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Krzysztof Hałasa [Sun, 21 Dec 2008 23:26:38 +0000 (00:26 +0100)]
IXP4xx: move common debugging from network drivers to QMGR module.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Krzysztof Hałasa [Sun, 21 Dec 2008 22:52:36 +0000 (23:52 +0100)]
Update MAINTAINERS entries for IXP4xx and WAN network drivers.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Krzysztof Hałasa [Sun, 21 Dec 2008 22:52:18 +0000 (23:52 +0100)]
WAN: Add IXP4xx HSS HDLC driver.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Krzysztof Hałasa [Sat, 20 Dec 2008 23:02:34 +0000 (00:02 +0100)]
IXP4xx: Add ethtool support to Ethernet driver.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Krzysztof Hałasa [Sat, 20 Dec 2008 17:57:23 +0000 (18:57 +0100)]
IXP4xx: Add PHYLIB MII ioctl to the Ethernet driver.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Krzysztof Hałasa [Sat, 20 Dec 2008 00:53:08 +0000 (01:53 +0100)]
IXP4xx: Add PHYLIB support to Ethernet driver.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Krzysztof Hałasa [Sat, 20 Dec 2008 00:58:59 +0000 (01:58 +0100)]
IXP4xx: Make the Ethernet driver use built-in netdev stats.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Krzysztof Hałasa [Wed, 26 Nov 2008 21:59:18 +0000 (22:59 +0100)]
IXP4xx: Silence section mismatch warning in Ethernet driver.
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Krzysztof Hałasa [Fri, 9 May 2008 00:14:09 +0000 (02:14 +0200)]
IXP4xx: clear IRQ stat in qmgr_disable_irq().
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Krzysztof Hałasa [Thu, 8 May 2008 21:18:31 +0000 (23:18 +0200)]
IXP4xx: check for queue being empty in qmgr_release_queue().
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
Anton Vorontsov [Thu, 18 Dec 2008 08:23:35 +0000 (08:23 +0000)]
ucc_geth: Remove UGETH_FILTERING dead code
The code appears to be dead: nobody call these functions, plus build
breaks when UGETH_FILTERING is enabled:
ucc_geth.c:1848: warning: 'struct enet_addr' declared inside parameter list
ucc_geth.c:1848: warning: its scope is only this definition or declaration, which is probably not what you want
ucc_geth.c: In function 'ugeth_82xx_filtering_get_match_addr_in_hash':
ucc_geth.c:1856: error: dereferencing pointer to incomplete type
ucc_geth.c:1874: error: dereferencing pointer to incomplete type
ucc_geth.c:1877: warning: return from incompatible pointer type
ucc_geth.c: At top level:
ucc_geth.c:1885: warning: 'struct enet_addr' declared inside parameter list
ucc_geth.c: In function 'ugeth_82xx_filtering_add_addr_in_hash':
ucc_geth.c:1894: error: dereferencing pointer to incomplete type
ucc_geth.c:1909: warning: passing argument 2 of 'ugeth_82xx_filtering_get_match_addr_in_hash' from incompatible pointer type
ucc_geth.c:1909: warning: assignment from incompatible pointer type
ucc_geth.c:1918: error: dereferencing pointer to incomplete type
ucc_geth.c: At top level:
ucc_geth.c:1928: warning: 'struct enet_addr' declared inside parameter list
ucc_geth.c: In function 'ugeth_82xx_filtering_clear_addr_in_hash':
ucc_geth.c:1947: warning: passing argument 2 of 'ugeth_82xx_filtering_get_match_addr_in_hash' from incompatible pointer type
ucc_geth.c:1947: warning: assignment from incompatible pointer type
ucc_geth.c:1954: error: dereferencing pointer to incomplete type
ucc_geth.c: At top level:
ucc_geth.c:2060: warning: 'struct enet_addr' declared inside parameter list
ucc_geth.c: In function 'ugeth_82xx_filtering_add_addr_in_paddr':
ucc_geth.c:2064: error: dereferencing pointer to incomplete type
ucc_geth.c:2073: error: dereferencing pointer to incomplete type
ucc_geth.c:2075: warning: passing argument 2 of 'hw_add_addr_in_paddr' from incompatible pointer type
make[2]: *** [ucc_geth.o] Error 1
The code is there since the driver was merged, and nobody seem to be
interested in fixing or actually using it. If we ever want the
filtering support, we can always revert the patch and fix it, but so
far it just draws reader's attention.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Anton Vorontsov [Thu, 18 Dec 2008 08:23:33 +0000 (08:23 +0000)]
ucc_geth: Fix IO memory (un)mapping code
The driver doesn't check ioremap() return value, and doesn't free the
remapped memory.
This patch fixes it.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Anton Vorontsov [Thu, 18 Dec 2008 08:23:31 +0000 (08:23 +0000)]
ucc_geth: Cleanup repetitive ucc_geth_memclean() calls
No need to call ucc_geth_memclean() so many times, just check for
errors in ucc_geth_open(), and call ucc_geth_stop() in case of errors.
The ucc_geth_stop() may be called anytime and will do the right thing.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Anton Vorontsov [Thu, 18 Dec 2008 08:23:29 +0000 (08:23 +0000)]
ucc_geth: Fix IRQ freeing code in ucc_geth_open()
open() routine calls stop() in case of errors, the function will try
to free the requested IRQ. But we don't know if it was actually
requested, so the code might issue bogus free_irq(0, dev) call.
Fix this by rearranging the code so that now request_irq() is the last
call in the open() routine, and move free_irq() into the close().
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Anton Vorontsov [Thu, 18 Dec 2008 08:23:26 +0000 (08:23 +0000)]
ucc_geth: Fix TX watchdog timeout handling
The timeout handling code is currently broken in several ways:
- It calls stop() (which frees all the memory and IRQ), and then
calls startup() (which won't re-request IRQ, neither it will
re-init the Fast UCC structure).
- It calls these routines from the softirq context, which is wrong,
since stop() calls free_irq() (which might sleep) and startup()
allocates things with GFP_KERNEL.
- It won't soft-reset the PHY. We need the PHY reset for at least
MPC8360E-MDS boards with Marvell
88E1111 PHY, the PHY won't recover
from timeouts w/o the reset.
