ipx: move Novell IPX protocol support into staging

The Netware IPX protocol is very old and no one should still be using
it. It is time to move it into staging for a while and eventually
decommision it.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 341 insertions, 0 deletions

diff --git a/drivers/staging/ipx/ipx_proc.c b/drivers/staging/ipx/ipx_proc.c
new file mode 100644
index 000000000000..38a3d51d9ead
--- /dev/null
+++ b/drivers/staging/ipx/ipx_proc.c
@@ -0,0 +1,341 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *	IPX proc routines
+ *
+ * 	Copyright(C) Arnaldo Carvalho de Melo <acme@conectiva.com.br>, 2002
+ */
+
+#include <linux/init.h>
+#ifdef CONFIG_PROC_FS
+#include <linux/proc_fs.h>
+#include <linux/spinlock.h>
+#include <linux/seq_file.h>
+#include <linux/export.h>
+#include <net/net_namespace.h>
+#include <net/tcp_states.h>
+#include <net/ipx.h>
+
+static void *ipx_seq_interface_start(struct seq_file *seq, loff_t *pos)
+{
+	spin_lock_bh(&ipx_interfaces_lock);
+	return seq_list_start_head(&ipx_interfaces, *pos);
+}
+
+static void *ipx_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	return seq_list_next(v, &ipx_interfaces, pos);
+}
+
+static void ipx_seq_interface_stop(struct seq_file *seq, void *v)
+{
+	spin_unlock_bh(&ipx_interfaces_lock);
+}
+
+static int ipx_seq_interface_show(struct seq_file *seq, void *v)
+{
+	struct ipx_interface *i;
+
+	if (v == &ipx_interfaces) {
+		seq_puts(seq, "Network    Node_Address   Primary  Device     "
+			      "Frame_Type");
+#ifdef IPX_REFCNT_DEBUG
+		seq_puts(seq, "  refcnt");
+#endif
+		seq_puts(seq, "\n");
+		goto out;
+	}
+
+	i = list_entry(v, struct ipx_interface, node);
+	seq_printf(seq, "%08X   ", ntohl(i->if_netnum));
+	seq_printf(seq, "%02X%02X%02X%02X%02X%02X   ",
+			i->if_node[0], i->if_node[1], i->if_node[2],
+			i->if_node[3], i->if_node[4], i->if_node[5]);
+	seq_printf(seq, "%-9s", i == ipx_primary_net ? "Yes" : "No");
+	seq_printf(seq, "%-11s", ipx_device_name(i));
+	seq_printf(seq, "%-9s", ipx_frame_name(i->if_dlink_type));
+#ifdef IPX_REFCNT_DEBUG
+	seq_printf(seq, "%6d", refcount_read(&i->refcnt));
+#endif
+	seq_puts(seq, "\n");
+out:
+	return 0;
+}
+
+static void *ipx_seq_route_start(struct seq_file *seq, loff_t *pos)
+{
+	read_lock_bh(&ipx_routes_lock);
+	return seq_list_start_head(&ipx_routes, *pos);
+}
+
+static void *ipx_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	return seq_list_next(v, &ipx_routes, pos);
+}
+
+static void ipx_seq_route_stop(struct seq_file *seq, void *v)
+{
+	read_unlock_bh(&ipx_routes_lock);
+}
+
+static int ipx_seq_route_show(struct seq_file *seq, void *v)
+{
+	struct ipx_route *rt;
+
+	if (v == &ipx_routes) {
+		seq_puts(seq, "Network    Router_Net   Router_Node\n");
+		goto out;
+	}
+
+	rt = list_entry(v, struct ipx_route, node);
+
+	seq_printf(seq, "%08X   ", ntohl(rt->ir_net));
+	if (rt->ir_routed)
+		seq_printf(seq, "%08X     %02X%02X%02X%02X%02X%02X\n",
+			   ntohl(rt->ir_intrfc->if_netnum),
