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Diffstat (limited to 'i386/i386at/gpl/linux/linux_net.c')
-rw-r--r--i386/i386at/gpl/linux/linux_net.c520
1 files changed, 0 insertions, 520 deletions
diff --git a/i386/i386at/gpl/linux/linux_net.c b/i386/i386at/gpl/linux/linux_net.c
deleted file mode 100644
index 6a83a98f..00000000
--- a/i386/i386at/gpl/linux/linux_net.c
+++ /dev/null
@@ -1,520 +0,0 @@
-/*
- * Linux network driver support.
- *
- * Copyright (C) 1996 The University of Utah and the Computer Systems
- * Laboratory at the University of Utah (CSL)
- *
- * 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, or (at your option)
- * any later version.
- *
- * This program 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, 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Author: Shantanu Goel, University of Utah CSL
- */
-
-/*
- * INET An implementation of the TCP/IP protocol suite for the LINUX
- * operating system. INET is implemented using the BSD Socket
- * interface as the means of communication with the user level.
- *
- * Ethernet-type device handling.
- *
- * Version: @(#)eth.c 1.0.7 05/25/93
- *
- * Authors: Ross Biro, <bir7@leland.Stanford.Edu>
- * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
- * Mark Evans, <evansmp@uhura.aston.ac.uk>
- * Florian La Roche, <rzsfl@rz.uni-sb.de>
- * Alan Cox, <gw4pts@gw4pts.ampr.org>
- *
- * Fixes:
- * Mr Linux : Arp problems
- * Alan Cox : Generic queue tidyup (very tiny here)
- * Alan Cox : eth_header ntohs should be htons
- * Alan Cox : eth_rebuild_header missing an htons and
- * minor other things.
- * Tegge : Arp bug fixes.
- * Florian : Removed many unnecessary functions, code cleanup
- * and changes for new arp and skbuff.
- * Alan Cox : Redid header building to reflect new format.
- * Alan Cox : ARP only when compiled with CONFIG_INET
- * Greg Page : 802.2 and SNAP stuff.
- * Alan Cox : MAC layer pointers/new format.
- * Paul Gortmaker : eth_copy_and_sum shouldn't csum padding.
- * Alan Cox : Protect against forwarding explosions with
- * older network drivers and IFF_ALLMULTI
- *
- * 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.
- */
-
-#include <sys/types.h>
-
-#include <mach/mach_types.h>
-#include <mach/kern_return.h>
-#include <mach/mig_errors.h>
-#include <mach/port.h>
-#include <mach/vm_param.h>
-#include <mach/notify.h>
-
-#include <ipc/ipc_port.h>
-#include <ipc/ipc_space.h>
-
-#include <vm/vm_map.h>
-#include <vm/vm_kern.h>
-#include <vm/vm_page.h>
-
-#include <device/device_types.h>
-#include <device/device_port.h>
-#include <device/if_hdr.h>
-#include <device/if_ether.h>
-#include <device/if_hdr.h>
-#include <device/net_io.h>
-#include "device_reply.h"
-
-#include <i386at/dev_hdr.h>
-#include <i386at/device_emul.h>
-
-#include <i386at/gpl/linux/linux_emul.h>
-
-#define MACH_INCLUDE
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/malloc.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-
-/* One of these is associated with each instance of a device. */
-struct net_data
-{
- ipc_port_t port; /* device port */
- struct ifnet ifnet; /* Mach ifnet structure (needed for filters) */
- struct device device; /* generic device structure */
- struct linux_device *dev; /* Linux network device structure */
-};
-
-/* List of sk_buffs waiting to be freed. */
-static struct sk_buff_head skb_done_list;
-
-/* Forward declarations. */
-
-extern struct device_emulation_ops linux_net_emulation_ops;
-
-static int print_packet_size = 0;
-
-/* Linux kernel network support routines. */
-
-/* Requeue packet SKB for transmission after the interface DEV
- has timed out. The priority of the packet is PRI.