So the patch fixes these problems by implementing the workqueue for the
timeout handling, and there we fully re-open the device via close() and
open() calls. The close/open paths do the right things, and I can see
that the driver actually survive the timeouts.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Anton Vorontsov [Thu, 18 Dec 2008 08:23:22 +0000 (08:23 +0000)]
ucc_geth: Fix endless loop in stop_{tx,rx} routines
Currently the routines wait for the various bits w/o an assumption that
bits may never get set. When timeouts happen I see that these bits never
get set and so the routines hang the kernel.
With this patch we'll wait the graceful stop for 100 ms, and then will
simply exit. There is nothing* we can do about that, but it's OK since
we'll do full reset later.
* Well, actually, there is also not-graceful variant for the TX stop,
but specs says that we never should use it.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Mackall [Fri, 19 Dec 2008 03:54:22 +0000 (19:54 -0800)]
tcp: Stop scaring users with "treason uncloaked!"
The original message was unhelpful and extremely alarming to our poor
users, despite its charm. Make it less frightening.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jesper Dangaard Brouer [Fri, 19 Dec 2008 03:51:56 +0000 (19:51 -0800)]
NIU: Implement discard counters, optimize
Optimize the lightly loaded case, by only synchronizing discards stats
when qlen > 10 indicate potential for drops.
Notice Robert Olsson might disagree with this patch.
Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jesper Dangaard Brouer [Fri, 19 Dec 2008 03:51:26 +0000 (19:51 -0800)]
NIU: Implement discard counters, info/debug statements.
Discard packet counter debug statements that can be turned on
at runtime by users to assist debugging of the driver code.
Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jesper Dangaard Brouer [Fri, 19 Dec 2008 03:50:49 +0000 (19:50 -0800)]
NIU: Implement discard counters
Implementing discard counters for the NIU driver turned out to be more
complicated than first assumed.
The discard counters for the NIU neptune chip are only 16-bit (even
though this is a 64-bit chip). These 16-bit counters can overflow
quickly, especially considering this is a 10Gbit/s ethernet card.
The overflow indication bit is, unfortunatly, not usable as the
counter value does not wrap, but remains at max value 0xFFFF.
Resulting in lost counts until the counter is reset.
The read and reset scheme also poses a problem. Both in theory and in
practice counters can be lost in between reading nr64() and clearing
the counter nw64(). For this reason, the number of counter clearings
nw64() is limited/reduced. On the fast-path the counters are only
syncronized once it exceeds 0x7FFF. When read by userspace, its
syncronized fully.
Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Baruch Siach [Fri, 19 Dec 2008 03:39:14 +0000 (19:39 -0800)]
enc28j60: reduce the number of spi transfers in enc28j60_set_bank()
A major source of overhead in the enc28j60 driver is the SPI transfers. Each
SPI transfer entails two kernel thread context switches. One major source of
SPI transfers is the enc28j60_set_bank() functions which runs before every
register access. This patch reduces the number of SPI transfers that
enc28j60_set_bank() performs in two ways:
1. removes unnecessary bank switch for the registers that are present in all
banks
2. when switching from banks 0 or 3 to banks 1 or 2 (i.e. only one bit
changes) enc28j60_set_bank() does only one SPI transfer instead of two
According to my tests these changes reduce the number of SPI transfers in
about 25%.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wang Chen [Fri, 19 Dec 2008 03:36:46 +0000 (19:36 -0800)]
netdevice zd1201: Use after free
| commit
3d29b0c33d431ecc69ec778f8c236d382f59a85f
| Author: John W. Linville <linville@tuxdriver.com>
| Date: Fri Oct 31 14:13:12 2008 -0400
|
| netdevice zd1201: Convert directly reference of netdev->priv to netdev_priv()
|
| We have some reasons to kill netdev->priv:
| 1. netdev->priv is equal to netdev_priv().
| 2. netdev_priv() wraps the calculation of netdev->priv's offset, obviously
| netdev_priv() is more flexible than netdev->priv.
| But we cann't kill netdev->priv, because so many drivers reference to it
| directly.
|
| OK, becasue Dave S. Miller said, "every direct netdev->priv usage is a bug",
| and I want to kill netdev->priv later, I decided to convert all the direct
| reference of netdev->priv first.
|
| (Original patch posted by Wang Chen <wangchen@cn.fujitsu.com> w/ above
| changelog but using dev->ml_priv. That doesn't seem appropriate
| to me for this driver, so I've revamped it to use netdev_priv()
| instead. -- JWL)
This commit changed the allocation of netdev, but didn't change
the free method of it.
This causes "zd" be used after the memory, which is pointed by "zd", being
freed by free_netdev().
Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 19 Dec 2008 03:23:56 +0000 (19:23 -0800)]
Revert "xfrm: Accept ESP packets regardless of UDP encapsulation mode"
This reverts commit
e061b165c7f4ec5e2e160d990b49011b5b6e5c6a.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 18 Dec 2008 06:11:38 +0000 (22:11 -0800)]
Revert "net: release skb->dst in sock_queue_rcv_skb()"
This reverts commit
70355602879229c6f8bd694ec9c0814222bc4936.
As pointed out by Mark McLoughlin IP_PKTINFO cmsg data is one
post-queueing user, so this optimization is not valid right
now.
Signed-off-by: David S. Miller <davem@davemloft.net>
Holger Eitzenberger [Thu, 18 Dec 2008 03:13:53 +0000 (19:13 -0800)]
bonding: use port_params in __update_lacpdu_from_port
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Holger Eitzenberger [Thu, 18 Dec 2008 03:13:27 +0000 (19:13 -0800)]
bonding: use port_params in __update_default_selected()
I also removed some of the unneeded braces in the if condition to
improve readability and a little bit of reformatting.
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Holger Eitzenberger [Thu, 18 Dec 2008 03:13:07 +0000 (19:13 -0800)]
bonding: use port_params in __update_selected()
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Holger Eitzenberger [Thu, 18 Dec 2008 03:12:40 +0000 (19:12 -0800)]
bonding: remove various function declarations
They are all defined before used, it's therefore ok to remove
them.
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Holger Eitzenberger [Thu, 18 Dec 2008 03:12:07 +0000 (19:12 -0800)]
bonding: init port_params from template
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Holger Eitzenberger [Thu, 18 Dec 2008 03:08:46 +0000 (19:08 -0800)]
bonding: use plain memcpy in __record_default()
Also remove the pointless comment at the top.
