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, 234 insertions, 0 deletions

diff --git a/net/802/hippi.c b/net/802/hippi.c
new file mode 100644
index 000000000000..4eb135c0afbb
--- /dev/null
+++ b/net/802/hippi.c
@@ -0,0 +1,234 @@
+/*
+ * INET         An implementation of the TCP/IP protocol suite for the LINUX
+ *              operating system.  INET is implemented using the  BSD Socket
+ *              interface as the means of communication with the user level.
+ *
+ *              HIPPI-type device handling.
+ *
+ * Version:     @(#)hippi.c     1.0.0   05/29/97
+ *
+ * Authors:     Ross Biro, <bir7@leland.Stanford.Edu>
+ *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *              Mark Evans, <evansmp@uhura.aston.ac.uk>
+ *              Florian  La Roche, <rzsfl@rz.uni-sb.de>
+ *              Alan Cox, <gw4pts@gw4pts.ampr.org>
+ *              Jes Sorensen, <Jes.Sorensen@cern.ch>
+ *
+ *              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/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/inet.h>
+#include <linux/netdevice.h>
+#include <linux/hippidevice.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <net/arp.h>
+#include <net/sock.h>
+#include <asm/uaccess.h>
+#include <asm/checksum.h>
+#include <asm/system.h>
+
+/*
+ * Create the HIPPI MAC header for an arbitrary protocol layer 
+ *
+ * saddr=NULL   means use device source address
+ * daddr=NULL   means leave destination address (eg unresolved arp)
+ */
+
+static int hippi_header(struct sk_buff *skb, struct net_device *dev,
+                        unsigned short type, void *daddr, void *saddr,
+                        unsigned len)
+{
+        struct hippi_hdr *hip = (struct hippi_hdr *)skb_push(skb, HIPPI_HLEN);
+
+        if (!len){
+                len = skb->len - HIPPI_HLEN;
+                printk("hippi_header(): length not supplied\n");
+        }
+
+        /*
+         * Due to the stupidity of the little endian byte-order we
+         * have to set the fp field this way.
+         */
+        hip->fp.fixed           = __constant_htonl(0x04800018);
+        hip->fp.d2_size         = htonl(len + 8);
+        hip->le.fc              = 0;
+        hip->le.double_wide     = 0;    /* only HIPPI 800 for the time being */
+        hip->le.message_type    = 0;    /* Data PDU */
+
+        hip->le.dest_addr_type  = 2;    /* 12 bit SC address */
+        hip->le.src_addr_type   = 2;    /* 12 bit SC address */
+
+        memcpy(hip->le.src_switch_addr, dev->dev_addr + 3, 3);
+        memset(&hip->le.reserved, 0, 16);
+
+        hip->snap.dsap          = HIPPI_EXTENDED_SAP;
+        hip->snap.ssap          = HIPPI_EXTENDED_SAP;
+        hip->snap.ctrl          = HIPPI_UI_CMD;
+        hip->snap.oui[0]        = 0x00;
+        hip->snap.oui[1]        = 0x00;
+        hip->snap.oui[2]        = 0x00;
+        hip->snap.ethertype     = htons(type);
+
+        if (daddr)
+        {
+                memcpy(hip->le.dest_switch_addr, daddr + 3, 3);
+                memcpy(&skb->private.ifield, daddr + 2, 4);
+                return HIPPI_HLEN;
+        }
+        return -((int)HIPPI_HLEN);
+}
+
+
+/*
+ * Rebuild the HIPPI MAC header. This is called after an ARP has
+ * completed on this sk_buff. We now let ARP fill in the other fields.
+ */
+
+static int hippi_rebuild_header(struct sk_buff *skb)
+{
+        struct hippi_hdr *hip = (struct hippi_hdr *)skb->data;
+
+        /*
+         * Only IP is currently supported
+         */
+         
+        if(hip->snap.ethertype != __constant_htons(ETH_P_IP)) 
+        {
+                printk(KERN_DEBUG "%s: unable to resolve type %X addresses.\n",skb->dev->name,ntohs(hip->snap.ethertype));
+                return 0;
+        }
+
+        /*
+         * We don't support dynamic ARP on HIPPI, but we use the ARP
+         * static ARP tables to hold the I-FIELDs.
