diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/net/wan/hdlc_x25.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/net/wan/hdlc_x25.c | 243 |
1 files changed, 0 insertions, 243 deletions
diff --git a/ANDROID_3.4.5/drivers/net/wan/hdlc_x25.c b/ANDROID_3.4.5/drivers/net/wan/hdlc_x25.c deleted file mode 100644 index a49aec5e..00000000 --- a/ANDROID_3.4.5/drivers/net/wan/hdlc_x25.c +++ /dev/null @@ -1,243 +0,0 @@ -/* - * Generic HDLC support routines for Linux - * X.25 support - * - * 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/errno.h> -#include <linux/gfp.h> -#include <linux/hdlc.h> -#include <linux/if_arp.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/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) -{ - struct sk_buff *skb; - unsigned char *ptr; - - if ((skb = dev_alloc_skb(1)) == NULL) { - netdev_err(dev, "out of memory\n"); - return; - } - - ptr = skb_put(skb, 1); - *ptr = code; - - skb->protocol = x25_type_trans(skb, dev); - netif_rx(skb); -} - - - -static void x25_connected(struct net_device *dev, int reason) -{ - x25_connect_disconnect(dev, reason, X25_IFACE_CONNECT); -} - - - -static void x25_disconnected(struct net_device *dev, int reason) -{ - x25_connect_disconnect(dev, reason, X25_IFACE_DISCONNECT); -} - - - -static int x25_data_indication(struct net_device *dev, struct sk_buff *skb) -{ - unsigned char *ptr; - - skb_push(skb, 1); - - if (skb_cow(skb, 1)) - return NET_RX_DROP; - - ptr = skb->data; - *ptr = X25_IFACE_DATA; - - skb->protocol = x25_type_trans(skb, dev); - return netif_rx(skb); -} - - - -static void x25_data_transmit(struct net_device *dev, struct sk_buff *skb) -{ - hdlc_device *hdlc = dev_to_hdlc(dev); - hdlc->xmit(skb, dev); /* Ignore return value :-( */ -} - - - -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 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 NETDEV_TX_OK; - - 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 - netdev_err(dev, "LAPB connect request failed, error code = %i\n", - result); - } - break; - - 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 - netdev_err(dev, "LAPB disconnect request failed, error code = %i\n", - result); - } - break; - - default: /* to be defined */ - break; - } - - dev_kfree_skb(skb); - return NETDEV_TX_OK; -} - - - -static int x25_open(struct net_device *dev) -{ - int result; - 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) - return result; - return 0; -} - - - -static void x25_close(struct net_device *dev) -{ - lapb_unregister(dev); -} - - - -static int x25_rx(struct sk_buff *skb) -{ - struct net_device *dev = skb->dev; - - if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL) { - dev->stats.rx_dropped++; - return NET_RX_DROP; - } - - if (lapb_data_received(dev, skb) == LAPB_OK) - return NET_RX_SUCCESS; - - 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, -}; - - -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)) - return -EPERM; - - if (dev->flags & IFF_UP) - return -EBUSY; - - result=hdlc->attach(dev, ENCODING_NRZ,PARITY_CRC16_PR1_CCITT); - if (result) - return result; - - if ((result = attach_hdlc_protocol(dev, &proto, 0))) - return result; - dev->type = ARPHRD_X25; - 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"); |