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Holger Eitzenberger [Thu, 18 Dec 2008 03:08:14 +0000 (19:08 -0800)]
bonding: use port_params in __record_pdu()
It helps in maintaining the various partner information values from
the LACPDU. It also removes the pointless comment at the top.
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Holger Eitzenberger [Thu, 18 Dec 2008 03:07:38 +0000 (19:07 -0800)]
bonding: introduce and use port_params structure
It generally helps to handle those values in various places, using it
might make the code more readable and gives room for other improvements.
The IEEE standard talks about them as "parameter values".
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Holger Eitzenberger [Thu, 18 Dec 2008 03:07:16 +0000 (19:07 -0800)]
bonding: improve elaborate port_state assignment
The previous code was just a funny way of assigning both values (they
are both of type u8).
Signed-off-by: Holger Eitzenberger <holger@eitzenberger.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Fleming [Thu, 18 Dec 2008 00:52:30 +0000 (16:52 -0800)]
gianfar: Continue polling until both tx and rx are empty
gfar_poll would declare polling done once the rx queue was empty,
but the tx queue could still have packets left.
Stolen mostly from the e1000 driver.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dai Haruki [Thu, 18 Dec 2008 00:52:00 +0000 (16:52 -0800)]
gianfar: Merge Tx and Rx interrupt for scheduling clean up ring
No clean up function is executed in the interrupt context by this patch.
Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dai Haruki [Thu, 18 Dec 2008 00:51:32 +0000 (16:51 -0800)]
gianfar: Use interface name in interrupt name to distinguish the source.
Interface name (ex. eth0) is used as the prefix for the interrupt name,
with _rx, _tx, and _er appended to distinguish multiple interrupts on
the same interface.
Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dai Haruki [Thu, 18 Dec 2008 00:51:04 +0000 (16:51 -0800)]
gianfar: Add Scatter Gather support
Scatter Gather support in gianfar driver to handle fragmented frames on
the transmit side.
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Fleming [Thu, 18 Dec 2008 00:50:22 +0000 (16:50 -0800)]
gianfar: Fix packet drop when out of memory
The patch which fixed gianfar so it drops packets when it runs out
of memory left in the code which frees the skb when it drops packets.
Change the code so that we only free the skb if the new skb was successfully
created.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Arnaldo Carvalho de Melo [Thu, 18 Dec 2008 00:08:01 +0000 (16:08 -0800)]
dccp_diag: LISTEN sockets don't have CCIDs
And thus when we try to use 'ss -danemi' on these sockets that have no
ccid blocks (data collected using systemtap after I fixed the problem):
dccp_diag_get_info sk=0xffff8801220a3100, dp->dccps_hc_rx_ccid=0x0000000000000000, dp->dccps_hc_tx_ccid=0x0000000000000000
We get an OOPS:
mica.ghostprotocols.net login: BUG: unable to handle kernel NULL pointer
dereferenc0
IP: [<
ffffffffa0136082>] dccp_diag_get_info+0x82/0xc0 [dccp_diag]
PGD
12106f067 PUD
122488067 PMD 0
Oops: 0000 [#1] PREEMPT
Fix is trivial, and 'ss -d' is working again:
[root@mica ~]# ss -danemi
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 0 *:5001 *:*
ino:7288 sk:
220a3100ffff8801
mem:(r0,w0,f0,t0) cwnd:0 ssthresh:0
[root@mica ~]#
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rémi Denis-Courmont [Wed, 17 Dec 2008 23:49:09 +0000 (15:49 -0800)]
Phonet: USB CDC Phonet function for gadget framework
This implements the Nokia vendor-specific communication device class
function to exchange Phonet messages over USB. This function is already
found in the "PC suite" USB profile of (non-Linux) Nokia handsets.
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rémi Denis-Courmont [Wed, 17 Dec 2008 23:48:50 +0000 (15:48 -0800)]
Phonet: get rid of deferred work on the transmission path
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rémi Denis-Courmont [Wed, 17 Dec 2008 23:48:31 +0000 (15:48 -0800)]
Phonet: use atomic for packet TX window
GPRS TX flow control won't need to lock the underlying socket anymore.
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rémi Denis-Courmont [Wed, 17 Dec 2008 23:47:48 +0000 (15:47 -0800)]
Phonet: allocate separate ARP type for GPRS over a Phonet pipe
A separate xmit lock class supports GPRS over a Phonet pipe over a TUN
device (type ARPHRD_NONE).
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rémi Denis-Courmont [Wed, 17 Dec 2008 23:47:29 +0000 (15:47 -0800)]
Phonet: allocate a non-Ethernet ARP type
Also leave some room for more 802.11 types.
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Oliver Hartkopp [Wed, 17 Dec 2008 23:37:55 +0000 (15:37 -0800)]
vcan: whitespace fixes
Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cyrill Gorcunov [Wed, 17 Dec 2008 08:34:06 +0000 (00:34 -0800)]
net: ppp_generic - use idr technique instead of cardmaps
Use idr technique instead of own implemented cardmaps.
It saves us a number of lines and gives an ability
to use library functions.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 17 Dec 2008 07:53:20 +0000 (23:53 -0800)]
bnx2x: Fix namespace collision with FLOW_CTRL_{TX,RX}
These are now defined in linux/mii.h and the bnx2x driver
defines different values which are shared with hardware
data structures.
So add a "BNX2X_" prefix to these macro names.
Based upon a report from Stephen Rothwell.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 17 Dec 2008 07:45:02 +0000 (23:45 -0800)]
bnx2: Don't redefine FLOW_CTRL_{RX,TX}.
They are provided generically by linux/mii.h now.
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Wed, 17 Dec 2008 04:28:13 +0000 (20:28 -0800)]
bnx2: Update version to 1.9.0.
And fix the 5716S pci_device_id entry to point to the proper string.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Wed, 17 Dec 2008 04:27:45 +0000 (20:27 -0800)]
bnx2: Rename MSI-X vectors.
Change MSI-X vector names to "ethx-%d".
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Julia Lawall [Tue, 16 Dec 2008 23:43:29 +0000 (15:43 -0800)]
drivers/net/hamradio: Move a dereference below a NULL test
In each case, if the NULL test is necessary, then the dereference should be
moved below the NULL test.