- In Mach, we simply drop the packet like the native drivers. */
-void
-dev_queue_xmit (struct sk_buff *skb, struct linux_device *dev, int pri)
-{
- dev_kfree_skb (skb, FREE_WRITE);
-}
-
-/* Close the device DEV. */
-int
-dev_close (struct linux_device *dev)
-{
- return 0;
-}
-
-/* Network software interrupt handler. */
-void
-net_bh (void *xxx)
-{
- int len;
- struct sk_buff *skb;
- struct linux_device *dev;
-
- /* Start transmission on interfaces. */
- for (dev = dev_base; dev; dev = dev->next)
- {
- if (dev->base_addr && dev->base_addr != 0xffe0)
- while (1)
- {
- skb = skb_dequeue (&dev->buffs[0]);
- if (skb)
- {
- len = skb->len;
- if ((*dev->hard_start_xmit) (skb, dev))
- {
- skb_queue_head (&dev->buffs[0], skb);
- mark_bh (NET_BH);
- break;
- }
- else if (print_packet_size)
- printf ("net_bh: length %d\n", len);
- }
- else
- break;
- }
- }
-}
-
-/* Free all sk_buffs on the done list.
- This routine is called by the iodone thread in ds_routines.c. */
-void
-free_skbuffs ()
-{
- struct sk_buff *skb;
-
- while (1)
- {
- skb = skb_dequeue (&skb_done_list);
- if (skb)
- {
- if (skb->copy)
- {
- vm_map_copy_discard (skb->copy);
- skb->copy = NULL;
- }
- if (IP_VALID (skb->reply))
- {
- ds_device_write_reply (skb->reply, skb->reply_type, 0, skb->len);
- skb->reply = IP_NULL;
- }
- dev_kfree_skb (skb, FREE_WRITE);
- }
- else
- break;
- }
-}
-
-/* Allocate an sk_buff with SIZE bytes of data space. */
-struct sk_buff *
-alloc_skb (unsigned int size, int priority)
-{
- return dev_alloc_skb (size);
-}
-
-/* Free SKB. */
-void
-kfree_skb (struct sk_buff *skb, int priority)
-{
- dev_kfree_skb (skb, priority);
-}
-
-/* Allocate an sk_buff with SIZE bytes of data space. */
-struct sk_buff *
-dev_alloc_skb (unsigned int size)
-{
- struct sk_buff *skb;
-
- skb = linux_kmalloc (sizeof (struct sk_buff) + size, GFP_KERNEL);
- if (skb)
- {
- skb->dev = NULL;
- skb->reply = IP_NULL;
- skb->copy = NULL;
- skb->len = size;
- skb->prev = skb->next = NULL;
- skb->list = NULL;
- if (size)
- {
- skb->data = (unsigned char *) (skb + 1);
- skb->tail = skb->data + size;
- }
- else
- skb->data = skb->tail = NULL;
- skb->head = skb->data;
- }
- return skb;
-}
-
-/* Free the sk_buff SKB. */
-void
-dev_kfree_skb (struct sk_buff *skb, int mode)
-{
- unsigned flags;
- extern void *io_done_list;
-
- /* Queue sk_buff on done list if there is a
- page list attached or we need to send a reply.
