o Appletalk: use seq_file for proc stuff

And also move MODULE_LICENSE from aarp.c to ddp.c, as its there
that the module_init/exit is.

Also added MODULE_AUTHOR and MODULE_DESCRIPTION.

include/linux/atalk.h

@@ -198,5 +198,19 @@ extern void aarp_cleanup_module(void);
 
 #define at_sk(__sk) ((struct atalk_sock *)(__sk)->protinfo)
 
+extern struct sock *atalk_sockets;
+extern spinlock_t atalk_sockets_lock;
+
+extern struct atalk_route *atalk_routes;
+extern rwlock_t atalk_routes_lock;
+
+extern struct atalk_iface *atalk_interfaces;
+extern spinlock_t atalk_interfaces_lock;
+
+extern struct atalk_route atrtr_default;
+
+extern int atalk_proc_init(void);
+extern void atalk_proc_exit(void);
+
 #endif /* __KERNEL__ */
 #endif /* __LINUX_ATALK_H__ */

net/appletalk/Makefile

@@ -6,7 +6,7 @@ export-objs = ddp.o
 
 obj-$(CONFIG_ATALK) += appletalk.o
 
-appletalk-y			:= aarp.o ddp.o
+appletalk-y			:= aarp.o ddp.o atalk_proc.o
 appletalk-$(CONFIG_SYSCTL)	+= sysctl_net_atalk.o
 appletalk-objs			:= $(appletalk-y)
 

net/appletalk/aarp.c

@@ -30,34 +30,13 @@
  */
 
 #include <linux/config.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <asm/bitops.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/socket.h>
-#include <linux/sockios.h>
-#include <linux/in.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/if_ether.h>
-#include <linux/inet.h>
-#include <linux/notifier.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
 #include <linux/if_arp.h>
-#include <linux/skbuff.h>
-#include <linux/spinlock.h>
 #include <net/sock.h>
 #include <net/datalink.h>
 #include <net/psnap.h>
 #include <linux/atalk.h>
 #include <linux/init.h>
 #include <linux/proc_fs.h>
-#include <linux/module.h>
 
 int sysctl_aarp_expiry_time = AARP_EXPIRY_TIME;
 int sysctl_aarp_tick_time = AARP_TICK_TIME;
@@ -995,4 +974,3 @@ void aarp_unregister_proc_fs(void)
 	proc_net_remove("aarp");
 }
 #endif
-MODULE_LICENSE("GPL");

