9 years agoPhonet: look up the resource routing table when forwarding
Rémi Denis-Courmont [Wed, 15 Sep 2010 12:30:13 +0000]
Phonet: look up the resource routing table when forwarding

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoPhonet: hook resource routing to userspace via ioctl()'s
Rémi Denis-Courmont [Wed, 15 Sep 2010 12:30:12 +0000]
Phonet: hook resource routing to userspace via ioctl()'s

I wish we could use something cleaner, such as bind(). But that would
not work since resource subscription is orthogonal/in addition to the
normal object ID allocated via bind(). This is similar to multicasting
which also uses ioctl()'s.

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoPhonet: resource routing backend
Rémi Denis-Courmont [Wed, 15 Sep 2010 12:30:11 +0000]
Phonet: resource routing backend

When both destination device and object are nul, Phonet routes the
packet according to the resource field. In fact, this is the most
common pattern when sending Phonet "request" packets. In this case,
the packet is delivered to whichever endpoint (socket) has
registered the resource.

This adds a new table so that Linux processes can register their
Phonet sockets to Phonet resources, if they have adequate privileges.

(Namespace support is not implemented at the moment.)

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoPhonet: remove dangling pipe if an endpoint is closed early
Rémi Denis-Courmont [Wed, 15 Sep 2010 12:19:53 +0000]
Phonet: remove dangling pipe if an endpoint is closed early

Closing a pipe endpoint is not normally allowed by the Phonet pipe,
other than as a side after-effect of removing the pipe between two
endpoints. But there is no way to prevent Linux userspace processes
from being killed or suffering from bugs, so this can still happen.
We might as well forcefully close Phonet pipe endpoints then.

The cellular modem supports only a few existing pipes at a time. So we
really should not leak them. This change instructs the modem to destroy
the pipe if either of the pipe's endpoint (Linux socket) is closed too
early.

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoMerge branch 'dccp' of git://eden-feed.erg.abdn.ac.uk/net-next-2.6
David S. Miller [Thu, 16 Sep 2010 03:21:48 +0000]
Merge branch 'dccp' of git://eden-feed.erg.abdn.ac.uk/net-next-2.6

9 years agomisdn: kill big kernel lock
Arnd Bergmann [Tue, 14 Sep 2010 09:35:05 +0000]
misdn: kill big kernel lock

The use of the big kernel lock in misdn is completely
bogus, so let's just remove it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoi4l: kill big kernel lock
Arnd Bergmann [Tue, 14 Sep 2010 09:35:04 +0000]
i4l: kill big kernel lock

The isdn4linux driver uses the big kernel lock only
to serialize access to a few fields in its own
modem_info structure.

The easiest replacement is a driver-wide mutex.
More fine-grained locking would be more appropriate
here, but likely harder to implement.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Karsten Keil <isdn@linux-pingi.de>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoirda/irnet: use noop_llseek
Arnd Bergmann [Tue, 14 Sep 2010 10:22:36 +0000]
irda/irnet: use noop_llseek

There may be applications trying to seek
on the irnet character device, so we should
use noop_llseek to avoid returning an error
when the default llseek changes to no_llseek.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosit: get rid of ipip6_lock
Eric Dumazet [Wed, 15 Sep 2010 11:35:10 +0000]
sit: get rid of ipip6_lock

As RTNL is held while doing tunnels inserts and deletes, we can remove
ipip6_lock spinlock. My initial RCU conversion was conservative and
converted the rwlock to spinlock, with no RTNL requirement.

Use appropriate rcu annotations and modern lockdep checks as well.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agogre: get rid of ipgre_lock
Eric Dumazet [Wed, 15 Sep 2010 11:07:53 +0000]
gre: get rid of ipgre_lock

As RTNL is held while doing tunnels inserts and deletes, we can remove
ipgre_lock spinlock. My initial RCU conversion was conservative and
converted the rwlock to spinlock, with no RTNL requirement.

Use appropriate rcu annotations and modern lockdep checks as well.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoipip: get rid of ipip_lock
Eric Dumazet [Wed, 15 Sep 2010 11:07:24 +0000]
ipip: get rid of ipip_lock

As RTNL is held while doing tunnels inserts and deletes, we can remove
ipip_lock spinlock. My initial RCU conversion was conservative and
converted the rwlock to spinlock, with no RTNL requirement.

Use appropriate rcu annotations and modern lockdep checks as well.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agonet: add rtnl_dereference()
Eric Dumazet [Wed, 15 Sep 2010 11:07:15 +0000]
net: add rtnl_dereference()

We sometime want to dereference an rcu protected pointer while
holding RTNL. Use a macro to hide all lockdep details.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoethtool: Remove unimplemented flow specification types
Ben Hutchings [Tue, 14 Sep 2010 09:13:08 +0000]
ethtool: Remove unimplemented flow specification types

struct ethtool_rawip4_spec and struct ethtool_ether_spec are neither
commented nor used by any driver, so remove them.  Adjust padding in
the user-visible unions that included these structures.

