/******************************************************************************
(c) 1995-1998 E.M. Serrat emserrat@geocities.com
-
+
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
Version 0.0.1 2.0.30 01-dic-97 Eduardo Marcelo Serrat
(emserrat@geocities.com)
- First Development of DECnet Socket La-
+ First Development of DECnet Socket La-
yer for Linux. Only supports outgoing
connections.
Version 0.0.3 2.1.106 25-jun-98 Eduardo Marcelo Serrat
(emserrat@geocities.com)
_
- Added support for incoming connections
- so we can start developing server apps
- on Linux.
+ Added support for incoming connections
+ so we can start developing server apps
+ on Linux.
-
Module Support
Version 0.0.4 2.1.109 21-jul-98 Eduardo Marcelo Serrat
- (emserrat@geocities.com)
- _
- Added support for X11R6.4. Now we can
- use DECnet transport for X on Linux!!!
- -
+ (emserrat@geocities.com)
+ _
+ Added support for X11R6.4. Now we can
+ use DECnet transport for X on Linux!!!
+ -
Version 0.0.5 2.1.110 01-aug-98 Eduardo Marcelo Serrat
- (emserrat@geocities.com)
- Removed bugs on flow control
- Removed bugs on incoming accessdata
- order
- -
+ (emserrat@geocities.com)
+ Removed bugs on flow control
+ Removed bugs on incoming accessdata
+ order
+ -
Version 0.0.6 2.1.110 07-aug-98 Eduardo Marcelo Serrat
- dn_recvmsg fixes
+ dn_recvmsg fixes
- Patrick J. Caulfield
- dn_bind fixes
+ Patrick J. Caulfield
+ dn_bind fixes
*******************************************************************************/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/netfilter.h>
#include <linux/seq_file.h>
#include <net/sock.h>
-#include <net/tcp.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>
#include <linux/interrupt.h>
#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/init.h>
#include <linux/poll.h>
+#include <net/net_namespace.h>
#include <net/neighbour.h>
#include <net/dst.h>
+#include <net/fib_rules.h>
#include <net/dn.h>
#include <net/dn_nsp.h>
#include <net/dn_dev.h>
#define DN_SK_HASH_MASK (DN_SK_HASH_SIZE - 1)
-static struct proto_ops dn_proto_ops;
+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 int __dn_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen, int flags);
static int __dn_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen, int flags);
if (scp->addr.sdn_flags & SDF_WILD)
return hlist_empty(&dn_wild_sk) ? &dn_wild_sk : NULL;
- return &dn_sk_hash[scp->addrloc & DN_SK_HASH_MASK];
+ return &dn_sk_hash[le16_to_cpu(scp->addrloc) & DN_SK_HASH_MASK];
}
-/*
+/*
* Valid ports are those greater than zero and not already in use.
*/
-static int check_port(unsigned short port)
+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[port & DN_SK_HASH_MASK]) {
+ sk_for_each(sk, node, &dn_sk_hash[le16_to_cpu(port) & DN_SK_HASH_MASK]) {
struct dn_scp *scp = DN_SK(sk);
if (scp->addrloc == port)
return -1;
static unsigned short port = 0x2000;
unsigned short i_port = port;
- while(check_port(++port) != 0) {
+ while(check_port(cpu_to_le16(++port)) != 0) {
if (port == i_port)