net/appletalk/atalk_proc.c

+/*
+ * 	atalk_proc.c - proc support for Appletalk
+ *
+ * 	Copyright(c) Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ *
+ *	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, version 2.
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <net/sock.h>
+#include <linux/atalk.h>
+
+#ifdef CONFIG_PROC_FS
+static __inline__ struct atalk_iface *atalk_get_interface_idx(loff_t pos)
+{
+	struct atalk_iface *i;
+
+	for (i = atalk_interfaces; pos && i; i = i->next)
+		--pos;
+
+	return i;
+}
+
+static void *atalk_seq_interface_start(struct seq_file *seq, loff_t *pos)
+{
+	loff_t l = *pos;
+
+	spin_lock_bh(&atalk_interfaces_lock);
+	return l ? atalk_get_interface_idx(--l) : (void *)1;
+}
+
+static void *atalk_seq_interface_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct atalk_iface *i;
+
+	++*pos;
+	if (v == (void *)1) {
+		i = NULL;
+		if (atalk_interfaces)
+			i = atalk_interfaces;
+		goto out;
+	}
+	i = v;
+	i = i->next;
+out:
+	return i;
+}
+
+static void atalk_seq_interface_stop(struct seq_file *seq, void *v)
+{
+	spin_unlock_bh(&atalk_interfaces_lock);
+}
+
+static int atalk_seq_interface_show(struct seq_file *seq, void *v)
+{
+	struct atalk_iface *iface;
+
+	if (v == (void *)1) {
+		seq_puts(seq, "Interface	  Address   Networks   "
+			      "Status\n");
+		goto out;
+	}
+
+	iface = v;
+	seq_printf(seq, "%-16s %04X:%02X  %04X-%04X  %d\n",
+		   iface->dev->name, ntohs(iface->address.s_net),
+		   iface->address.s_node, ntohs(iface->nets.nr_firstnet),
+		   ntohs(iface->nets.nr_lastnet), iface->status);
+out:
+	return 0;
+}
+
+static __inline__ struct atalk_route *atalk_get_route_idx(loff_t pos)
+{
+	struct atalk_route *r;
+
+	for (r = atalk_routes; pos && r; r = r->next)
+		--pos;
+
+	return r;
+}
+
+static void *atalk_seq_route_start(struct seq_file *seq, loff_t *pos)
+{
+	loff_t l = *pos;
+
+	read_lock_bh(&atalk_routes_lock);
+	return l ? atalk_get_route_idx(--l) : (void *)1;
+}
+
+static void *atalk_seq_route_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct atalk_route *r;
+
+	++*pos;
+	if (v == (void *)1) {
+		r = NULL;
+		if (atalk_routes)
+			r = atalk_routes;
+		goto out;
+	}
+	r = v;
+	r = r->next;
+out:
+	return r;
+}
+
+static void atalk_seq_route_stop(struct seq_file *seq, void *v)
+{
+	read_unlock_bh(&atalk_routes_lock);
+}
+
+static int atalk_seq_route_show(struct seq_file *seq, void *v)
+{
+	struct atalk_route *rt;
+
+	if (v == (void *)1) {
+		seq_puts(seq, "Target        Router  Flags Dev\n");
+		goto out;
+	}
+
+	if (atrtr_default.dev) {
+		rt = &atrtr_default;
+		seq_printf(seq, "Default     %04X:%02X  %-4d  %s\n",
+			       ntohs(rt->gateway.s_net), rt->gateway.s_node,
+			       rt->flags, rt->dev->name);
+	}
+
+	rt = v;
+	seq_printf(seq, "%04X:%02X     %04X:%02X  %-4d  %s\n",
+		   ntohs(rt->target.s_net), rt->target.s_node,
+		   ntohs(rt->gateway.s_net), rt->gateway.s_node,
+		   rt->flags, rt->dev->name);
+out:
+	return 0;
+}
+
+static __inline__ struct sock *atalk_get_socket_idx(loff_t pos)
+{
+	struct sock *s;
+
+	for (s = atalk_sockets; pos && s; s = s->next)
+		--pos;
+
+	return s;
+}
+
+static void *atalk_seq_socket_start(struct seq_file *seq, loff_t *pos)
+{
+	loff_t l = *pos;
+
+	spin_lock_bh(&atalk_sockets_lock);
+	return l ? atalk_get_socket_idx(--l) : (void *)1;
+}
+
+static void *atalk_seq_socket_next(struct seq_file *seq, void *v, loff_t *pos)
+{
+	struct sock *i;
+
+	++*pos;
+	if (v == (void *)1) {
+		i = NULL;
+		if (atalk_sockets)
+			i = atalk_sockets;
+		goto out;
+	}
+	i = v;
+	i = i->next;
+out:
+	return i;
+}
+
+static void atalk_seq_socket_stop(struct seq_file *seq, void *v)
+{
+	spin_unlock_bh(&atalk_sockets_lock);
+}
+
+static int atalk_seq_socket_show(struct seq_file *seq, void *v)
+{
+	struct sock *s;
+	struct atalk_sock *at;
+
+	if (v == (void *)1) {
+		seq_printf(seq, "Type Local_addr  Remote_addr Tx_queue "
+				"Rx_queue St UID\n");
+		goto out;
+	}
+
+	s = v;
+	at = at_sk(s);
+
+	seq_printf(seq, "%02X   %04X:%02X:%02X  %04X:%02X:%02X  %08X:%08X "
+			"%02X %d\n",
+		   s->type, ntohs(at->src_net), at->src_node, at->src_port,
+		   ntohs(at->dest_net), at->dest_node, at->dest_port,
+		   atomic_read(&s->wmem_alloc), atomic_read(&s->rmem_alloc),
+		   s->state, SOCK_INODE(s->socket)->i_uid);
+out:
+	return 0;
+}
+
+struct seq_operations atalk_seq_interface_ops = {
+	.start  = atalk_seq_interface_start,
+	.next   = atalk_seq_interface_next,
+	.stop   = atalk_seq_interface_stop,
+	.show   = atalk_seq_interface_show,
+};
+
+struct seq_operations atalk_seq_route_ops = {
+	.start  = atalk_seq_route_start,
+	.next   = atalk_seq_route_next,
+	.stop   = atalk_seq_route_stop,
+	.show   = atalk_seq_route_show,
+};
+
+struct seq_operations atalk_seq_socket_ops = {
+	.start  = atalk_seq_socket_start,
+	.next   = atalk_seq_socket_next,
+	.stop   = atalk_seq_socket_stop,
+	.show   = atalk_seq_socket_show,
+};
+
+static int atalk_seq_interface_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &atalk_seq_interface_ops);
+}
+
+static int atalk_seq_route_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &atalk_seq_route_ops);
+}
+
+static int atalk_seq_socket_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &atalk_seq_socket_ops);
+}
+
+static struct file_operations atalk_seq_interface_fops = {
+	.open		= atalk_seq_interface_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+static struct file_operations atalk_seq_route_fops = {
+	.open		= atalk_seq_route_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+static struct file_operations atalk_seq_socket_fops = {
+	.open		= atalk_seq_socket_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
+static struct proc_dir_entry *atalk_proc_dir;
+
+int __init atalk_proc_init(void)
+{
+	struct proc_dir_entry *p;
+	int rc = -ENOMEM;
+
+	atalk_proc_dir = proc_mkdir("atalk", proc_net);
+	if (!atalk_proc_dir)
+		goto out;
+
+	p = create_proc_entry("interface", S_IRUGO, atalk_proc_dir);
+	if (!p)
+		goto out_interface;
+	p->proc_fops = &atalk_seq_interface_fops;
+
+	p = create_proc_entry("route", S_IRUGO, atalk_proc_dir);
+	if (!p)
+		goto out_route;
+	p->proc_fops = &atalk_seq_route_fops;
+
+	p = create_proc_entry("socket", S_IRUGO, atalk_proc_dir);
+	if (!p)
+		goto out_socket;
+	p->proc_fops = &atalk_seq_socket_fops;
+
+	rc = 0;
+out:
+	return rc;
+out_socket:
+	remove_proc_entry("route", atalk_proc_dir);
+out_route:
+	remove_proc_entry("interface", atalk_proc_dir);
+out_interface:
+	remove_proc_entry("atalk", proc_net);
+	goto out;
+}
+
+void __exit atalk_proc_exit(void)
+{
+	remove_proc_entry("interface", atalk_proc_dir);
+	remove_proc_entry("route", atalk_proc_dir);
+	remove_proc_entry("socket", atalk_proc_dir);
+	remove_proc_entry("atalk", proc_net);
+}
+
+#else /* CONFIG_PROC_FS */
+int __init atalk_proc_init(void)
+{
+	return 0;
+}
+
+void __exit atalk_proc_exit(void)
+{
+}
+#endif /* CONFIG_PROC_FS */

