patch-2.4.21 linux-2.4.21/drivers/net/wan/hdlc_raw.c
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- Lines: 93
- Date:
2003-06-13 07:51:35.000000000 -0700
- Orig file:
linux-2.4.20/drivers/net/wan/hdlc_raw.c
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.20/drivers/net/wan/hdlc_raw.c linux-2.4.21/drivers/net/wan/hdlc_raw.c
@@ -0,0 +1,92 @@
+/*
+ * Generic HDLC support routines for Linux
+ * HDLC support
+ *
+ * Copyright (C) 1999 - 2001 Krzysztof Halasa <khc@pm.waw.pl>
+ *
+ * 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
+ * (at your option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/poll.h>
+#include <linux/errno.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/lapb.h>
+#include <linux/rtnetlink.h>
+#include <linux/hdlc.h>
+
+
+static void raw_rx(struct sk_buff *skb)
+{
+ skb->protocol = htons(ETH_P_IP);
+ netif_rx(skb);
+}
+
+
+
+int hdlc_raw_ioctl(hdlc_device *hdlc, struct ifreq *ifr)
+{
+ raw_hdlc_proto *raw_s = ifr->ifr_settings.ifs_ifsu.raw_hdlc;
+ const size_t size = sizeof(raw_hdlc_proto);
+ raw_hdlc_proto new_settings;
+ struct net_device *dev = hdlc_to_dev(hdlc);
+ int result;
+
+ switch (ifr->ifr_settings.type) {
+ case IF_GET_PROTO:
+ ifr->ifr_settings.type = IF_PROTO_HDLC;
+ if (ifr->ifr_settings.size < size) {
+ ifr->ifr_settings.size = size; /* data size wanted */
+ return -ENOBUFS;
+ }
+ if (copy_to_user(raw_s, &hdlc->state.raw_hdlc.settings, size))
+ return -EFAULT;
+ return 0;
+
+ case IF_PROTO_HDLC:
+ if (!capable(CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (dev->flags & IFF_UP)
+ return -EBUSY;
+
+ if (copy_from_user(&new_settings, raw_s, size))
+ return -EFAULT;
+
+ if (new_settings.encoding == ENCODING_DEFAULT)
+ new_settings.encoding = ENCODING_NRZ;
+
+ if (new_settings.parity == PARITY_DEFAULT)
+ new_settings.parity = PARITY_NONE;
+
+ result = hdlc->attach(hdlc, new_settings.encoding,
+ new_settings.parity);
+ if (result)
+ return result;
+
+ hdlc_proto_detach(hdlc);
+ memcpy(&hdlc->state.raw_hdlc.settings, &new_settings, size);
+
+ hdlc->open = NULL;
+ hdlc->stop = NULL;
+ hdlc->netif_rx = raw_rx;
+ hdlc->proto = IF_PROTO_HDLC;
+ dev->hard_start_xmit = hdlc->xmit;
+ dev->hard_header = NULL;
+ dev->type = ARPHRD_RAWHDLC;
+ dev->addr_len = 0;
+ return 0;
+ }
+
+ return -EINVAL;
+}
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