Fix references to struct ethtool_rawip4_spec in
ethtool_get_rx_ntuple(), which should use struct ethtool_usrip4_spec.

struct ethtool_usrip4_spec cannot hold IPv6 host addresses and there
is no separate structure that can, so remove ETH_RX_NFC_IP6 and the
reference to it in niu.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoethtool: Complete kernel-doc comments for RX flow filter and hash control
Ben Hutchings [Tue, 14 Sep 2010 09:10:03 +0000]
ethtool: Complete kernel-doc comments for RX flow filter and hash control

There are now several interfaces within the ethtool API for getting
and setting RX flow filtering and hashing behaviour, most of which are
poorly documented.  This adds kernel-doc comments for all these
interfaces, based on the existing incomplete comments and on the
initial implementations.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agotg3: phy tmp variable roundup
Matt Carlson [Wed, 15 Sep 2010 09:00:01 +0000]
tg3: phy tmp variable roundup

The tg3's phy routines define temporary variables in many locations
within the same routine.  This patch unifies all temporary variables
into one location.

Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agotg3: Dynamically allocate VPD data memory
Matt Carlson [Wed, 15 Sep 2010 09:00:00 +0000]
tg3: Dynamically allocate VPD data memory

This patch eases stack pressure by dynamically allocating the memory
used to temporarily store VPD data.

Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agotg3: Use skb_is_gso_v6()
Matt Carlson [Wed, 15 Sep 2010 08:59:59 +0000]
tg3: Use skb_is_gso_v6()

This patch converts the driver to prefer the skb_is_gso_v6() helper over
the explicit inlined version.

Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agotg3: Move producer ring struct to tg3_napi
Matt Carlson [Wed, 15 Sep 2010 08:59:58 +0000]
tg3: Move producer ring struct to tg3_napi

Now that each NAPI instance has its own producer ring, it no longer
makes sense to keep the producer ring structure external.  This patch
migrates the producer ring struct to tg3_napi and pivots the code to the
new implementation.

Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agotg3: Clarify semantics of TG3_IRQ_MAX_VECS
Matt Carlson [Wed, 15 Sep 2010 08:59:57 +0000]
tg3: Clarify semantics of TG3_IRQ_MAX_VECS

TG3_IRQ_MAX_VECS should be seen as the maximum number of vectors that
any device could be expected to use.  tp->irq_max represents the maximum
number of vectors the current device can use.  This patch clarifies the
semantics of the code to match the above description.

Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agotg3: Unlock 5717 B0+ support
Matt Carlson [Wed, 15 Sep 2010 08:59:56 +0000]
tg3: Unlock 5717 B0+ support

This patch adjusts the driver to use the tg3_start_xmit_dma_bug()
transmit routine for all revisions of 5717 asic rev devices and then
allows the driver to attach to B0 and later devices.

Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agotg3: Don't send APE events for NCSI firmware
Matt Carlson [Wed, 15 Sep 2010 08:59:55 +0000]
tg3: Don't send APE events for NCSI firmware

NCSI firmware does not accept APE events.  It relies on a "driver state"
location in shared memory to tell it what the driver's current state is.

This patch pivots the code to use the new driver state scheme.

Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agotg3: Disable TSS
Matt Carlson [Wed, 15 Sep 2010 08:59:54 +0000]
tg3: Disable TSS

It was recently discovered that enabling TSS can lockup the device.
This patch disables the feature until a suitable workaround can be
found.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agotg3: Fix read DMA FIFO overruns on recent devices
Matt Carlson [Wed, 15 Sep 2010 08:59:53 +0000]
tg3: Fix read DMA FIFO overruns on recent devices

Earlier versions of tg3 devices had a problem where the read DMA FIFO
could be overrun in certain edge conditions.  The fix was to limit the
number of rx BDs the hardware would fetch at a time.  For later devices
(5761, 5784 and later ASIC revs), there is a hardware fix that must be
enabled to fix the same problem.  This patch adds that hardware fix.

There is a gap in the ASIC revision lineage where neither fix is
applied.  This is intentional as these ASIC revisions are not afflicted
by the bug.

Reviewed-by: Benjamin Li <benli@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agodccp ccid-3: Simplify and consolidate tx_parse_options
Gerrit Renker [Tue, 14 Sep 2010 18:21:29 +0000]
dccp ccid-3: Simplify and consolidate tx_parse_options

This simplifies and consolidates the TX option-parsing code:

 1. The Loss Intervals option is not currently used, so dead code related to
    this option is removed. I am aware of no plans to support the option, but
    if someone wants to implement it (e.g. for inter-op tests), it is better
    to start afresh than having to also update currently unused code.

 2. The Loss Event and Receive Rate options have a lot of code in common (both
    are 32 bit, both have same length etc.), so this is consolidated.

