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Merge ../from-linus

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This commit is contained in:
Len Brown 2005-08-05 13:03:06 -04:00
commit e872d4cace
29 changed files with 244 additions and 95 deletions
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2
Documentation/usb/usbmon.txt
View File

@ -102,7 +102,7 @@ Here is the list of words, from left to right:
- URB Status. This field makes no sense for submissions, but is present
to help scripts with parsing. In error case, it contains the error code.
In case of a setup packet, it contains a Setup Tag. If scripts read a number
in this field, the proceed to read Data Length. Otherwise, they read
in this field, they proceed to read Data Length. Otherwise, they read
the setup packet before reading the Data Length.
- Setup packet, if present, consists of 5 words: one of each for bmRequestType,
bRequest, wValue, wIndex, wLength, as specified by the USB Specification 2.0.

16
arch/alpha/kernel/pci.c
View File

@ -350,8 +350,24 @@ pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
region->end = res->end - offset;
}
void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region)
{
struct pci_controller *hose = (struct pci_controller *)dev->sysdata;
unsigned long offset = 0;
if (res->flags & IORESOURCE_IO)
offset = hose->io_space->start;
else if (res->flags & IORESOURCE_MEM)
offset = hose->mem_space->start;
res->start = region->start + offset;
res->end = region->end + offset;
}
#ifdef CONFIG_HOTPLUG
EXPORT_SYMBOL(pcibios_resource_to_bus);
EXPORT_SYMBOL(pcibios_bus_to_resource);
#endif
int

17
arch/arm/kernel/bios32.c
View File

@ -447,9 +447,26 @@ pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
region->end = res->end - offset;
}
void __devinit
pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region)
{
struct pci_sys_data *root = dev->sysdata;
unsigned long offset = 0;
if (res->flags & IORESOURCE_IO)
offset = root->io_offset;
if (res->flags & IORESOURCE_MEM)
offset = root->mem_offset;
res->start = region->start + offset;
res->end = region->end + offset;
}
#ifdef CONFIG_HOTPLUG
EXPORT_SYMBOL(pcibios_fixup_bus);
EXPORT_SYMBOL(pcibios_resource_to_bus);
EXPORT_SYMBOL(pcibios_bus_to_resource);
#endif
/*

15
arch/ppc/kernel/pci.c
View File

@ -160,6 +160,21 @@ void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
}
EXPORT_SYMBOL(pcibios_resource_to_bus);
void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region)
{
unsigned long offset = 0;
struct pci_controller *hose = dev->sysdata;
if (hose && res->flags & IORESOURCE_IO)
offset = (unsigned long)hose->io_base_virt - isa_io_base;
else if (hose && res->flags & IORESOURCE_MEM)
offset = hose->pci_mem_offset;
res->start = region->start + offset;
res->end = region->end + offset;
}
EXPORT_SYMBOL(pcibios_bus_to_resource);
/*
* We need to avoid collisions with `mirrored' VGA ports
* and other strange ISA hardware, so we always want the

20
arch/ppc64/kernel/pci.c
View File

@ -108,8 +108,28 @@ void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region
region->end = res->end - offset;
}
void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region)
{
unsigned long offset = 0;
struct pci_controller *hose = pci_bus_to_host(dev->bus);
if (!hose)
return;
if (res->flags & IORESOURCE_IO)
offset = (unsigned long)hose->io_base_virt - pci_io_base;
if (res->flags & IORESOURCE_MEM)
offset = hose->pci_mem_offset;
res->start = region->start + offset;
res->end = region->end + offset;
}
#ifdef CONFIG_HOTPLUG
EXPORT_SYMBOL(pcibios_resource_to_bus);
EXPORT_SYMBOL(pcibios_bus_to_resource);
#endif
/*

6
arch/sparc64/kernel/pci.c
View File

@ -413,6 +413,12 @@ static int pci_assign_bus_resource(const struct pci_bus *bus,
return -EBUSY;
}
void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno)
{
/* Not implemented for sparc64... */
BUG();
}
int pci_assign_resource(struct pci_dev *pdev, int resource)
{
struct pcidev_cookie *pcp = pdev->sysdata;