+			   rt->ir_router_node[0], rt->ir_router_node[1],
+			   rt->ir_router_node[2], rt->ir_router_node[3],
+			   rt->ir_router_node[4], rt->ir_router_node[5]);
+	else
+		seq_puts(seq, "Directly     Connected\n");
+out:
+	return 0;
+}
+
+static __inline__ struct sock *ipx_get_socket_idx(loff_t pos)
+{
+	struct sock *s = NULL;
+	struct ipx_interface *i;
+
+	list_for_each_entry(i, &ipx_interfaces, node) {
+		spin_lock_bh(&i->if_sklist_lock);
+		sk_for_each(s, &i->if_sklist) {
+			if (!pos)
+				break;
+			--pos;
+		}
+		spin_unlock_bh(&i->if_sklist_lock);
+		if (!pos) {
+			if (s)
+				goto found;
+			break;
+		}
+	}
+	s = NULL;
+found:
+	return s;
+}
+
+static void *ipx_seq_socket_start(struct seq_file *seq, loff_t *pos)
+{
+	loff_t l = *pos;
+
+	spin_lock_bh(&ipx_interfaces_lock);
+	return l ? ipx_get_socket_idx(--l) : SEQ_START_TOKEN;
+}
+
+static void *ipx_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct sock* sk, *next;
+	struct ipx_interface *i;
+	struct ipx_sock *ipxs;
+
+	++*pos;
+	if (v == SEQ_START_TOKEN) {
+		sk = NULL;
+		i = ipx_interfaces_head();
+		if (!i)
+			goto out;
+		sk = sk_head(&i->if_sklist);
+		if (sk)
+			spin_lock_bh(&i->if_sklist_lock);
+		goto out;
+	}
+	sk = v;
+	next = sk_next(sk);
+	if (next) {
+		sk = next;
+		goto out;
+	}
+	ipxs = ipx_sk(sk);
+	i = ipxs->intrfc;
+	spin_unlock_bh(&i->if_sklist_lock);
+	sk = NULL;
+	for (;;) {
+		if (i->node.next == &ipx_interfaces)
+			break;
+		i = list_entry(i->node.next, struct ipx_interface, node);
+		spin_lock_bh(&i->if_sklist_lock);
+		if (!hlist_empty(&i->if_sklist)) {
+			sk = sk_head(&i->if_sklist);
+			break;
+		}
+		spin_unlock_bh(&i->if_sklist_lock);
+	}
+out:
+	return sk;
+}
+
+static int ipx_seq_socket_show(struct seq_file *seq, void *v)
+{
+	struct sock *s;
+	struct ipx_sock *ipxs;
+
+	if (v == SEQ_START_TOKEN) {
+#ifdef CONFIG_IPX_INTERN
+		seq_puts(seq, "Local_Address               "
+			      "Remote_Address              Tx_Queue  "
+			      "Rx_Queue  State  Uid\n");
+#else
+		seq_puts(seq, "Local_Address  Remote_Address              "
+			      "Tx_Queue  Rx_Queue  State  Uid\n");
+#endif
+		goto out;
+	}
+
+	s = v;
+	ipxs = ipx_sk(s);
+#ifdef CONFIG_IPX_INTERN
+	seq_printf(seq, "%08X:%02X%02X%02X%02X%02X%02X:%04X  ",
+		   ntohl(ipxs->intrfc->if_netnum),
+		   ipxs->node[0], ipxs->node[1], ipxs->node[2], ipxs->node[3],
+		   ipxs->node[4], ipxs->node[5], ntohs(ipxs->port));
+#else
+	seq_printf(seq, "%08X:%04X  ", ntohl(ipxs->intrfc->if_netnum),
+		   ntohs(ipxs->port));
+#endif	/* CONFIG_IPX_INTERN */
+	if (s->sk_state != TCP_ESTABLISHED)
+		seq_printf(seq, "%-28s", "Not_Connected");
+	else {
+		seq_printf(seq, "%08X:%02X%02X%02X%02X%02X%02X:%04X  ",
+			   ntohl(ipxs->dest_addr.net),
+			   ipxs->dest_addr.node[0], ipxs->dest_addr.node[1],
+			   ipxs->dest_addr.node[2], ipxs->dest_addr.node[3],
+			   ipxs->dest_addr.node[4], ipxs->dest_addr.node[5],
+			   ntohs(ipxs->dest_addr.sock));
+	}
+