return 0;
}
- scp->addrloc = port;
+ scp->addrloc = cpu_to_le16(port);
return 1;
}
BUG_ON(sk_hashed(sk));
write_lock_bh(&dn_hash_lock);
-
+
if (!scp->addrloc && !port_alloc(sk))
goto out;
if (hash == 0) {
hash = addr->sdn_objnamel;
- for(i = 0; i < dn_ntohs(addr->sdn_objnamel); i++) {
+ for(i = 0; i < le16_to_cpu(addr->sdn_objnamel); i++) {
hash ^= addr->sdn_objname[i];
hash ^= (hash << 3);
}
break;
case 1:
*buf++ = 0;
- *buf++ = dn_ntohs(sdn->sdn_objnamel);
- memcpy(buf, sdn->sdn_objname, dn_ntohs(sdn->sdn_objnamel));
- len = 3 + dn_ntohs(sdn->sdn_objnamel);
+ *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++ = dn_ntohs(sdn->sdn_objnamel);
- memcpy(buf, sdn->sdn_objname, dn_ntohs(sdn->sdn_objnamel));
- len = 7 + dn_ntohs(sdn->sdn_objnamel);
+ *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;
}
int namel = 12;
sdn->sdn_objnum = 0;
- sdn->sdn_objnamel = dn_htons(0);
+ sdn->sdn_objnamel = cpu_to_le16(0);
memset(sdn->sdn_objname, 0, DN_MAXOBJL);
if (len < 2)
if (len < 0)
return -1;
- sdn->sdn_objnamel = dn_htons(*data++);
- len -= dn_ntohs(sdn->sdn_objnamel);
+ sdn->sdn_objnamel = cpu_to_le16(*data++);
+ len -= le16_to_cpu(sdn->sdn_objnamel);
- if ((len < 0) || (dn_ntohs(sdn->sdn_objnamel) > namel))
+ if ((len < 0) || (le16_to_cpu(sdn->sdn_objnamel) > namel))
return -1;
- memcpy(sdn->sdn_objname, data, dn_ntohs(sdn->sdn_objnamel));
+ memcpy(sdn->sdn_objname, data, le16_to_cpu(sdn->sdn_objnamel));
return size - len;
}
continue;
if (scp->addr.sdn_objnamel != addr->sdn_objnamel)
continue;
- if (memcmp(scp->addr.sdn_objname, addr->sdn_objname, dn_ntohs(addr->sdn_objnamel)) != 0)
+ if (memcmp(scp->addr.sdn_objname, addr->sdn_objname, le16_to_cpu(addr->sdn_objnamel)) != 0)
continue;
}
sock_hold(sk);
sk = sk_head(&dn_wild_sk);
if (sk) {
- if (sk->sk_state == TCP_LISTEN)
+ if (sk->sk_state == TCP_LISTEN)
sock_hold(sk);
else
sk = NULL;
struct dn_scp *scp;
read_lock(&dn_hash_lock);
- sk_for_each(sk, node, &dn_sk_hash[cb->dst_port & DN_SK_HASH_MASK]) {
+ sk_for_each(sk, node, &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;
dst_release(xchg(&sk->sk_dst_cache, NULL));
}
+static int dn_memory_pressure;
+
+static void dn_enter_memory_pressure(struct sock *sk)
+{
+ if (!dn_memory_pressure) {
+ dn_memory_pressure = 1;
+ }
+}
+
static struct proto dn_proto = {
- .name = "DECNET",
- .owner = THIS_MODULE,
- .obj_size = sizeof(struct dn_sock),
+ .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),
};
-static struct sock *dn_alloc_sock(struct socket *sock, int gfp)
+static struct sock *dn_alloc_sock(struct net *net, struct socket *sock, gfp_t gfp)
{
struct dn_scp *scp;
- struct sock *sk = sk_alloc(PF_DECnet, gfp, &dn_proto, 1);
+ struct sock *sk = sk_alloc(net, PF_DECnet, gfp, &dn_proto);
if (!sk)
goto out;
sk->sk_family = PF_DECnet;
sk->sk_protocol = 0;
sk->sk_allocation = gfp;
+ sk->sk_sndbuf = sysctl_decnet_wmem[1];
+ sk->sk_rcvbuf = sysctl_decnet_rmem[1];
/* Initialization of DECnet Session Control Port */
scp = DN_SK(sk);