7
drivers/char/rtc.c
View File

@ -1209,6 +1209,7 @@ static int rtc_proc_open(struct inode *inode, struct file *file)
void rtc_get_rtc_time(struct rtc_time *rtc_tm)
{
unsigned long uip_watchdog = jiffies;
unsigned char ctrl;
#ifdef CONFIG_MACH_DECSTATION
unsigned int real_year;
@ -1224,8 +1225,10 @@ void rtc_get_rtc_time(struct rtc_time *rtc_tm)
* Once the read clears, read the RTC time (again via ioctl). Easy.
*/
if (rtc_is_updating() != 0)
msleep(20);
while (rtc_is_updating() != 0 && jiffies - uip_watchdog < 2*HZ/100) {
barrier();
cpu_relax();
}
/*
* Only the values that we read from the RTC are set. We leave

59
drivers/pci/pci.c
View File

@ -221,6 +221,37 @@ pci_find_parent_resource(const struct pci_dev *dev, struct resource *res)
return best;
}
/**
* pci_restore_bars - restore a devices BAR values (e.g. after wake-up)
* @dev: PCI device to have its BARs restored
*
* Restore the BAR values for a given device, so as to make it
* accessible by its driver.
*/
void
pci_restore_bars(struct pci_dev *dev)
{
int i, numres;
switch (dev->hdr_type) {
case PCI_HEADER_TYPE_NORMAL:
numres = 6;
break;
case PCI_HEADER_TYPE_BRIDGE:
numres = 2;
break;
case PCI_HEADER_TYPE_CARDBUS:
numres = 1;
break;
default:
/* Should never get here, but just in case... */
return;
}
for (i = 0; i < numres; i ++)
pci_update_resource(dev, &dev->resource[i], i);
}
/**
* pci_set_power_state - Set the power state of a PCI device
* @dev: PCI device to be suspended
@ -239,7 +270,7 @@ int (*platform_pci_set_power_state)(struct pci_dev *dev, pci_power_t t);
int
pci_set_power_state(struct pci_dev *dev, pci_power_t state)
{
int pm;
int pm, need_restore = 0;
u16 pmcsr, pmc;
/* bound the state we're entering */
@ -278,14 +309,17 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
return -EIO;
}
pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr);
/* If we're in D3, force entire word to 0.
* This doesn't affect PME_Status, disables PME_En, and
* sets PowerState to 0.
*/
if (dev->current_state >= PCI_D3hot)
if (dev->current_state >= PCI_D3hot) {
if (!(pmcsr & PCI_PM_CTRL_NO_SOFT_RESET))
need_restore = 1;
pmcsr = 0;
else {
pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr);
} else {
pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
pmcsr |= state;
}
@ -308,6 +342,22 @@ pci_set_power_state(struct pci_dev *dev, pci_power_t state)
platform_pci_set_power_state(dev, state);
dev->current_state = state;
/* According to section 5.4.1 of the "PCI BUS POWER MANAGEMENT
* INTERFACE SPECIFICATION, REV. 1.2", a device transitioning
* from D3hot to D0 _may_ perform an internal reset, thereby
* going to "D0 Uninitialized" rather than "D0 Initialized".
* For example, at least some versions of the 3c905B and the
* 3c556B exhibit this behaviour.
*
* At least some laptop BIOSen (e.g. the Thinkpad T21) leave
* devices in a D3hot state at boot. Consequently, we need to
* restore at least the BARs so that the device will be
* accessible to its driver.
*/
if (need_restore)
pci_restore_bars(dev);
return 0;
}
@ -805,6 +855,7 @@ struct pci_dev *isa_bridge;
EXPORT_SYMBOL(isa_bridge);
#endif
EXPORT_SYMBOL_GPL(pci_restore_bars);
EXPORT_SYMBOL(pci_enable_device_bars);
EXPORT_SYMBOL(pci_enable_device);
EXPORT_SYMBOL(pci_disable_device);

2
drivers/pci/setup-res.c
View File

@ -26,7 +26,7 @@
#include "pci.h"
static void
void
pci_update_resource(struct pci_dev *dev, struct resource *res, int resno)
{
struct pci_bus_region region;