 3. The test against GSR is not necessary, because
    - on first loading CCID3, ccid_new() zeroes out all fields in the socket;
    - ccid3_hc_tx_packet_recv() treats 0 and ~0U equivalently, due to

pinv = opt_recv->ccid3or_loss_event_rate;
if (pinv == ~0U || pinv == 0)
hctx->p = 0;

    - as a result, the sequence number field is removed from opt_recv.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>

9 years agodccp ccid-3: remove buggy RTT-sampling history lookup
Gerrit Renker [Tue, 14 Sep 2010 18:18:00 +0000]
dccp ccid-3: remove buggy RTT-sampling history lookup

This removes the RTT-sampling function tfrc_tx_hist_rtt(), since

 1. it suffered from complex passing of return values (the return value both
    indicated successful lookup while the value doubled as RTT sample);

 2. when for some odd reason the sample value equalled 0, this triggered a bug
    warning about "bogus Ack", due to the ambiguity of the return value;

 3. on a passive host which has not sent anything the TX history is empty and
    thus will lead to unwanted "bogus Ack" warnings such as
    ccid3_hc_tx_packet_recv: server(e7b7d518): DATAACK with bogus ACK-28197148
    ccid3_hc_tx_packet_recv: server(e7b7d518): DATAACK with bogus ACK-26641606.

The fix is to replace the implicit encoding by performing the steps manually.

Furthermore, the "bogus Ack" warning has been removed, since it can actually be
triggered due to several reasons (network reordering, old packet, (3) above),
hence it is not very useful.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>

9 years agodccp ccid-3: A lower bound for the inter-packet scheduling algorithm
Gerrit Renker [Tue, 14 Sep 2010 18:16:59 +0000]
dccp ccid-3: A lower bound for the inter-packet scheduling algorithm

This fixes a subtle bug in the calculation of the inter-packet gap and shows
that t_delta, as it is currently used, is not needed.

The algorithm from RFC 5348, 8.3 below continually computes a send time t_nom,
which is initialised with the current time t_now; t_gran = 1E6 / HZ specifies
the scheduling granularity, s the packet size, and X the sending rate:

  t_distance = t_nom - t_now; // in microseconds
  t_delta    = min(t_ipi, t_gran) / 2; // `delta' parameter in microseconds

  if (t_distance >= t_delta) {
reschedule after (t_distance / 1000) milliseconds;
  } else {
   t_ipi  = s / X; // inter-packet interval in usec
t_nom += t_ipi; // compute the next send time
send packet now;
  }

Problem:
--------
Rescheduling requires a conversion into milliseconds (sk_reset_timer()). The
highest jiffy resolution with HZ=1000 is 1 millisecond, so using a higher
granularity does not make much sense here.

As a consequence, values of t_distance < 1000 are truncated to 0. This issue
has so far been resolved by using instead

  if (t_distance >= t_delta + 1000)
reschedule after (t_distance / 1000) milliseconds;

This is unnecessarily large, a lower bound is t_delta' = max(t_delta, 1000).
And it implies a further simplification:

 a) when HZ >= 500, then t_delta <= t_gran/2 = 10^6/(2*HZ) <= 1000, so that
    t_delta' = MAX(1000, t_delta) = 1000 (constant value);

 b) when HZ < 500, then t_delta = 1/2*MIN(rtt, t_ipi, t_gran) <= t_gran/2,
    so that 1000 <= t_delta' <= t_gran/2.

The maximum error of using a constant t_delta in (b) is less than half a jiffy.

Fix:
----
The patch replaces t_delta with a constant, whose value depends on CONFIG_HZ,
changing the above algorithm to:

  if (t_distance >= t_delta')
reschedule after (t_distance / 1000) milliseconds;

where t_delta' = 10^6/(2*HZ) if HZ < 500, and t_delta' = 1000 otherwise.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>

9 years agoX.25 remove bkl in connect
andrew hendry [Tue, 14 Sep 2010 13:32:03 +0000]
X.25 remove bkl in connect

Connect already has socket locking.

Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoX.25 remove bkl in accept
Andrew Hendry [Wed, 15 Sep 2010 03:38:54 +0000]
X.25 remove bkl in accept

Accept already has socket locking.

[ Extend socket locking over TCP_LISTEN state test. -DaveM ]

Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoX.25 remove bkl in bind
andrew hendry [Tue, 14 Sep 2010 13:31:38 +0000]
X.25 remove bkl in bind

Accept updates socket values in 3 lines so wrapped with lock_sock.

Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoX.25 remove bkl in listen
andrew hendry [Tue, 14 Sep 2010 13:31:16 +0000]
X.25 remove bkl in listen

Listen updates socket values and needs lock_sock.

