aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wan/hdlc_x25.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wan/hdlc_x25.c')
-rw-r--r--drivers/net/wan/hdlc_x25.c128
1 files changed, 76 insertions, 52 deletions
diff --git a/drivers/net/wan/hdlc_x25.c b/drivers/net/wan/hdlc_x25.c
index 07e5eef1fe0..a49aec5efd2 100644
--- a/drivers/net/wan/hdlc_x25.c
+++ b/drivers/net/wan/hdlc_x25.c
@@ -2,29 +2,30 @@
* Generic HDLC support routines for Linux
* X.25 support
*
- * Copyright (C) 1999 - 2003 Krzysztof Halasa <khc@pm.waw.pl>
+ * Copyright (C) 1999 - 2006 Krzysztof Halasa <khc@pm.waw.pl>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License
* as published by the Free Software Foundation.
*/
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/poll.h>
#include <linux/errno.h>
+#include <linux/gfp.h>
+#include <linux/hdlc.h>
#include <linux/if_arp.h>
-#include <linux/init.h>
-#include <linux/skbuff.h>
-#include <linux/pkt_sched.h>
#include <linux/inetdevice.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
#include <linux/lapb.h>
+#include <linux/module.h>
+#include <linux/pkt_sched.h>
+#include <linux/poll.h>
#include <linux/rtnetlink.h>
-#include <linux/hdlc.h>
-
+#include <linux/skbuff.h>
#include <net/x25device.h>
+static int x25_ioctl(struct net_device *dev, struct ifreq *ifr);
+
/* These functions are callbacks called by LAPB layer */
static void x25_connect_disconnect(struct net_device *dev, int reason, int code)
@@ -33,7 +34,7 @@ static void x25_connect_disconnect(struct net_device *dev, int reason, int code)
unsigned char *ptr;
if ((skb = dev_alloc_skb(1)) == NULL) {
- printk(KERN_ERR "%s: out of memory\n", dev->name);
+ netdev_err(dev, "out of memory\n");
return;
}
@@ -48,14 +49,14 @@ static void x25_connect_disconnect(struct net_device *dev, int reason, int code)
static void x25_connected(struct net_device *dev, int reason)
{
- x25_connect_disconnect(dev, reason, 1);
+ x25_connect_disconnect(dev, reason, X25_IFACE_CONNECT);
}
static void x25_disconnected(struct net_device *dev, int reason)
{
- x25_connect_disconnect(dev, reason, 2);
+ x25_connect_disconnect(dev, reason, X25_IFACE_DISCONNECT);
}
@@ -70,7 +71,7 @@ static int x25_data_indication(struct net_device *dev, struct sk_buff *skb)
return NET_RX_DROP;
ptr = skb->data;
- *ptr = 0;
+ *ptr = X25_IFACE_DATA;
skb->protocol = x25_type_trans(skb, dev);
return netif_rx(skb);
@@ -86,40 +87,38 @@ static void x25_data_transmit(struct net_device *dev, struct sk_buff *skb)
-static int x25_xmit(struct sk_buff *skb, struct net_device *dev)
+static netdev_tx_t x25_xmit(struct sk_buff *skb, struct net_device *dev)
{
int result;
/* X.25 to LAPB */
switch (skb->data[0]) {
- case 0: /* Data to be transmitted */
+ case X25_IFACE_DATA: /* Data to be transmitted */
skb_pull(skb, 1);
if ((result = lapb_data_request(dev, skb)) != LAPB_OK)
dev_kfree_skb(skb);
- return 0;
+ return NETDEV_TX_OK;
- case 1:
+ case X25_IFACE_CONNECT:
if ((result = lapb_connect_request(dev))!= LAPB_OK) {
if (result == LAPB_CONNECTED)
/* Send connect confirm. msg to level 3 */
x25_connected(dev, 0);
else
- printk(KERN_ERR "%s: LAPB connect request "
- "failed, error code = %i\n",
- dev->name, result);
+ netdev_err(dev, "LAPB connect request failed, error code = %i\n",
+ result);
}
break;
- case 2:
+ case X25_IFACE_DISCONNECT:
if ((result = lapb_disconnect_request(dev)) != LAPB_OK) {
if (result == LAPB_NOTCONNECTED)