15
drivers/pcmcia/yenta_socket.c
View File

@ -605,9 +605,8 @@ static int yenta_search_res(struct yenta_socket *socket, struct resource *res,
static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end)
{
struct pci_bus *bus;
struct resource *root, *res;
u32 start, end;
struct pci_bus_region region;
unsigned mask;
res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr;
@ -620,15 +619,13 @@ static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned typ
if (type & IORESOURCE_IO)
mask = ~3;
bus = socket->dev->subordinate;
res->name = bus->name;
res->name = socket->dev->subordinate->name;
res->flags = type;
start = config_readl(socket, addr_start) & mask;
end = config_readl(socket, addr_end) | ~mask;
if (start && end > start && !override_bios) {
res->start = start;
res->end = end;
region.start = config_readl(socket, addr_start) & mask;
region.end = config_readl(socket, addr_end) | ~mask;
if (region.start && region.end > region.start && !override_bios) {
pcibios_bus_to_resource(socket->dev, res, &region);
root = pci_find_parent_resource(socket->dev, res);
if (root && (request_resource(root, res) == 0))
return;

2
drivers/usb/host/ehci-dbg.c
View File

@ -527,7 +527,7 @@ show_periodic (struct class_device *class_dev, char *buf)
p.qh->period,
le32_to_cpup (&p.qh->hw_info2)
/* uframe masks */
& 0xffff,
& (QH_CMASK | QH_SMASK),
p.qh);
size -= temp;
next += temp;

5
drivers/usb/host/ehci-q.c
View File

@ -222,7 +222,7 @@ __acquires(ehci->lock)
struct ehci_qh *qh = (struct ehci_qh *) urb->hcpriv;
/* S-mask in a QH means it's an interrupt urb */
if ((qh->hw_info2 & __constant_cpu_to_le32 (0x00ff)) != 0) {
if ((qh->hw_info2 & __constant_cpu_to_le32 (QH_SMASK)) != 0) {
/* ... update hc-wide periodic stats (for usbfs) */
ehci_to_hcd(ehci)->self.bandwidth_int_reqs--;
@ -428,7 +428,8 @@ halt:
/* should be rare for periodic transfers,
* except maybe high bandwidth ...
*/
if (qh->period) {
if ((__constant_cpu_to_le32 (QH_SMASK)
& qh->hw_info2) != 0) {
intr_deschedule (ehci, qh);
(void) qh_schedule (ehci, qh);
} else

13
drivers/usb/host/ehci-sched.c
View File

@ -301,7 +301,7 @@ static int qh_link_periodic (struct ehci_hcd *ehci, struct ehci_qh *qh)
dev_dbg (&qh->dev->dev,
"link qh%d-%04x/%p start %d [%d/%d us]\n",
period, le32_to_cpup (&qh->hw_info2) & 0xffff,
period, le32_to_cpup (&qh->hw_info2) & (QH_CMASK | QH_SMASK),
qh, qh->start, qh->usecs, qh->c_usecs);
/* high bandwidth, or otherwise every microframe */
@ -385,7 +385,8 @@ static void qh_unlink_periodic (struct ehci_hcd *ehci, struct ehci_qh *qh)
dev_dbg (&qh->dev->dev,
"unlink qh%d-%04x/%p start %d [%d/%d us]\n",
qh->period, le32_to_cpup (&qh->hw_info2) & 0xffff,
qh->period,
le32_to_cpup (&qh->hw_info2) & (QH_CMASK | QH_SMASK),
qh, qh->start, qh->usecs, qh->c_usecs);
/* qh->qh_next still "live" to HC */
@ -411,7 +412,7 @@ static void intr_deschedule (struct ehci_hcd *ehci, struct ehci_qh *qh)
* active high speed queues may need bigger delays...
*/
if (list_empty (&qh->qtd_list)
|| (__constant_cpu_to_le32 (0x0ff << 8)
|| (__constant_cpu_to_le32 (QH_CMASK)
& qh->hw_info2) != 0)
wait = 2;
else
@ -533,7 +534,7 @@ static int qh_schedule (struct ehci_hcd *ehci, struct ehci_qh *qh)
/* reuse the previous schedule slots, if we can */
if (frame < qh->period) {
uframe = ffs (le32_to_cpup (&qh->hw_info2) & 0x00ff);
uframe = ffs (le32_to_cpup (&qh->hw_info2) & QH_SMASK);
status = check_intr_schedule (ehci, frame, --uframe,
qh, &c_mask);
} else {
@ -569,10 +570,10 @@ static int qh_schedule (struct ehci_hcd *ehci, struct ehci_qh *qh)
qh->start = frame;
/* reset S-frame and (maybe) C-frame masks */
qh->hw_info2 &= __constant_cpu_to_le32 (~0xffff);
qh->hw_info2 &= __constant_cpu_to_le32(~(QH_CMASK | QH_SMASK));
qh->hw_info2 |= qh->period
? cpu_to_le32 (1 << uframe)
: __constant_cpu_to_le32 (0xff);
: __constant_cpu_to_le32 (QH_SMASK);
qh->hw_info2 |= c_mask;
} else
ehci_dbg (ehci, "reused qh %p schedule\n", qh);