Signed-off-by: Andrew Hendry <andrew.hendry@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agonet/irda: Use static const char * const where possible
Joe Perches [Mon, 13 Sep 2010 18:24:01 +0000]
net/irda: Use static const char * const where possible

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agodrivers/net/wireless: Use static const char * const where possible
Joe Perches [Mon, 13 Sep 2010 18:23:55 +0000]
drivers/net/wireless: Use static const char * const where possible

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agodrivers/net/pcmcia: Use static const char * const where possible
Joe Perches [Mon, 13 Sep 2010 18:23:54 +0000]
drivers/net/pcmcia: Use static const char * const where possible

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agodrivers/net: Use static const char * const where possible
Joe Perches [Mon, 13 Sep 2010 18:23:53 +0000]
drivers/net: Use static const char * const where possible

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agodrivers/isdn: Use static const char * const where possible
Joe Perches [Mon, 13 Sep 2010 18:23:52 +0000]
drivers/isdn: Use static const char * const where possible

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoe1000e: Simplify MSI interrupt testing
Jean Delvare [Sun, 12 Sep 2010 22:45:39 +0000]
e1000e: Simplify MSI interrupt testing

The code is quite convoluted, simplify it. This also avoids calling
e1000_request_irq() without testing the value it returned, which was
bad.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Bruce Allan <bruce.w.allan@intel.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agouwb: use '%pM' format to print MAC address
Andy Shevchenko [Sun, 12 Sep 2010 08:16:26 +0000]
uwb: use '%pM' format to print MAC address

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agobnx2x: Spread rx buffers between allocated queues
Dmitry Kravkov [Sun, 12 Sep 2010 05:48:28 +0000]
bnx2x: Spread rx buffers between allocated queues

Default number of rx buffers will be divided equally
 between allocated queues. This will decrease amount of
 pre-allocated buffers on systems with multiple CPUs.
 User can override this behavior with ethtool -G.
 Minimum amount of rx buffers per queue set to 128.

Reported-by: Eric Dumazet <eric.dumazet@gmail.com>

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agocx82310_eth: allow empty URBs
Ondrej Zary [Sat, 11 Sep 2010 05:40:16 +0000]
cx82310_eth: allow empty URBs

Empty received URBs are currently counted as errors but the device sends them
sometimes as part of regular traffic - so remove this check.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agocx82310_eth: check usb_string() return value for error
Ondrej Zary [Sat, 11 Sep 2010 05:39:57 +0000]
cx82310_eth: check usb_string() return value for error

Fix that usb_string() return value is not checked for error (negative value).
Also change the ignore message a bit and lower its level to info.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agodrivers/net/skfp: Remove pr_<level> uses of KERN_<level>
Joe Perches [Sat, 11 Sep 2010 19:10:56 +0000]
drivers/net/skfp: Remove pr_<level> uses of KERN_<level>

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agonet/cxgb3: remove undefined operations
Andreas Schwab [Sat, 11 Sep 2010 01:12:34 +0000]
net/cxgb3: remove undefined operations

Modifying an object twice without an intervening sequence point is
undefined.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agonet/de4x5: remove undefined operations
Andreas Schwab [Sat, 11 Sep 2010 01:08:58 +0000]
net/de4x5: remove undefined operations

Modifying an object twice without an intervening sequence point is
undefined.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosundance: Add power management hooks
Denis Kirjanov [Fri, 10 Sep 2010 23:23:13 +0000]
sundance: Add power management hooks

This patch to adds support for PM hooks into sundance driver

Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoflow: better memory management
Eric Dumazet [Fri, 10 Sep 2010 07:00:25 +0000]
flow: better memory management

Allocate hash tables for every online cpus, not every possible ones.

NUMA aware allocations.

Dont use a full page on arches where PAGE_SIZE > 1024*sizeof(void *)

misc:
  __percpu , __read_mostly, __cpuinit annotations
  flow_compare_t is just an "unsigned long"

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosfc: Fix order of channel_name array dimensions
Ben Hutchings [Mon, 13 Sep 2010 04:14:49 +0000]
sfc: Fix order of channel_name array dimensions

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agobna: Check for NULL before deref in bnad_cb_tx_cleanup
David S. Miller [Sun, 12 Sep 2010 19:06:00 +0000]
bna: Check for NULL before deref in bnad_cb_tx_cleanup

Reported-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agopkt_sched: remov unnecessary bh_disable
stephen hemminger [Wed, 8 Sep 2010 09:16:28 +0000]
pkt_sched: remov unnecessary bh_disable

Now that est_tree_lock is acquired with BH protection, the other
call is unnecessary.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agofib: cleanups
Eric Dumazet [Thu, 9 Sep 2010 23:32:28 +0000]
fib: cleanups

Use rcu_dereference_rtnl() helper

Change hard coded constants in fib_flag_trans()
 7 -> RTN_UNREACHABLE
 8 -> RTN_PROHIBIT

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosfc: Allow changing the DMA ring sizes dynamically via ethtool
Ben Hutchings [Fri, 10 Sep 2010 06:42:33 +0000]
sfc: Allow changing the DMA ring sizes dynamically via ethtool

This requires some reorganisation of channel setup and teardown to
ensure that we can always roll-back a failed change.