/* Send disconnect confirm. msg to level 3 */
x25_disconnected(dev, 0);
else
- printk(KERN_ERR "%s: LAPB disconnect request "
- "failed, error code = %i\n",
- dev->name, result);
+ netdev_err(dev, "LAPB disconnect request failed, error code = %i\n",
+ result);
}
break;
@@ -128,22 +127,22 @@ static int x25_xmit(struct sk_buff *skb, struct net_device *dev)
}
dev_kfree_skb(skb);
- return 0;
+ return NETDEV_TX_OK;
}
static int x25_open(struct net_device *dev)
{
- struct lapb_register_struct cb;
int result;
-
- cb.connect_confirmation = x25_connected;
- cb.connect_indication = x25_connected;
- cb.disconnect_confirmation = x25_disconnected;
- cb.disconnect_indication = x25_disconnected;
- cb.data_indication = x25_data_indication;
- cb.data_transmit = x25_data_transmit;
+ static const struct lapb_register_struct cb = {
+ .connect_confirmation = x25_connected,
+ .connect_indication = x25_connected,
+ .disconnect_confirmation = x25_disconnected,
+ .disconnect_indication = x25_disconnected,
+ .data_indication = x25_data_indication,
+ .data_transmit = x25_data_transmit,
+ };
result = lapb_register(dev, &cb);
if (result != LAPB_OK)
@@ -162,58 +161,83 @@ static void x25_close(struct net_device *dev)
static int x25_rx(struct sk_buff *skb)
{
- hdlc_device *hdlc = dev_to_hdlc(skb->dev);
+ struct net_device *dev = skb->dev;
if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL) {
- hdlc->stats.rx_dropped++;
+ dev->stats.rx_dropped++;
return NET_RX_DROP;
}
- if (lapb_data_received(skb->dev, skb) == LAPB_OK)
+ if (lapb_data_received(dev, skb) == LAPB_OK)
return NET_RX_SUCCESS;
- hdlc->stats.rx_errors++;
+ dev->stats.rx_errors++;
dev_kfree_skb_any(skb);
return NET_RX_DROP;
}
+static struct hdlc_proto proto = {
+ .open = x25_open,
+ .close = x25_close,
+ .ioctl = x25_ioctl,
+ .netif_rx = x25_rx,
+ .xmit = x25_xmit,
+ .module = THIS_MODULE,
+};
+
-int hdlc_x25_ioctl(struct net_device *dev, struct ifreq *ifr)
+static int x25_ioctl(struct net_device *dev, struct ifreq *ifr)
{
hdlc_device *hdlc = dev_to_hdlc(dev);
int result;
switch (ifr->ifr_settings.type) {
case IF_GET_PROTO:
+ if (dev_to_hdlc(dev)->proto != &proto)
+ return -EINVAL;
ifr->ifr_settings.type = IF_PROTO_X25;
return 0; /* return protocol only, no settable parameters */
case IF_PROTO_X25:
- if(!capable(CAP_NET_ADMIN))
+ if (!capable(CAP_NET_ADMIN))
return -EPERM;
- if(dev->flags & IFF_UP)
+ if (dev->flags & IFF_UP)
return -EBUSY;
result=hdlc->attach(dev, ENCODING_NRZ,PARITY_CRC16_PR1_CCITT);
if (result)
return result;
- hdlc_proto_detach(hdlc);
- memset(&hdlc->proto, 0, sizeof(hdlc->proto));
-
- hdlc->proto.open = x25_open;
- hdlc->proto.close = x25_close;
- hdlc->proto.netif_rx = x25_rx;
- hdlc->proto.type_trans = NULL;
- hdlc->proto.id = IF_PROTO_X25;
- dev->hard_start_xmit = x25_xmit;
- dev->hard_header = NULL;
+ if ((result = attach_hdlc_protocol(dev, &proto, 0)))
+ return result;
dev->type = ARPHRD_X25;
- dev->addr_len = 0;
+ netif_dormant_off(dev);
return 0;
}
return -EINVAL;
}
+
+
+static int __init mod_init(void)
+{
+ register_hdlc_protocol(&proto);
+ return 0;
+}
+
+
+
+static void __exit mod_exit(void)
+{
+ unregister_hdlc_protocol(&proto);
+}
+
+
+module_init(mod_init);
+module_exit(mod_exit);
+
+MODULE_AUTHOR("Krzysztof Halasa <khc@pm.waw.pl>");
+MODULE_DESCRIPTION("X.25 protocol support for generic HDLC");
+MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-13 20:02:24 +0000