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*/
- scp->flowrem_sw = DN_SEND;
+ scp->flowrem_sw = DN_SEND;
scp->flowloc_sw = DN_SEND;
scp->flowrem_dat = 0;
scp->flowrem_oth = 1;
}
}
-char *dn_addr2asc(dn_address addr, char *buf)
+char *dn_addr2asc(__u16 addr, char *buf)
{
unsigned short node, area;
-static int dn_create(struct socket *sock, int protocol)
+static int dn_create(struct net *net, struct socket *sock, int protocol)
{
struct sock *sk;
+ if (net != &init_net)
+ return -EAFNOSUPPORT;
+
switch(sock->type) {
case SOCK_SEQPACKET:
if (protocol != DNPROTO_NSP)
}
- if ((sk = dn_alloc_sock(sock, GFP_KERNEL)) == NULL)
+ if ((sk = dn_alloc_sock(net, sock, GFP_KERNEL)) == NULL)
return -ENOBUFS;
sk->sk_protocol = protocol;
sock_put(sk);
}
- return 0;
+ return 0;
}
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;
- struct net_device *dev;
+ struct net_device *dev, *ldev;
int rv;
if (addr_len != sizeof(struct sockaddr_dn))
if (saddr->sdn_family != AF_DECnet)
return -EINVAL;
- if (dn_ntohs(saddr->sdn_nodeaddrl) && (dn_ntohs(saddr->sdn_nodeaddrl) != 2))
+ if (le16_to_cpu(saddr->sdn_nodeaddrl) && (le16_to_cpu(saddr->sdn_nodeaddrl) != 2))
return -EINVAL;
- if (dn_ntohs(saddr->sdn_objnamel) > DN_MAXOBJL)
+ if (le16_to_cpu(saddr->sdn_objnamel) > DN_MAXOBJL)
return -EINVAL;
if (saddr->sdn_flags & ~SDF_WILD)
return -EINVAL;
-#if 1
if (!capable(CAP_NET_BIND_SERVICE) && (saddr->sdn_objnum ||
(saddr->sdn_flags & SDF_WILD)))
return -EACCES;
-#else
- /*
- * Maybe put the default actions in the default security ops for
- * dn_prot_sock ? Would be nice if the capable call would go there
- * too.
- */
- if (security_dn_prot_sock(saddr) &&
- !capable(CAP_NET_BIND_SERVICE) ||
- saddr->sdn_objnum || (saddr->sdn_flags & SDF_WILD))
- return -EACCES;
-#endif
-
if (!(saddr->sdn_flags & SDF_WILD)) {
- if (dn_ntohs(saddr->sdn_nodeaddrl)) {
+ if (le16_to_cpu(saddr->sdn_nodeaddrl)) {
read_lock(&dev_base_lock);
- for(dev = dev_base; dev; dev = dev->next) {
+ ldev = NULL;
+ for_each_netdev(&init_net, dev) {
if (!dev->dn_ptr)
continue;
- if (dn_dev_islocal(dev, dn_saddr2dn(saddr)))
+ if (dn_dev_islocal(dev, dn_saddr2dn(saddr))) {
+ ldev = dev;
break;
+ }
}
read_unlock(&dev_base_lock);
- if (dev == NULL)
+ if (ldev == NULL)
return -EADDRNOTAVAIL;
}
}
}
release_sock(sk);
- return rv;
+ return rv;
}
*/
if ((scp->accessdata.acc_accl != 0) &&
(scp->accessdata.acc_accl <= 12)) {
-
- scp->addr.sdn_objnamel = dn_htons(scp->accessdata.acc_accl);
- memcpy(scp->addr.sdn_objname, scp->accessdata.acc_acc, dn_ntohs(scp->addr.sdn_objnamel));
+
+ 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));
scp->accessdata.acc_accl = 0;
memset(scp->accessdata.acc_acc, 0, 40);
}
/* End of compatibility stuff */
- scp->addr.sdn_add.a_len = dn_htons(2);
- rv = dn_dev_bind_default((dn_address *)scp->addr.sdn_add.a_addr);
+ scp->addr.sdn_add.a_len = cpu_to_le16(2);
+ rv = dn_dev_bind_default((__le16 *)scp->addr.sdn_add.a_addr);
if (rv == 0) {
rv = dn_hash_sock(sk);
if (rv)
return rv;
}