net/appletalk/sysctl_net_atalk.c

@@ -7,7 +7,6 @@
  */
 
 #include <linux/config.h>
-#include <linux/mm.h>
 #include <linux/sysctl.h>
 
 extern int sysctl_aarp_expiry_time;
@@ -16,7 +15,7 @@ extern int sysctl_aarp_retransmit_limit;
 extern int sysctl_aarp_resolve_time;
 
 #ifdef CONFIG_SYSCTL
-static ctl_table atalk_table[] = {
+static struct ctl_table atalk_table[] = {
 	{
 		.ctl_name	= NET_ATALK_AARP_EXPIRY_TIME,
 		.procname	= "aarp-expiry-time",
@@ -52,7 +51,7 @@ static ctl_table atalk_table[] = {
 	{ 0 },
 };
 
-static ctl_table atalk_dir_table[] = {
+static struct ctl_table atalk_dir_table[] = {
 	{
 		.ctl_name	= NET_ATALK,
 		.procname	= "appletalk",
@@ -62,7 +61,7 @@ static ctl_table atalk_dir_table[] = {
 	{ 0 },
 };
 
-static ctl_table atalk_root_table[] = {
+static struct ctl_table atalk_root_table[] = {
 	{
 		.ctl_name	= CTL_NET,
 		.procname	= "net",