1 files changed, 130 insertions, 0 deletions

diff --git a/net/802/fc.c b/net/802/fc.c
new file mode 100644
index 000000000000..640d34e026c2
--- /dev/null
+++ b/net/802/fc.c
@@ -0,0 +1,130 @@
+/*
+ * NET3:        Fibre Channel device handling subroutines
+ * 
+ *              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.
+ *
+ *              Vineet Abraham <vma@iol.unh.edu>
+ *              v 1.0 03/22/99
+ */
+
+#include <linux/config.h>
+#include <asm/uaccess.h>
+#include <asm/system.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/fcdevice.h>
+#include <linux/skbuff.h>
+#include <linux/errno.h>
+#include <linux/timer.h>
+#include <linux/net.h>
+#include <linux/proc_fs.h>
+#include <linux/init.h>
+#include <net/arp.h>
+
+/*
+ *      Put the headers on a Fibre Channel packet. 
+ */
+ 
+static int fc_header(struct sk_buff *skb, struct net_device *dev,
+                     unsigned short type,
+                     void *daddr, void *saddr, unsigned len) 
+{
+        struct fch_hdr *fch;
+        int hdr_len;
+
+        /* 
+         * Add the 802.2 SNAP header if IP as the IPv4 code calls  
+         * dev->hard_header directly.
+         */
+        if (type == ETH_P_IP || type == ETH_P_ARP)
+        {
+                struct fcllc *fcllc;
+
+                hdr_len = sizeof(struct fch_hdr) + sizeof(struct fcllc);
+                fch = (struct fch_hdr *)skb_push(skb, hdr_len);
+                fcllc = (struct fcllc *)(fch+1);
+                fcllc->dsap = fcllc->ssap = EXTENDED_SAP;
+                fcllc->llc = UI_CMD;
+                fcllc->protid[0] = fcllc->protid[1] = fcllc->protid[2] = 0x00;
+                fcllc->ethertype = htons(type);
+        }
+        else
+        {
+                hdr_len = sizeof(struct fch_hdr);
+                fch = (struct fch_hdr *)skb_push(skb, hdr_len); 
+        }
+
+        if(saddr)
+                memcpy(fch->saddr,saddr,dev->addr_len);
+        else
+                memcpy(fch->saddr,dev->dev_addr,dev->addr_len);
+
+        if(daddr) 
+        {
+                memcpy(fch->daddr,daddr,dev->addr_len);
+                return(hdr_len);
+        }
+        return -hdr_len;
+}
+        
+/*
+ *      A neighbour discovery of some species (eg arp) has completed. We
+ *      can now send the packet.
+ */
+ 
+static int fc_rebuild_header(struct sk_buff *skb) 
+{
+        struct fch_hdr *fch=(struct fch_hdr *)skb->data;
+        struct fcllc *fcllc=(struct fcllc *)(skb->data+sizeof(struct fch_hdr));
+        if(fcllc->ethertype != htons(ETH_P_IP)) {
+                printk("fc_rebuild_header: Don't know how to resolve type %04X addresses ?\n",(unsigned int)htons(fcllc->ethertype));
+                return 0;
+        }
+#ifdef CONFIG_INET
+        return arp_find(fch->daddr, skb);
+#else
+        return 0;
+#endif
+}
+
+static void fc_setup(struct net_device *dev)
+{
+        dev->hard_header        = fc_header;
+        dev->rebuild_header     = fc_rebuild_header;
+                
+        dev->type               = ARPHRD_IEEE802;
+        dev->hard_header_len    = FC_HLEN;
+        dev->mtu                = 2024;
+        dev->addr_len           = FC_ALEN;
+        dev->tx_queue_len       = 100; /* Long queues on fc */
+        dev->flags              = IFF_BROADCAST;
+
+        memset(dev->broadcast, 0xFF, FC_ALEN);
+}
+
+/**
+ * alloc_fcdev - Register fibre channel device
+ * @sizeof_priv: Size of additional driver-private structure to be allocated
+ *      for this fibre channel device
+ *
+ * Fill in the fields of the device structure with fibre channel-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_fcdev(int sizeof_priv)
+{
+        return alloc_netdev(sizeof_priv, "fc%d", fc_setup);
+}
+EXPORT_SYMBOL(alloc_fcdev);