cregit-Linux how code gets into the kernel

Release 4.8 net/802/fc.c

Directory: net/802
 * 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 <>
 *              v 1.0 03/22/99

#include <asm/uaccess.h>
#include <linux/types.h>
#include <linux/kernel.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 <linux/export.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, const void *daddr, const void *saddr, unsigned int 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; }


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hideaki yoshifujihideaki yoshifuji10.43%120.00%
eric dumazeteric dumazet10.43%120.00%

static const struct header_ops fc_header_ops = { .create = fc_header, };
static void fc_setup(struct net_device *dev) { dev->header_ops = &fc_header_ops; 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); }


christoph hellwigchristoph hellwig6395.45%150.00%
stephen hemmingerstephen hemminger34.55%150.00%

/** * 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", NET_NAME_UNKNOWN, fc_setup); }


christoph hellwigchristoph hellwig2090.91%150.00%
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Overall Contributors

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Directory: net/802
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