Commit Graph

99670 Commits

Author SHA1 Message Date
Jesse Brandeburg
2115a64329 ixgb: update readme text
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:20:28 -04:00
Jesse Brandeburg
db58294416 ixgb: remove lltx support and update tx routine
a) kernel developers suggest LLTX is broken and unsafe to use, remove it.
b) remember to pre-stop the queue if we won't have room
c) removing lltx means we can remove our tx lock

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:20:28 -04:00
Jesse Brandeburg
1257969724 ixgb: fix unload race with timers
ixgb needs to call flush scheduled work to flush any timers before
unregistering the netdev.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:20:28 -04:00
Jesse Brandeburg
b5ca88eb33 ixgb: fix race on rx_buffer_len in mtu change
some random coverage testing found that when changing mtu
under heavy traffic load, NAPI would use the rx_buffer_len variable
after it had been changed by change_mtu.

Similar to e1000 bugs found long ago.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:20:27 -04:00
Jesse Brandeburg
3433663546 ixgb: move time stamp set before setting dma pointer
a user pointed out that setting variables out of order with respect
to the checks we make for tx timeout handling could result in a race
where ->dma was set but ->time_stamp was set to the old value.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:20:27 -04:00
Jesse Brandeburg
a65a604a01 ixgb: don't allow too small MTU
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:20:27 -04:00
Jesse Brandeburg
72ab51954d ixgb: check down state before enable irq
in order to prevent the case where poll_disable is waiting
on our device to permanently, check the flag to make sure we're not
down or closing down before re-enabling interrupts.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:20:27 -04:00
Jesse Brandeburg
a3dc3da02a ixgb: leave room for extra hardware memory usage
ixgb hardware (not ixgbe) has a problem where it might dma past the
end of a buffer in certain cases.  leave 8 bytes extra room.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:20:27 -04:00
Jesse Brandeburg
4360386f7d ixgb: fix bug in descriptor ring due to prefetch corruption
there was one more bug hidden in the prefetch routines in ixgb hardware
that force us to remove it completely.  Writebacks were being done on
descriptors with stale data due to internal hardware fifo corruption.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:20:27 -04:00
Jesse Brandeburg
e539e4667e ixgb: repeat 32 bit ioremap cleanup
this patch has been made to many other drivers in kernel to fix
the storage of 64 bit resources in 32 bit variables.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:20:26 -04:00
Jesse Brandeburg
0f8ecbadae ixgb: maybe stop tx port missed a piece
back when maybe stop tx was added to the ixgb driver some mistakes
were made and the driver
a) didn't remove the tx lock, which is now un-necessary
b) didn't change the restart code to be compliant with maybe_stop

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:20:26 -04:00
Francois Romieu
1a342d224a ucc_geth: delete non NAPI code from the driver.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:11:45 -04:00
Francois Romieu
0aa1538f4e gianfar: delete non NAPI code from the driver.
Compile-tested only.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:11:44 -04:00
Francois Romieu
32b0f53e5b via-rhine: delete non NAPI code from the driver.
Compile-tested only.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:11:43 -04:00
Francois Romieu
4422b00390 cxgb: delete non NAPI code from the driver.
Compile-tested only.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:11:42 -04:00
Sreenivasa Honnur
29d0a2b0f7 S2io: Version update for IOMMU overflow checking and enable msi-x link interrupts patches.
- Updated version number

Signed-off-by: Santosh Rastapur <santosh.rastapur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:11:41 -04:00
Sreenivasa Honnur
01e16faa06 S2io: Enable msi-x link interrupts.
- Enable msi-x link interrupts because the timer based scheduler was getting
cancelled causing the link state to be lost with repetitive card up/downs
when changing the mtu.
- Unmask mac_rmac_link interrupts only for Xframe I and prevent a spurious
link interrupt in Xframe II.
- Stop the tx queue and indicate link down when card is down

Signed-off-by: Santosh Rastapur <santosh.rastapur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:11:40 -04:00
Sreenivasa Honnur
3f78d88575 S2io: Fix IOMMU overflow checking.
- Fix IOMMU overflow checking. As reported by Andi Kleen <ak@linux.intel.com>
removed check for zero dma address.

Signed-off-by: Santosh Rastapur <santosh.rastapur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:11:39 -04:00
Francois Romieu
9088d9a426 via-velocity: add velocity_set_rxbufsize helper
It removes a dependancy from velocity_init_rd_ring to dev->mtu.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:10:15 -04:00
Francois Romieu
2813317608 via-velocity: move residual free rx descriptors count register update
Updates of the RBRDU have two different meanings depending on their
context:
1. the receiving process has not started - the value which is written
   into the RBRDU register is supposed to be the free rx descriptors
   count (rounded to a multiple of 4)
2. the receiving process is running - the value increments the count
   above (sic)

The update is currently issued deep inside the rx replenish chain (see
velocity_give_many_rx_descs).

Let's propagate enough information to the caller so that the rx
replenish functions do not depend on hardware any more.

