diff options
author | RajithaY <rajithax.yerrumsetty@intel.com> | 2017-04-25 03:31:15 -0700 |
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committer | Rajitha Yerrumchetty <rajithax.yerrumsetty@intel.com> | 2017-05-22 06:48:08 +0000 |
commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/roms/ipxe/src/drivers/linux/tap.c | |
parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/roms/ipxe/src/drivers/linux/tap.c')
-rw-r--r-- | qemu/roms/ipxe/src/drivers/linux/tap.c | 253 |
1 files changed, 0 insertions, 253 deletions
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 JaroszyĆski <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, -}; |