Based on work by Steve Hodgson <shodgson@solarflare.com>

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosfc: Make the dmaq size a run-time setting (rather than compile-time)
Steve Hodgson [Fri, 10 Sep 2010 06:42:22 +0000]
sfc: Make the dmaq size a run-time setting (rather than compile-time)

- Allow the ring size to be specified in non
   power-of-two sizes (for instance to limit
   the amount of receive buffers).
 - Automatically size the event queue.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosfc: Allocate each channel separately, along with its RX and TX queues
Ben Hutchings [Fri, 10 Sep 2010 06:41:57 +0000]
sfc: Allocate each channel separately, along with its RX and TX queues

This will allow for reallocation of channel structures and rings.

Change module parameter separate_tx_channels to be read-only, since we
now require its value to be constant.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosfc: Refactor channel and queue lookup and iteration
Ben Hutchings [Fri, 10 Sep 2010 06:41:47 +0000]
sfc: Refactor channel and queue lookup and iteration

In preparation for changes to the way channels and queue structures
are allocated, revise the macros and functions used to look up and
iterator over them.

- Replace efx_for_each_tx_queue() with iteration over channels then TX
  queues
- Replace efx_for_each_rx_queue() with iteration over channels then RX
  queues (with one exception, shortly to be removed)
- Introduce efx_get_{channel,rx_queue,tx_queue}() functions to look up
  channels and queues by index
- Introduce efx_channel_get_{rx,tx}_queue() functions to look up a
  channel's queues

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosfc: Abstract channel and index lookup for RX queues
Ben Hutchings [Fri, 10 Sep 2010 06:41:36 +0000]
sfc: Abstract channel and index lookup for RX queues

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosfc: Allocate DMA and event rings using GFP_KERNEL
Ben Hutchings [Fri, 10 Sep 2010 06:41:26 +0000]
sfc: Allocate DMA and event rings using GFP_KERNEL

Currently we allocate DMA descriptor rings and event rings using
pci_alloc_consistent() which selects non-blocking behaviour from the
page allocator (GFP_ATOMIC). This is unnecessary, and since we
currently allocate a single contiguous block for each ring (up to 32
pages!) these allocations are likely to fail if there is any
significant memory pressure.  Use dma_alloc_coherent() and GFP_KERNEL
instead.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosfc: Fix failure paths in efx_probe_port()
Ben Hutchings [Fri, 10 Sep 2010 06:41:19 +0000]
sfc: Fix failure paths in efx_probe_port()

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosfc: Remove declarations of functions that no longer exist
Ben Hutchings [Fri, 10 Sep 2010 06:41:12 +0000]
sfc: Remove declarations of functions that no longer exist

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosfc: Accumulate RX_NODESC_DROP count in rx_dropped, not rx_over_errors
Ben Hutchings [Fri, 10 Sep 2010 06:41:06 +0000]
sfc: Accumulate RX_NODESC_DROP count in rx_dropped, not rx_over_errors

rx_over_errors appears to be intended as a count of packets that
overflow a packet buffer in the NIC.  Given that we implement a
cut-through receive path, this should always be 0.

rx_dropped appears to be the correct counter for packets dropped due
to lack of host buffers.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosfc: Use MCDI RX_BAD_FCS_PKTS count as MAC rx_bad count
Ben Hutchings [Fri, 10 Sep 2010 06:41:00 +0000]
sfc: Use MCDI RX_BAD_FCS_PKTS count as MAC rx_bad count

Calculating rx_bad as rx_packets - rx_good is unnecessary and
incorrect, since rx_good does not include control frames (e.g.
pause frames) and rx_packets does.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoMerge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
David S. Miller [Fri, 10 Sep 2010 05:27:33 +0000]
Merge branch 'master' of /linux/kernel/git/davem/net-2.6

Conflicts:
net/mac80211/main.c

9 years agoMerge branch 'vhost-net' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
David S. Miller [Fri, 10 Sep 2010 04:59:51 +0000]
Merge branch 'vhost-net' of git://git./linux/kernel/git/mst/vhost

9 years agodrivers/net/bnx2x: use ARRAY_SIZE macro in bnx2x_main.c
Nikitas Angelinas [Wed, 8 Sep 2010 11:20:37 +0000]
drivers/net/bnx2x: use ARRAY_SIZE macro in bnx2x_main.c

Replace sizeof(bnx2x_parity_mask)/(sizeof(bnx2x_parity_mask[0]) with
ARRAY_SIZE(bnx2x_parity_mask) in drivers/net/bnx2x/bnx2x_main.c

Signed-off-by: Nikitas Angelinas <nikitasangelinas@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoipheth: remove incorrect devtype to WWAN
Dan Williams [Wed, 8 Sep 2010 07:50:47 +0000]
ipheth: remove incorrect devtype to WWAN

The 'wwan' devtype is meant for devices that require preconfiguration
and *every* time setup before the ethernet interface can be used, like
cellular modems which require a series of setup commands on serial ports
or other mechanisms before the ethernet interface will handle packets.

