Linux-2.6.12-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!
diff --git a/drivers/net/wan/hdlc_raw_eth.c b/drivers/net/wan/hdlc_raw_eth.c
new file mode 100644
index 0000000..b1285cc
--- /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;
+}