It is needed to perform the Rx/Tx buffers housekeeping when MTU changes.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:10:15 -04:00
Francois Romieu
8ac53afccf via-velocity: lean and clean velocity_init_rings
- PCI consistent areas need no memset
- use dev_err instead of plain printk
- avoid a few casts

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:10:14 -04:00
Francois Romieu
580a690208 via-velocity: remove the bounce buffers
Executive summary: the bounce buffers are in my way

- they use something like a 64 * 1500 bytes area of PCI
  consistent area
- they are not resized when the MTU changes
- they are used
  - to hand-pad undersized packets. skb_pad anyone ?
  - to linearize fragmented skbs whose fragment count
    goes beyond the 7 fragments hardware limit in order
    to claim scatter-gather support

Actually the SG code is commented out and I wonder if it
could not be implemented (ab-)using the large send feature
of the chipset since the latter should support some
multi-descriptor packet transmitting.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Fixed-by: Séguier Régis <rseguier@e-teleport.net>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-07-11 01:10:13 -04:00
David S. Miller
79d16385c7 netdev: Move atomic queue state bits into netdev_queue.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 23:14:46 -07:00
David S. Miller
b19fa1fa91 net: Delete NETDEVICES_MULTIQUEUE kconfig option.
Multiple TX queue support is a core networking feature.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 23:14:24 -07:00
David S. Miller
c773e847ea netdev: Move _xmit_lock and xmit_lock_owner into netdev_queue.
Accesses are mostly structured such that when there are multiple TX
queues the code transformations will be a little bit simpler.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 23:13:53 -07:00
David S. Miller
eb6aafe3f8 pkt_sched: Make qdisc_run take a netdev_queue.
This allows us to use this calling convention all the way down into
qdisc_restart().

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 23:12:38 -07:00
David S. Miller
86d804e10a netdev: Make netif_schedule() routines work with netdev_queue objects.
Only plain netif_schedule() remains taking a net_device, mostly as a
compatability item while we transition the rest of these interfaces.

Everything else calls netif_schedule_queue() or __netif_schedule(),
both of which take a netdev_queue pointer.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 23:11:25 -07:00
David S. Miller
970565bbad netdev: Move gso_skb into netdev_queue.
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 23:10:33 -07:00
David S. Miller
c2aa288548 mac80211: Decrease number of explicit ->tx_queue references.
Accomplish this by using local variables.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 23:01:52 -07:00
David S. Miller
052979499c pkt_sched: Add qdisc_tx_is_noop() helper and use in IPV6.
This indicates if the NOOP scheduler is what is active for TX on a
given device.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 23:01:27 -07:00
David S. Miller
6fa9864b53 net: Clean up explicit ->tx_queue references in link watch.
First, we add a qdisc_tx_changing() helper which returns true if the
qdisc attachment is in transition.

Second, we remove an assertion warning which is of limited value and
is hard to express precisely in a multiqueue environment.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 23:01:06 -07:00
David S. Miller
3e745dd695 pkt_sched: Add qdisc_all_tx_empty()
This is a helper function, currently used by IRDA.

This is being added so that we can contain and isolate as many
explicit ->tx_queue references in the tree as possible.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 23:00:25 -07:00
David S. Miller
5aa709954a pkt_sched: Add qdisc_reset_all_tx().
Isolate callers that want to simply reset all the TX qdiscs from the
details of TX queues.

Use this in the ISDN code.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 22:59:10 -07:00
David S. Miller
ee609cb362 netdev: Move next_sched into struct netdev_queue.
We schedule queues, not the device, for output queue processing in BH.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 22:58:37 -07:00
David S. Miller
74d58a0c1d pkt_sched: Make netem queue agnostic.
It just wants the root qdisc given an arbitrary qdisc,
and that is simply qdisc->dev_queue->qdisc

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
2008-07-08 22:57:51 -07:00
David S. Miller
68dfb42798 pkt_sched: Kill stats_lock member of struct Qdisc.
It is always equal to qdisc->dev_queue->lock

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 22:57:31 -07:00
David S. Miller
816f3258e7 netdev: Kill qdisc_ingress, use netdev->rx_queue.qdisc instead.
Now that our qdisc management is bi-directional, per-queue, and fully
orthogonal, there is no reason to have a special ingress qdisc pointer
in struct net_device.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 22:49:00 -07:00
David S. Miller
b0e1e6462d netdev: Move rest of qdisc state into struct netdev_queue
Now qdisc, qdisc_sleeping, and qdisc_list also live there.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 17:42:10 -07:00
David S. Miller
555353cfa1 netdev: The ingress_lock member is no longer needed.
Every qdisc is assosciated with a queue, and in the case of ingress
qdiscs that will now be netdev->rx_queue so using that queue's lock is
the thing to do.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 17:33:13 -07:00
David S. Miller
dc2b48475a netdev: Move queue_lock into struct netdev_queue.
The lock is now an attribute of the device queue.

