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path: root/drivers/net/caif/caif_hsi.c (follow)
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2016-07-25caif-hsi: Remove deprecated create_singlethread_workqueueBhaktipriya Shridhar1-4/+1
alloc_workqueue replaces deprecated create_singlethread_workqueue(). A dedicated workqueue has been used since the workitems are being used on a packet tx/rx path. Hence, WQ_MEM_RECLAIM has been set to guarantee forward progress under memory pressure. An ordered workqueue has been used since workitems &cfhsi->wake_up_work and &cfhsi->wake_down_work cannot be run concurrently. Calls to flush_workqueue() before destroy_workqueue() have been dropped since destroy_workqueue() itself calls drain_workqueue() which flushes repeatedly till the workqueue becomes empty. Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-08-18net: caif: convert to using IFF_NO_QUEUEPhil Sutter1-1/+1
Signed-off-by: Phil Sutter <phil@nwl.cc> Cc: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-01-29caif: remove wrong dev_net_set() callNicolas Dichtel1-1/+0
src_net points to the netns where the netlink message has been received. This netns may be different from the netns where the interface is created (because the user may add IFLA_NET_NS_[PID|FD]). In this case, src_net is the link netns. It seems wrong to override the netns in the newlink() handler because if it was not already src_net, it means that the user explicitly asks to create the netdevice in another netns. CC: Sjur Brændeland <sjur.brandeland@stericsson.com> CC: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no> Fixes: 8391c4aab1aa ("caif: Bugfixes in CAIF netdevice for close and flow control") Fixes: c41254006377 ("caif-hsi: Add rtnl support") Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-23caif: Update Dmitry's email address.sjur.brandeland@stericsson.com1-1/+1
Dmitry's address will start bouncing in a few days, update to his new mail address. Cc: Dmitry Tarnyagin <dmitry.tarnyagin@stericsson.com> Cc: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no> Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-23caif: Remove bouncing address for Daniel Martenssonsjur.brandeland@stericsson.com1-2/+2
cc: Daniel Martensson <Daniel.Martensson@stericsson.com> Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-04-23caif: Remove my bouncing email address.sjur.brandeland@stericsson.com1-1/+0
Remove my soon bouncing email address. Also remove the "Contact:" line in file header. The MAINTAINERS file is a better place to find the contact person anyway. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-29caif-hsi: Fix merge issues.Sjur Brændeland1-45/+27
Fix the failing merge in net-next by reverting the last net-next merge for caif_hsi.c and then merge in the commit: "caif-hsi: Bugfix - Piggyback'ed embedded CAIF frame lost" from the net repository. The commit:"caif-hsi: Add missing return in error path" from net repository was dropped, as it changed code previously removed in the net-next repository. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-28Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-29/+47
Conflicts: drivers/net/caif/caif_hsi.c drivers/net/usb/qmi_wwan.c The qmi_wwan merge was trivial. The caif_hsi.c, on the other hand, was not. It's a conflict between 1c385f1fdf6f9c66d982802cd74349c040980b50 ("caif-hsi: Replace platform device with ops structure.") in the net-next tree and commit 39abbaef19cd0a30be93794aa4773c779c3eb1f3 ("caif-hsi: Postpone init of HIS until open()") in the net tree. I did my best with that one and will ask Sjur to check it out. Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-25caif-hsi: Remove use of module parametersSjur Brændeland1-79/+72
Remove use of module parameters on caif hsi device, as rtnl configuration parameters are already supported. All caif hsi configuration data is put in cfhsi_config, and default values in hsi_default_config. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-25caif-hsi: Replace platform device with ops structure.Sjur Brændeland1-58/+51
Remove use of struct platform_device, and replace it with struct cfhsi_ops. Updated variable names in the same spirit: cfhsi_get_dev to cfhsi_get_ops, cfhsi->dev to cfhsi->ops and, cfhsi->dev.drv to cfhsi->ops->cb_ops. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-25caif-hsi: Add rtnl supportSjur Brændeland1-89/+137
