diff options
Diffstat (limited to 'trunk/2.6.22/20015_xen3-auto-common.patch1')
| -rw-r--r-- | trunk/2.6.22/20015_xen3-auto-common.patch1 | 2101 |
1 files changed, 2101 insertions, 0 deletions
diff --git a/trunk/2.6.22/20015_xen3-auto-common.patch1 b/trunk/2.6.22/20015_xen3-auto-common.patch1 new file mode 100644 index 0000000..94a9b99 --- /dev/null +++ b/trunk/2.6.22/20015_xen3-auto-common.patch1 @@ -0,0 +1,2101 @@ +Subject: xen3 common +From: http://xenbits.xensource.com/xen-3.1-testing.hg (tip 15042) +Patch-mainline: obsolete +Acked-by: jbeulich@novell.com + +Index: head-2007-09-25/drivers/char/mem.c +=================================================================== +--- head-2007-09-25.orig/drivers/char/mem.c 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/drivers/char/mem.c 2007-09-25 14:35:02.000000000 +0200 +@@ -101,6 +101,7 @@ static inline int valid_mmap_phys_addr_r + } + #endif + ++#ifndef ARCH_HAS_DEV_MEM + /* + * This funcion reads the *physical* memory. The f_pos points directly to the + * memory location. +@@ -223,6 +224,7 @@ static ssize_t write_mem(struct file * f + *ppos += written; + return written; + } ++#endif + + #ifndef __HAVE_PHYS_MEM_ACCESS_PROT + static pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, +@@ -809,6 +811,7 @@ static int open_port(struct inode * inod + #define open_kmem open_mem + #define open_oldmem open_mem + ++#ifndef ARCH_HAS_DEV_MEM + static const struct file_operations mem_fops = { + .llseek = memory_lseek, + .read = read_mem, +@@ -817,6 +820,9 @@ static const struct file_operations mem_ + .open = open_mem, + .get_unmapped_area = get_unmapped_area_mem, + }; ++#else ++extern const struct file_operations mem_fops; ++#endif + + static const struct file_operations kmem_fops = { + .llseek = memory_lseek, +Index: head-2007-09-25/drivers/char/tpm/Makefile +=================================================================== +--- head-2007-09-25.orig/drivers/char/tpm/Makefile 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/drivers/char/tpm/Makefile 2007-09-25 14:35:02.000000000 +0200 +@@ -9,3 +9,5 @@ obj-$(CONFIG_TCG_TIS) += tpm_tis.o + obj-$(CONFIG_TCG_NSC) += tpm_nsc.o + obj-$(CONFIG_TCG_ATMEL) += tpm_atmel.o + obj-$(CONFIG_TCG_INFINEON) += tpm_infineon.o ++obj-$(CONFIG_TCG_XEN) += tpm_xenu.o ++tpm_xenu-y = tpm_xen.o tpm_vtpm.o +Index: head-2007-09-25/drivers/char/tpm/tpm.h +=================================================================== +--- head-2007-09-25.orig/drivers/char/tpm/tpm.h 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/drivers/char/tpm/tpm.h 2007-09-25 14:35:02.000000000 +0200 +@@ -106,6 +106,9 @@ struct tpm_chip { + struct dentry **bios_dir; + + struct list_head list; ++#ifdef CONFIG_XEN ++ void *priv; ++#endif + }; + + #define to_tpm_chip(n) container_of(n, struct tpm_chip, vendor) +@@ -122,6 +125,18 @@ static inline void tpm_write_index(int b + outb(value & 0xFF, base+1); + } + ++#ifdef CONFIG_XEN ++static inline void *chip_get_private(const struct tpm_chip *chip) ++{ ++ return chip->priv; ++} ++ ++static inline void chip_set_private(struct tpm_chip *chip, void *priv) ++{ ++ chip->priv = priv; ++} ++#endif ++ + extern void tpm_get_timeouts(struct tpm_chip *); + extern void tpm_gen_interrupt(struct tpm_chip *); + extern void tpm_continue_selftest(struct tpm_chip *); +Index: head-2007-09-25/drivers/char/tpm/tpm_vtpm.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ head-2007-09-25/drivers/char/tpm/tpm_vtpm.c 2007-09-25 14:35:02.000000000 +0200 +@@ -0,0 +1,542 @@ ++/* ++ * Copyright (C) 2006 IBM Corporation ++ * ++ * Authors: ++ * Stefan Berger <stefanb@us.ibm.com> ++ * ++ * Generic device driver part for device drivers in a virtualized ++ * environment. ++ * ++ * 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, version 2 of the ++ * License. ++ * ++ */ ++ ++#include <asm/uaccess.h> ++#include <linux/list.h> ++#include <linux/device.h> ++#include <linux/interrupt.h> ++#include <linux/platform_device.h> ++#include "tpm.h" ++#include "tpm_vtpm.h" ++ ++/* read status bits */ ++enum { ++ STATUS_BUSY = 0x01, ++ STATUS_DATA_AVAIL = 0x02, ++ STATUS_READY = 0x04 ++}; ++ ++struct transmission { ++ struct list_head next; ++ ++ unsigned char *request; ++ size_t request_len; ++ size_t request_buflen; ++ ++ unsigned char *response; ++ size_t response_len; ++ size_t response_buflen; ++ ++ unsigned int flags; ++}; ++ ++enum { ++ TRANSMISSION_FLAG_WAS_QUEUED = 0x1 ++}; ++ ++ ++enum { ++ DATAEX_FLAG_QUEUED_ONLY = 0x1 ++}; ++ ++ ++/* local variables */ ++ ++/* local function prototypes */ ++static int _vtpm_send_queued(struct tpm_chip *chip); ++ ++ ++/* ============================================================= ++ * Some utility functions ++ * ============================================================= ++ */ ++static void vtpm_state_init(struct vtpm_state *vtpms) ++{ ++ vtpms->current_request = NULL; ++ spin_lock_init(&vtpms->req_list_lock); ++ init_waitqueue_head(&vtpms->req_wait_queue); ++ INIT_LIST_HEAD(&vtpms->queued_requests); ++ ++ vtpms->current_response = NULL; ++ spin_lock_init(&vtpms->resp_list_lock); ++ init_waitqueue_head(&vtpms->resp_wait_queue); ++ ++ vtpms->disconnect_time = jiffies; ++} ++ ++ ++static inline struct transmission *transmission_alloc(void) ++{ ++ return kzalloc(sizeof(struct transmission), GFP_ATOMIC); ++} ++ ++static unsigned char * ++transmission_set_req_buffer(struct transmission *t, ++ unsigned char *buffer, size_t len) ++{ ++ if (t->request_buflen < len) { ++ kfree(t->request); ++ t->request = kmalloc(len, GFP_KERNEL); ++ if (!t->request) { ++ t->request_buflen = 0; ++ return NULL; ++ } ++ t->request_buflen = len; ++ } ++ ++ memcpy(t->request, buffer, len); ++ t->request_len = len; ++ ++ return t->request; ++} ++ ++static unsigned char * ++transmission_set_res_buffer(struct transmission *t, ++ const unsigned char *buffer, size_t len) ++{ ++ if (t->response_buflen < len) { ++ kfree(t->response); ++ t->response = kmalloc(len, GFP_ATOMIC); ++ if (!t->response) { ++ t->response_buflen = 0; ++ return NULL; ++ } ++ t->response_buflen = len; ++ } ++ ++ memcpy(t->response, buffer, len); ++ t->response_len = len; ++ ++ return t->response; ++} ++ ++static inline void transmission_free(struct transmission *t) ++{ ++ kfree(t->request); ++ kfree(t->response); ++ kfree(t); ++} ++ ++/* ============================================================= ++ * Interface with the lower layer driver ++ * ============================================================= ++ */ ++/* ++ * Lower layer uses this function to make a response available. ++ */ ++int vtpm_vd_recv(const struct tpm_chip *chip, ++ const unsigned char *buffer, size_t count, ++ void *ptr) ++{ ++ unsigned long flags; ++ int ret_size = 0; ++ struct transmission *t; ++ struct vtpm_state *vtpms; ++ ++ vtpms = (struct vtpm_state *)chip_get_private(chip); ++ ++ /* ++ * The list with requests must contain one request ++ * only and the element there must be the one that ++ * was passed to me from the front-end. ++ */ ++ spin_lock_irqsave(&vtpms->resp_list_lock, flags); ++ if (vtpms->current_request != ptr) { ++ spin_unlock_irqrestore(&vtpms->resp_list_lock, flags); ++ return 0; ++ } ++ ++ if ((t = vtpms->current_request)) { ++ transmission_free(t); ++ vtpms->current_request = NULL; ++ } ++ ++ t = transmission_alloc(); ++ if (t) { ++ if (!transmission_set_res_buffer(t, buffer, count)) { ++ transmission_free(t); ++ spin_unlock_irqrestore(&vtpms->resp_list_lock, flags); ++ return -ENOMEM; ++ } ++ ret_size = count; ++ vtpms->current_response = t; ++ wake_up_interruptible(&vtpms->resp_wait_queue); ++ } ++ spin_unlock_irqrestore(&vtpms->resp_list_lock, flags); ++ ++ return ret_size; ++} ++ ++ ++/* ++ * Lower layer indicates its status (connected/disconnected) ++ */ ++void vtpm_vd_status(const struct tpm_chip *chip, u8 vd_status) ++{ ++ struct vtpm_state *vtpms; ++ ++ vtpms = (struct vtpm_state *)chip_get_private(chip); ++ ++ vtpms->vd_status = vd_status; ++ if ((vtpms->vd_status & TPM_VD_STATUS_CONNECTED) == 0) { ++ vtpms->disconnect_time = jiffies; ++ } ++} ++ ++/* ============================================================= ++ * Interface with the generic TPM driver ++ * ============================================================= ++ */ ++static int vtpm_recv(struct tpm_chip *chip, u8 *buf, size_t count) ++{ ++ int rc = 0; ++ unsigned long flags; ++ struct vtpm_state *vtpms; ++ ++ vtpms = (struct vtpm_state *)chip_get_private(chip); ++ ++ /* ++ * Check if the previous operation only queued the command ++ * In this case there won't be a response, so I just ++ * return from here and reset that flag. In any other ++ * case I should receive a response from the back-end. ++ */ ++ spin_lock_irqsave(&vtpms->resp_list_lock, flags); ++ if ((vtpms->flags & DATAEX_FLAG_QUEUED_ONLY) != 0) { ++ vtpms->flags &= ~DATAEX_FLAG_QUEUED_ONLY; ++ spin_unlock_irqrestore(&vtpms->resp_list_lock, flags); ++ /* ++ * The first few commands (measurements) must be ++ * queued since it might not be possible to talk to the ++ * TPM, yet. ++ * Return a response of up to 30 '0's. ++ */ ++ ++ count = min_t(size_t, count, 30); ++ memset(buf, 0x0, count); ++ return count; ++ } ++ /* ++ * Check whether something is in the responselist and if ++ * there's nothing in the list wait for something to appear. ++ */ ++ ++ if (!vtpms->current_response) { ++ spin_unlock_irqrestore(&vtpms->resp_list_lock, flags); ++ interruptible_sleep_on_timeout(&vtpms->resp_wait_queue, ++ 1000); ++ spin_lock_irqsave(&vtpms->resp_list_lock ,flags); ++ } ++ ++ if (vtpms->current_response) { ++ struct transmission *t = vtpms->current_response; ++ vtpms->current_response = NULL; ++ rc = min(count, t->response_len); ++ memcpy(buf, t->response, rc); ++ transmission_free(t); ++ } ++ ++ spin_unlock_irqrestore(&vtpms->resp_list_lock, flags); ++ return rc; ++} ++ ++static int vtpm_send(struct tpm_chip *chip, u8 *buf, size_t count) ++{ ++ int rc = 0; ++ unsigned long flags; ++ struct transmission *t = transmission_alloc(); ++ struct vtpm_state *vtpms; ++ ++ vtpms = (struct vtpm_state *)chip_get_private(chip); ++ ++ if (!t) ++ return -ENOMEM; ++ /* ++ * If there's a current request, it must be the ++ * previous request that has timed out. ++ */ ++ spin_lock_irqsave(&vtpms->req_list_lock, flags); ++ if (vtpms->current_request != NULL) { ++ printk("WARNING: Sending although there is a request outstanding.\n" ++ " Previous request must have timed out.\n"); ++ transmission_free(vtpms->current_request); ++ vtpms->current_request = NULL; ++ } ++ spin_unlock_irqrestore(&vtpms->req_list_lock, flags); ++ ++ /* ++ * Queue the packet if the driver below is not ++ * ready, yet, or there is any packet already ++ * in the queue. ++ * If the driver below is ready, unqueue all ++ * packets first before sending our current ++ * packet. ++ * For each unqueued packet, except for the ++ * last (=current) packet, call the function ++ * tpm_xen_recv to wait for the response to come ++ * back. ++ */ ++ if ((vtpms->vd_status & TPM_VD_STATUS_CONNECTED) == 0) { ++ if (time_after(jiffies, ++ vtpms->disconnect_time + HZ * 10)) { ++ rc = -ENOENT; ++ } else { ++ goto queue_it; ++ } ++ } else { ++ /* ++ * Send all queued packets. ++ */ ++ if (_vtpm_send_queued(chip) == 0) { ++ ++ vtpms->current_request = t; ++ ++ rc = vtpm_vd_send(vtpms->tpm_private, ++ buf, ++ count, ++ t); ++ /* ++ * The generic TPM driver will call ++ * the function to receive the response. ++ */ ++ if (rc < 0) { ++ vtpms->current_request = NULL; ++ goto queue_it; ++ } ++ } else { ++queue_it: ++ if (!transmission_set_req_buffer(t, buf, count)) { ++ transmission_free(t); ++ rc = -ENOMEM; ++ goto exit; ++ } ++ /* ++ * An error occurred. Don't event try ++ * to send the current request. Just ++ * queue it. ++ */ ++ spin_lock_irqsave(&vtpms->req_list_lock, flags); ++ vtpms->flags |= DATAEX_FLAG_QUEUED_ONLY; ++ list_add_tail(&t->next, &vtpms->queued_requests); ++ spin_unlock_irqrestore(&vtpms->req_list_lock, flags); ++ } ++ } ++ ++exit: ++ return rc; ++} ++ ++ ++/* ++ * Send all queued requests. ++ */ ++static int _vtpm_send_queued(struct tpm_chip *chip) ++{ ++ int rc; ++ int error = 0; ++ long flags; ++ unsigned char buffer[1]; ++ struct vtpm_state *vtpms; ++ vtpms = (struct vtpm_state *)chip_get_private(chip); ++ ++ spin_lock_irqsave(&vtpms->req_list_lock, flags); ++ ++ while (!list_empty(&vtpms->queued_requests)) { ++ /* ++ * Need to dequeue them. ++ * Read the result into a dummy buffer. ++ */ ++ struct transmission *qt = (struct transmission *) ++ vtpms->queued_requests.next; ++ list_del(&qt->next); ++ vtpms->current_request = qt; ++ spin_unlock_irqrestore(&vtpms->req_list_lock, flags); ++ ++ rc = vtpm_vd_send(vtpms->tpm_private, ++ qt->request, ++ qt->request_len, ++ qt); ++ ++ if (rc < 0) { ++ spin_lock_irqsave(&vtpms->req_list_lock, flags); ++ if ((qt = vtpms->current_request) != NULL) { ++ /* ++ * requeue it at the beginning ++ * of the list ++ */ ++ list_add(&qt->next, ++ &vtpms->queued_requests); ++ } ++ vtpms->current_request = NULL; ++ error = 1; ++ break; ++ } ++ /* ++ * After this point qt is not valid anymore! ++ * It is freed when the front-end is delivering ++ * the data by calling tpm_recv ++ */ ++ /* ++ * Receive response into provided dummy buffer ++ */ ++ rc = vtpm_recv(chip, buffer, sizeof(buffer)); ++ spin_lock_irqsave(&vtpms->req_list_lock, flags); ++ } ++ ++ spin_unlock_irqrestore(&vtpms->req_list_lock, flags); ++ ++ return error; ++} ++ ++static void vtpm_cancel(struct tpm_chip *chip) ++{ ++ unsigned long flags; ++ struct vtpm_state *vtpms = (struct vtpm_state *)chip_get_private(chip); ++ ++ spin_lock_irqsave(&vtpms->resp_list_lock,flags); ++ ++ if (!vtpms->current_response && vtpms->current_request) { ++ spin_unlock_irqrestore(&vtpms->resp_list_lock, flags); ++ interruptible_sleep_on(&vtpms->resp_wait_queue); ++ spin_lock_irqsave(&vtpms->resp_list_lock,flags); ++ } ++ ++ if (vtpms->current_response) { ++ struct transmission *t = vtpms->current_response; ++ vtpms->current_response = NULL; ++ transmission_free(t); ++ } ++ ++ spin_unlock_irqrestore(&vtpms->resp_list_lock,flags); ++} ++ ++static u8 vtpm_status(struct tpm_chip *chip) ++{ ++ u8 rc = 0; ++ unsigned long flags; ++ struct vtpm_state *vtpms; ++ ++ vtpms = (struct vtpm_state *)chip_get_private(chip); ++ ++ spin_lock_irqsave(&vtpms->resp_list_lock, flags); ++ /* ++ * Data are available if: ++ * - there's a current response ++ * - the last packet was queued only (this is fake, but necessary to ++ * get the generic TPM layer to call the receive function.) ++ */ ++ if (vtpms->current_response || ++ 0 != (vtpms->flags & DATAEX_FLAG_QUEUED_ONLY)) { ++ rc = STATUS_DATA_AVAIL; ++ } else if (!vtpms->current_response && !vtpms->current_request) { ++ rc = STATUS_READY; ++ } ++ ++ spin_unlock_irqrestore(&vtpms->resp_list_lock, flags); ++ return rc; ++} ++ ++static struct file_operations vtpm_ops = { ++ .owner = THIS_MODULE, ++ .llseek = no_llseek, ++ .open = tpm_open, ++ .read = tpm_read, ++ .write = tpm_write, ++ .release = tpm_release, ++}; ++ ++static DEVICE_ATTR(pubek, S_IRUGO, tpm_show_pubek, NULL); ++static DEVICE_ATTR(pcrs, S_IRUGO, tpm_show_pcrs, NULL); ++static DEVICE_ATTR(enabled, S_IRUGO, tpm_show_enabled, NULL); ++static DEVICE_ATTR(active, S_IRUGO, tpm_show_active, NULL); ++static DEVICE_ATTR(owned, S_IRUGO, tpm_show_owned, NULL); ++static DEVICE_ATTR(temp_deactivated, S_IRUGO, tpm_show_temp_deactivated, ++ NULL); ++static DEVICE_ATTR(caps, S_IRUGO, tpm_show_caps, NULL); ++static DEVICE_ATTR(cancel, S_IWUSR |S_IWGRP, NULL, tpm_store_cancel); ++ ++static struct attribute *vtpm_attrs[] = { ++ &dev_attr_pubek.attr, ++ &dev_attr_pcrs.attr, ++ &dev_attr_enabled.attr, ++ &dev_attr_active.attr, ++ &dev_attr_owned.attr, ++ &dev_attr_temp_deactivated.attr, ++ &dev_attr_caps.attr, ++ &dev_attr_cancel.attr, ++ NULL, ++}; ++ ++static struct attribute_group vtpm_attr_grp = { .attrs = vtpm_attrs }; ++ ++#define TPM_LONG_TIMEOUT (10 * 60 * HZ) ++ ++static struct tpm_vendor_specific tpm_vtpm = { ++ .recv = vtpm_recv, ++ .send = vtpm_send, ++ .cancel = vtpm_cancel, ++ .status = vtpm_status, ++ .req_complete_mask = STATUS_BUSY | STATUS_DATA_AVAIL, ++ .req_complete_val = STATUS_DATA_AVAIL, ++ .req_canceled = STATUS_READY, ++ .attr_group = &vtpm_attr_grp, ++ .miscdev = { ++ .fops = &vtpm_ops, ++ }, ++ .duration = { ++ TPM_LONG_TIMEOUT, ++ TPM_LONG_TIMEOUT, ++ TPM_LONG_TIMEOUT, ++ }, ++}; ++ ++struct tpm_chip *init_vtpm(struct device *dev, ++ struct tpm_private *tp) ++{ ++ long rc; ++ struct tpm_chip *chip; ++ struct vtpm_state *vtpms; ++ ++ vtpms = kzalloc(sizeof(struct vtpm_state), GFP_KERNEL); ++ if (!vtpms) ++ return ERR_PTR(-ENOMEM); ++ ++ vtpm_state_init(vtpms); ++ vtpms->tpm_private = tp; ++ ++ chip = tpm_register_hardware(dev, &tpm_vtpm); ++ if (!chip) { ++ rc = -ENODEV; ++ goto err_free_mem; ++ } ++ ++ chip_set_private(chip, vtpms); ++ ++ return chip; ++ ++err_free_mem: ++ kfree(vtpms); ++ ++ return ERR_PTR(rc); ++} ++ ++void cleanup_vtpm(struct device *dev) ++{ ++ struct tpm_chip *chip = dev_get_drvdata(dev); ++ struct vtpm_state *vtpms = (struct vtpm_state*)chip_get_private(chip); ++ tpm_remove_hardware(dev); ++ kfree(vtpms); ++} +Index: head-2007-09-25/drivers/char/tpm/tpm_vtpm.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ head-2007-09-25/drivers/char/tpm/tpm_vtpm.h 2007-09-25 14:35:02.000000000 +0200 +@@ -0,0 +1,55 @@ ++#ifndef TPM_VTPM_H ++#define TPM_VTPM_H ++ ++struct tpm_chip; ++struct tpm_private; ++ ++struct vtpm_state { ++ struct transmission *current_request; ++ spinlock_t req_list_lock; ++ wait_queue_head_t req_wait_queue; ++ ++ struct list_head queued_requests; ++ ++ struct transmission *current_response; ++ spinlock_t resp_list_lock; ++ wait_queue_head_t resp_wait_queue; // processes waiting for responses ++ ++ u8 vd_status; ++ u8 flags; ++ ++ unsigned long disconnect_time; ++ ++ /* ++ * The following is a private structure of the underlying ++ * driver. It is passed as parameter in the send function. ++ */ ++ struct tpm_private *tpm_private; ++}; ++ ++ ++enum vdev_status { ++ TPM_VD_STATUS_DISCONNECTED = 0x0, ++ TPM_VD_STATUS_CONNECTED = 0x1 ++}; ++ ++/* this function is called from tpm_vtpm.c */ ++int vtpm_vd_send(struct tpm_private * tp, ++ const u8 * buf, size_t count, void *ptr); ++ ++/* these functions are offered by tpm_vtpm.c */ ++struct tpm_chip *init_vtpm(struct device *, ++ struct tpm_private *); ++void cleanup_vtpm(struct device *); ++int vtpm_vd_recv(const struct tpm_chip* chip, ++ const unsigned char *buffer, size_t count, void *ptr); ++void vtpm_vd_status(const struct tpm_chip *, u8 status); ++ ++static inline struct tpm_private *tpm_private_from_dev(struct device *dev) ++{ ++ struct tpm_chip *chip = dev_get_drvdata(dev); ++ struct vtpm_state *vtpms = chip_get_private(chip); ++ return vtpms->tpm_private; ++} ++ ++#endif +Index: head-2007-09-25/drivers/char/tpm/tpm_xen.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ head-2007-09-25/drivers/char/tpm/tpm_xen.c 2007-09-25 14:35:02.000000000 +0200 +@@ -0,0 +1,720 @@ ++/* ++ * Copyright (c) 2005, IBM Corporation ++ * ++ * Author: Stefan Berger, stefanb@us.ibm.com ++ * Grant table support: Mahadevan Gomathisankaran ++ * ++ * This code has been derived from drivers/xen/netfront/netfront.c ++ * ++ * Copyright (c) 2002-2004, K A Fraser ++ * ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License version 2 ++ * as published by the Free Software Foundation; or, when distributed ++ * separately from the Linux kernel or incorporated into other ++ * software packages, subject to the following license: ++ * ++ * Permission is hereby granted, free of charge, to any person obtaining a copy ++ * of this source file (the "Software"), to deal in the Software without ++ * restriction, including without limitation the rights to use, copy, modify, ++ * merge, publish, distribute, sublicense, and/or sell copies of the Software, ++ * and to permit persons to whom the Software is furnished to do so, subject to ++ * the following conditions: ++ * ++ * The above copyright notice and this permission notice shall be included in ++ * all copies or substantial portions of the Software. ++ * ++ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR ++ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, ++ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE ++ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER ++ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING ++ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS ++ * IN THE SOFTWARE. ++ */ ++ ++#include <linux/errno.h> ++#include <linux/err.h> ++#include <linux/interrupt.h> ++#include <linux/mutex.h> ++#include <asm/uaccess.h> ++#include <xen/evtchn.h> ++#include <xen/interface/grant_table.h> ++#include <xen/interface/io/tpmif.h> ++#include <xen/gnttab.h> ++#include <xen/xenbus.h> ++#include "tpm.h" ++#include "tpm_vtpm.h" ++ ++#undef DEBUG ++ ++/* local structures */ ++struct tpm_private { ++ struct tpm_chip *chip; ++ ++ tpmif_tx_interface_t *tx; ++ atomic_t refcnt; ++ unsigned int irq; ++ u8 is_connected; ++ u8 is_suspended; ++ ++ spinlock_t tx_lock; ++ ++ struct tx_buffer *tx_buffers[TPMIF_TX_RING_SIZE]; ++ ++ atomic_t tx_busy; ++ void *tx_remember; ++ ++ domid_t backend_id; ++ wait_queue_head_t wait_q; ++ ++ struct xenbus_device *dev; ++ int ring_ref; ++}; ++ ++struct tx_buffer { ++ unsigned int size; // available space in data ++ unsigned int len; // used space in data ++ unsigned char *data; // pointer to a page ++}; ++ ++ ++/* locally visible variables */ ++static grant_ref_t gref_head; ++static struct tpm_private *my_priv; ++ ++/* local function prototypes */ ++static irqreturn_t tpmif_int(int irq, ++ void *tpm_priv, ++ struct pt_regs *ptregs); ++static void tpmif_rx_action(unsigned long unused); ++static int tpmif_connect(struct xenbus_device *dev, ++ struct tpm_private *tp, ++ domid_t domid); ++static DECLARE_TASKLET(tpmif_rx_tasklet, tpmif_rx_action, 0); ++static int tpmif_allocate_tx_buffers(struct