- Wakeup the iodone thread to process the list. */
- if (skb->copy || IP_VALID (skb->reply))
- {
- skb_queue_tail (&skb_done_list, skb);
- save_flags (flags);
- thread_wakeup ((event_t) &io_done_list);
- restore_flags (flags);
- return;
- }
- linux_kfree (skb);
-}
-
-/* Accept packet SKB received on an interface. */
-void
-netif_rx (struct sk_buff *skb)
-{
- ipc_kmsg_t kmsg;
- struct ether_header *eh;
- struct packet_header *ph;
- struct linux_device *dev = skb->dev;
-
- assert (skb != NULL);
-
- if (print_packet_size)
- printf ("netif_rx: length %d\n", skb->len);
-
- /* Allocate a kernel message buffer. */
- kmsg = net_kmsg_get ();
- if (! kmsg)
- {
- dev_kfree_skb (skb, FREE_READ);
- return;
- }
-
- /* Copy packet into message buffer. */
- eh = (struct ether_header *) (net_kmsg (kmsg)->header);
- ph = (struct packet_header *) (net_kmsg (kmsg)->packet);
- memcpy (eh, skb->data, sizeof (struct ether_header));
- memcpy (ph + 1, skb->data + sizeof (struct ether_header),
- skb->len - sizeof (struct ether_header));
- ph->type = eh->ether_type;
- ph->length = (skb->len - sizeof (struct ether_header)
- + sizeof (struct packet_header));
-
- dev_kfree_skb (skb, FREE_READ);
-
- /* Pass packet up to the microkernel. */
- net_packet (&dev->net_data->ifnet, kmsg,
- ph->length, ethernet_priority (kmsg));
-}
-
-/* Mach device interface routines. */
-
-/* Return a send right associated with network device ND. */
-static ipc_port_t
-dev_to_port (void *nd)
-{
- return (nd
- ? ipc_port_make_send (((struct net_data *) nd)->port)
- : IP_NULL);
-}
-
-static io_return_t
-device_open (ipc_port_t reply_port, mach_msg_type_name_t reply_port_type,
- dev_mode_t mode, char *name, device_t *devp)
-{
- io_return_t err = D_SUCCESS;
- ipc_port_t notify;
- struct ifnet *ifp;
- struct linux_device *dev;
- struct net_data *nd;
-
- /* Search for the device. */
- for (dev = dev_base; dev; dev = dev->next)
- if (dev->base_addr
- && dev->base_addr != 0xffe0
- && ! strcmp (name, dev->name))
- break;
- if (! dev)
- return D_NO_SUCH_DEVICE;
-
- /* Allocate and initialize device data if this is the first open. */
- nd = dev->net_data;
- if (! nd)
- {
- dev->net_data = nd = ((struct net_data *)
- kalloc (sizeof (struct net_data)));
- if (! nd)
- {
- err = D_NO_MEMORY;
- goto out;
- }
- nd->dev = dev;
- nd->device.emul_data = nd;
- nd->device.emul_ops = &linux_net_emulation_ops;
- nd->port = ipc_port_alloc_kernel ();
- if (nd->port == IP_NULL)
- {
- err = KERN_RESOURCE_SHORTAGE;
- goto out;
- }
- ipc_kobject_set (nd->port, (ipc_kobject_t) &nd->device, IKOT_DEVICE);
- notify = ipc_port_make_sonce (nd->port);
- ip_lock (nd->port);
- ipc_port_nsrequest (nd->port, 1, notify, &notify);
- assert (notify == IP_NULL);
-
- ifp = &nd->ifnet;
- ifp->if_unit = dev->name[strlen (dev->name) - 1] - '0';
- ifp->if_flags = IFF_UP|IFF_RUNNING;
- ifp->if_mtu = dev->mtu;
- ifp->if_header_size = dev->hard_header_len;
- ifp->if_header_format = dev->type;
- ifp->if_address_size = dev->addr_len;
- ifp->if_address = dev->dev_addr;
- if_init_queues (ifp);
-
- if (dev->open)
- {
- linux_intr_pri = SPL6;
- if ((*dev->open) (dev))
- err = D_NO_SUCH_DEVICE;
- }
-
- out:
- if (err)
- {
- if (nd)
- {