One thing to notice is that "suspicious" places
emerge which will need specific training about
multiple queue handling.  They are so marked with
explicit "netdev->rx_queue" and "netdev->tx_queue"
references.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 17:18:23 -07:00
David S. Miller
5ce2d488fe pkt_sched: Remove 'dev' member of struct Qdisc.
It can be obtained via the netdev_queue.  So create a helper routine,
qdisc_dev(), to make the transformations nicer looking.

Now, qdisc_alloc() now no longer needs a net_device pointer argument.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 17:06:30 -07:00
David S. Miller
bb949fbd18 netdev: Create netdev_queue abstraction.
A netdev_queue is an entity managed by a qdisc.

Currently there is one RX and one TX queue, and a netdev_queue merely
contains a backpointer to the net_device.

The Qdisc struct is augmented with a netdev_queue pointer as well.

Eventually the 'dev' Qdisc member will go away and we will have the
resulting hierarchy:

	net_device --> netdev_queue --> Qdisc

Also, qdisc_alloc() and qdisc_create_dflt() now take a netdev_queue
pointer argument.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 16:55:56 -07:00
David S. Miller
e65d22e180 pkt_sched: Remove comment reference to old style TX locking.
We haven't had netdev->tbusy in many years :)

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 16:46:01 -07:00
David S. Miller
7c3ceb4a40 Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:

	drivers/net/wireless/iwlwifi/iwl-3945.c
	net/mac80211/mlme.c
2008-07-08 16:30:17 -07:00
David S. Miller
54dceb008f Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/linville/wireless-next-2.6 2008-07-08 15:39:41 -07:00
Patrick McHardy
11a100f844 vlan: avoid header copying and linearisation where possible
- vlan_dev_reorder_header() is only called on the receive path after
  calling skb_share_check(). This means we can use skb_cow() since
  all we need is a writable header.

- vlan_dev_hard_header() includes a work-around for some apparently
  broken out of tree MPLS code. The hard_header functions can expect
  to always have a headroom of at least there own hard_header_len
  available, so the reallocation check is unnecessary.

- __vlan_put_tag() can use skb_cow_head() to avoid the skb_unshare()
  copy when the header is writable.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 15:36:57 -07:00
Andrey Vagin
b223856640 ipv6: fix race between ipv6_del_addr and DAD timer
Consider the following scenario:

ipv6_del_addr(ifp)
  ipv6_ifa_notify(RTM_DELADDR, ifp)
    ip6_del_rt(ifp->rt)

after returning from the ipv6_ifa_notify and enabling BH-s
back, but *before* calling the addrconf_del_timer the 
ifp->timer fires and:

addrconf_dad_timer(ifp)
  addrconf_dad_completed(ifp)
    ipv6_ifa_notify(RTM_NEWADDR, ifp)
      ip6_ins_rt(ifp->rt)

then return back to the ipv6_del_addr and:

in6_ifa_put(ifp)
  inet6_ifa_finish_destroy(ifp)
    dst_release(&ifp->rt->u.dst)

After this we have an ifp->rt inserted into fib6 lists, but 
queued for gc, which in turn can result in oopses in the
fib6_run_gc. Maybe some other nasty things, but we caught 
only the oops in gc so far.

The solution is to disarm the ifp->timer before flushing the
rt from it.

Signed-off-by: Andrey Vagin <avagin@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-08 15:13:31 -07:00
Julius Volz
b46372710a net/wireless/nl80211.c: fix endless Netlink callback loop.
Although I only tested similar code (I don't use any of this wireless
code), the state maintainance between Netlink dump callback invocations
seems wrong here and should lead to an endless loop. There are also other
examples in the same file which might have the same problem. Perhaps someone
can actually test this (or refute my logic).

Take the simple example with only one element in the list (which should fit
into the message):

1. invocation:
  Start:
    idx = 0, start = 0
  Loop:
    condition (++idx < start) => (1 < 0) => false
    => no continue, fill one entry, exit loop, return skb->len > 0

2. invocation:
  Start:
    idx = 0, start = 1
  Loop:
    condition (++idx < start) => (1 < 1) => false
    => no continue, fill the same entry again, exit loop, return skb->len > 0

3. invocation:
  Same as 2. invocation, endless invocation of callback.

Also, iterations where the filling of an element fails should not be counted as
completed, so idx should not be incremented in this case.

Signed-off-by: Julius Volz <juliusv@google.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-07-08 14:16:08 -04:00
Larry Finger
0e25b4ef22 rtl8187: Change detection of RTL8187B with USB ID of 8187
Some early versions of RTL8187B devices have a USB ID of 0x8187
rather than the 0x8189 of later models. In addition, it appears
that these early units also must be programmed with lower power.
Previous patches used the Product ID string to detect this situation,
but did not address the low power question. This patch uses the
hardware version and sets the power accordingly.

Signed-off-by: Hin-Tak Leung <htl10@users.sourceforge.net>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-07-08 14:16:07 -04:00
Hin-Tak Leung
5c036b217a rtl8187: updating Kconfig to support RTL8187B
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
Signed-off-by: Hin-Tak Leung <htl10@users.sourceforge.net>
Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2008-07-08 14:16:07 -04:00