As ipheth only requires one-per-hotplug pairing setup with no
preconfiguration (like APN, phone #, etc) and the network interface is
usable at any time after that initial setup, remove the incorrect
devtype wwan.

Signed-off-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoMAINTAINERS: Add CAIF
Joe Perches [Tue, 7 Sep 2010 20:33:24 +0000]
MAINTAINERS: Add CAIF

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoau1000-eth: change multi-line comments style
Florian Fainelli [Wed, 8 Sep 2010 11:11:59 +0000]
au1000-eth: change multi-line comments style

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoau1000-eth: remove volatiles, switch to I/O accessors
Florian Fainelli [Wed, 8 Sep 2010 11:15:13 +0000]
au1000-eth: remove volatiles, switch to I/O accessors

Remove all the volatile keywords where they were used, switch to using the
proper readl/writel accessors.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoau1000-eth: fix asm -> linux headers inclusion
Florian Fainelli [Wed, 8 Sep 2010 11:11:49 +0000]
au1000-eth: fix asm -> linux headers inclusion

Replace asm/io.h and asm/cpu.h wih linux/io.h and linux/cpu.h

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoau1000-eth: fix bad printk usages
Florian Fainelli [Wed, 8 Sep 2010 11:11:45 +0000]
au1000-eth: fix bad printk usages

Use pr_(info|err) and pr_cont where required instead of calls to printk.
Add missing pr_fmt to the driver.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoau1000-eth: fix all but one "line over 80 characters warnings"
Florian Fainelli [Wed, 8 Sep 2010 11:11:40 +0000]
au1000-eth: fix all but one "line over 80 characters warnings"

One line has not been changed because it would not improve readability.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoau1000-eth: stylistic fixes
Florian Fainelli [Wed, 8 Sep 2010 11:11:31 +0000]
au1000-eth: stylistic fixes

This patch fixes the following checkpatch.pl warnings:
- spaces after tabs
- space between function and arguments
- one-line statement braces
- tabs instead of spaces

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoau1000-eth: typedefs removal
Florian Fainelli [Wed, 8 Sep 2010 11:11:25 +0000]
au1000-eth: typedefs removal

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agotipc: Optimize handling excess content on incoming messages
Paul Gortmaker [Wed, 8 Sep 2010 13:31:24 +0000]
tipc: Optimize handling excess content on incoming messages

Remove code that trimmed excess trailing info from incoming messages
arriving over an Ethernet interface.  TIPC now ignores the extra info
while the message is being processed by the node, and only trims it off
if the message is retransmitted to another node.  (This latter step is
done to ensure the extra info doesn't cause the sk_buff to exceed the
outgoing interface's MTU limit.) The outgoing buffer is guaranteed to
be linear.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoixgbevf: remove private net_device_stats
Eric Dumazet [Wed, 8 Sep 2010 22:48:31 +0000]
ixgbevf: remove private net_device_stats

Use the net_device provided net_device_stats structure.

Remove ixgbevf_get_stats() now its not needed.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agotunnels: missing rcu_assign_pointer()
Eric Dumazet [Thu, 9 Sep 2010 05:33:43 +0000]
tunnels: missing rcu_assign_pointer()

xfrm4_tunnel_register() & xfrm6_tunnel_register() should
use rcu_assign_pointer() to make sure previous writes
(to handler->next) are committed to memory before chain
insertion.

deregister functions dont need a particular barrier.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agonet/core: add lock context change annotations in net/core/sock.c
Namhyung Kim [Wed, 8 Sep 2010 03:48:48 +0000]
net/core: add lock context change annotations in net/core/sock.c

__lock_sock() and __release_sock() releases and regrabs lock but
were missing proper annotations. Add it. This removes following
warning from sparse. (Currently __lock_sock() does not emit any
warning about it but I think it is better to add also.)

 net/core/sock.c:1580:17: warning: context imbalance in '__release_sock' - unexpected unlock

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agonet/core: remove address space warnings on verify_iovec()
Namhyung Kim [Wed, 8 Sep 2010 03:48:47 +0000]
net/core: remove address space warnings on verify_iovec()

move_addr_to_kernel() and copy_from_user() requires their argument
as __user pointer but were missing proper markups. Add it.
This removes following warnings from sparse.

 net/core/iovec.c:44:52: warning: incorrect type in argument 1 (different address spaces)
 net/core/iovec.c:44:52:    expected void [noderef] <asn:1>*uaddr
 net/core/iovec.c:44:52:    got void *msg_name
 net/core/iovec.c:55:34: warning: incorrect type in argument 2 (different address spaces)
 net/core/iovec.c:55:34:    expected void const [noderef] <asn:1>*from
 net/core/iovec.c:55:34:    got struct iovec *msg_iov

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosctp: fix test for end of loop
Joe Perches [Wed, 8 Sep 2010 11:04:21 +0000]
sctp: fix test for end of loop