- if (nd->port != IP_NULL)
- {
- ipc_kobject_set (nd->port, IKO_NULL, IKOT_NONE);
- ipc_port_dealloc_kernel (nd->port);
- }
- kfree ((vm_offset_t) nd, sizeof (struct net_data));
- nd = NULL;
- dev->net_data = NULL;
- }
- }
- else
- {
- dev->flags |= LINUX_IFF_UP|LINUX_IFF_RUNNING;
- skb_queue_head_init (&dev->buffs[0]);
- }
- if (IP_VALID (reply_port))
- ds_device_open_reply (reply_port, reply_port_type,
- err, dev_to_port (nd));
- return MIG_NO_REPLY;
- }
-
- *devp = &nd->device;
- return D_SUCCESS;
-}
-
-static io_return_t
-device_write (void *d, ipc_port_t reply_port,
- mach_msg_type_name_t reply_port_type, dev_mode_t mode,
- recnum_t bn, io_buf_ptr_t data, unsigned int count,
- int *bytes_written)
-{
- unsigned char *p;
- int i, amt, skblen, s;
- io_return_t err = 0;
- vm_map_copy_t copy = (vm_map_copy_t) data;
- struct net_data *nd = d;
- struct linux_device *dev = nd->dev;
- struct sk_buff *skb;
-
- if (count == 0 || count > dev->mtu + dev->hard_header_len)
- return D_INVALID_SIZE;
-
- /* Allocate a sk_buff. */
- amt = PAGE_SIZE - (copy->offset & PAGE_MASK);
- skblen = (amt >= count) ? 0 : count;
- skb = dev_alloc_skb (skblen);
- if (! skb)
- return D_NO_MEMORY;
-
- /* Copy user data. This is only required if it spans multiple pages. */
- if (skblen == 0)
- {
- assert (copy->cpy_npages == 1);
-
- skb->copy = copy;
- skb->data = ((void *) copy->cpy_page_list[0]->phys_addr
- + (copy->offset & PAGE_MASK));
- skb->len = count;
- skb->head = skb->data;
- skb->tail = skb->data + skb->len;
- }
- else
- {
- memcpy (skb->data,
- ((void *) copy->cpy_page_list[0]->phys_addr
- + (copy->offset & PAGE_MASK)),
- amt);
- count -= amt;
- p = skb->data + amt;
- for (i = 1; count > 0 && i < copy->cpy_npages; i++)
- {
- amt = PAGE_SIZE;
- if (amt > count)
- amt = count;
- memcpy (p, (void *) copy->cpy_page_list[i]->phys_addr, amt);
- count -= amt;
- p += amt;
- }
-
- assert (count == 0);
-
- vm_map_copy_discard (copy);
- }
-
- skb->dev = dev;
- skb->reply = reply_port;
- skb->reply_type = reply_port_type;
-
- /* Queue packet for transmission and schedule a software interrupt. */
- s = splimp ();
- if (dev->buffs[0].next != (struct sk_buff *) &dev->buffs[0]
- || (*dev->hard_start_xmit) (skb, dev))
- {
- __skb_queue_tail (&dev->buffs[0], skb);
- mark_bh (NET_BH);
- }
- splx (s);
-
- return MIG_NO_REPLY;
-}
-
-static io_return_t
-device_get_status (void *d, dev_flavor_t flavor, dev_status_t status,
- mach_msg_type_number_t *count)
-{
- return net_getstat (&((struct net_data *) d)->ifnet, flavor, status, count);
-}
-
-static io_return_t
-device_set_filter (void *d, ipc_port_t port, int priority,
- filter_t *filter, unsigned filter_count)
-{
- return net_set_filter (&((struct net_data *) d)->ifnet,
- port, priority, filter, filter_count);
-}
-
-struct device_emulation_ops linux_net_emulation_ops =
-{
- NULL,
- NULL,
- dev_to_port,
- device_open,
- NULL,
- device_write,
- NULL,
- NULL,
- NULL,
- NULL,
- device_get_status,
- device_set_filter,
- NULL,
- NULL,
- NULL,
- NULL
-};
-
-/* Do any initialization required for network devices. */
-void
-linux_net_emulation_init ()
-{
- skb_queue_head_init (&skb_done_list);
-}
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