tpm_private *tp); ++static void tpmif_free_tx_buffers(struct tpm_private *tp); ++static void tpmif_set_connected_state(struct tpm_private *tp, ++ u8 newstate); ++static int tpm_xmit(struct tpm_private *tp, ++ const u8 * buf, size_t count, int userbuffer, ++ void *remember); ++static void destroy_tpmring(struct tpm_private *tp); ++void __exit tpmif_exit(void); ++ ++#define DPRINTK(fmt, args...) \ ++ pr_debug("xen_tpm_fr (%s:%d) " fmt, __FUNCTION__, __LINE__, ##args) ++#define IPRINTK(fmt, args...) \ ++ printk(KERN_INFO "xen_tpm_fr: " fmt, ##args) ++#define WPRINTK(fmt, args...) \ ++ printk(KERN_WARNING "xen_tpm_fr: " fmt, ##args) ++ ++#define GRANT_INVALID_REF 0 ++ ++ ++static inline int ++tx_buffer_copy(struct tx_buffer *txb, const u8 *src, int len, ++ int isuserbuffer) ++{ ++ int copied = len; ++ ++ if (len > txb->size) ++ copied = txb->size; ++ if (isuserbuffer) { ++ if (copy_from_user(txb->data, src, copied)) ++ return -EFAULT; ++ } else { ++ memcpy(txb->data, src, copied); ++ } ++ txb->len = len; ++ return copied; ++} ++ ++static inline struct tx_buffer *tx_buffer_alloc(void) ++{ ++ struct tx_buffer *txb; ++ ++ txb = kzalloc(sizeof(struct tx_buffer), GFP_KERNEL); ++ if (!txb) ++ return NULL; ++ ++ txb->len = 0; ++ txb->size = PAGE_SIZE; ++ txb->data = (unsigned char *)__get_free_page(GFP_KERNEL); ++ if (txb->data == NULL) { ++ kfree(txb); ++ txb = NULL; ++ } ++ ++ return txb; ++} ++ ++ ++static inline void tx_buffer_free(struct tx_buffer *txb) ++{ ++ if (txb) { ++ free_page((long)txb->data); ++ kfree(txb); ++ } ++} ++ ++/************************************************************** ++ Utility function for the tpm_private structure ++**************************************************************/ ++static void tpm_private_init(struct tpm_private *tp) ++{ ++ spin_lock_init(&tp->tx_lock); ++ init_waitqueue_head(&tp->wait_q); ++ atomic_set(&tp->refcnt, 1); ++} ++ ++static void tpm_private_put(void) ++{ ++ if (!atomic_dec_and_test(&my_priv->refcnt)) ++ return; ++ ++ tpmif_free_tx_buffers(my_priv); ++ kfree(my_priv); ++ my_priv = NULL; ++} ++ ++static struct tpm_private *tpm_private_get(void) ++{ ++ int err; ++ ++ if (my_priv) { ++ atomic_inc(&my_priv->refcnt); ++ return my_priv; ++ } ++ ++ my_priv = kzalloc(sizeof(struct tpm_private), GFP_KERNEL); ++ if (!my_priv) ++ return NULL; ++ ++ tpm_private_init(my_priv); ++ err = tpmif_allocate_tx_buffers(my_priv); ++ if (err < 0) ++ tpm_private_put(); ++ ++ return my_priv; ++} ++ ++/************************************************************** ++ ++ The interface to let the tpm plugin register its callback ++ function and send data to another partition using this module ++ ++**************************************************************/ ++ ++static DEFINE_MUTEX(suspend_lock); ++/* ++ * Send data via this module by calling this function ++ */ ++int vtpm_vd_send(struct tpm_private *tp, ++ const u8 * buf, size_t count, void *ptr) ++{ ++ int sent; ++ ++ mutex_lock(&suspend_lock); ++ sent = tpm_xmit(tp, buf, count, 0, ptr); ++ mutex_unlock(&suspend_lock); ++ ++ return sent; ++} ++ ++/************************************************************** ++ XENBUS support code ++**************************************************************/ ++ ++static int setup_tpmring(struct xenbus_device *dev, ++ struct tpm_private *tp) ++{ ++ tpmif_tx_interface_t *sring; ++ int err; ++ ++ tp->ring_ref = GRANT_INVALID_REF; ++ ++ sring = (void *)__get_free_page(GFP_KERNEL); ++ if (!sring) { ++ xenbus_dev_fatal(dev, -ENOMEM, "allocating shared ring"); ++ return -ENOMEM; ++ } ++ tp->tx = sring; ++ ++ err = xenbus_grant_ring(dev, virt_to_mfn(tp->tx)); ++ if (err < 0) { ++ free_page((unsigned long)sring); ++ tp->tx = NULL; ++ xenbus_dev_fatal(dev, err, "allocating grant reference"); ++ goto fail; ++ } ++ tp->ring_ref = err; ++ ++ err = tpmif_connect(dev, tp, dev->otherend_id); ++ if (err) ++ goto fail; ++ ++ return 0; ++fail: ++ destroy_tpmring(tp); ++ return err; ++} ++ ++ ++static void destroy_tpmring(struct tpm_private *tp) ++{ ++ tpmif_set_connected_state(tp, 0); ++ ++ if (tp->ring_ref != GRANT_INVALID_REF) { ++ gnttab_end_foreign_access(tp->ring_ref, 0, ++ (unsigned long)tp->tx); ++ tp->ring_ref = GRANT_INVALID_REF; ++ tp->tx = NULL; ++ } ++ ++ if (tp->irq) ++ unbind_from_irqhandler(tp->irq, tp); ++ ++ tp->irq = 0; ++} ++ ++ ++static int talk_to_backend(struct xenbus_device *dev, ++ struct tpm_private *tp) ++{ ++ const char *message = NULL; ++ int err; ++ struct xenbus_transaction xbt; ++ ++ err = setup_tpmring(dev, tp); ++ if (err) { ++ xenbus_dev_fatal(dev, err, "setting up ring"); ++ goto out; ++ } ++ ++again: ++ err = xenbus_transaction_start(&xbt); ++ if (err) { ++ xenbus_dev_fatal(dev, err, "starting transaction"); ++ goto destroy_tpmring; ++ } ++ ++ err = xenbus_printf(xbt, dev->nodename, ++ "ring-ref","%u", tp->ring_ref); ++ if (err) { ++ message = "writing ring-ref"; ++ goto abort_transaction; ++ } ++ ++ err = xenbus_printf(xbt, dev->nodename, "event-channel", "%u", ++ irq_to_evtchn_port(tp->irq)); ++ if (err) { ++ message = "writing event-channel"; ++ goto abort_transaction; ++ } ++ ++ err = xenbus_transaction_end(xbt, 0); ++ if (err == -EAGAIN) ++ goto again; ++ if (err) { ++ xenbus_dev_fatal(dev, err, "completing transaction"); ++ goto destroy_tpmring; ++ } ++ ++ xenbus_switch_state(dev, XenbusStateConnected); ++ ++ return 0; ++ ++abort_transaction: ++ xenbus_transaction_end(xbt, 1); ++ if (message) ++ xenbus_dev_error(dev, err, "%s", message); ++destroy_tpmring: ++ destroy_tpmring(tp); ++out: ++ return err; ++} ++ ++/** ++ * Callback received when the backend's state changes. ++ */ ++static void backend_changed(struct xenbus_device *dev, ++ enum xenbus_state backend_state) ++{ ++ struct tpm_private *tp = tpm_private_from_dev(&dev->dev); ++ DPRINTK("\n"); ++ ++ switch (backend_state) { ++ case XenbusStateInitialising: ++ case XenbusStateInitWait: ++ case XenbusStateInitialised: ++ case XenbusStateUnknown: ++ break; ++ ++ case XenbusStateConnected: ++ tpmif_set_connected_state(tp, 1); ++ break; ++ ++ case XenbusStateClosing: ++ tpmif_set_connected_state(tp, 0); ++ xenbus_frontend_closed(dev); ++ break; ++ ++ case XenbusStateClosed: ++ tpmif_set_connected_state(tp, 0); ++ if (tp->is_suspended == 0) ++ device_unregister(&dev->dev); ++ xenbus_frontend_closed(dev); ++ break; ++ } ++} ++ ++static int tpmfront_probe(struct xenbus_device *dev, ++ const struct xenbus_device_id *id) ++{ ++ int err; ++ int handle; ++ struct tpm_private *tp = tpm_private_get(); ++ ++ if (!tp) ++ return -ENOMEM; ++ ++ tp->chip = init_vtpm(&dev->dev, tp); ++ if (IS_ERR(tp->chip)) ++ return PTR_ERR(tp->chip); ++ ++ err = xenbus_scanf(XBT_NIL, dev->nodename, ++ "handle", "%i", &handle); ++ if (XENBUS_EXIST_ERR(err)) ++ return err; ++ ++ if (err < 0) { ++ xenbus_dev_fatal(dev,err,"reading virtual-device"); ++ return err; ++ } ++ ++ tp->dev = dev; ++ ++ err = talk_to_backend(dev, tp); ++ if (err) { ++ tpm_private_put(); ++ return err; ++ } ++ ++ return 0; ++} ++ ++ ++static int tpmfront_remove(struct xenbus_device *dev) ++{ ++ struct tpm_private *tp = tpm_private_from_dev(&dev->dev); ++ destroy_tpmring(tp); ++ cleanup_vtpm(&dev->dev); ++ return 0; ++} ++ ++static int tpmfront_suspend(struct xenbus_device *dev) ++{ ++ struct tpm_private *tp = tpm_private_from_dev(&dev->dev); ++ u32 ctr; ++ ++ /* Take the lock, preventing any application from sending. */ ++ mutex_lock(&suspend_lock); ++ tp->is_suspended = 1; ++ ++ for (ctr = 0; atomic_read(&tp->tx_busy); ctr++) { ++ if ((ctr % 10) == 0) ++ printk("TPM-FE [INFO]: Waiting for outstanding " ++ "request.