Add a list_has_sctp_addr function to simplify loop

Based on a patches by Dan Carpenter and David Miller

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoMerge branch 'for-davem' of git://oss.oracle.com/git/agrover/linux-2.6
David S. Miller [Thu, 9 Sep 2010 21:58:11 +0000]
Merge branch 'for-davem' of git://oss.oracle.com/git/agrover/linux-2.6

9 years agoMerge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
David S. Miller [Thu, 9 Sep 2010 06:49:04 +0000]
Merge branch 'master' of /linux/kernel/git/torvalds/linux-2.6

9 years agoKS8851: Correct RX packet allocation
Eric Dumazet [Wed, 8 Sep 2010 13:26:55 +0000]
KS8851: Correct RX packet allocation

Use netdev_alloc_skb_ip_align() helper and do correct allocation

Tested-by: Abraham Arce <x0066660@ti.com>
Signed-off-by: Abraham Arce <x0066660@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoudp: add rehash on connect()
Eric Dumazet [Wed, 8 Sep 2010 05:08:44 +0000]
udp: add rehash on connect()

commit 30fff923 introduced in linux-2.6.33 (udp: bind() optimisation)
added a secondary hash on UDP, hashed on (local addr, local port).

Problem is that following sequence :

fd = socket(...)
connect(fd, &remote, ...)

not only selects remote end point (address and port), but also sets
local address, while UDP stack stored in secondary hash table the socket
while its local address was INADDR_ANY (or ipv6 equivalent)

Sequence is :
 - autobind() : choose a random local port, insert socket in hash tables
              [while local address is INADDR_ANY]
 - connect() : set remote address and port, change local address to IP
              given by a route lookup.

When an incoming UDP frame comes, if more than 10 sockets are found in
primary hash table, we switch to secondary table, and fail to find
socket because its local address changed.

One solution to this problem is to rehash datagram socket if needed.

We add a new rehash(struct socket *) method in "struct proto", and
implement this method for UDP v4 & v6, using a common helper.

This rehashing only takes care of secondary hash table, since primary
hash (based on local port only) is not changed.

Reported-by: Krzysztof Piotr Oledzki <ole@ans.pl>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Tested-by: Krzysztof Piotr Oledzki <ole@ans.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoatlx: make strings const
Stephen Hemminger [Thu, 9 Sep 2010 04:32:12 +0000]
atlx: make strings const

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Chris Snook <chris.snook@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agonet: inet_add_protocol() can use cmpxchg()
Eric Dumazet [Thu, 9 Sep 2010 04:31:35 +0000]
net: inet_add_protocol() can use cmpxchg()

Use cmpxchg() to get rid of spinlocks in inet_add_protocol() and
friends.

inet_protos[] & inet6_protos[] are moved to read_mostly section

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agocxacru: ignore cx82310_eth devices
Ondrej Zary [Thu, 9 Sep 2010 04:29:20 +0000]
cxacru: ignore cx82310_eth devices

Ignore ADSL routers, which can have the same vendor and product IDs
as ADSL modems but should be handled by the cx82310_eth driver.

This intentionally ignores device IDs that aren't currently handled
by cx82310_eth. There may be other device IDs that perhaps shouldn't
be claimed by cxacru.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoRDS: Remove dead struct from rds.h
Andy Grover [Thu, 9 Sep 2010 01:03:54 +0000]
RDS: Remove dead struct from rds.h

flows are an obsolete date type.

Signed-off-by: Andy Grover <andy.grover@oracle.com>

9 years agoRDS: rds.h: Replace u_int[size]_t with uint[size]_t
Andy Grover [Wed, 25 Aug 2010 16:34:10 +0000]
RDS: rds.h: Replace u_int[size]_t with uint[size]_t

Replace e.g. u_int32_t types with the more common uint32_t.

Reported-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Andy Grover <andy.grover@oracle.com>

9 years agoRDS: Add rds.h to exported headers list
Andy Grover [Wed, 25 Aug 2010 16:32:17 +0000]
RDS: Add rds.h to exported headers list

Also, a number of changes were made based on the assumption that
rds.h wasn't exported, so roll these back.

Signed-off-by: Andy Grover <andy.grover@oracle.com>

9 years agoRDS: Implement masked atomic operations
Andy Grover [Wed, 25 Aug 2010 12:51:28 +0000]
RDS: Implement masked atomic operations

Add two CMSGs for masked versions of cswp and fadd. args
struct modified to use a union for different atomic op type's
arguments. Change IB to do masked atomic ops. Atomic op type
in rds_message similarly unionized.

Signed-off-by: Andy Grover <andy.grover@oracle.com>

9 years agoRDS/IB: print string constants in more places
Zach Brown [Tue, 3 Aug 2010 20:52:47 +0000]
RDS/IB: print string constants in more places

This prints the constant identifier for work completion status and rdma
cm event types, like we already do for IB event types.

A core string array helper is added that each string type uses.

Signed-off-by: Zach Brown <zach.brown@oracle.com>

9 years agoRDS: cancel connection work structs as we shut down
Zach Brown [Fri, 23 Jul 2010 17:37:33 +0000]
RDS: cancel connection work structs as we shut down

Nothing was canceling the send and receive work that might have been
queued as a conn was being destroyed.