-static int dn_confirm_accept(struct sock *sk, long *timeo, int allocation)
+static int dn_confirm_accept(struct sock *sk, long *timeo, gfp_t allocation)
{
struct dn_scp *scp = DN_SK(sk);
DEFINE_WAIT(wait);
static void dn_access_copy(struct sk_buff *skb, struct accessdata_dn *acc)
{
- unsigned char *ptr = skb->data;
+ unsigned char *ptr = skb->data;
- acc->acc_userl = *ptr++;
- memcpy(&acc->acc_user, ptr, acc->acc_userl);
- ptr += acc->acc_userl;
+ acc->acc_userl = *ptr++;
+ memcpy(&acc->acc_user, ptr, acc->acc_userl);
+ ptr += acc->acc_userl;
- acc->acc_passl = *ptr++;
- memcpy(&acc->acc_pass, ptr, acc->acc_passl);
- ptr += acc->acc_passl;
+ acc->acc_passl = *ptr++;
+ memcpy(&acc->acc_pass, ptr, acc->acc_passl);
+ ptr += acc->acc_passl;
- acc->acc_accl = *ptr++;
- memcpy(&acc->acc_acc, ptr, acc->acc_accl);
+ acc->acc_accl = *ptr++;
+ memcpy(&acc->acc_acc, ptr, acc->acc_accl);
- skb_pull(skb, acc->acc_accl + acc->acc_passl + acc->acc_userl + 3);
+ skb_pull(skb, acc->acc_accl + acc->acc_passl + acc->acc_userl + 3);
}
static void dn_user_copy(struct sk_buff *skb, struct optdata_dn *opt)
{
- unsigned char *ptr = skb->data;
-
- opt->opt_optl = *ptr++;
- opt->opt_status = 0;
- memcpy(opt->opt_data, ptr, opt->opt_optl);
- skb_pull(skb, opt->opt_optl + 1);
-
+ 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 */
+ opt->opt_optl = cpu_to_le16(len);
+ opt->opt_status = 0;
+ memcpy(opt->opt_data, ptr, len);
+ skb_pull(skb, len + 1);
}
static struct sk_buff *dn_wait_for_connect(struct sock *sk, long *timeo)
int err = 0;
unsigned char type;
long timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
+ struct dst_entry *dst;
lock_sock(sk);
- if (sk->sk_state != TCP_LISTEN || DN_SK(sk)->state != DN_O) {
+ if (sk->sk_state != TCP_LISTEN || DN_SK(sk)->state != DN_O) {
release_sock(sk);
return -EINVAL;
}
cb = DN_SKB_CB(skb);
sk->sk_ack_backlog--;
- newsk = dn_alloc_sock(newsock, sk->sk_allocation);
+ newsk = dn_alloc_sock(sock_net(sk), newsock, sk->sk_allocation);
if (newsk == NULL) {
release_sock(sk);
kfree_skb(skb);
}
release_sock(sk);
- dst_release(xchg(&newsk->sk_dst_cache, skb->dst));
- skb->dst = NULL;
+ dst = skb_dst(skb);
+ dst_release(xchg(&newsk->sk_dst_cache, dst));
+ skb_dst_set(skb, NULL);
- DN_SK(newsk)->state = DN_CR;
+ DN_SK(newsk)->state = DN_CR;
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;
-
+
if (DN_SK(newsk)->segsize_rem < 230)
DN_SK(newsk)->segsize_rem = 230;
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));
- *(dn_address *)(DN_SK(newsk)->peer.sdn_add.a_addr) = cb->src;
- *(dn_address *)(DN_SK(newsk)->addr.sdn_add.a_addr) = cb->dst;
+ *(__le16 *)(DN_SK(newsk)->peer.sdn_add.a_addr) = cb->src;
+ *(__le16 *)(DN_SK(newsk)->addr.sdn_add.a_addr) = cb->dst;
menuver = *skb->data;
skb_pull(skb, 1);
dn_send_conn_ack(newsk);
/*
- * Here we use sk->sk_allocation since although the conn conf is
- * for the newsk, the context is the old socket.
- */
+ * Here we use sk->sk_allocation since although the conn conf is
+ * for the newsk, the context is the old socket.
