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 int dn_mss_from_pmtu(struct net_device *dev, int mtu)
 {
-	unsigned mss = 230 - DN_MAX_NSP_DATA_HEADER;
+	unsigned int mss = 230 - DN_MAX_NSP_DATA_HEADER;
 	if (dev) {
-		struct dn_dev *dn_db = dev->dn_ptr;
+		struct dn_dev *dn_db = rcu_dereference_raw(dev->dn_ptr);
 		mtu -= LL_RESERVED_SPACE(dev);
 		if (dn_db->use_long)
 			mtu -= 21;
@@ -1915,7 +1915,7 @@ static int dn_sendmsg(struct kiocb *iocb, struct socket *sock,
 	int err = 0;
 	size_t sent = 0;
 	int addr_len = msg->msg_namelen;
-	struct sockaddr_dn *addr = (struct sockaddr_dn *)msg->msg_name;
+	DECLARE_SOCKADDR(struct sockaddr_dn *, addr, msg->msg_name);
 	struct sk_buff *skb = NULL;
 	struct dn_skb_cb *cb;
 	size_t len;
@@ -1956,7 +1956,7 @@ static int dn_sendmsg(struct kiocb *iocb, struct socket *sock,
 	}
 
 	if ((flags & MSG_TRYHARD) && sk->sk_dst_cache)
-		dst_negative_advice(&sk->sk_dst_cache, sk);
+		dst_negative_advice(sk);
 
 	mss = scp->segsize_rem;
 	fctype = scp->services_rem & NSP_FC_MASK;
@@ -2003,12 +2003,12 @@ static int dn_sendmsg(struct kiocb *iocb, struct socket *sock,
 				goto out;
 			}
 
-			prepare_to_wait(sk->sk_sleep, &wait, TASK_INTERRUPTIBLE);
+			prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
 			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);
-			finish_wait(sk->sk_sleep, &wait);
+			finish_wait(sk_sleep(sk), &wait);
 			continue;
 		}
 
@@ -2079,22 +2079,22 @@ out_err:
 }
 
 static int dn_device_event(struct notifier_block *this, unsigned long event,
-			void *ptr)
+			   void *ptr)
 {
-	struct net_device *dev = (struct net_device *)ptr;
+	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
 
 	if (!net_eq(dev_net(dev), &init_net))
 		return NOTIFY_DONE;
 
-	switch(event) {
-		case NETDEV_UP:
-			dn_dev_up(dev);
-			break;
-		case NETDEV_DOWN:
-			dn_dev_down(dev);
-			break;
-		default:
-			break;
+	switch (event) {
+	case NETDEV_UP:
+		dn_dev_up(dev);
+		break;
+	case NETDEV_DOWN:
+		dn_dev_down(dev);
+		break;
+	default:
+		break;
 	}
 
 	return NOTIFY_DONE;
@@ -2104,8 +2104,6 @@ static struct notifier_block dn_dev_notifier = {
 	.notifier_call = dn_device_event,
 };
 
-extern int dn_route_rcv(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *);
-
 static struct packet_type dn_dix_packet_type __read_mostly = {
 	.type =		cpu_to_be16(ETH_P_DNA_RT),
 	.func =		dn_route_rcv,
@@ -2207,54 +2205,54 @@ static void dn_printable_object(struct sockaddr_dn *dn, unsigned char *buf)
 	int i;
 
 	switch (le16_to_cpu(dn->sdn_objnamel)) {
-		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;
+	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;
 	}
 }
 
 static char *dn_state2asc(unsigned char state)
 {
-	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";
+	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";
 	}
 
 	return "????";
@@ -2353,9 +2351,6 @@ static const struct proto_ops dn_proto_ops = {
 	.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");
@@ -2382,7 +2377,7 @@ static int __init decnet_init(void)
 	dev_add_pack(&dn_dix_packet_type);
 	register_netdevice_notifier(&dn_dev_notifier);
 
-	proc_net_fops_create(&init_net, "decnet", S_IRUGO, &dn_socket_seq_fops);
+	proc_create("decnet", S_IRUGO, init_net.proc_net, &dn_socket_seq_fops);
 	dn_register_sysctl();
 out:
 	return rc;
@@ -2411,7 +2406,7 @@ static void __exit decnet_exit(void)
 	dn_neigh_cleanup();
 	dn_fib_cleanup();
 
-	proc_net_remove(&init_net, "decnet");
+	remove_proc_entry("decnet", init_net.proc_net);
 
 	proto_unregister(&dn_proto);