1 files changed, 130 insertions, 0 deletions
diff --git a/net/802/fc.c b/net/802/fc.c
new file mode 100644
index 0000000..640d34e
--- /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);