+         */
+        return arp_find(hip->le.daddr, skb);
+}
+
+
+/*
+ *      Determine the packet's protocol ID.
+ */
+ 
+unsigned short hippi_type_trans(struct sk_buff *skb, struct net_device *dev)
+{
+        struct hippi_hdr *hip;
+        
+        hip = (struct hippi_hdr *) skb->data;
+
+        /*
+         * This is actually wrong ... question is if we really should
+         * set the raw address here.
+         */
+         skb->mac.raw = skb->data;
+         skb_pull(skb, HIPPI_HLEN);
+
+        /*
+         * No fancy promisc stuff here now.
+         */
+
+        return hip->snap.ethertype;
+}
+
+EXPORT_SYMBOL(hippi_type_trans);
+
+static int hippi_change_mtu(struct net_device *dev, int new_mtu)
+{
+        /*
+         * HIPPI's got these nice large MTUs.
+         */
+        if ((new_mtu < 68) || (new_mtu > 65280))
+                return -EINVAL;
+        dev->mtu = new_mtu;
+        return(0);
+}
+
+/*
+ * For HIPPI we will actually use the lower 4 bytes of the hardware
+ * address as the I-FIELD rather than the actual hardware address.
+ */
+static int hippi_mac_addr(struct net_device *dev, void *p)
+{
+        struct sockaddr *addr = p;
+        if (netif_running(dev))
+                return -EBUSY;
+        memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
+        return 0;
+}
+
+static int hippi_neigh_setup_dev(struct net_device *dev, struct neigh_parms *p)
+{
+        /* Never send broadcast/multicast ARP messages */
+        p->mcast_probes = 0;
+ 
+        /* In IPv6 unicast probes are valid even on NBMA,
+        * because they are encapsulated in normal IPv6 protocol.
+        * Should be a generic flag. 
+        */
+        if (p->tbl->family != AF_INET6)
+                p->ucast_probes = 0;
+        return 0;
+}
+
+static void hippi_setup(struct net_device *dev)
+{
+        dev->set_multicast_list         = NULL;
+        dev->change_mtu                 = hippi_change_mtu;
+        dev->hard_header                = hippi_header;
+        dev->rebuild_header             = hippi_rebuild_header;
+        dev->set_mac_address            = hippi_mac_addr;
+        dev->hard_header_parse          = NULL;
+        dev->hard_header_cache          = NULL;
+        dev->header_cache_update        = NULL;
+        dev->neigh_setup                = hippi_neigh_setup_dev; 
+
+        /*
+         * We don't support HIPPI `ARP' for the time being, and probably
+         * never will unless someone else implements it. However we
+         * still need a fake ARPHRD to make ifconfig and friends play ball.
+         */
+        dev->type               = ARPHRD_HIPPI;
+        dev->hard_header_len    = HIPPI_HLEN;
+        dev->mtu                = 65280;
+        dev->addr_len           = HIPPI_ALEN;
+        dev->tx_queue_len       = 25 /* 5 */;
+        memset(dev->broadcast, 0xFF, HIPPI_ALEN);
+
+
+        /*
+         * HIPPI doesn't support broadcast+multicast and we only use
+         * static ARP tables. ARP is disabled by hippi_neigh_setup_dev. 
+         */
+        dev->flags = 0; 
+}
+
+/**
+ * alloc_hippi_dev - Register HIPPI device
+ * @sizeof_priv: Size of additional driver-private structure to be allocated
+ *      for this HIPPI device
+ *
+ * Fill in the fields of the device structure with HIPPI-generic values.
+ *
+ * Constructs a new net device, complete with a private data area of
+ * size @sizeof_priv.  A 32-byte (not bit) alignment is enforced for
+ * this private data area.
+ */
+
+struct net_device *alloc_hippi_dev(int sizeof_priv)
+{
+        return alloc_netdev(sizeof_priv, "hip%d", hippi_setup);
+}
+
+EXPORT_SYMBOL(alloc_hippi_dev);