+ */
if (DN_SK(newsk)->accept_mode == ACC_IMMED)
err = dn_confirm_accept(newsk, &timeo,
sk->sk_allocation);
}
release_sock(newsk);
- return err;
+ return err;
}
lock_sock(sk);
if (peer) {
- if ((sock->state != SS_CONNECTED &&
- sock->state != SS_CONNECTING) &&
- scp->accept_mode == ACC_IMMED)
+ if ((sock->state != SS_CONNECTED &&
+ sock->state != SS_CONNECTING) &&
+ scp->accept_mode == ACC_IMMED) {
+ release_sock(sk);
return -ENOTCONN;
+ }
memcpy(sa, &scp->peer, sizeof(struct sockaddr_dn));
} else {
release_sock(sk);
- return 0;
+ return 0;
}
case TIOCINQ:
lock_sock(sk);
- if ((skb = skb_peek(&scp->other_receive_queue)) != NULL) {
+ skb = skb_peek(&scp->other_receive_queue);
+ if (skb) {
amount = skb->len;
} else {
- struct sk_buff *skb = sk->sk_receive_queue.next;
- for(;;) {
- if (skb ==
- (struct sk_buff *)&sk->sk_receive_queue)
- break;
+ skb_queue_walk(&sk->sk_receive_queue, skb)
amount += skb->len;
- skb = skb->next;
- }
}
release_sock(sk);
err = put_user(amount, (int __user *)arg);
break;
default:
- err = dev_ioctl(cmd, (void __user *)arg);
+ err = -ENOIOCTLCMD;
break;
}
out:
release_sock(sk);
- return err;
+ return err;
}
return err;
}
-static int __dn_setsockopt(struct socket *sock, int level,int optname, char __user *optval, int optlen, int flags)
+static int __dn_setsockopt(struct socket *sock, int level,int optname, char __user *optval, int optlen, int flags)
{
struct sock *sk = sock->sk;
struct dn_scp *scp = DN_SK(sk);
switch(optname) {
case DSO_CONDATA:
- if (sock->state == SS_CONNECTED)
+ 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 (u.opt.opt_optl > 16)
+ 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)
+ if (sock->state != SS_CONNECTED && scp->accept_mode == ACC_IMMED)
return -ENOTCONN;
if (optlen != sizeof(struct optdata_dn))
return -EINVAL;
- if (u.opt.opt_optl > 16)
+ if (le16_to_cpu(u.opt.opt_optl) > 16)
return -EINVAL;
memcpy(&scp->discdata_out, &u.opt, optlen);
break;
case DSO_CONACCESS:
- if (sock->state == SS_CONNECTED)
+ if (sock->state == SS_CONNECTED)
return -EISCONN;
if (scp->state != DN_O)
return -EINVAL;
if(get_user(r_len , optlen))
return -EFAULT;
-
+
switch(optname) {
case DSO_CONDATA:
if (r_len > sizeof(struct optdata_dn))
default:
#ifdef CONFIG_NETFILTER
{
- int val, len;
-
+ int ret, len;
+
if(get_user(len, optlen))
return -EFAULT;
-
- val = nf_getsockopt(sk, PF_DECnet, optname,
+
+ ret = nf_getsockopt(sk, PF_DECnet, optname,
optval, &len);
- if (val >= 0)
- val = put_user(len, optlen);
- return val;
+ 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;
+ return -ENOPROTOOPT;
case DSO_MAXWINDOW:
if (r_len > sizeof(unsigned long))
static int dn_data_ready(struct sock *sk, struct sk_buff_head *q, int flags, int target)
{
- struct sk_buff *skb = q->next;
+ struct sk_buff *skb;
int len = 0;
if (flags & MSG_OOB)
return !skb_queue_empty(q) ? 1 : 0;
- while(skb != (struct sk_buff *)q) {
+ skb_queue_walk(q, skb) {
struct dn_skb_cb *cb = DN_SKB_CB(skb);
len += skb->len;
/* minimum data length for read exceeded */
if (len >= target)
return 1;
-
- skb = skb->next;
}
return 0;
size_t target = size > 1 ? 1 : 0;
size_t copied = 0;
int rv = 0;
- struct sk_buff *skb, *nskb;
+ struct sk_buff *skb, *n;
struct dn_skb_cb *cb = NULL;