Signed-off-by: Zach Brown <zach.brown@oracle.com>

9 years agoRDS: don't call rds_conn_shutdown() from rds_conn_destroy()
Zach Brown [Fri, 23 Jul 2010 17:36:58 +0000]
RDS: don't call rds_conn_shutdown() from rds_conn_destroy()

rds_conn_shutdown() can return before the connection is shut down when
it encounters an existing state that it doesn't understand.  This lets
rds_conn_destroy() then start tearing down the conn from under paths
that are still using it.

It's more reliable the shutdown work and wait for krdsd to complete the
shutdown callback.  This stopped some hangs I was seeing where krdsd was
trying to shut down a freed conn.

Signed-off-by: Zach Brown <zach.brown@oracle.com>

9 years agoRDS: have sockets get transport module references
Zach Brown [Fri, 23 Jul 2010 17:32:31 +0000]
RDS: have sockets get transport module references

Right now there's nothing to stop the various paths that use
rs->rs_transport from racing with rmmod and executing freed transport
code.  The simple fix is to have binding to a transport also hold a
reference to the transport's module, removing this class of races.

We already had an unused t_owner field which was set for the modular
transports and which wasn't set for the built-in loop transport.

Signed-off-by: Zach Brown <zach.brown@oracle.com>

9 years agoRDS: remove old rs_transport comment
Zach Brown [Wed, 21 Jul 2010 22:13:25 +0000]
RDS: remove old rs_transport comment

rs_transport is now also used by the rdma paths once the socket is
bound.  We don't need this stale comment to tell us what cscope can.

Signed-off-by: Zach Brown <zach.brown@oracle.com>

9 years agoRDS: lock rds_conn_count decrement in rds_conn_destroy()
Zach Brown [Fri, 23 Jul 2010 17:30:45 +0000]
RDS: lock rds_conn_count decrement in rds_conn_destroy()

rds_conn_destroy() can race with all other modifications of the
rds_conn_count but it was modifying the count without locking.

Signed-off-by: Zach Brown <zach.brown@oracle.com>

9 years agoRDS/IB: protect the list of IB devices
Zach Brown [Thu, 15 Jul 2010 19:34:33 +0000]
RDS/IB: protect the list of IB devices

The RDS IB device list wasn't protected by any locking.  Traversal in
both the get_mr and FMR flushing paths could race with additon and
removal.

List manipulation is done with RCU primatives and is protected by the
write side of a rwsem.  The list traversal in the get_mr fast path is
protected by a rcu read critical section.  The FMR list traversal is
more problematic because it can block while traversing the list.  We
protect this with the read side of the rwsem.

Signed-off-by: Zach Brown <zach.brown@oracle.com>

9 years agoRDS/IB: print IB event strings as well as their number
Zach Brown [Wed, 14 Jul 2010 21:01:21 +0000]
RDS/IB: print IB event strings as well as their number

It's nice to not have to go digging in the code to see which event
occurred.  It's easy to throw together a quick array that maps the ib
event enums to their strings.  I didn't see anything in the stack that
does this translation for us, but I also didn't look very hard.

Signed-off-by: Zach Brown <zach.brown@oracle.com>

9 years agoRDS: flush fmrs before allocating new ones
Chris Mason [Tue, 20 Jul 2010 00:06:46 +0000]
RDS: flush fmrs before allocating new ones

Flushing FMRs is somewhat expensive, and is currently kicked off when
the interrupt handler notices that we are getting low.  The result of
this is that FMR flushing only happens from the interrupt cpus.

This spreads the load more effectively by triggering flushes just before
we allocate a new FMR.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

9 years agoRDS: properly use sg_init_table
Chris Mason [Tue, 20 Jul 2010 00:02:41 +0000]
RDS: properly use sg_init_table

This is only needed to keep debugging code from bugging.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

9 years agoRDS/IB: track signaled sends
Zach Brown [Wed, 14 Jul 2010 20:55:35 +0000]
RDS/IB: track signaled sends

We're seeing bugs today where IB connection shutdown clears the send
ring while the tasklet is processing completed sends.  Implementation
details cause this to dereference a null pointer.  Shutdown needs to
wait for send completion to stop before tearing down the connection.  We
can't simply wait for the ring to empty because it may contain
unsignaled sends that will never be processed.

This patch tracks the number of signaled sends that we've posted and
waits for them to complete.  It also makes sure that the tasklet has
finished executing.

Signed-off-by: Zach Brown <zach.brown@oracle.com>

9 years agoRDS: remove __init and __exit annotation
Zach Brown [Fri, 9 Jul 2010 19:26:20 +0000]
RDS: remove __init and __exit annotation

The trivial amount of memory saved isn't worth the cost of dealing with section
mismatches.

Signed-off-by: Zach Brown <zach.brown@oracle.com>