5
drivers/usb/host/ehci.h
View File

@ -385,6 +385,11 @@ struct ehci_qh {
__le32 hw_info1; /* see EHCI 3.6.2 */
#define QH_HEAD 0x00008000
__le32 hw_info2; /* see EHCI 3.6.2 */
#define QH_SMASK 0x000000ff
#define QH_CMASK 0x0000ff00
#define QH_HUBADDR 0x007f0000
#define QH_HUBPORT 0x3f800000
#define QH_MULT 0xc0000000
__le32 hw_current; /* qtd list - see EHCI 3.6.4 */
/* qtd overlay (hardware parts of a struct ehci_qtd) */

4
drivers/usb/host/isp116x-hcd.c
View File

@ -229,9 +229,11 @@ static void preproc_atl_queue(struct isp116x *isp116x)
struct isp116x_ep *ep;
struct urb *urb;
struct ptd *ptd;
u16 toggle = 0, dir = PTD_DIR_SETUP, len;
u16 len;
for (ep = isp116x->atl_active; ep; ep = ep->active) {
u16 toggle = 0, dir = PTD_DIR_SETUP;
BUG_ON(list_empty(&ep->hep->urb_list));
urb = container_of(ep->hep->urb_list.next,
struct urb, urb_list);

9
drivers/usb/mon/Kconfig
View File

@ -9,9 +9,8 @@ config USB_MON
help
If you say Y here, a component which captures the USB traffic
between peripheral-specific drivers and HC drivers will be built.
The USB_MON is similar in spirit and may be compatible with Dave
Harding's USBMon.
For more information, see <file:Documentation/usb/usbmon.txt>.
This is somewhat experimental at this time, but it should be safe,
as long as you aren't using modular USB and try to remove this
module.
This is somewhat experimental at this time, but it should be safe.
If unsure, say Y.

1
drivers/usb/mon/Makefile
View File

@ -4,4 +4,5 @@
usbmon-objs := mon_main.o mon_stat.o mon_text.o
# This does not use CONFIG_USB_MON because we want this to use a tristate.
obj-$(CONFIG_USB) += usbmon.o

9
fs/namei.c
View File

@ -1874,14 +1874,9 @@ int vfs_unlink(struct inode *dir, struct dentry *dentry)
/* We don't d_delete() NFS sillyrenamed files--they still exist. */
if (!error && !(dentry->d_flags & DCACHE_NFSFS_RENAMED)) {
#if defined(CONFIG_INOTIFY) || defined(CONFIG_DNOTIFY)
dget(dentry);
struct inode *inode = dentry->d_inode;
d_delete(dentry);
fsnotify_unlink(dentry, dir);
dput(dentry);
#else
d_delete(dentry);
#endif
fsnotify_unlink(dentry, inode, dir);
}
return error;

3
include/asm-alpha/pci.h
View File

@ -251,6 +251,9 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
extern void pcibios_resource_to_bus(struct pci_dev *, struct pci_bus_region *,
struct resource *);
extern void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region);
#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
static inline int pci_proc_domain(struct pci_bus *bus)

4
include/asm-arm/pci.h
View File

@ -60,6 +60,10 @@ extern void
pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
struct resource *res);
extern void
pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region);
static inline void pcibios_add_platform_entries(struct pci_dev *dev)
{
}

8
include/asm-generic/pci.h
View File

@ -22,6 +22,14 @@ pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
region->end = res->end;
}
static inline void
pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region)
{
res->start = region->start;
res->end = region->end;
}
#define pcibios_scan_all_fns(a, b) 0
#ifndef HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ

