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/*
Copyright (C) 1995, 1996 Free Software Foundation, Inc.
Written by Michael I. Bushnell, p/BSG.
This file is part of the GNU Hurd.
The GNU Hurd 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, or (at
your option) any later version.
The GNU Hurd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */
#include <device/device.h>
#include <device/net_status.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <netinet/in.h>
#include <string.h>
#include "pfinet.h"
static char *ethername;
device_t ether_port;
struct port_class *etherreadclass;
struct port_info *readpt;
mach_port_t readptname;
struct device ether_dev;
struct enet_statistics retbuf;
/* Mach doesn't provide this. DAMN. */
struct enet_statistics *
ethernet_get_stats (struct device *dev)
{
return &retbuf;
}
int
ethernet_stop (struct device *dev)
{
return 0;
}
void
ethernet_set_multi (struct device *dev, int numaddrs, void *addrs)
{
assert (numaddrs == 0);
}
static short ether_filter[] =
{
NETF_PUSHLIT | NETF_NOP,
1,
NETF_PUSHZERO | NETF_OR,
};
static int ether_filter_len = 3;
int
ethernet_open (struct device *dev)
{
if (ether_port != MACH_PORT_NULL)
return 0;
etherreadclass = ports_create_class (0, 0);
readpt = ports_allocate_port (pfinet_bucket, sizeof (struct port_info),
etherreadclass);
readptname = ports_get_right (readpt);
mach_port_insert_right (mach_task_self (), readptname, readptname,
MACH_MSG_TYPE_MAKE_SEND);
mach_port_set_qlimit (mach_task_self (), readptname, MACH_PORT_QLIMIT_MAX);
device_open (master_device, D_WRITE | D_READ, ethername, ðer_port);
device_set_filter (ether_port, ports_get_right (readpt),
MACH_MSG_TYPE_MAKE_SEND, 0,
ether_filter, ether_filter_len);
return 0;
}
int
ethernet_demuxer (mach_msg_header_t *inp,
mach_msg_header_t *outp)
{
struct net_rcv_msg *msg = (struct net_rcv_msg *) inp;
struct sk_buff *skb;
int datalen;
if (inp->msgh_id != NET_RCV_MSG_ID)
return 0;
if (inp->msgh_local_port != readptname)
{
if (inp->msgh_remote_port != MACH_PORT_NULL)
mach_port_deallocate (mach_task_self (), inp->msgh_remote_port);
return 1;
}
datalen = ETH_HLEN
+ msg->packet_type.msgt_number - sizeof (struct packet_header);
mutex_lock (&global_lock);
skb = alloc_skb (datalen, GFP_ATOMIC);
skb->len = datalen;
skb->dev = ðer_dev;
/* Copy the two parts of the frame into the buffer. */
bcopy (msg->header, skb->data, ETH_HLEN);
bcopy (msg->packet + sizeof (struct packet_header),
skb->data + ETH_HLEN,
datalen - ETH_HLEN);
/* Drop it on the queue. */
netif_rx (skb);
mutex_unlock (&global_lock);
return 1;
}
/* Transmit an ethernet frame */
int
ethernet_xmit (struct sk_buff *skb, struct device *dev)
{
u_int count;
int err;
err = device_write (ether_port, D_NOWAIT, 0, skb->data, skb->len, &count);
assert (err == 0);
assert (count == skb->len);
dev_kfree_skb (skb, FREE_WRITE);
return 0;
}
void
setup_ethernet_device (char *name)
{
struct net_status netstat;
u_int count;
int net_address[2];
int i;
ethername = name;
/* Interface buffers. */
ether_dev.name = ethername;
for (i = 0; i < DEV_NUMBUFFS; i++)
skb_queue_head_init (ðer_dev.buffs[i]);
/* Functions */
ether_dev.open = ethernet_open;
ether_dev.stop = ethernet_stop;
ether_dev.hard_start_xmit = ethernet_xmit;
ether_dev.hard_header = eth_header;
ether_dev.rebuild_header = eth_rebuild_header;
ether_dev.type_trans = eth_type_trans;
ether_dev.get_stats = ethernet_get_stats;
ether_dev.set_multicast_list = ethernet_set_multi;
/* Some more fields */
ether_dev.type = ARPHRD_ETHER;
ether_dev.hard_header_len = sizeof (struct ethhdr);
ether_dev.addr_len = ETH_ALEN;
for (i = 0; i < 6; i++)
ether_dev.broadcast[i] = 0xff;
ether_dev.flags = IFF_BROADCAST | IFF_MULTICAST;
ether_dev.family = AF_INET; /* hmm. */
ether_dev.pa_addr = ether_dev.pa_brdaddr = ether_dev.pa_mask = 0;
ether_dev.pa_alen = sizeof (unsigned long);
ethernet_open (ðer_dev);
/* Fetch hardware information */
count = NET_STATUS_COUNT;
device_get_status (ether_port, NET_STATUS, (dev_status_t) &netstat, &count);
ether_dev.mtu = netstat.max_packet_size;
assert (netstat.header_format == HDR_ETHERNET);
assert (netstat.header_size == ETH_HLEN);
assert (netstat.address_size == ETH_ALEN);
count = 2;
assert (count * sizeof (int) >= ETH_ALEN);
device_get_status (ether_port, NET_ADDRESS, net_address, &count);
net_address[0] = ntohl (net_address[0]);
net_address[1] = ntohl (net_address[1]);
bcopy (net_address, ether_dev.dev_addr, ETH_ALEN);
/* That should be enough. */
ether_dev.next = dev_base;
dev_base = ðer_dev;
}
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