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@@
type T;
expression E;
identifier i,fld;
statement S;
@@
- T i = E->fld;
+ T i;
... when != E
when != i
if (E == NULL) S
+ i = E->fld;
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Fleming [Tue, 16 Dec 2008 23:39:48 +0000 (15:39 -0800)]
phylib: Remove unnecessary "reset" fixups in genphy_setup_forced
genphy_setup_forced hasn't actually reset the PHY for a long time,
but a comment to that effect remained in the code, so code continued
to act as if it *had* reset the PHY, and called the necessary fixup
functions to respond to a PHY reset. With no reset, those functions
are no longer needed, so we remove them.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dai Haruki [Tue, 16 Dec 2008 23:34:50 +0000 (15:34 -0800)]
gianfar: Make all BD status writes 32-bit
Whenever we want to update the status field in a BD, we usually want to
update the length field, too. By combining them into one 32-bit field, we
reduce the number of stores to memory shared with the controller, and we
eliminate the need for order-enforcement, as the length and "READY" bit are
now updated atomically at the same time.
Signed-off-by: Dai Haruki <Dai.Haruki@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Fleming [Tue, 16 Dec 2008 23:33:40 +0000 (15:33 -0800)]
gianfar: Add macros for stepping through BDs
This code is based strongly on code from Dai Haruki <Dai.Haruki@freescale.com>.
The gianfar Buffer Descriptors are arranged in a circular array, the end of
which is denoted by setting the "WRAP" bit in the descriptor. However, the
software knows the end of the ring because it knows how many descriptors are
there. Rather than check each descriptor for whether the WRAP bit is set,
use pointer math to determine where the next BD is. This is also useful for
when we want to look at BDs other than the very next one (for Scatter-Gather).
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dai Haruki [Tue, 16 Dec 2008 23:32:11 +0000 (15:32 -0800)]
gianfar: Remove unused gfar_add_fcb() function parameter
- Also, use cacheable_memzero instead of memset for performance reasons.
Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dai Haruki [Tue, 16 Dec 2008 23:31:15 +0000 (15:31 -0800)]
gianfar: Enable padding and Optimize the frame prepended bytes handling
The eTSEC can prepend up to 32 bytes to a received frame, usually for the
purpose of aligning the IP address to a word boundary, so this turns it on.
While we're in there, make the handling of the pre-frame bytes (padding and
Frame Control Block) cleaner.
Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dai Haruki [Tue, 16 Dec 2008 23:30:48 +0000 (15:30 -0800)]
gianfar: Fix VLAN HW feature related frame/buffer size calculation.
Optimize the VLAN checking logic as well.
Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dai Haruki [Tue, 16 Dec 2008 23:30:20 +0000 (15:30 -0800)]
gianfar: Fix eTSEC configuration procedure
Fix some bugs in the ethtool configuration functions:
* gfar_clean_rx_ring should not be called with interrupts disabled.
* Update last transmission time to avoid tx timeout.
* Delete redundant NETIF_F_IP_CSUM check in gfar_start_xmit
* Use netif_tx_lock_bh when reconfiguring the tx csum
Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dai Haruki [Tue, 16 Dec 2008 23:29:52 +0000 (15:29 -0800)]
gianfar: Optimize interrupt coalescing configuration
Store the interrupt coalescing values in the form in which they will be
written to the interrupt coalescing registers. This puts a little overhead
into the ethtool configuration, and takes it out of the interrupt handler
Signed-off-by: Dai Haruki <dai.haruki@freescale.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Fleming [Tue, 16 Dec 2008 23:29:15 +0000 (15:29 -0800)]
gianfar: Convert gianfar to an of_platform_driver
Does the same for the accompanying MDIO driver, and then modifies the TBI
configuration method. The old way used fields in einfo, which no longer
exists. The new way is to create an MDIO device-tree node for each instance
of gianfar, and create a tbi-handle property to associate ethernet controllers
with the TBI PHYs they are connected to.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Fleming [Tue, 16 Dec 2008 23:25:45 +0000 (15:25 -0800)]
gianfar: Use gfar_halt to stop DMA in gfar_probe
gfar_halt does everything we want to do there, including disabling
TX/RX. It also doesn't unnecessarily enable DMA if it's already
stopped.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sakari Ailus [Tue, 16 Dec 2008 23:24:05 +0000 (15:24 -0800)]
tlan: Remove broken support for big buffers
The big rx/tx buffer support is broken and unlikely to be very useful
as such. Remove it.
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 16 Dec 2008 23:23:54 +0000 (15:23 -0800)]
Merge branch 'master' of /linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/enc28j60.c
Sakari Ailus [Tue, 16 Dec 2008 23:22:41 +0000 (15:22 -0800)]
tlan: Fix pci memory unmapping
Fix pci unmapping problem introduced by commit id
8953f1282793882a5444924f7a273dc72a43d0a3 "tlan: Fix small (< 64 bytes)
datagram transmissions".
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yang Hongyang [Tue, 16 Dec 2008 10:08:29 +0000 (02:08 -0800)]
ipv6: fix the outgoing interface selection order in udpv6_sendmsg()
1.When no interface is specified in an IPV6_PKTINFO ancillary data
item, the interface specified in an IPV6_PKTINFO sticky optionis
is used.
RFC3542:
6.7. Summary of Outgoing Interface Selection
This document and [RFC-3493] specify various methods that affect the
selection of the packet's outgoing interface. This subsection
summarizes the ordering among those in order to ensure deterministic
behavior.
For a given outgoing packet on a given socket, the outgoing interface
is determined in the following order:
1. if an interface is specified in an IPV6_PKTINFO ancillary data
item, the interface is used.
2. otherwise, if an interface is specified in an IPV6_PKTINFO sticky
option, the interface is used.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yang Hongyang [Tue, 16 Dec 2008 10:07:45 +0000 (02:07 -0800)]
ipv6: fix the return interface index when get it while no message is received
When get receiving interface index while no message is received,
the the value seted with setsockopt() should be returned.
RFC 3542:
Issuing getsockopt() for the above options will return the sticky
option value i.e., the value set with setsockopt(). If no sticky
option value has been set getsockopt() will return the following
values:
- For the IPV6_PKTINFO option, it will return an in6_pktinfo
structure with ipi6_addr being in6addr_any and ipi6_ifindex being
zero.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yang Hongyang [Tue, 16 Dec 2008 10:06:23 +0000 (02:06 -0800)]
ipv6: Add IPV6_PKTINFO sticky option support to setsockopt()
There are three reasons for me to add this support:
1.When no interface is specified in an IPV6_PKTINFO ancillary data
item, the interface specified in an IPV6_PKTINFO sticky optionis
is used.
