Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 107 insertions, 0 deletions

diff --git a/drivers/net/wan/hdlc_raw_eth.c b/drivers/net/wan/hdlc_raw_eth.c
new file mode 100644
index 000000000000..b1285cc8fee6
--- /dev/null
+++ b/drivers/net/wan/hdlc_raw_eth.c
@@ -0,0 +1,107 @@
+/*
+ * Generic HDLC support routines for Linux
+ * HDLC Ethernet emulation support
+ *
+ * Copyright (C) 2002-2003 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/if_arp.h>
+#include <linux/init.h>
+#include <linux/skbuff.h>
+#include <linux/pkt_sched.h>
+#include <linux/random.h>
+#include <linux/inetdevice.h>
+#include <linux/lapb.h>
+#include <linux/rtnetlink.h>
+#include <linux/etherdevice.h>
+#include <linux/hdlc.h>
+
+
+static int eth_tx(struct sk_buff *skb, struct net_device *dev)
+{
+        int pad = ETH_ZLEN - skb->len;
+        if (pad > 0) {          /* Pad the frame with zeros */
+                int len = skb->len;
+                if (skb_tailroom(skb) < pad)
+                        if (pskb_expand_head(skb, 0, pad, GFP_ATOMIC)) {
+                                hdlc_stats(dev)->tx_dropped++;
+                                dev_kfree_skb(skb);
+                                return 0;
+                        }
+                skb_put(skb, pad);
+                memset(skb->data + len, 0, pad);
+        }
+        return dev_to_hdlc(dev)->xmit(skb, dev);
+}
+
+
+int hdlc_raw_eth_ioctl(struct net_device *dev, struct ifreq *ifr)
+{
+        raw_hdlc_proto __user *raw_s = ifr->ifr_settings.ifs_ifsu.raw_hdlc;
+        const size_t size = sizeof(raw_hdlc_proto);
+        raw_hdlc_proto new_settings;
+        hdlc_device *hdlc = dev_to_hdlc(dev);
+        int result;
+        void *old_ch_mtu;
+        int old_qlen;
+
+        switch (ifr->ifr_settings.type) {
+        case IF_GET_PROTO:
+                ifr->ifr_settings.type = IF_PROTO_HDLC_ETH;
+                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_ETH:
+                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_CRC16_PR1_CCITT;
+
+                result = hdlc->attach(dev, new_settings.encoding,
+                                      new_settings.parity);
+                if (result)
+                        return result;
+
+                hdlc_proto_detach(hdlc);
+                memcpy(&hdlc->state.raw_hdlc.settings, &new_settings, size);
+                memset(&hdlc->proto, 0, sizeof(hdlc->proto));
+
+                hdlc->proto.type_trans = eth_type_trans;
+                hdlc->proto.id = IF_PROTO_HDLC_ETH;
+                dev->hard_start_xmit = eth_tx;
+                old_ch_mtu = dev->change_mtu;
+                old_qlen = dev->tx_queue_len;
+                ether_setup(dev);
+                dev->change_mtu = old_ch_mtu;
+                dev->tx_queue_len = old_qlen;
+                memcpy(dev->dev_addr, "\x00\x01", 2);
+                get_random_bytes(dev->dev_addr + 2, ETH_ALEN - 2);
+                return 0;
+        }
+
+        return -EINVAL;
+}