4
include/asm-parisc/pci.h
View File

@ -253,6 +253,10 @@ extern void
pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
struct resource *res);
extern void
pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region);
static inline void pcibios_add_platform_entries(struct pci_dev *dev)
{
}

4
include/asm-ppc/pci.h
View File

@ -105,6 +105,10 @@ extern void
pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
struct resource *res);
extern void
pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region);
extern void pcibios_add_platform_entries(struct pci_dev *dev);
struct file;

4
include/asm-ppc64/pci.h
View File

@ -134,6 +134,10 @@ extern void
pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
struct resource *res);
extern void
pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region);
extern int
unmap_bus_range(struct pci_bus *bus);

4
include/linux/fsnotify.h
View File

@ -46,10 +46,8 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
/*
* fsnotify_unlink - file was unlinked
*/
static inline void fsnotify_unlink(struct dentry *dentry, struct inode *dir)
static inline void fsnotify_unlink(struct dentry *dentry, struct inode *inode, struct inode *dir)
{
struct inode *inode = dentry->d_inode;
inode_dir_notify(dir, DN_DELETE);
inotify_inode_queue_event(dir, IN_DELETE, 0, dentry->d_name.name);
inotify_inode_queue_event(inode, IN_DELETE_SELF, 0, NULL);

3
include/linux/pci.h
View File

@ -225,6 +225,7 @@
#define PCI_PM_CAP_PME_D3cold 0x8000 /* PME# from D3 (cold) */
#define PCI_PM_CTRL 4 /* PM control and status register */
#define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */
#define PCI_PM_CTRL_NO_SOFT_RESET 0x0004 /* No reset for D3hot->D0 */
#define PCI_PM_CTRL_PME_ENABLE 0x0100 /* PME pin enable */
#define PCI_PM_CTRL_DATA_SEL_MASK 0x1e00 /* Data select (??) */
#define PCI_PM_CTRL_DATA_SCALE_MASK 0x6000 /* Data scale (??) */
@ -816,7 +817,9 @@ int pci_set_mwi(struct pci_dev *dev);
void pci_clear_mwi(struct pci_dev *dev);
int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask);
void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno);
int pci_assign_resource(struct pci_dev *dev, int i);
void pci_restore_bars(struct pci_dev *dev);
/* ROM control related routines */
void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size);

6
mm/mmap.c
View File

@ -143,7 +143,11 @@ int __vm_enough_memory(long pages, int cap_sys_admin)
leave 3% of the size of this process for other processes */
allowed -= current->mm->total_vm / 32;
if (atomic_read(&vm_committed_space) < allowed)
/*
* cast `allowed' as a signed long because vm_committed_space
* sometimes has a negative value
*/
if (atomic_read(&vm_committed_space) < (long)allowed)
return 0;
vm_unacct_memory(pages);

6
mm/nommu.c
View File

@ -1167,7 +1167,11 @@ int __vm_enough_memory(long pages, int cap_sys_admin)
leave 3% of the size of this process for other processes */
allowed -= current->mm->total_vm / 32;
if (atomic_read(&vm_committed_space) < allowed)
/*
* cast `allowed' as a signed long because vm_committed_space
* sometimes has a negative value
*/
if (atomic_read(&vm_committed_space) < (long)allowed)
return 0;
vm_unacct_memory(pages);