RFC3542:
6.7. Summary of Outgoing Interface Selection
This document and [RFC-3493] specify various methods that affect the
selection of the packet's outgoing interface. This subsection
summarizes the ordering among those in order to ensure deterministic
behavior.
For a given outgoing packet on a given socket, the outgoing interface
is determined in the following order:
1. if an interface is specified in an IPV6_PKTINFO ancillary data
item, the interface is used.
2. otherwise, if an interface is specified in an IPV6_PKTINFO sticky
option, the interface is used.
2.When no IPV6_PKTINFO ancillary data is received,getsockopt() should
return the sticky option value which set with setsockopt().
RFC 3542:
Issuing getsockopt() for the above options will return the sticky
option value i.e., the value set with setsockopt(). If no sticky
option value has been set getsockopt() will return the following
values:
3.Make the setsockopt implementation POSIX compliant.
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Steve Glendinning [Tue, 16 Dec 2008 10:00:48 +0000 (02:00 -0800)]
net: Refactor full duplex flow control resolution
These 4 drivers have identical full duplex flow control resolution
functions. This patch changes them all to use one common function.
The function in question decides whether a device should enable TX and
RX flow control in a standard way (IEEE 802.3-2005 table 28B-3), so this
should also be useful for other drivers.
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Steve Glendinning [Tue, 16 Dec 2008 10:00:00 +0000 (02:00 -0800)]
net: Move flow control definitions to mii.h
flags used within drivers for indicating tx and rx flow control are
defined in 4 drivers (and probably more), move these constants to mii.h.
The 3 SMSC drivers use the same constants (FLOW_CTRL_TX), but TG3 uses
TG3_FLOW_CTRL_TX, so this patch also renames the constants within TG3.
Signed-off-by: Steve Glendinning <steve.glendinning@smsc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexey Dobriyan [Tue, 16 Dec 2008 09:55:38 +0000 (01:55 -0800)]
simeth: convert to net_device_ops
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Divy Le Ray [Tue, 16 Dec 2008 09:51:47 +0000 (01:51 -0800)]
cxgb3: untie strict FW matching
The NIC driver can work with mutliple versions of the FW.
Let the driver load when the embedded FW does not match,
and the FW update mechanism failed.
The iWARP module will make its own loading decision.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Baruch Siach [Mon, 15 Dec 2008 20:18:52 +0000 (20:18 +0000)]
enc28j60: use netif_rx_ni() to deliver RX packets
The enc28j60 driver reads incoming packets in the process (workqueue) context,
not in a tasklet or the interrupt context. Thus, we should use netif_rx_ni()
to deliver those packets to the networking layer, instead of netif_rx(). This
way incoming packets don't wait in the incoming queue for the next IRQ to be
serviced.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sakari Ailus [Tue, 16 Dec 2008 09:44:05 +0000 (01:44 -0800)]
tlan: Fix small (< 64 bytes) datagram transmissions
The TLAN chip does not support tranmissions smaller than 64
bytes. Smaller transfers need to be padded up to that size. This was
broken by commit id
41873e9aff0632d80c74380d58a89e8d420151bd ("tlan:
get rid of padding buffer").
<URL:http://bugzilla.kernel.org/show_bug.cgi?id=11754>
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Oliver Hartkopp [Tue, 16 Dec 2008 09:42:50 +0000 (01:42 -0800)]
vcan: convert to net_device_ops
Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
James Chapman [Tue, 16 Dec 2008 09:23:49 +0000 (01:23 -0800)]
l2tp: fix UDP checksum support
The pppol2tp driver has had broken UDP checksum code for a long
time. This patch fixes it. If UDP checksums are enabled in the
tunnel's UDP socket, the L2TP driver now properly validates the
checksum on receive and fills in the checksum on transmit. If the
network device has hardware checksum support and is enabled, it is
used instead of generating/checking the checksum in software.
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pablo Neira Ayuso [Tue, 16 Dec 2008 09:19:41 +0000 (01:19 -0800)]
netfilter: ctnetlink: fix missing CTA_NAT_SEQ_UNSPEC
This patch fixes an inconsistency in nfnetlink_conntrack.h that
I introduced myself. The problem is that CTA_NAT_SEQ_UNSPEC is
missing from enum ctattr_natseq. This inconsistency may lead to
problems in the message parsing in userspace (if the message
contains the CTA_NAT_SEQ_* attributes, of course).
This patch breaks backward compatibility, however, the only known
client of this code is libnetfilter_conntrack which indeed crashes
because it assumes the existence of CTA_NAT_SEQ_UNSPEC to do
the parsing.
The CTA_NAT_SEQ_* attributes were introduced in 2.6.25.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rémi Denis-Courmont [Tue, 16 Dec 2008 09:18:31 +0000 (01:18 -0800)]
Phonet: improve GPRS variable names
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hannes Eder [Tue, 16 Dec 2008 09:17:33 +0000 (01:17 -0800)]
isdn: eicon: fix sparse warning: make global functions static
Fix this sparse warnings by making the functions static:
drivers/isdn/hardware/eicon/di.c:356:6: warning: symbol 'isdn_rc' was not declared. Should it be static?
drivers/isdn/hardware/eicon/di.c:558:6: warning: symbol 'isdn_ind' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:595:6: warning: symbol 'api_parse' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:634:6: warning: symbol 'api_save_msg' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:666:6: warning: symbol 'api_load_msg' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:3417:6: warning: symbol 'manufacturer_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:3745:6: warning: symbol 'manufacturer_res' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:4077:6: warning: symbol 'control_rc' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:4743:6: warning: symbol 'data_rc' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:4779:6: warning: symbol 'data_ack' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:4805:6: warning: symbol 'sig_ind' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:6173:6: warning: symbol 'SendInfo' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:6349:6: warning: symbol 'SendMultiIE' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:6468:6: warning: symbol 'nl_ind' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:7250:6: warning: symbol 'get_plci' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:7409:6: warning: symbol 'add_d' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:7427:6: warning: symbol 'add_ai' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:7448:6: warning: symbol 'add_b1' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:7912:6: warning: symbol 'add_b23' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:8709:6: warning: symbol 'nl_req_ncci' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:8731:6: warning: symbol 'send_req' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:8866:6: warning: symbol 'listen_check' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:8909:6: warning: symbol 'IndParse' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:8994:6: warning: symbol 'ie_compare' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:9003:6: warning: symbol 'find_cip' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:9071:6: warning: symbol 'SetVoiceChannel' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:9089:6: warning: symbol 'VoiceChannelOff' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:9102:6: warning: symbol 'AdvCodecSupport' was not declared. Should it be static?
drivers/isdn/hardware/eicon/message.c:9198:6: warning: symbol 'CodecIdCheck' was not declared. Should it be static?
Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ilpo Järvinen [Tue, 16 Dec 2008 09:15:11 +0000 (01:15 -0800)]
ipmr: merge common code
Also removes redundant skb->len < x check which can't
be true once pskb_may_pull(skb, x) succeeded.
$ diff-funcs pim_rcv ipmr.c ipmr.c pim_rcv_v1
--- ipmr.c:pim_rcv()
+++ ipmr.c:pim_rcv_v1()
@@ -1,22 +1,27 @@
-static int pim_rcv(struct sk_buff * skb)
+int pim_rcv_v1(struct sk_buff * skb)
{
- struct pimreghdr *pim;
+ struct igmphdr *pim;
struct iphdr *encap;
struct net_device *reg_dev = NULL;
if (!pskb_may_pull(skb, sizeof(*pim) + sizeof(*encap)))
goto drop;
- pim = (struct pimreghdr *)skb_transport_header(skb);
- if (pim->type != ((PIM_VERSION<<4)|(PIM_REGISTER)) ||
- (pim->flags&PIM_NULL_REGISTER) ||
- (ip_compute_csum((void *)pim, sizeof(*pim)) != 0 &&
- csum_fold(skb_checksum(skb, 0, skb->len, 0))))
+ pim = igmp_hdr(skb);
+
+ if (!mroute_do_pim ||
+ skb->len < sizeof(*pim) + sizeof(*encap) ||
+ pim->group != PIM_V1_VERSION || pim->code != PIM_V1_REGISTER)
goto drop;
- /* check if the inner packet is destined to mcast group */
encap = (struct iphdr *)(skb_transport_header(skb) +
- sizeof(struct pimreghdr));
+ sizeof(struct igmphdr));
+ /*
+ Check that:
+ a. packet is really destinted to a multicast group
+ b. packet is not a NULL-REGISTER
+ c. packet is not truncated
+ */
if (!ipv4_is_multicast(encap->daddr) ||
encap->tot_len == 0 ||
ntohs(encap->tot_len) + sizeof(*pim) > skb->len)
@@ -40,9 +45,9 @@
skb->ip_summed = 0;
skb->pkt_type = PACKET_HOST;
dst_release(skb->dst);
+ skb->dst = NULL;
reg_dev->stats.rx_bytes += skb->len;
reg_dev->stats.rx_packets++;
- skb->dst = NULL;
nf_reset(skb);
netif_rx(skb);
dev_put(reg_dev);
$ codiff net/ipv4/ipmr.o.old net/ipv4/ipmr.o.new
net/ipv4/ipmr.c:
pim_rcv_v1 | -283
pim_rcv | -284
2 functions changed, 567 bytes removed
net/ipv4/ipmr.c:
__pim_rcv | +307
1 function changed, 307 bytes added
net/ipv4/ipmr.o.new:
3 functions changed, 307 bytes added, 567 bytes removed, diff: -260
(Tested on x86_64).
It seems that pimlen arg could be left out as well and
eq-sizedness of structs trapped with BUILD_BUG_ON but
I don't think that's more than a cosmetic flaw since there
aren't that many args anyway.
Compile tested.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ilpo Järvinen [Tue, 16 Dec 2008 09:14:21 +0000 (01:14 -0800)]
hp100: use roundup instead of open coding
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Divy Le Ray [Tue, 16 Dec 2008 09:09:39 +0000 (01:09 -0800)]
cxgb3: Add multiple Tx queue support.
Implement NIC Tx multiqueue.
Bump up driver version.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Tue, 16 Dec 2008 07:46:15 +0000 (23:46 -0800)]
e1000e: Add GRO support
This patch adds GRO support to e1000e by making it invoke napi_gro_receive
instead of netif_receive_skb.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Tue, 16 Dec 2008 07:44:31 +0000 (23:44 -0800)]
ethtool: Add GGRO and SGRO ops
This patch adds the ethtool ops to enable and disable GRO. It also
makes GRO depend on RX checksum offload much the same as how TSO
depends on SG support.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Tue, 16 Dec 2008 07:43:36 +0000 (23:43 -0800)]
tcp: Add GRO support
This patch adds the TCP-specific portion of GRO. The criterion for
merging is extremely strict (the TCP header must match exactly apart
from the checksum) so as to allow refragmentation. Otherwise this
is pretty much identical to LRO, except that we support the merging
of ECN packets.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Tue, 16 Dec 2008 07:42:33 +0000 (23:42 -0800)]
net: Add skb_gro_receive
This patch adds the helper skb_gro_receive to merge packets for
GRO. The current method is to allocate a new header skb and then
chain the original packets to its frag_list. This is done to
make it easier to integrate into the existing GSO framework.
In future as GSO is moved into the drivers, we can undo this and
simply chain the original packets together.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Tue, 16 Dec 2008 07:41:09 +0000 (23:41 -0800)]
ipv4: Add GRO infrastructure
This patch adds GRO support for IPv4.
The criteria for merging is more stringent than LRO, in particular,
we require all fields in the IP header to be identical except for
the length, ID and checksum. In addition, the ID must form an
arithmetic sequence with a difference of one.
The ID requirement might seem overly strict, however, most hardware
TSO solutions already obey this rule. Linux itself also obeys this
whether GSO is in use or not.
In future we could relax this rule by storing the IDs (or rather
making sure that we don't drop them when pulling the aggregate
skb's tail).
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Tue, 16 Dec 2008 07:38:52 +0000 (23:38 -0800)]
net: Add Generic Receive Offload infrastructure
This patch adds the top-level GRO (Generic Receive Offload) infrastructure.
This is pretty similar to LRO except that this is protocol-independent.
Instead of holding packets in an lro_mgr structure, they're now held in
napi_struct.
For drivers that intend to use this, they can set the NETIF_F_GRO bit and
call napi_gro_receive instead of netif_receive_skb or just call netif_rx.