\n"); ++ /* Wait for a request to be responded to. */ ++ interruptible_sleep_on_timeout(&tp->wait_q, 100); ++ } ++ ++ return 0; ++} ++ ++static int tpmfront_suspend_finish(struct tpm_private *tp) ++{ ++ tp->is_suspended = 0; ++ /* Allow applications to send again. */ ++ mutex_unlock(&suspend_lock); ++ return 0; ++} ++ ++static int tpmfront_suspend_cancel(struct xenbus_device *dev) ++{ ++ struct tpm_private *tp = tpm_private_from_dev(&dev->dev); ++ return tpmfront_suspend_finish(tp); ++} ++ ++static int tpmfront_resume(struct xenbus_device *dev) ++{ ++ struct tpm_private *tp = tpm_private_from_dev(&dev->dev); ++ destroy_tpmring(tp); ++ return talk_to_backend(dev, tp); ++} ++ ++static int tpmif_connect(struct xenbus_device *dev, ++ struct tpm_private *tp, ++ domid_t domid) ++{ ++ int err; ++ ++ tp->backend_id = domid; ++ ++ err = bind_listening_port_to_irqhandler( ++ domid, tpmif_int, SA_SAMPLE_RANDOM, "tpmif", tp); ++ if (err <= 0) { ++ WPRINTK("bind_listening_port_to_irqhandler failed " ++ "(err=%d)\n", err); ++ return err; ++ } ++ tp->irq = err; ++ ++ return 0; ++} ++ ++static struct xenbus_device_id tpmfront_ids[] = { ++ { "vtpm" }, ++ { "" } ++}; ++ ++static struct xenbus_driver tpmfront = { ++ .name = "vtpm", ++ .owner = THIS_MODULE, ++ .ids = tpmfront_ids, ++ .probe = tpmfront_probe, ++ .remove = tpmfront_remove, ++ .resume = tpmfront_resume, ++ .otherend_changed = backend_changed, ++ .suspend = tpmfront_suspend, ++ .suspend_cancel = tpmfront_suspend_cancel, ++}; ++ ++static void __init init_tpm_xenbus(void) ++{ ++ xenbus_register_frontend(&tpmfront); ++} ++ ++static int tpmif_allocate_tx_buffers(struct tpm_private *tp) ++{ ++ unsigned int i; ++ ++ for (i = 0; i < TPMIF_TX_RING_SIZE; i++) { ++ tp->tx_buffers[i] = tx_buffer_alloc(); ++ if (!tp->tx_buffers[i]) { ++ tpmif_free_tx_buffers(tp); ++ return -ENOMEM; ++ } ++ } ++ return 0; ++} ++ ++static void tpmif_free_tx_buffers(struct tpm_private *tp) ++{ ++ unsigned int i; ++ ++ for (i = 0; i < TPMIF_TX_RING_SIZE; i++) ++ tx_buffer_free(tp->tx_buffers[i]); ++} ++ ++static void tpmif_rx_action(unsigned long priv) ++{ ++ struct tpm_private *tp = (struct tpm_private *)priv; ++ int i = 0; ++ unsigned int received; ++ unsigned int offset = 0; ++ u8 *buffer; ++ tpmif_tx_request_t *tx = &tp->tx->ring[i].req; ++ ++ atomic_set(&tp->tx_busy, 0); ++ wake_up_interruptible(&tp->wait_q); ++ ++ received = tx->size; ++ ++ buffer = kmalloc(received, GFP_ATOMIC); ++ if (!buffer) ++ return; ++ ++ for (i = 0; i < TPMIF_TX_RING_SIZE && offset < received; i++) { ++ struct tx_buffer *txb = tp->tx_buffers[i]; ++ tpmif_tx_request_t *tx; ++ unsigned int tocopy; ++ ++ tx = &tp->tx->ring[i].req; ++ tocopy = tx->size; ++ if (tocopy > PAGE_SIZE) ++ tocopy = PAGE_SIZE; ++ ++ memcpy(&buffer[offset], txb->data, tocopy); ++ ++ gnttab_release_grant_reference(&gref_head, tx->ref); ++ ++ offset += tocopy; ++ } ++ ++ vtpm_vd_recv(tp->chip, buffer, received, tp->tx_remember); ++ kfree(buffer); ++} ++ ++ ++static irqreturn_t tpmif_int(int irq, void *tpm_priv, struct pt_regs *ptregs) ++{ ++ struct tpm_private *tp = tpm_priv; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&tp->tx_lock, flags); ++ tpmif_rx_tasklet.data = (unsigned long)tp; ++ tasklet_schedule(&tpmif_rx_tasklet); ++ spin_unlock_irqrestore(&tp->tx_lock, flags); ++ ++ return IRQ_HANDLED; ++} ++ ++ ++static int tpm_xmit(struct tpm_private *tp, ++ const u8 * buf, size_t count, int isuserbuffer, ++ void *remember) ++{ ++ tpmif_tx_request_t *tx; ++ TPMIF_RING_IDX i; ++ unsigned int offset = 0; ++ ++ spin_lock_irq(&tp->tx_lock); ++ ++ if (unlikely(atomic_read(&tp->tx_busy))) { ++ printk("tpm_xmit: There's an outstanding request/response " ++ "on the way!\n"); ++ spin_unlock_irq(&tp->tx_lock); ++ return -EBUSY; ++ } ++ ++ if (tp->is_connected != 1) { ++ spin_unlock_irq(&tp->tx_lock); ++ return -EIO; ++ } ++ ++ for (i = 0; count > 0 && i < TPMIF_TX_RING_SIZE; i++) { ++ struct tx_buffer *txb = tp->tx_buffers[i]; ++ int copied; ++ ++ if (!txb) { ++ DPRINTK("txb (i=%d) is NULL. buffers initilized?\n" ++ "Not transmitting anything!\n", i); ++ spin_unlock_irq(&tp->tx_lock); ++ return -EFAULT; ++ } ++ ++ copied = tx_buffer_copy(txb, &buf[offset], count, ++ isuserbuffer); ++ if (copied < 0) { ++ /* An error occurred */ ++ spin_unlock_irq(&tp->tx_lock); ++ return copied; ++ } ++ count -= copied; ++ offset += copied; ++ ++ tx = &tp->tx->ring[i].req; ++ tx->addr = virt_to_machine(txb->data); ++ tx->size = txb->len; ++ ++ DPRINTK("First 4 characters sent by TPM-FE are " ++ "0x%02x 0x%02x 0x%02x 0x%02x\n", ++ txb->data[0],txb->data[1],txb->data[2],txb->data[3]); ++ ++ /* Get the granttable reference for this page. */ ++ tx->ref = gnttab_claim_grant_reference(&gref_head); ++ if (tx->ref == -ENOSPC) { ++ spin_unlock_irq(&tp->tx_lock); ++ DPRINTK("Grant table claim reference failed in " ++ "func:%s line:%d file:%s\n", ++ __FUNCTION__, __LINE__, __FILE__); ++ return -ENOSPC; ++ } ++ gnttab_grant_foreign_access_ref(tx->ref, ++ tp->backend_id, ++ virt_to_mfn(txb->data), ++ 0 /*RW*/); ++ wmb(); ++ } ++ ++ atomic_set(&tp->tx_busy, 1); ++ tp->tx_remember = remember; ++ ++ mb(); ++ ++ notify_remote_via_irq(tp->irq); ++ ++ spin_unlock_irq(&tp->tx_lock); ++ return offset; ++} ++ ++ ++static void tpmif_notify_upperlayer(struct tpm_private *tp) ++{ ++ /* Notify upper layer about the state of the connection to the BE. */ ++ vtpm_vd_status(tp->chip, (tp->is_connected ++ ? TPM_VD_STATUS_CONNECTED ++ : TPM_VD_STATUS_DISCONNECTED)); ++} ++ ++ ++static void tpmif_set_connected_state(struct tpm_private *tp, u8 is_connected) ++{ ++ /* ++ * Don't notify upper layer if we are in suspend mode and ++ * should disconnect - assumption is that we will resume ++ * The mutex keeps apps from sending. ++ */ ++ if (is_connected == 0 && tp->is_suspended == 1) ++ return; ++ ++ /* ++ * Unlock the mutex if we are connected again ++ * after being suspended - now resuming. ++ * This also removes the suspend state. ++ */ ++ if (is_connected == 1 && tp->is_suspended == 1) ++ tpmfront_suspend_finish(tp); ++ ++ if (is_connected != tp->is_connected) { ++ tp->is_connected = is_connected; ++ tpmif_notify_upperlayer(tp); ++ } ++} ++ ++ ++ ++/* ================================================================= ++ * Initialization function. ++ * ================================================================= ++ */ ++ ++ ++static int __init tpmif_init(void) ++{ ++ struct tpm_private *tp; ++ ++ if (is_initial_xendomain()) ++ return -EPERM; ++ ++ tp = tpm_private_get(); ++ if (!tp) ++ return -ENOMEM; ++ ++ IPRINTK("Initialising the vTPM driver.