2874c5fd28
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
107 lines
2.5 KiB
C
107 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* NET3: Fibre Channel device handling subroutines
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*
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* Vineet Abraham <vma@iol.unh.edu>
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* v 1.0 03/22/99
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*/
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#include <linux/uaccess.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/socket.h>
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#include <linux/in.h>
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#include <linux/inet.h>
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#include <linux/netdevice.h>
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#include <linux/fcdevice.h>
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#include <linux/skbuff.h>
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#include <linux/errno.h>
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#include <linux/timer.h>
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#include <linux/net.h>
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#include <linux/proc_fs.h>
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#include <linux/init.h>
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#include <linux/export.h>
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#include <net/arp.h>
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/*
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* Put the headers on a Fibre Channel packet.
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*/
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static int fc_header(struct sk_buff *skb, struct net_device *dev,
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unsigned short type,
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const void *daddr, const void *saddr, unsigned int len)
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{
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struct fch_hdr *fch;
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int hdr_len;
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/*
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* Add the 802.2 SNAP header if IP as the IPv4 code calls
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* dev->hard_header directly.
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*/
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if (type == ETH_P_IP || type == ETH_P_ARP)
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{
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struct fcllc *fcllc;
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hdr_len = sizeof(struct fch_hdr) + sizeof(struct fcllc);
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fch = skb_push(skb, hdr_len);
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fcllc = (struct fcllc *)(fch+1);
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fcllc->dsap = fcllc->ssap = EXTENDED_SAP;
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fcllc->llc = UI_CMD;
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fcllc->protid[0] = fcllc->protid[1] = fcllc->protid[2] = 0x00;
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fcllc->ethertype = htons(type);
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}
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else
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{
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hdr_len = sizeof(struct fch_hdr);
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fch = skb_push(skb, hdr_len);
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}
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if(saddr)
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memcpy(fch->saddr,saddr,dev->addr_len);
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else
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memcpy(fch->saddr,dev->dev_addr,dev->addr_len);
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if(daddr)
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{
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memcpy(fch->daddr,daddr,dev->addr_len);
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return hdr_len;
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}
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return -hdr_len;
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}
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static const struct header_ops fc_header_ops = {
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.create = fc_header,
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};
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static void fc_setup(struct net_device *dev)
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{
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dev->header_ops = &fc_header_ops;
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dev->type = ARPHRD_IEEE802;
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dev->hard_header_len = FC_HLEN;
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dev->mtu = 2024;
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dev->addr_len = FC_ALEN;
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dev->tx_queue_len = 100; /* Long queues on fc */
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dev->flags = IFF_BROADCAST;
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memset(dev->broadcast, 0xFF, FC_ALEN);
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}
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/**
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* alloc_fcdev - Register fibre channel device
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* @sizeof_priv: Size of additional driver-private structure to be allocated
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* for this fibre channel device
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*
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* Fill in the fields of the device structure with fibre channel-generic values.
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*
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* Constructs a new net device, complete with a private data area of
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* size @sizeof_priv. A 32-byte (not bit) alignment is enforced for
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* this private data area.
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*/
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struct net_device *alloc_fcdev(int sizeof_priv)
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{
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return alloc_netdev(sizeof_priv, "fc%d", NET_NAME_UNKNOWN, fc_setup);
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}
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EXPORT_SYMBOL(alloc_fcdev);
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