The latter will call napi_receive_skb automatically. When napi_gro_receive
is used, the driver must either call napi_complete/napi_rx_complete, or
call napi_gro_flush in softirq context if the driver uses the primitives
__napi_complete/__napi_rx_complete.
Protocols will set the gro_receive and gro_complete function pointers in
order to participate in this scheme.
In addition to the packet, gro_receive will get a list of currently held
packets. Each packet in the list has a same_flow field which is non-zero
if it is a potential match for the new packet. For each packet that may
match, they also have a flush field which is non-zero if the held packet
must not be merged with the new packet.
Once gro_receive has determined that the new skb matches a held packet,
the held packet may be processed immediately if the new skb cannot be
merged with it. In this case gro_receive should return the pointer to
the existing skb in gro_list. Otherwise the new skb should be merged into
the existing packet and NULL should be returned, unless the new skb makes
it impossible for any further merges to be made (e.g., FIN packet) where
the merged skb should be returned.
Whenever the skb is merged into an existing entry, the gro_receive
function should set NAPI_GRO_CB(skb)->same_flow. Note that if an skb
merely matches an existing entry but can't be merged with it, then
this shouldn't be set.
If gro_receive finds it pointless to hold the new skb for future merging,
it should set NAPI_GRO_CB(skb)->flush.
Held packets will be flushed by napi_gro_flush which is called by
napi_complete and napi_rx_complete.
Currently held packets are stored in a singly liked list just like LRO.
The list is limited to a maximum of 8 entries. In future, this may be
expanded to use a hash table to allow more flows to be held for merging.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Tue, 16 Dec 2008 07:27:47 +0000 (23:27 -0800)]
net: Add frag_list support to GSO
This patch allows GSO to handle frag_list in a limited way for the
purposes of allowing packets merged by GRO to be refragmented on
output.
Most hardware won't (and aren't expected to) support handling GRO
frag_list packets directly. Therefore we will perform GSO in
software for those cases.
However, for drivers that can support it (such as virtual NICs) we
may not have to segment the packets at all.
Whether the added overhead of GRO/GSO is worthwhile for bridges
and routers when weighed against the benefit of potentially
increasing the MTU within the host is still an open question.
However, for the case of host nodes this is undoubtedly a win.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Tue, 16 Dec 2008 07:26:06 +0000 (23:26 -0800)]
net: Add frag_list support to skb_segment
This patch adds limited support for handling frag_list packets in
skb_segment. The intention is to support GRO (Generic Receive Offload)
packets which will be constructed by chaining normal packets using
frag_list.
As such we require all frag_list members terminate on exact MSS
boundaries. This is checked using BUG_ON.
As there should only be one producer in the kernel of such packets,
namely GRO, this requirement should not be difficult to maintain.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 16 Dec 2008 04:03:50 +0000 (20:03 -0800)]
Merge branch 'master' of /linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/e1000e/ich8lan.c
Linus Torvalds [Tue, 16 Dec 2008 00:31:05 +0000 (16:31 -0800)]
Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 5348/1: fix documentation wrt location of the alignment trap interface
[ARM] Ensure linux/hardirqs.h is included where required
[ARM] fix kernel-doc syntax
[ARM] arch/arm/common/sa1111.c: Correct error handling code
[ARM] 5341/2: there is no copy_page on nommu ARM
Linus Torvalds [Tue, 16 Dec 2008 00:30:22 +0000 (16:30 -0800)]
Merge git://git./linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
Phonet: keep TX queue disabled when the device is off
SCHED: netem: Correct documentation comment in code.
netfilter: update rwlock initialization for nat_table
netlabel: Compiler warning and NULL pointer dereference fix
e1000e: fix double release of mutex
IA64: HP_SIMETH needs to depend upon NET
netpoll: fix race on poll_list resulting in garbage entry
ipv6: silence log messages for locally generated multicast
sungem: improve ethtool output with internal pcs and serdes
tcp: tcp_vegas cong avoid fix
sungem: Make PCS PHY support partially work again.
Rusty Russell [Mon, 15 Dec 2008 08:34:35 +0000 (19:04 +1030)]
Define smp_call_function_many for UP
Otherwise those using it in transition patches (eg. kvm) can't compile
with CONFIG_SMP=n:
arch/x86/kvm/../../../virt/kvm/kvm_main.c: In function 'make_all_cpus_request':
arch/x86/kvm/../../../virt/kvm/kvm_main.c:380: error: implicit declaration of function 'smp_call_function_many'
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Paul Menage [Mon, 15 Dec 2008 21:54:22 +0000 (13:54 -0800)]
cgroups: fix a race between rmdir and remount
When a cgroup is removed, it's unlinked from its parent's children list,
but not actually freed until the last dentry on it is released (at which
point cgrp->root->number_of_cgroups is decremented).
Currently rebind_subsystems checks for the top cgroup's child list being
empty in order to rebind subsystems into or out of a hierarchy - this can
result in the set of subsystems bound to a hierarchy being
removed-but-not-freed cgroup.
The simplest fix for this is to forbid remounts that change the set of
subsystems on a hierarchy that has removed-but-not-freed cgroups. This
bug can be reproduced via:
mkdir /mnt/cg
mount -t cgroup -o ns,freezer cgroup /mnt/cg
mkdir /mnt/cg/foo
sleep 1h < /mnt/cg/foo &
rmdir /mnt/cg/foo
mount -t cgroup -o remount,ns,devices,freezer cgroup /mnt/cg
kill $!
Though the above will cause oops in -mm only but not mainline, but the bug
can cause memory leak in mainline (and even oops)
Signed-off-by: Paul Menage <menage@google.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Frederik Deweerdt [Mon, 15 Dec 2008 21:54:19 +0000 (13:54 -0800)]
ACPI toshiba: only register rfkill if bt is enabled
Part of the rfkill initialization was done whenever BT was on or not. The
following patch checks for BT presence before registering the rfkill to
the input layer. Some minor cleanups (> 80 char lines) were also added in
the process.
On Tue, Oct 28, 2008 at 10:10:37PM +0300, Andrey Borzenkov wrote:
[...]
> [ 66.633036] toshiba_acpi: Toshiba Laptop ACPI Extras version 0.19
> [ 66.633054] toshiba_acpi: HCI method: \_SB_.VALD.GHCI
> [ 66.637764] input: Toshiba RFKill Switch as /devices/virtual/input/input3
[...]