\n"); ++ if (gnttab_alloc_grant_references(TPMIF_TX_RING_SIZE, ++ &gref_head) < 0) { ++ tpm_private_put(); ++ return -EFAULT; ++ } ++ ++ init_tpm_xenbus(); ++ return 0; ++} ++ ++ ++module_init(tpmif_init); ++ ++MODULE_LICENSE("Dual BSD/GPL"); +Index: head-2007-09-25/include/linux/elfnote.h +=================================================================== +--- head-2007-09-25.orig/include/linux/elfnote.h 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/include/linux/elfnote.h 2007-09-25 14:35:02.000000000 +0200 +@@ -38,7 +38,7 @@ + * e.g. ELFNOTE(XYZCo, 42, .asciz, "forty-two") + * ELFNOTE(XYZCo, 12, .long, 0xdeadbeef) + */ +-#define ELFNOTE(name, type, desctype, descdata) \ ++#define ELFNOTE(name, type, desctype, descdata...) \ + .pushsection .note.name, "",@note ; \ + .align 4 ; \ + .long 2f - 1f /* namesz */ ; \ +Index: head-2007-09-25/include/linux/gfp.h +=================================================================== +--- head-2007-09-25.orig/include/linux/gfp.h 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/include/linux/gfp.h 2007-09-25 14:35:02.000000000 +0200 +@@ -115,7 +115,11 @@ static inline enum zone_type gfp_zone(gf + */ + + #ifndef HAVE_ARCH_FREE_PAGE +-static inline void arch_free_page(struct page *page, int order) { } ++/* ++ * If arch_free_page returns non-zero then the generic free_page code can ++ * immediately bail: the arch-specific function has done all the work. ++ */ ++static inline int arch_free_page(struct page *page, int order) { return 0; } + #endif + #ifndef HAVE_ARCH_ALLOC_PAGE + static inline void arch_alloc_page(struct page *page, int order) { } +Index: head-2007-09-25/include/linux/interrupt.h +=================================================================== +--- head-2007-09-25.orig/include/linux/interrupt.h 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/include/linux/interrupt.h 2007-09-25 14:35:02.000000000 +0200 +@@ -207,6 +207,12 @@ static inline int disable_irq_wake(unsig + + #endif /* CONFIG_GENERIC_HARDIRQS */ + ++#ifdef CONFIG_HAVE_IRQ_IGNORE_UNHANDLED ++int irq_ignore_unhandled(unsigned int irq); ++#else ++#define irq_ignore_unhandled(irq) 0 ++#endif ++ + #ifndef __ARCH_SET_SOFTIRQ_PENDING + #define set_softirq_pending(x) (local_softirq_pending() = (x)) + #define or_softirq_pending(x) (local_softirq_pending() |= (x)) +Index: head-2007-09-25/include/linux/kexec.h +=================================================================== +--- head-2007-09-25.orig/include/linux/kexec.h 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/include/linux/kexec.h 2007-09-25 14:35:02.000000000 +0200 +@@ -46,6 +46,13 @@ + KEXEC_CORE_NOTE_NAME_BYTES + \ + KEXEC_CORE_NOTE_DESC_BYTES ) + ++#ifndef KEXEC_ARCH_HAS_PAGE_MACROS ++#define kexec_page_to_pfn(page) page_to_pfn(page) ++#define kexec_pfn_to_page(pfn) pfn_to_page(pfn) ++#define kexec_virt_to_phys(addr) virt_to_phys(addr) ++#define kexec_phys_to_virt(addr) phys_to_virt(addr) ++#endif ++ + /* + * This structure is used to hold the arguments that are used when loading + * kernel binaries. +@@ -106,6 +113,12 @@ struct kimage { + extern NORET_TYPE void machine_kexec(struct kimage *image) ATTRIB_NORET; + extern int machine_kexec_prepare(struct kimage *image); + extern void machine_kexec_cleanup(struct kimage *image); ++#ifdef CONFIG_XEN ++extern int xen_machine_kexec_load(struct kimage *image); ++extern void xen_machine_kexec_unload(struct kimage *image); ++extern void xen_machine_kexec_setup_resources(void); ++extern void xen_machine_kexec_register_resources(struct resource *res); ++#endif + extern asmlinkage long sys_kexec_load(unsigned long entry, + unsigned long nr_segments, + struct kexec_segment __user *segments, +Index: head-2007-09-25/include/linux/mm.h +=================================================================== +--- head-2007-09-25.orig/include/linux/mm.h 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/include/linux/mm.h 2007-09-25 14:35:02.000000000 +0200 +@@ -169,6 +169,9 @@ extern unsigned int kobjsize(const void + #define VM_MAPPED_COPY 0x01000000 /* T if mapped copy of data (nommu mmap) */ + #define VM_INSERTPAGE 0x02000000 /* The vma has had "vm_insert_page()" done on it */ + #define VM_ALWAYSDUMP 0x04000000 /* Always include in core dumps */ ++#ifdef CONFIG_XEN ++#define VM_FOREIGN 0x08000000 /* Has pages belonging to another VM */ ++#endif + + #ifndef VM_STACK_DEFAULT_FLAGS /* arch can override this */ + #define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS +@@ -208,6 +211,10 @@ struct vm_operations_struct { + /* notification that a previously read-only page is about to become + * writable, if an error is returned it will cause a SIGBUS */ + int (*page_mkwrite)(struct vm_area_struct *vma, struct page *page); ++ /* Area-specific function for clearing the PTE at @ptep. Returns the ++ * original value of @ptep. */ ++ pte_t (*zap_pte)(struct vm_area_struct *vma, ++ unsigned long addr, pte_t *ptep, int is_fullmm); + #ifdef CONFIG_NUMA + int (*set_policy)(struct vm_area_struct *vma, struct mempolicy *new); + struct mempolicy *(*get_policy)(struct vm_area_struct *vma, +Index: head-2007-09-25/include/linux/page-flags.h +=================================================================== +--- head-2007-09-25.orig/include/linux/page-flags.h 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/include/linux/page-flags.h 2007-09-25 14:35:02.000000000 +0200 +@@ -104,6 +104,8 @@ + #define PG_uncached 31 /* Page has been mapped as uncached */ + #endif + ++#define PG_foreign 20 /* Page is owned by foreign allocator. */ ++ + /* + * Manipulation of page state flags + */ +@@ -270,6 +272,18 @@ static inline void __ClearPageTail(struc + #define SetPageUncached(page) set_bit(PG_uncached, &(page)->flags) + #define ClearPageUncached(page) clear_bit(PG_uncached, &(page)->flags) + ++#define PageForeign(page) test_bit(PG_foreign, &(page)->flags) ++#define SetPageForeign(page, dtor) do { \ ++ set_bit(PG_foreign, &(page)->flags); \ ++ (page)->index = (long)(dtor); \ ++} while (0) ++#define ClearPageForeign(page) do { \ ++ clear_bit(PG_foreign, &(page)->flags); \ ++ (page)->index = 0; \ ++} while (0) ++#define PageForeignDestructor(page) \ ++ ( (void (*) (struct page *)) (page)->index )(page) ++ + struct page; /* forward declaration */ + + extern void cancel_dirty_page(struct page *page, unsigned int account_size); +Index: head-2007-09-25/include/linux/skbuff.h +=================================================================== +--- head-2007-09-25.orig/include/linux/skbuff.h 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/include/linux/skbuff.h 2007-09-25 14:35:02.000000000 +0200 +@@ -212,6 +212,8 @@ typedef unsigned char *sk_buff_data_t; + * @local_df: allow local fragmentation + * @cloned: Head may be cloned (check refcnt to be sure) + * @nohdr: Payload reference only, must not modify header ++ * @proto_data_valid: Protocol data validated since arriving at localhost ++ * @proto_csum_blank: Protocol csum must be added before leaving localhost + * @pkt_type: Packet class + * @fclone: skbuff clone status + * @ip_summed: Driver fed us an IP checksum +@@ -277,7 +279,13 @@ struct sk_buff { + nfctinfo:3; + __u8 pkt_type:3, + fclone:2, ++#ifndef CONFIG_XEN + ipvs_property:1; ++#else ++ ipvs_property:1, ++ proto_data_valid:1, ++ proto_csum_blank:1; ++#endif + __be16 protocol; + + void (*destructor)(struct sk_buff *skb); +Index: head-2007-09-25/kernel/irq/spurious.c +=================================================================== +--- head-2007-09-25.orig/kernel/irq/spurious.c 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/kernel/irq/spurious.c 2007-09-25 14:35:02.000000000 +0200 +@@ -172,7 +172,8 @@ void note_interrupt(unsigned int irq, st + irqreturn_t action_ret) + { + if (unlikely(action_ret != IRQ_HANDLED)) { +- desc->irqs_unhandled++; ++ if (!irq_ignore_unhandled(irq)) ++ desc->irqs_unhandled++; + if (unlikely(action_ret != IRQ_NONE)) + report_bad_irq(irq, desc, action_ret); + } +Index: head-2007-09-25/kernel/kexec.c +=================================================================== +--- head-2007-09-25.orig/kernel/kexec.c 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/kernel/kexec.c 2007-09-25 14:35:02.000000000 +0200 +@@ -331,13 +331,27 @@ static int kimage_is_destination_range(s + return 0; + } + +-static struct page *kimage_alloc_pages(gfp_t gfp_mask, unsigned int order) ++static struct page *kimage_alloc_pages(gfp_t gfp_mask, unsigned int order, unsigned long limit) + { + struct page *pages; + + pages = alloc_pages(gfp_mask, order); + if (pages) { + unsigned int count, i; ++#ifdef CONFIG_XEN ++ int address_bits; ++ ++ if (limit == ~0UL) ++ address_bits = BITS_PER_LONG; ++ else ++ address_bits = long_log2(limit); ++ ++ if (xen_create_contiguous_region((unsigned long)page_address(pages), ++ order, address_bits) < 0) { ++ __free_pages(pages, order); ++ return NULL; ++ } ++#endif + pages->mapping = NULL; + set_page_private(pages, order); + count = 1 << order; +@@ -356,6 +370,9 @@ static void kimage_free_pages(struct pag + count = 1 << order; + for (i = 0; i < count; i++) + ClearPageReserved(page + i); ++#ifdef CONFIG_XEN ++ xen_destroy_contiguous_region((unsigned long)page_address(page), order); ++#endif + __free_pages(page, order); + } + +@@ -401,10 +418,10 @@ static struct page *kimage_alloc_normal_ + do { + unsigned long pfn, epfn, addr, eaddr; + +- pages = kimage_alloc_pages(GFP_KERNEL, order); ++ pages = kimage_alloc_pages(GFP_KERNEL, order, KEXEC_CONTROL_MEMORY_LIMIT); + if (!pages) + break; +- pfn = page_to_pfn(pages); ++ pfn = kexec_page_to_pfn(pages); + epfn = pfn + count; + addr = pfn << PAGE_SHIFT; + eaddr = epfn << PAGE_SHIFT; +@@ -438,6 +455,7 @@ static struct page *kimage_alloc_normal_ + return pages; + } + ++#ifndef CONFIG_XEN + static struct page *kimage_alloc_crash_control_pages(struct kimage *image, + unsigned int order) + { +@@ -491,7 +509,7 @@ static struct page *kimage_alloc_crash_c + } + /* If I don't overlap any segments I have found my hole! */ + if (i == image->nr_segments) { +- pages = pfn_to_page(hole_start >> PAGE_SHIFT); ++ pages = kexec_pfn_to_page(hole_start >> PAGE_SHIFT); + break; + } + } +@@ -518,6 +536,13 @@ struct page *kimage_alloc_control_pages( + + return pages; + } ++#else /* !CONFIG_XEN */ ++struct page *kimage_alloc_control_pages(struct kimage *image, ++ unsigned int order) ++{ ++ return kimage_alloc_normal_control_pages(image, order); ++} ++#endif + + static int kimage_add_entry(struct kimage *image, kimage_entry_t entry) + { +@@ -533,7 +558,7 @@ static int kimage_add_entry(struct kimag + return -ENOMEM; + + ind_page = page_address(page); +- *image->entry = virt_to_phys(ind_page) | IND_INDIRECTION; ++ *image->entry = kexec_virt_to_phys(ind_page) | IND_INDIRECTION; + image->entry = ind_page; + image->last_entry = ind_page + + ((PAGE_SIZE/sizeof(kimage_entry_t)) - 1); +@@ -594,13 +619,13 @@ static int kimage_terminate(struct kimag + #define for_each_kimage_entry(image, ptr, entry) \ + for (ptr = &image->head; (entry = *ptr) && !(entry & IND_DONE); \ + ptr = (entry & IND_INDIRECTION)? \ +- phys_to_virt((entry & PAGE_MASK)): ptr +1) ++ kexec_phys_to_virt((entry & PAGE_MASK)): ptr +1) + + static void kimage_free_entry(kimage_entry_t entry) + { + struct page *page; + +- page = pfn_to_page(entry >> PAGE_SHIFT); ++ page = kexec_pfn_to_page(entry >> PAGE_SHIFT); + kimage_free_pages(page); + } + +@@ -612,6 +637,10 @@ static void kimage_free(struct kimage *i + if (!image) + return; + ++#ifdef CONFIG_XEN ++ xen_machine_kexec_unload(image); ++#endif ++ + kimage_free_extra_pages(image); + for_each_kimage_entry(image, ptr, entry) { + if (entry & IND_INDIRECTION) { +@@ -687,7 +716,7 @@ static struct page *kimage_alloc_page(st + * have a match. + */ + list_for_each_entry(page, &image->dest_pages, lru) { +- addr = page_to_pfn(page) << PAGE_SHIFT; ++ addr = kexec_page_to_pfn(page) << PAGE_SHIFT; + if (addr == destination) { + list_del(&page->lru); + return page; +@@ -698,16 +727,16 @@ static struct page *kimage_alloc_page(st + kimage_entry_t *old; + + /* Allocate a page, if we run out of memory give up */ +- page = kimage_alloc_pages(gfp_mask, 0); ++ page = kimage_alloc_pages(gfp_mask, 0, KEXEC_SOURCE_MEMORY_LIMIT); + if (!page) + return NULL; + /* If the page cannot be used file it away */ +- if (page_to_pfn(page) > ++ if (kexec_page_to_pfn(page) > + (KEXEC_SOURCE_MEMORY_LIMIT >> PAGE_SHIFT)) { + list_add(&page->lru, &image->unuseable_pages); + continue; + } +- addr = page_to_pfn(page) << PAGE_SHIFT; ++ addr = kexec_page_to_pfn(page) << PAGE_SHIFT; + + /* If it is the destination page we want use it */ + if (addr == destination) +@@ -730,7 +759,7 @@ static struct page *kimage_alloc_page(st + struct page *old_page; + + old_addr = *old & PAGE_MASK; +- old_page = pfn_to_page(old_addr >> PAGE_SHIFT); ++ old_page = kexec_pfn_to_page(old_addr >> PAGE_SHIFT); + copy_highpage(page, old_page); + *old = addr | (*old & ~PAGE_MASK); + +@@ -780,7 +809,7 @@ static int kimage_load_normal_segment(st + result = -ENOMEM; + goto out; + } +- result = kimage_add_page(image, page_to_pfn(page) ++ result = kimage_add_page(image, kexec_page_to_pfn(page) + << PAGE_SHIFT); + if (result < 0) + goto out; +@@ -812,6 +841,7 @@ out: + return result; + } + ++#ifndef CONFIG_XEN + static int kimage_load_crash_segment(struct kimage *image, + struct kexec_segment *segment) + { +@@ -834,7 +864,7 @@ static int kimage_load_crash_segment(str + char *ptr; + size_t uchunk, mchunk; + +- page = pfn_to_page(maddr >> PAGE_SHIFT); ++ page = kexec_pfn_to_page(maddr >> PAGE_SHIFT); + if (page == 0) { + result = -ENOMEM; + goto out; +@@ -883,6 +913,13 @@ static int kimage_load_segment(struct ki + + return result; + } ++#else /* CONFIG_XEN */ ++static int kimage_load_segment(struct kimage *image, ++ struct kexec_segment *segment) ++{ ++ return kimage_load_normal_segment(image, segment); ++} ++#endif + + /* + * Exec Kernel system call: for obvious reasons only root may call it. +@@ -993,6 +1030,13 @@ asmlinkage long sys_kexec_load(unsigned + if (result) + goto out; + } ++#ifdef CONFIG_XEN ++ if (image) { ++ result = xen_machine_kexec_load(image); ++ if (result) ++ goto out; ++ } ++#endif + /* Install the new kernel, and Uninstall the old */ + image = xchg(dest_image, image); + +@@ -1047,7 +1091,6 @@ void crash_kexec(struct pt_regs *regs) + { + int locked; + +- + /* Take the kexec_lock here to prevent sys_kexec_load + * running on one cpu from replacing the crash kernel + * we are using after a panic on a different cpu. +Index: head-2007-09-25/lib/Makefile +=================================================================== +--- head-2007-09-25.orig/lib/Makefile 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/lib/Makefile 2007-09-25 14:35:02.000000000 +0200 +@@ -58,6 +58,7 @@ obj-$(CONFIG_SMP) += percpu_counter.o + obj-$(CONFIG_AUDIT_GENERIC) += audit.o + + obj-$(CONFIG_SWIOTLB) += swiotlb.o ++swiotlb-$(CONFIG_XEN) := ../arch/i386/kernel/swiotlb.o + obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o + + lib-$(CONFIG_GENERIC_BUG) += bug.o +Index: head-2007-09-25/mm/highmem.c +=================================================================== +--- head-2007-09-25.orig/mm/highmem.c 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/mm/highmem.c 2007-09-25 14:35:02.000000000 +0200 +@@ -158,6 +158,17 @@ start: + return vaddr; + } + ++#ifdef CONFIG_XEN ++void kmap_flush_unused(void) ++{ ++ spin_lock(&kmap_lock); ++ flush_all_zero_pkmaps(); ++ spin_unlock(&kmap_lock); ++} ++ ++EXPORT_SYMBOL(kmap_flush_unused); ++#endif ++ + void fastcall *kmap_high(struct page *page) + { + unsigned long vaddr; +Index: head-2007-09-25/mm/memory.c +=================================================================== +--- head-2007-09-25.orig/mm/memory.c 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/mm/memory.c 2007-09-25 14:35:02.000000000 +0200 +@@ -404,7 +404,8 @@ struct page *vm_normal_page(struct vm_ar + * and that the resulting page looks ok. + */ + if (unlikely(!pfn_valid(pfn))) { +- print_bad_pte(vma, pte, addr); ++ if (!