unsigned char eor = 0;
long timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT);
goto out;
}
- rv = dn_check_state(sk, NULL, 0, &timeo, flags);
- if (rv)
- goto out;
-
if (sk->sk_shutdown & RCV_SHUTDOWN) {
- if (!(flags & MSG_NOSIGNAL))
- send_sig(SIGPIPE, current, 0);
- rv = -EPIPE;
+ rv = 0;
goto out;
}
- if (flags & ~(MSG_PEEK|MSG_OOB|MSG_WAITALL|MSG_DONTWAIT|MSG_NOSIGNAL)) {
+ rv = dn_check_state(sk, NULL, 0, &timeo, flags);
+ if (rv)
+ goto out;
+
+ if (flags & ~(MSG_CMSG_COMPAT|MSG_PEEK|MSG_OOB|MSG_WAITALL|MSG_DONTWAIT|MSG_NOSIGNAL)) {
rv = -EOPNOTSUPP;
goto out;
}
* See if there is data ready to read, sleep if there isn't
*/
for(;;) {
+ DEFINE_WAIT(wait);
+
if (sk->sk_err)
goto out;
}
}
}
-
+
if (scp->state != DN_RUN)
goto out;
goto out;
}
- set_bit(SOCK_ASYNC_WAITDATA, &sock->flags);
- SOCK_SLEEP_PRE(sk)
-
- if (!dn_data_ready(sk, queue, flags, target))
- schedule();
-
- SOCK_SLEEP_POST(sk)
- clear_bit(SOCK_ASYNC_WAITDATA, &sock->flags);
+ prepare_to_wait(sk->sk_sleep, &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);
}
- for(skb = queue->next; skb != (struct sk_buff *)queue; skb = nskb) {
+ skb_queue_walk_safe(queue, skb, n) {
unsigned int chunk = skb->len;
cb = DN_SKB_CB(skb);
skb_pull(skb, chunk);
eor = cb->nsp_flags & 0x40;
- nskb = skb->next;
if (skb->len == 0) {
skb_unlink(skb, queue);
kfree_skb(skb);
- /*
+ /*
* N.B. Don't refer to skb or cb after this point
* in loop.
*/
}
}
- if (eor) {
+ if (eor) {
if (sk->sk_type == SOCK_SEQPACKET)
break;
if (!(flags & MSG_WAITALL))
}
/*
- * The DECnet spec requires the the "routing layer" accepts packets which
+ * The DECnet spec requires that the "routing layer" accepts packets which
* 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
return mss_now;
}
+/*
+ * 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) {
+ skb->protocol = htons(ETH_P_DNA_RT);
+ skb->pkt_type = PACKET_OUTGOING;
+ }
+ return skb;
+}
+
static int dn_sendmsg(struct kiocb *iocb, struct socket *sock,
- struct msghdr *msg, size_t size)
+ struct msghdr *msg, size_t size)
{
struct sock *sk = sock->sk;
struct dn_scp *scp = DN_SK(sk);
struct dn_skb_cb *cb;
size_t len;
unsigned char fctype;
- long timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT);
+ long timeo;
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;
+ lock_sock(sk);
+ timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT);
/*
* 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) {
- if (flags & MSG_EOR)
- return -EINVAL;
+ if (flags & MSG_EOR) {
+ err = -EINVAL;
+ goto out;
+ }
flags |= MSG_EOR;
}
- lock_sock(sk);
err = dn_check_state(sk, addr, addr_len, &timeo, flags);
if (err)
if (sk->sk_shutdown & SEND_SHUTDOWN) {
err = -EPIPE;
+ if (!(flags & MSG_NOSIGNAL))
+ send_sig(SIGPIPE, current, 0);
goto out_err;
}
* size.
*/
if (dn_queue_too_long(scp, queue, flags)) {
+ DEFINE_WAIT(wait);
+
if (flags & MSG_DONTWAIT) {
err = -EWOULDBLOCK;
goto out;
}
- SOCK_SLEEP_PRE(sk)
-
- if (dn_queue_too_long(scp, queue, flags))
- schedule();
-
- SOCK_SLEEP_POST(sk)
-
+ prepare_to_wait(sk->sk_sleep, &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);
continue;
}
/*
* Get a suitably sized skb.
+ * 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.