> [ 113.920753] ------------[ cut here ]------------
> [ 113.920828] kernel BUG at /home/bor/src/linux-git/net/rfkill/rfkill.c:347!
> [ 113.920845] invalid opcode: 0000 [#1]
> [ 113.920877] last sysfs file: /sys/devices/pci0000:00/0000:00:04.0/host0/target0:0:0/0:0:0:0/block/sda/size
> [ 113.920900] Dumping ftrace buffer:
> [ 113.920919] (ftrace buffer empty)
> [ 113.920933] Modules linked in: af_packet irnet ppp_generic slhc ircomm_tty ircomm binfmt_misc loop dm_mirror dm_region_hash dm_log dm_round_robin dm_multipath dm_mod alim15x3 ide_core nvram toshiba cryptomgr aead crypto_blkcipher michael_mic crypto_algapi orinoco_cs orinoco hermes_dld hermes pcmcia firmware_class snd_ali5451 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device smsc_ircc2 snd_pcm_oss snd_pcm rtc_cmos irda snd_timer snd_mixer_oss rtc_core snd crc_ccitt yenta_socket rtc_lib rsrc_nonstatic i2c_ali1535 pcmcia_core pcspkr psmouse soundcore i2c_core evdev sr_mod snd_page_alloc alim1535_wdt cdrom fan sg video output toshiba_acpi rfkill thermal backlight ali_agp processor ac button input_polldev battery agpgart ohci_hcd usbcore reiserfs pata_ali libata sd_mod scsi_mod [last unloaded: scsi_wait_scan]
> [ 113.921765]
> [ 113.921785] Pid: 3272, comm: ipolldevd Not tainted (2.6.28-rc2-1avb #3) PORTEGE 4000
> [ 113.921801] EIP: 0060:[<
dfaa4683>] EFLAGS:
00010246 CPU: 0
> [ 113.921854] EIP is at rfkill_force_state+0x53/0x90 [rfkill]
> [ 113.921870] EAX:
00000000 EBX:
00000000 ECX:
00000003 EDX:
00000000
> [ 113.921885] ESI:
00000000 EDI:
ddd50300 EBP:
d8d7af40 ESP:
d8d7af24
> [ 113.921900] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
> [ 113.921918] Process ipolldevd (pid: 3272, ti=
d8d7a000 task=
d8d93c90 task.ti=
d8d7a000)
> [ 113.921933] Stack:
> [ 113.921945]
d8d7af38 00000246 dfb029d8 dfb029c0 dfb029d8 dfb029c0 ddd50300 d8d7af5c
> [ 113.922014]
dfb018e2 01000246 01000000 ddd50300 ddd50314 ddabb8a0 d8d7af68 dfb381c1
> [ 113.922098]
00000000 d8d7afa4 c012ec0a 00000000 00000002 00000000 c012eba8 ddabb8c0
> [ 113.922240] Call Trace:
> [ 113.922240] [<
dfb018e2>] ? bt_poll_rfkill+0x5c/0x82 [toshiba_acpi]
> [ 113.922240] [<
dfb381c1>] ? input_polled_device_work+0x11/0x40 [input_polldev]
> [ 113.922240] [<
c012ec0a>] ? run_workqueue+0xea/0x1f0
> [ 113.922240] [<
c012eba8>] ? run_workqueue+0x88/0x1f0
> [ 113.922240] [<
dfb381b0>] ? input_polled_device_work+0x0/0x40 [input_polldev]
> [ 113.922240] [<
c012f047>] ? worker_thread+0x87/0xf0
> [ 113.922240] [<
c0132b00>] ? autoremove_wake_function+0x0/0x50
> [ 113.922240] [<
c012efc0>] ? worker_thread+0x0/0xf0
> [ 113.922240] [<
c013280f>] ? kthread+0x3f/0x80
> [ 113.922240] [<
c01327d0>] ? kthread+0x0/0x80
> [ 113.922240] [<
c01040d7>] ? kernel_thread_helper+0x7/0x10
> [ 113.922240] Code: 43 54 89 73 54 39 c6 74 11 89 d9 ba 01 00 00 00 b8 40 68 aa df e8 3e 35 69 e0 89 f8 e8 77 fd 85 e0 31 c0 83 c4 10 5b 5e 5f 5d c3 <0f> 0b eb fe 89 f6 8d bc 27 00 00 00 00 be f4 4d aa df bb 5f 01
> [ 113.922240] EIP: [<
dfaa4683>] rfkill_force_state+0x53/0x90 [rfkill] SS:ESP 0068:
d8d7af24
> [ 113.924700] ---[ end trace
0e404eb40cadd5f0 ]---
Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com>
Tested-by: Andrey Borzenkov <arvidjaar@mail.ru>
Acked-by: Len Brown <len.brown@intel.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Michael Halcrow [Mon, 15 Dec 2008 21:54:17 +0000 (13:54 -0800)]
eCryptfs: Update maintainers
Tyler Hicks and Dustin Kirkland are now the primary contact points for
eCryptfs issues that may arise from this point forward.
Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Acked-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
Acked-by: Dustin Kirkland <kirkland@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Catalin Marinas [Mon, 15 Dec 2008 21:54:16 +0000 (13:54 -0800)]
slob: do not pass the SLAB flags as GFP in kmem_cache_create()
The kmem_cache_create() function in the slob allocator passes the SLAB
flags as GFP flags to the slob_alloc() function. The patch changes this
call to pass GFP_KERNEL as the other allocators seem to do.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Matt Mackall <mpm@selenic.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mike Frysinger [Mon, 15 Dec 2008 21:54:14 +0000 (13:54 -0800)]
pcmcia: blackfin: fix bug - add missing ; to MODULE macro
Cc: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David S. Miller [Mon, 15 Dec 2008 23:14:59 +0000 (15:14 -0800)]
8390/8390p: Fix compat netdev ops handling.
Based upon a report from Randy Dunlap.
The compat netdev ops assignments need to happen in
8390.c and 8390p.c, not lib8390.c, as only the type
specific code can assign the correct function pointers.
Signed-off-by: David S. Miller <davem@davemloft.net>
Nicolas Pitre [Mon, 15 Dec 2008 02:09:15 +0000 (03:09 +0100)]
[ARM] 5348/1: fix documentation wrt location of the alignment trap interface
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>