Add RTNL support for managing the caif hsi interface. The HSI HW interface is no longer registering as a device, instead we use symbol_get to get hold of the HSI API. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-25caif-hsi: Remove uncecessary assignmentsSjur Brændeland1-5/+5
Remove assignment at declaration when not needed. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericssion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-25caif-hsi: Use netdev_X instead of dev_X for printingSjur Brændeland1-47/+47
Replace dev_X with the corresponding netdev_X print function when applicable. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericssion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-25caif-hsi: changed test on aggregation_timeoutKim Lilliestierna XX1-1/+1
Aggregation_timeout is an unsigned long, a test for less than zero can never become true, compare with zero instead. Signed-off-by: Kim Lilliestierna <kim.xx.lilliestierna@stericsson.com> Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-25caif-hsi: Removed dead codeKim Lilliestierna XX1-7/+4
Simplify logic and remove dead code. Signed-off-by: Kim Lilliestierna <kim.xx.lilliestierna@stericsson.com> Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-25caif-hsi: Add missing return in error pathSjur Brændeland1-0/+1
Fix a missing return, causing access to freed memory. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-25caif-hsi: Bugfix - Piggyback'ed embedded CAIF frame lostPer Ellefsen1-2/+2
When receiving a piggyback'ed descriptor containing an embedded frame, but no payload, the embedded frame was lost. Signed-off-by: Per Ellefsen <per.ellefsen@stericsson.com> Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13caif-hsi: Postpone init of HSI until open()sjur.brandeland@stericsson.com1-52/+45
Do the initialization of the HSI interface when the interface is opened, instead of upon registration. When the interface is closed the HSI interface is de-initialized, allowing other modules to use the HSI interface. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13caif-hsi: Remove stop/start of queue.sjur.brandeland@stericsson.com1-10/+0
CAIF HSI is currently a virtual device. Stopping/starting the queues is wrong on a virtual device. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13caif-hsi: robust frame aggregation for HSIDmitry Tarnyagin1-55/+188
Implement aggregation algorithm, combining more data into a single HSI transfer. 4 different traffic categories are supported: 1. TC_PRIO_CONTROL .. TC_PRIO_MAX (CTL) 2. TC_PRIO_INTERACTIVE (VO) 3. TC_PRIO_INTERACTIVE_BULK (VI) 4. TC_PRIO_BESTEFFORT, TC_PRIO_BULK, TC_PRIO_FILLER (BEBK) Signed-off-by: Dmitry Tarnyagin <dmitry.tarnyagin@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13caif_hsi: use dev_dbg not dev_err for reportingKim Lilliestierna XX1-2/+2
Use dev_dbg instead of dev_err for reporting in cfhsi_wakeup_cb. Signed-off-by: Kim Lilliestierna <kim.xx.lilliestierna@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-04-13caif-hsi: Free flip_buffer at shutdownsjur.brandeland@stericsson.com1-2/+3
Fix memory leak of RX flip-buffer. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-03-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller1-1/+1
2012-03-06caif-hsi: Set default MTU to 4096Sjur Brændeland1-1/+1
Default MTU for CAIF HSI was wrongly set to 15 * 4092 bytes. The patch sets default MTU size to 4096. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-04caif-hsi: Add RX flip buffersjur.brandeland@stericsson.com1-42/+103
Implement RX flip buffer in the cfhsi_rx_done function, piggy-backed frames is also supported. This gives a significant performance gain for CAIF over HSI. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06caif: Replace BUG_ON with WARN_ON.Roar Førde1-1/+1
BUG_ON is too strict in a number of circumstances, use WARN_ON instead. Protocol errors should not halt the system. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-12-06caif-hsi: Remove wake line modification when flushing FIFOChristian Auby1-11/+0
Raising wake before flushing FIFO and lowering it after caused a spike on AC wake that were sometimes detected and acted upon by the modem. Fixed this by remove wake line modification when flushing FIFO. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19caif-hsi: Added recovery check of CA wake status.Daniel Martensson1-2/+40
Added recovery check of CA wake status in case of wake up timeout. Added check of CA wake status in case of wake down timeout. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19caif-hsi: Added sanity check for length of CAIF framesDaniel Martensson1-30/+49
Added sanity check for length of CAIF frames, and tear down of CAIF link-layer device upon protocol error. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19caif-hsi: Make inactivity timeout configurable.Dmitry Tarnyagin1-5/+23
CAIF HSI uses a timer for inactivity. Upon timeout HSI-wake signaling is initiated to allow power-down of the HSI block. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19caif-hsi: HSI-Platform device register and unregisters itselfDaniel Martensson1-12/+4
Platform device is no longer removed from caif_hsi at shutdown. The HSI-platform device must do it's own registration and unregistration. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19caif-hsi: Making read and writes asynchronous.Daniel Martensson1-136/+127
Some platforms do not allow to put HSI block into low-power mode when FIFO is not empty. The patch flushes (by reading) FIFO at wake down sequence. Asynchronous read and write is implemented for that. As a side effect this will also greatly improve performance. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19caif-hsi: Fix for wakeup condition problemDmitry Tarnyagin1-3/+7
Under stressed conditions a race could happen when del_timer_sync() was called from softirq context at the same time when mod_timer_pending() for the same timer was called from the workqueue. This leaded to a state mismatch in the CAIF HSI driver and following unexpected link wakeup procedure. The fix puts del_timer_sync() and mod_timer_pending() calls under a spin lock to protect against the race condition. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19caif-hsi: Fixing a race condition in the caif_hsi codeDmitry Tarnyagin1-7/+18
cfhsi->tx_state was not protected by a spin lock. TX soft-irq could interrupt cfhsi_tx_done_work work leading to inconsistent state of the driver. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-10-19caif-hsi: HSI Fix uninitialized data in HSI headersjur.brandeland@stericsson.com1-6/+6
CAIF HSI header may be uninitialized and cause last message to be repeated if transmit size is ~86 bytes long. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-08-28caif: Remove OOM messages, use kzallocJoe Perches1-8/+1
Remove per site OOM messages because they duplicate the generic mm subsystem OOM message. Use kzalloc instead of kmalloc/memset when next to the OOM message removals. Reduces object size (allyesconfig ~2%) $ size -t drivers/net/caif/built-in.o.old net/caif/built-in.o.old text data bss dec hex filename 32297 700 8224 41221 a105 drivers/net/caif/built-in.o.old 72159 1317 20552 94028 16f4c net/caif/built-in.o.old 104456 2017 28776 135249 21051 (TOTALS) $ size -t drivers/net/caif/built-in.o.new net/caif/built-in.o.new text data bss dec hex filename 31975 700 8184 40859 9f9b drivers/net/caif/built-in.o.new 70748 1317 20152 92217 16839 net/caif/built-in.o.new 102723 2017 28336 133076 207d4 (TOTALS) Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-07-07net: fix warning of versioncheckShan Wei1-1/+0
net-next-2.6/drivers/net/bnx2x/bnx2x_sp.c: 19 linux/version.h not needed. net-next-2.6/drivers/net/caif/caif_hsi.c: 9 linux/version.h not needed. Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-29caif: Fix recieve/receive typoJoe Perches1-1/+1
Just spelling fixes. Actually, a twofer with vaiables/variables as well. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-06-01caif: Add CAIF HSI Link layer driverDmitry.Tarnyagin1-0/+1220
This patch introduces the CAIF HSI Protocol Driver for the CAIF Link Layer. This driver implements a platform driver to accommodate for a platform specific HSI devices. A general platform driver is not possible as there are no HSI side Kernel API defined. Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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