(vma->vm_flags & VM_RESERVED)) ++ print_bad_pte(vma, pte, addr); + return NULL; + } + +@@ -662,8 +663,12 @@ static unsigned long zap_pte_range(struc + page->index > details->last_index)) + continue; + } +- ptent = ptep_get_and_clear_full(mm, addr, pte, +- tlb->fullmm); ++ if (unlikely(vma->vm_ops && vma->vm_ops->zap_pte)) ++ ptent = vma->vm_ops->zap_pte(vma, addr, pte, ++ tlb->fullmm); ++ else ++ ptent = ptep_get_and_clear_full(mm, addr, pte, ++ tlb->fullmm); + tlb_remove_tlb_entry(tlb, pte, addr); + if (unlikely(!page)) + continue; +@@ -896,6 +901,7 @@ unsigned long zap_page_range(struct vm_a + tlb_finish_mmu(tlb, address, end); + return end; + } ++EXPORT_SYMBOL(zap_page_range); + + /* + * Do a quick page-table lookup for a single page. +@@ -1035,6 +1041,26 @@ int get_user_pages(struct task_struct *t + continue; + } + ++#ifdef CONFIG_XEN ++ if (vma && (vma->vm_flags & VM_FOREIGN)) { ++ struct page **map = vma->vm_private_data; ++ int offset = (start - vma->vm_start) >> PAGE_SHIFT; ++ if (map[offset] != NULL) { ++ if (pages) { ++ struct page *page = map[offset]; ++ ++ pages[i] = page; ++ get_page(page); ++ } ++ if (vmas) ++ vmas[i] = vma; ++ i++; ++ start += PAGE_SIZE; ++ len--; ++ continue; ++ } ++ } ++#endif + if (!vma || (vma->vm_flags & (VM_IO | VM_PFNMAP)) + || !(vm_flags & vma->vm_flags)) + return i ? : -EFAULT; +Index: head-2007-09-25/mm/page_alloc.c +=================================================================== +--- head-2007-09-25.orig/mm/page_alloc.c 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/mm/page_alloc.c 2007-09-25 14:35:02.000000000 +0200 +@@ -206,7 +206,11 @@ static void bad_page(struct page *page) + 1 << PG_slab | + 1 << PG_swapcache | + 1 << PG_writeback | +- 1 << PG_buddy ); ++ 1 << PG_buddy | ++#ifdef CONFIG_X86_XEN ++ 1 << PG_pinned | ++#endif ++ 1 << PG_foreign ); + set_page_count(page, 0); + reset_page_mapcount(page); + page->mapping = NULL; +@@ -442,7 +446,11 @@ static inline int free_pages_check(struc + 1 << PG_swapcache | + 1 << PG_writeback | + 1 << PG_reserved | +- 1 << PG_buddy )))) ++ 1 << PG_buddy | ++#ifdef CONFIG_X86_XEN ++ 1 << PG_pinned | ++#endif ++ 1 << PG_foreign )))) + bad_page(page); + /* + * PageReclaim == PageTail. It is only an error +@@ -504,6 +512,12 @@ static void __free_pages_ok(struct page + int i; + int reserved = 0; + ++#ifdef CONFIG_XEN ++ if (PageForeign(page)) { ++ PageForeignDestructor(page); ++ return; ++ } ++#endif + for (i = 0 ; i < (1 << order) ; ++i) + reserved += free_pages_check(page + i); + if (reserved) +@@ -598,7 +612,11 @@ static int prep_new_page(struct page *pa + 1 << PG_swapcache | + 1 << PG_writeback | + 1 << PG_reserved | +- 1 << PG_buddy )))) ++ 1 << PG_buddy | ++#ifdef CONFIG_X86_XEN ++ 1 << PG_pinned | ++#endif ++ 1 << PG_foreign )))) + bad_page(page); + + /* +@@ -781,6 +799,12 @@ static void fastcall free_hot_cold_page( + struct per_cpu_pages *pcp; + unsigned long flags; + ++#ifdef CONFIG_XEN ++ if (PageForeign(page)) { ++ PageForeignDestructor(page); ++ return; ++ } ++#endif + if (PageAnon(page)) + page->mapping = NULL; + if (free_pages_check(page)) +Index: head-2007-09-25/net/core/dev.c +=================================================================== +--- head-2007-09-25.orig/net/core/dev.c 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/net/core/dev.c 2007-09-25 14:35:02.000000000 +0200 +@@ -118,6 +118,12 @@ + #include <linux/ctype.h> + #include <linux/if_arp.h> + ++#ifdef CONFIG_XEN ++#include <net/ip.h> ++#include <linux/tcp.h> ++#include <linux/udp.h> ++#endif ++ + /* + * The list of packet types we will receive (as opposed to discard) + * and the routines to invoke. +@@ -1456,6 +1462,43 @@ out_kfree_skb: + } \ + } + ++#ifdef CONFIG_XEN ++inline int skb_checksum_setup(struct sk_buff *skb) ++{ ++ if (skb->proto_csum_blank) { ++ if (skb->protocol != htons(ETH_P_IP)) ++ goto out; ++ skb->h.raw = (unsigned char *)skb->nh.iph + 4*skb->nh.iph->ihl; ++ if (skb->h.raw >= skb->tail) ++ goto out; ++ switch (skb->nh.iph->protocol) { ++ case IPPROTO_TCP: ++ skb->csum = offsetof(struct tcphdr, check); ++ break; ++ case IPPROTO_UDP: ++ skb->csum = offsetof(struct udphdr, check); ++ break; ++ default: ++ if (net_ratelimit()) ++ printk(KERN_ERR "Attempting to checksum a non-" ++ "TCP/UDP packet, dropping a protocol" ++ " %d packet", skb->nh.iph->protocol); ++ goto out; ++ } ++ if ((skb->h.raw + skb->csum + 2) > skb->tail) ++ goto out; ++ skb->ip_summed = CHECKSUM_HW; ++ skb->proto_csum_blank = 0; ++ } ++ return 0; ++out: ++ return -EPROTO; ++} ++#else ++inline int skb_checksum_setup(struct sk_buff *skb) { return 0; } ++#endif ++ ++ + /** + * dev_queue_xmit - transmit a buffer + * @skb: buffer to transmit +@@ -1488,6 +1531,12 @@ int dev_queue_xmit(struct sk_buff *skb) + struct Qdisc *q; + int rc = -ENOMEM; + ++ /* If a checksum-deferred packet is forwarded to a device that needs a ++ * checksum, correct the pointers and force checksumming. ++ */ ++ if (skb_checksum_setup(skb)) ++ goto out_kfree_skb; ++ + /* GSO will handle the following emulations directly. */ + if (netif_needs_gso(dev, skb)) + goto gso; +@@ -1874,6 +1923,19 @@ int netif_receive_skb(struct sk_buff *sk + } + #endif + ++#ifdef CONFIG_XEN ++ switch (skb->ip_summed) { ++ case CHECKSUM_UNNECESSARY: ++ skb->proto_data_valid = 1; ++ break; ++ case CHECKSUM_HW: ++ /* XXX Implement me. */ ++ default: ++ skb->proto_data_valid = 0; ++ break; ++ } ++#endif ++ + list_for_each_entry_rcu(ptype, &ptype_all, list) { + if (!ptype->dev || ptype->dev == skb->dev) { + if (pt_prev) +@@ -3778,6 +3840,7 @@ EXPORT_SYMBOL(unregister_netdevice_notif + EXPORT_SYMBOL(net_enable_timestamp); + EXPORT_SYMBOL(net_disable_timestamp); + EXPORT_SYMBOL(dev_get_flags); ++EXPORT_SYMBOL(skb_checksum_setup); + + #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE) + EXPORT_SYMBOL(br_handle_frame_hook); +Index: head-2007-09-25/net/core/skbuff.c +=================================================================== +--- head-2007-09-25.orig/net/core/skbuff.c 2007-09-25 14:22:36.000000000 +0200 ++++ head-2007-09-25/net/core/skbuff.c 2007-09-25 14:35:02.000000000 +0200 +@@ -416,6 +416,10 @@ struct sk_buff *skb_clone(struct sk_buff + C(local_df); + n->cloned = 1; + n->nohdr = 0; ++#ifdef CONFIG_XEN ++ C(proto_data_valid); ++ C(proto_csum_blank); ++#endif + C(pkt_type); + C(ip_summed); + C(priority); |