*/
- skb = dn_alloc_send_skb(sk, &len, flags & MSG_DONTWAIT, timeo, &err);
+ skb = dn_alloc_send_pskb(sk, len + 64 + DN_MAX_NSP_DATA_HEADER,
+ flags & MSG_DONTWAIT, &err);
if (err)
break;
cb = DN_SKB_CB(skb);
- skb_reserve(skb, DN_MAX_NSP_DATA_HEADER);
+ skb_reserve(skb, 64 + DN_MAX_NSP_DATA_HEADER);
if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) {
err = -EFAULT;
cb->nsp_flags |= 0x20;
scp->seg_total += len;
-
+
if (((sent + len) == size) && (flags & MSG_EOR)) {
cb->nsp_flags |= 0x40;
scp->seg_total = 0;
}
out:
- if (skb)
- kfree_skb(skb);
+ kfree_skb(skb);
release_sock(sk);
{
struct net_device *dev = (struct net_device *)ptr;
+ if (!net_eq(dev_net(dev), &init_net))
+ return NOTIFY_DONE;
+
switch(event) {
case NETDEV_UP:
dn_dev_up(dev);
.notifier_call = dn_device_event,
};
-extern int dn_route_rcv(struct sk_buff *, struct net_device *, struct packet_type *);
+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 = {
- .type = __constant_htons(ETH_P_DNA_RT),
- .dev = NULL, /* All devices */
+static struct packet_type dn_dix_packet_type __read_mostly = {
+ .type = cpu_to_be16(ETH_P_DNA_RT),
.func = dn_route_rcv,
};
static void dn_printable_object(struct sockaddr_dn *dn, unsigned char *buf)
{
int i;
-
- switch (dn_ntohs(dn->sdn_objnamel)) {
+
+ switch (le16_to_cpu(dn->sdn_objnamel)) {
case 0:
sprintf(buf, "%d", dn->sdn_objnum);
break;
default:
- for (i = 0; i < dn_ntohs(dn->sdn_objnamel); i++) {
+ 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)
seq_printf(seq,
"%6s/%04X %04d:%04d %04d:%04d %01d %-16s "
"%6s/%04X %04d:%04d %04d:%04d %01d %-16s %4s %s\n",
- dn_addr2asc(dn_ntohs(dn_saddr2dn(&scp->addr)), buf1),
+ dn_addr2asc(le16_to_cpu(dn_saddr2dn(&scp->addr)), buf1),
scp->addrloc,
scp->numdat,
scp->numoth,
scp->ackxmt_oth,
scp->flowloc_sw,
local_object,
- dn_addr2asc(dn_ntohs(dn_saddr2dn(&scp->peer)), buf2),
+ dn_addr2asc(le16_to_cpu(dn_saddr2dn(&scp->peer)), buf2),
scp->addrrem,
scp->numdat_rcv,
scp->numoth_rcv,
return 0;
}
-static struct seq_operations dn_socket_seq_ops = {
+static const struct seq_operations dn_socket_seq_ops = {
.start = dn_socket_seq_start,
.next = dn_socket_seq_next,
.stop = dn_socket_seq_stop,
static int dn_socket_seq_open(struct inode *inode, struct file *file)
{
- struct seq_file *seq;
- int rc = -ENOMEM;
- struct dn_iter_state *s = kmalloc(sizeof(*s), GFP_KERNEL);
-
- if (!s)
- goto out;
-
- rc = seq_open(file, &dn_socket_seq_ops);
- if (rc)
- goto out_kfree;
-
- seq = file->private_data;
- seq->private = s;
- memset(s, 0, sizeof(*s));
-out:
- return rc;
-out_kfree:
- kfree(s);
- goto out;
+ return seq_open_private(file, &dn_socket_seq_ops,
+ sizeof(struct dn_iter_state));
}
-static struct file_operations dn_socket_seq_fops = {
+static const struct file_operations dn_socket_seq_fops = {
.owner = THIS_MODULE,
.open = dn_socket_seq_open,
.read = seq_read,
.owner = THIS_MODULE,
};
-static struct proto_ops dn_proto_ops = {
+static const struct proto_ops dn_proto_ops = {
.family = AF_DECnet,
.owner = THIS_MODULE,
.release = dn_release,
{
int rc;
- printk(banner);
+ printk(banner);
rc = proto_register(&dn_proto, 1);
if (rc != 0)
dev_add_pack(&dn_dix_packet_type);
register_netdevice_notifier(&dn_dev_notifier);
- proc_net_fops_create("decnet", S_IRUGO, &dn_socket_seq_fops);
+ proc_net_fops_create(&init_net, "decnet", S_IRUGO, &dn_socket_seq_fops);
dn_register_sysctl();
out:
return rc;
static void __exit decnet_exit(void)
{
sock_unregister(AF_DECnet);
+ rtnl_unregister_all(PF_DECnet);
dev_remove_pack(&dn_dix_packet_type);
dn_unregister_sysctl();
dn_neigh_cleanup();
dn_fib_cleanup();
- proc_net_remove("decnet");
+ proc_net_remove(&init_net, "decnet");
proto_unregister(&dn_proto);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff