diff options
Diffstat (limited to 'qemu/roms/ipxe/src/drivers/linux')
-rw-r--r-- | qemu/roms/ipxe/src/drivers/linux/linux.c | 153 | ||||
-rw-r--r-- | qemu/roms/ipxe/src/drivers/linux/tap.c | 253 |
2 files changed, 0 insertions, 406 deletions
diff --git a/qemu/roms/ipxe/src/drivers/linux/linux.c b/qemu/roms/ipxe/src/drivers/linux/linux.c deleted file mode 100644 index 83546b27e..000000000 --- a/qemu/roms/ipxe/src/drivers/linux/linux.c +++ /dev/null @@ -1,153 +0,0 @@ -/* - * Copyright (C) 2010 Piotr Jaroszyński <p.jaroszynski@gmail.com> - * - * 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 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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -FILE_LICENCE(GPL2_OR_LATER); - -/** @file - * - * Linux root_device and root_driver. - */ - -#include <errno.h> -#include <string.h> -#include <stdio.h> -#include <ipxe/linux.h> -#include <ipxe/malloc.h> -#include <ipxe/settings.h> - -LIST_HEAD(linux_device_requests); -LIST_HEAD(linux_global_settings); - -/** Go over the device requests looking for a matching linux driver to handle them. */ -static int linux_probe(struct root_device *rootdev) -{ - struct linux_device_request *request; - struct linux_driver *driver; - struct linux_device *device = NULL; - int rc; - - /* Apply global settings */ - linux_apply_settings(&linux_global_settings, NULL); - - list_for_each_entry(request, &linux_device_requests, list) { - if (! device) - device = zalloc(sizeof(*device)); - - if (! device) - return -ENOMEM; - - rc = 1; - - for_each_table_entry(driver, LINUX_DRIVERS) { - if ((rc = strcmp(driver->name, request->driver)) == 0) - break; - } - - if (rc != 0) { - printf("Linux driver '%s' not found\n", request->driver); - continue; - } - - if (! driver->can_probe) { - printf("Driver '%s' cannot handle any more devices\n", driver->name); - continue; - } - - /* We found a matching driver so add the device to the hierarchy */ - list_add(&device->dev.siblings, &rootdev->dev.children); - device->dev.parent = &rootdev->dev; - INIT_LIST_HEAD(&device->dev.children); - - if (driver->probe(device, request) == 0) { - device->driver = driver; - device->dev.driver_name = driver->name; - /* Driver handled the device so release ownership */ - device = NULL; - } else { - /* Driver failed to handle the device so remove it from the hierarchy - * and reuse the object */ - list_del(&device->dev.siblings); - } - }; - - free(device); - - return 0; -} - -/** Remove all the linux devices registered in probe() */ -static void linux_remove(struct root_device *rootdev) -{ - struct linux_device *device; - struct linux_device *tmp; - - list_for_each_entry_safe(device, tmp, &rootdev->dev.children, dev.siblings) { - list_del(&device->dev.siblings); - device->driver->remove(device); - free(device); - } -} - -/** Linux root driver */ -static struct root_driver linux_root_driver = { - .probe = linux_probe, - .remove = linux_remove, -}; - -/** Linux root device */ -struct root_device linux_root_device __root_device = { - .dev = { .name = "linux" }, - .driver = &linux_root_driver, -}; - -struct linux_setting *linux_find_setting(char *name, struct list_head *settings) -{ - struct linux_setting *setting; - struct linux_setting *result = NULL; - - /* Find the last occurrence of a setting with the specified name */ - list_for_each_entry(setting, settings, list) { - if (strcmp(setting->name, name) == 0) { - result = setting; - } - } - - return result; -} - -void linux_apply_settings(struct list_head *new_settings, struct settings *settings_block) -{ - struct linux_setting *setting; - int rc; - - list_for_each_entry(setting, new_settings, list) { - /* Skip already applied settings */ - if (setting->applied) - continue; - - struct setting *s = find_setting(setting->name); - if (s) { - rc = storef_setting(settings_block, find_setting(setting->name), setting->value); - if (rc != 0) - DBG("linux storing setting '%s' = '%s' failed\n", setting->name, setting->value); - setting->applied = 1; - } else { - DBG("linux unknown setting '%s'\n", setting->name); - } - } -} diff --git a/qemu/roms/ipxe/src/drivers/linux/tap.c b/qemu/roms/ipxe/src/drivers/linux/tap.c deleted file mode 100644 index 979436654..000000000 --- a/qemu/roms/ipxe/src/drivers/linux/tap.c +++ /dev/null @@ -1,253 +0,0 @@ -/* - * Copyright (C) 2010 Piotr Jaroszyński <p.jaroszynski@gmail.com> - * - * 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 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, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include <errno.h> -#include <string.h> -#include <stdio.h> -#include <linux_api.h> -#include <ipxe/list.h> -#include <ipxe/linux.h> -#include <ipxe/malloc.h> -#include <ipxe/device.h> -#include <ipxe/netdevice.h> -#include <ipxe/iobuf.h> -#include <ipxe/ethernet.h> -#include <ipxe/settings.h> -#include <ipxe/socket.h> - -/* This hack prevents pre-2.6.32 headers from redefining struct sockaddr */ -#define __GLIBC__ 2 -#include <linux/socket.h> -#undef __GLIBC__ -#include <linux/if.h> -#include <linux/if_ether.h> -#include <linux/if_tun.h> - -#define RX_BUF_SIZE 1536 - -/** @file - * - * The TAP driver. - * - * The TAP is a Virtual Ethernet network device. - */ - -struct tap_nic { - /** Tap interface name */ - char * interface; - /** File descriptor of the opened tap device */ - int fd; -}; - -/** Open the TAP device */ -static int tap_open(struct net_device * netdev) -{ - struct tap_nic * nic = netdev->priv; - struct ifreq ifr; - int ret; - - nic->fd = linux_open("/dev/net/tun", O_RDWR); - if (nic->fd < 0) { - DBGC(nic, "tap %p open('/dev/net/tun') = %d (%s)\n", nic, nic->fd, linux_strerror(linux_errno)); - return nic->fd; - } - - memset(&ifr, 0, sizeof(ifr)); - /* IFF_NO_PI for no extra packet information */ - ifr.ifr_flags = IFF_TAP | IFF_NO_PI; - strncpy(ifr.ifr_name, nic->interface, IFNAMSIZ); - DBGC(nic, "tap %p interface = '%s'\n", nic, nic->interface); - - ret = linux_ioctl(nic->fd, TUNSETIFF, &ifr); - - if (ret != 0) { - DBGC(nic, "tap %p ioctl(%d, ...) = %d (%s)\n", nic, nic->fd, ret, linux_strerror(linux_errno)); - linux_close(nic->fd); - return ret; - } - - /* Set nonblocking mode to make tap_poll easier */ - ret = linux_fcntl(nic->fd, F_SETFL, O_NONBLOCK); - - if (ret != 0) { - DBGC(nic, "tap %p fcntl(%d, ...) = %d (%s)\n", nic, nic->fd, ret, linux_strerror(linux_errno)); - linux_close(nic->fd); - return ret; - } - - return 0; -} - -/** Close the TAP device */ -static void tap_close(struct net_device *netdev) -{ - struct tap_nic * nic = netdev->priv; - linux_close(nic->fd); -} - -/** - * Transmit an ethernet packet. - * - * The packet can be written to the TAP device and marked as complete immediately. - */ -static int tap_transmit(struct net_device *netdev, struct io_buffer *iobuf) -{ - struct tap_nic * nic = netdev->priv; - int rc; - - /* Pad and align packet */ - iob_pad(iobuf, ETH_ZLEN); - - rc = linux_write(nic->fd, iobuf->data, iobuf->tail - iobuf->data); - DBGC2(nic, "tap %p wrote %d bytes\n", nic, rc); - netdev_tx_complete(netdev, iobuf); - - return 0; -} - -/** Poll for new packets */ -static void tap_poll(struct net_device *netdev) -{ - struct tap_nic * nic = netdev->priv; - struct pollfd pfd; - struct io_buffer * iobuf; - int r; - - pfd.fd = nic->fd; - pfd.events = POLLIN; - if (linux_poll(&pfd, 1, 0) == -1) { - DBGC(nic, "tap %p poll failed (%s)\n", nic, linux_strerror(linux_errno)); - return; - } - if ((pfd.revents & POLLIN) == 0) - return; - - /* At this point we know there is at least one new packet to be read */ - - iobuf = alloc_iob(RX_BUF_SIZE); - if (! iobuf) - goto allocfail; - - while ((r = linux_read(nic->fd, iobuf->data, RX_BUF_SIZE)) > 0) { - DBGC2(nic, "tap %p read %d bytes\n", nic, r); - - iob_put(iobuf, r); - netdev_rx(netdev, iobuf); - - iobuf = alloc_iob(RX_BUF_SIZE); - if (! iobuf) - goto allocfail; - } - - free_iob(iobuf); - return; - -allocfail: - DBGC(nic, "tap %p alloc_iob failed\n", nic); -} - -/** - * Set irq. - * - * Not used on linux, provide a dummy implementation. - */ -static void tap_irq(struct net_device *netdev, int enable) -{ - struct tap_nic *nic = netdev->priv; - - DBGC(nic, "tap %p irq enable = %d\n", nic, enable); -} - -/** Tap operations */ -static struct net_device_operations tap_operations = { - .open = tap_open, - .close = tap_close, - .transmit = tap_transmit, - .poll = tap_poll, - .irq = tap_irq, -}; - -/** Handle a device request for the tap driver */ -static int tap_probe(struct linux_device *device, struct linux_device_request *request) -{ - struct linux_setting *if_setting; - struct net_device *netdev; - struct tap_nic *nic; - int rc; - - netdev = alloc_etherdev(sizeof(*nic)); - if (! netdev) - return -ENOMEM; - - netdev_init(netdev, &tap_operations); - nic = netdev->priv; - linux_set_drvdata(device, netdev); - netdev->dev = &device->dev; - memset(nic, 0, sizeof(*nic)); - - /* Look for the mandatory if setting */ - if_setting = linux_find_setting("if", &request->settings); - - /* No if setting */ - if (! if_setting) { - printf("tap missing a mandatory if setting\n"); - rc = -EINVAL; - goto err_settings; - } - - nic->interface = if_setting->value; - snprintf ( device->dev.name, sizeof ( device->dev.name ), "%s", - nic->interface ); - device->dev.desc.bus_type = BUS_TYPE_TAP; - if_setting->applied = 1; - - /* Apply rest of the settings */ - linux_apply_settings(&request->settings, &netdev->settings.settings); - - /* Register network device */ - if ((rc = register_netdev(netdev)) != 0) - goto err_register; - - netdev_link_up(netdev); - - return 0; - -err_settings: - unregister_netdev(netdev); -err_register: - netdev_nullify(netdev); - netdev_put(netdev); - return rc; -} - -/** Remove the device */ -static void tap_remove(struct linux_device *device) -{ - struct net_device *netdev = linux_get_drvdata(device); - unregister_netdev(netdev); - netdev_nullify(netdev); - netdev_put(netdev); -} - -/** Tap linux_driver */ -struct linux_driver tap_driver __linux_driver = { - .name = "tap", - .probe = tap_probe, - .remove = tap_remove, - .can_probe = 1, -}; |