86
net/ipv4/tcp_output.c
View File

@ -403,11 +403,9 @@ static void tcp_queue_skb(struct sock *sk, struct sk_buff *skb)
sk->sk_send_head = skb;
}
static void tcp_set_skb_tso_segs(struct sock *sk, struct sk_buff *skb)
static void tcp_set_skb_tso_segs(struct sock *sk, struct sk_buff *skb, unsigned int mss_now)
{
struct tcp_sock *tp = tcp_sk(sk);
if (skb->len <= tp->mss_cache ||
if (skb->len <= mss_now ||
!(sk->sk_route_caps & NETIF_F_TSO)) {
/* Avoid the costly divide in the normal
* non-TSO case.
@ -417,10 +415,10 @@ static void tcp_set_skb_tso_segs(struct sock *sk, struct sk_buff *skb)
} else {
unsigned int factor;
factor = skb->len + (tp->mss_cache - 1);
factor /= tp->mss_cache;
factor = skb->len + (mss_now - 1);
factor /= mss_now;
skb_shinfo(skb)->tso_segs = factor;
skb_shinfo(skb)->tso_size = tp->mss_cache;
skb_shinfo(skb)->tso_size = mss_now;
}
}
@ -429,7 +427,7 @@ static void tcp_set_skb_tso_segs(struct sock *sk, struct sk_buff *skb)
* packet to the list. This won't be called frequently, I hope.
* Remember, these are still headerless SKBs at this point.
*/
static int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len)
static int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, unsigned int mss_now)
{
struct tcp_sock *tp = tcp_sk(sk);
struct sk_buff *buff;
@ -492,8 +490,8 @@ static int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len)
}
/* Fix up tso_factor for both original and new SKB. */
tcp_set_skb_tso_segs(sk, skb);
tcp_set_skb_tso_segs(sk, buff);
tcp_set_skb_tso_segs(sk, skb, mss_now);
tcp_set_skb_tso_segs(sk, buff, mss_now);
if (TCP_SKB_CB(skb)->sacked & TCPCB_LOST) {
tp->lost_out += tcp_skb_pcount(skb);
@ -569,7 +567,7 @@ int tcp_trim_head(struct sock *sk, struct sk_buff *skb, u32 len)
* factor and mss.
*/
if (tcp_skb_pcount(skb) > 1)
tcp_set_skb_tso_segs(sk, skb);
tcp_set_skb_tso_segs(sk, skb, tcp_current_mss(sk, 1));
return 0;
}
@ -734,12 +732,14 @@ static inline unsigned int tcp_cwnd_test(struct tcp_sock *tp, struct sk_buff *sk
/* This must be invoked the first time we consider transmitting
* SKB onto the wire.
*/
static inline int tcp_init_tso_segs(struct sock *sk, struct sk_buff *skb)
static inline int tcp_init_tso_segs(struct sock *sk, struct sk_buff *skb, unsigned int mss_now)
{
int tso_segs = tcp_skb_pcount(skb);
if (!tso_segs) {
tcp_set_skb_tso_segs(sk, skb);
if (!tso_segs ||
(tso_segs > 1 &&
skb_shinfo(skb)->tso_size != mss_now)) {
tcp_set_skb_tso_segs(sk, skb, mss_now);
tso_segs = tcp_skb_pcount(skb);
}
return tso_segs;
@ -817,7 +817,7 @@ static unsigned int tcp_snd_test(struct sock *sk, struct sk_buff *skb,
struct tcp_sock *tp = tcp_sk(sk);
unsigned int cwnd_quota;
tcp_init_tso_segs(sk, skb);
tcp_init_tso_segs(sk, skb, cur_mss);
if (!tcp_nagle_test(tp, skb, cur_mss, nonagle))
return 0;
@ -854,7 +854,7 @@ int tcp_may_send_now(struct sock *sk, struct tcp_sock *tp)
* know that all the data is in scatter-gather pages, and that the
* packet has never been sent out before (and thus is not cloned).
*/
static int tso_fragment(struct sock *sk, struct sk_buff *skb, unsigned int len)
static int tso_fragment(struct sock *sk, struct sk_buff *skb, unsigned int len, unsigned int mss_now)
{
struct sk_buff *buff;
int nlen = skb->len - len;
@ -887,8 +887,8 @@ static int tso_fragment(struct sock *sk, struct sk_buff *skb, unsigned int len)
skb_split(skb, buff, len);
/* Fix up tso_factor for both original and new SKB. */
tcp_set_skb_tso_segs(sk, skb);
tcp_set_skb_tso_segs(sk, buff);
tcp_set_skb_tso_segs(sk, skb, mss_now);
tcp_set_skb_tso_segs(sk, buff, mss_now);
/* Link BUFF into the send queue. */
skb_header_release(buff);
@ -972,19 +972,18 @@ static int tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle)
if (unlikely(sk->sk_state == TCP_CLOSE))
return 0;
skb = sk->sk_send_head;
if (unlikely(!skb))
return 0;
tso_segs = tcp_init_tso_segs(sk, skb);
cwnd_quota = tcp_cwnd_test(tp, skb);
if (unlikely(!cwnd_quota))
goto out;
sent_pkts = 0;
while (likely(tcp_snd_wnd_test(tp, skb, mss_now))) {
while ((skb = sk->sk_send_head)) {
tso_segs = tcp_init_tso_segs(sk, skb, mss_now);
BUG_ON(!tso_segs);
cwnd_quota = tcp_cwnd_test(tp, skb);
if (!cwnd_quota)
break;
if (unlikely(!tcp_snd_wnd_test(tp, skb, mss_now)))
break;
if (tso_segs == 1) {
if (unlikely(!tcp_nagle_test(tp, skb, mss_now,
(tcp_skb_is_last(sk, skb) ?
@ -1006,11 +1005,11 @@ static int tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle)
limit = skb->len - trim;
}
if (skb->len > limit) {
if (tso_fragment(sk, skb, limit))
if (tso_fragment(sk, skb, limit, mss_now))
break;
}
} else if (unlikely(skb->len > mss_now)) {
if (unlikely(tcp_fragment(sk, skb, mss_now)))
if (unlikely(tcp_fragment(sk, skb, mss_now, mss_now)))
break;
}
@ -1026,27 +1025,12 @@ static int tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle)
tcp_minshall_update(tp, mss_now, skb);
sent_pkts++;
/* Do not optimize this to use tso_segs. If we chopped up
* the packet above, tso_segs will no longer be valid.
*/
cwnd_quota -= tcp_skb_pcount(skb);
BUG_ON(cwnd_quota < 0);
if (!cwnd_quota)
break;
skb = sk->sk_send_head;
if (!skb)
break;
tso_segs = tcp_init_tso_segs(sk, skb);
}
if (likely(sent_pkts)) {
tcp_cwnd_validate(sk, tp);
return 0;
}
out:
return !tp->packets_out && sk->sk_send_head;
}
@ -1076,7 +1060,7 @@ void tcp_push_one(struct sock *sk, unsigned int mss_now)
BUG_ON(!skb || skb->len < mss_now);
tso_segs = tcp_init_tso_segs(sk, skb);
tso_segs = tcp_init_tso_segs(sk, skb, mss_now);
cwnd_quota = tcp_snd_test(sk, skb, mss_now, TCP_NAGLE_PUSH);
if (likely(cwnd_quota)) {
@ -1093,11 +1077,11 @@ void tcp_push_one(struct sock *sk, unsigned int mss_now)
limit = skb->len - trim;
}
if (skb->len > limit) {
if (unlikely(tso_fragment(sk, skb, limit)))
if (unlikely(tso_fragment(sk, skb, limit, mss_now)))
return;
}
} else if (unlikely(skb->len > mss_now)) {
if (unlikely(tcp_fragment(sk, skb, mss_now)))
if (unlikely(tcp_fragment(sk, skb, mss_now, mss_now)))
return;
}
@ -1388,7 +1372,7 @@ int tcp_retransmit_skb(struct sock *sk, struct sk_buff *skb)
int old_factor = tcp_skb_pcount(skb);
int new_factor;
if (tcp_fragment(sk, skb, cur_mss))
if (tcp_fragment(sk, skb, cur_mss, cur_mss))
return -ENOMEM; /* We'll try again later. */
/* New SKB created, account for it. */
@ -1991,7 +1975,7 @@ int tcp_write_wakeup(struct sock *sk)
skb->len > mss) {
seg_size = min(seg_size, mss);
TCP_SKB_CB(skb)->flags |= TCPCB_FLAG_PSH;
if (tcp_fragment(sk, skb, seg_size))
if (tcp_fragment(sk, skb, seg_size, mss))
return -1;
/* SWS override triggered forced fragmentation.
* Disable TSO, the connection is too sick. */
@ -2000,7 +1984,7 @@ int tcp_write_wakeup(struct sock *sk)
sk->sk_route_caps &= ~NETIF_F_TSO;
}
} else if (!tcp_skb_pcount(skb))
tcp_set_skb_tso_segs(sk, skb);
tcp_set_skb_tso_segs(sk, skb, mss);
TCP_SKB_CB(skb)->flags |= TCPCB_FLAG_PSH;
TCP_SKB_CB(skb)->when = tcp_time_stamp;