+	seq_printf(seq, "%08X  %08X  %02X     %03u\n",
+		   sk_wmem_alloc_get(s),
+		   sk_rmem_alloc_get(s),
+		   s->sk_state,
+		   from_kuid_munged(seq_user_ns(seq), sock_i_uid(s)));
+out:
+	return 0;
+}
+
+static const struct seq_operations ipx_seq_interface_ops = {
+	.start  = ipx_seq_interface_start,
+	.next   = ipx_seq_interface_next,
+	.stop   = ipx_seq_interface_stop,
+	.show   = ipx_seq_interface_show,
+};
+
+static const struct seq_operations ipx_seq_route_ops = {
+	.start  = ipx_seq_route_start,
+	.next   = ipx_seq_route_next,
+	.stop   = ipx_seq_route_stop,
+	.show   = ipx_seq_route_show,
+};
+
+static const struct seq_operations ipx_seq_socket_ops = {
+	.start  = ipx_seq_socket_start,
+	.next   = ipx_seq_socket_next,
+	.stop   = ipx_seq_interface_stop,
+	.show   = ipx_seq_socket_show,
+};
+
+static int ipx_seq_route_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &ipx_seq_route_ops);
+}
+
+static int ipx_seq_interface_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &ipx_seq_interface_ops);
+}
+
+static int ipx_seq_socket_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &ipx_seq_socket_ops);
+}
+
+static const struct file_operations ipx_seq_interface_fops = {
+	.owner		= THIS_MODULE,
+	.open           = ipx_seq_interface_open,
+	.read           = seq_read,
+	.llseek         = seq_lseek,
+	.release        = seq_release,
+};
+
+static const struct file_operations ipx_seq_route_fops = {
+	.owner		= THIS_MODULE,
+	.open           = ipx_seq_route_open,
+	.read           = seq_read,
+	.llseek         = seq_lseek,
+	.release        = seq_release,
+};
+
+static const struct file_operations ipx_seq_socket_fops = {
+	.owner		= THIS_MODULE,
+	.open           = ipx_seq_socket_open,
+	.read           = seq_read,
+	.llseek         = seq_lseek,
+	.release        = seq_release,
+};
+
+static struct proc_dir_entry *ipx_proc_dir;
+
+int __init ipx_proc_init(void)
+{
+	struct proc_dir_entry *p;
+	int rc = -ENOMEM;
+
+	ipx_proc_dir = proc_mkdir("ipx", init_net.proc_net);
+
+	if (!ipx_proc_dir)
+		goto out;
+	p = proc_create("interface", S_IRUGO,
+			ipx_proc_dir, &ipx_seq_interface_fops);
+	if (!p)
+		goto out_interface;
+
+	p = proc_create("route", S_IRUGO, ipx_proc_dir, &ipx_seq_route_fops);
+	if (!p)
+		goto out_route;
+
+	p = proc_create("socket", S_IRUGO, ipx_proc_dir, &ipx_seq_socket_fops);
+	if (!p)
+		goto out_socket;
+
+	rc = 0;
+out:
+	return rc;
+out_socket:
+	remove_proc_entry("route", ipx_proc_dir);
+out_route:
+	remove_proc_entry("interface", ipx_proc_dir);
+out_interface:
+	remove_proc_entry("ipx", init_net.proc_net);
+	goto out;
+}
+
+void __exit ipx_proc_exit(void)
+{
+	remove_proc_entry("interface", ipx_proc_dir);
+	remove_proc_entry("route", ipx_proc_dir);
+	remove_proc_entry("socket", ipx_proc_dir);
+	remove_proc_entry("ipx", init_net.proc_net);
+}
+
+#else /* CONFIG_PROC_FS */
+
+int __init ipx_proc_init(void)
+{
+	return 0;
+}
+
+void __exit ipx_proc_exit(void)
+{
+}
+
+#endif /* CONFIG_PROC_FS */