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2012-05-17regmap: Fix typo in IRQ register stridingMark Brown
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-05-17isci: End the RNC resumption wait when the RNC is destroyed.Jeff Skirvin
While the RNC is suspended for I/O cleanup, the remote device can be stopped and the RNC setup for destruction. These changes accomodate that case in the abort path. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Fixed RNC bug that lost the suspension or resumption during destroyJeff Skirvin
This fix corrects the saving of resume parameters when the destruction of the RNC has already been directed, and makes sure not to overwrite the RNC destruction callbacks. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Fix RNC AWAIT_SUSPENSION->INVALIDATING transition.Jeff Skirvin
The RNC state machine would incorrectly transition from SCI_RNC_AWAIT_SUSPENSION directly to SCI_RNC_INVALIDATING when a destruct request was made. This would skip the increment of the suspension count and the abort of pending TCs (although the invalidating state would at least cleanup outstanding TCs). Instead, the RNC will transition to SCI_RNC_SUSPENDED and then start the destruction process. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Manage the IREQ_NO_AUTO_FREE_TAG under scic_lock.Jeff Skirvin
Since there is a possibilty of a timeout waiting for the RNC suspension, handle the exit case from the task termination under scic_lock, and leave the tag allocated if the termination timed-out. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Remove obviated host callback list.Jeff Skirvin
Since the callbacks to libsas now occur under scic_lock, there is no longer any reason to save the completed requests in a separate list for completion to libsas. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Check IDEV_GONE before performing abort path operations.Jeff Skirvin
In the link fail path, set IDEV_GONE for every device on the domain when the last link in the port fails. In the abort path functions like isci_reset_device, make sure that there has not already been a detected domain failure with the device by checking IDEV_GONE, before performing any kind of hard reset, SMP phy control, or TMF operation. The check for IDEV_GONE makes sure that the device in the abort path really has control of the port with which it is associated. This prevents starting hard resets at incorrect times and scheduling unnecessary LUN resets for SATA devices. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Restore the ATAPI device RNC management code.Jeff Skirvin
The ATAPI specific and STP general RNC suspension code had been incorrectly removed from the remote device code. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Don't wait for an RNC suspend if it's being destroyed.Jeff Skirvin
Make sure that the wait for suspend can handle the RNC destruction case. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Change the phy control and link reset interface for HW reasons.Jeff Skirvin
There is an apparent HW lockup caused when the PE is disabled while there is an outstanding TC in progress. This change puts the link into OOB to force the TC to end before the PE is disabled. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Added timeouts to RNC suspensions in the abort path.Jeff Skirvin
This change adds timeouts to the RNC suspension wait. It makes the suspend and resume timeouts the same. The previous resume timeout of 5 ms was too short, and timeouts were seen in resumptions of devices in the abort task/LUN reset path - which would receive an RNC resumed message within a tenth of a second later. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Add protocol indicator for TMF requests.Jeff Skirvin
Requests contructed as task management requests need to have the protocol indicator set so the completion decode can observe any RNC suspension conditions. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Directly control IREQ_ABORT_PATH_ACTIVE when completing TMFs.Jeff Skirvin
TMF requests, unlike normal I/O requests, need to handle I/O management conditions in the completion function because TMFs are not handled in the completion tasklet. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Wait for RNC resumption before leaving the abort path.Jeff Skirvin
In the case of TMF execution, or device resets, wait for the RNC to fully resume before returning to the caller. This ensures that the remote device will not fail I/O requests while waiting for the RNC resumption to complete. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Fix RNC suspend call for SCI_RESUMING state.Jeff Skirvin
Instead of immediately transitioning to the SCI_RNC_AWAIT_SUSPENSION state, handle the SCI_RNC_RESUMING suspend transition from the SCI_RNC_READY state like the SCI_RNC_INVALIDATING --> SCI_RNC_POSTING transitions do now, by setting the destination state for the entry into the READY state. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Manage tag releases differently when aborting tasks.Jeff Skirvin
When an individual request is being terminated, the request's tag is managed in the terminate function. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Callbacks to libsas occur under scic_lock and are synchronized.Jeff Skirvin
This patch changes the callback mechanism to libsas to only occur while the scic_lock is held; the abort path cleanup of I/Os also checks to make sure IREQ_ABORT_PATH_ACTIVE is clear before proceding. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: When in the abort path, defeat other resume calls until done.Jeff Skirvin
Completion of I/Os during the one of the abort path interface calls from libsas can drive remote device state changes and the resumption of the device RNC. This is a problem when the abort path is attempting to cleanup outstanding I/O at the same time - the resumption can prevent the termination from occuring correctly. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Implement waiting for suspend in the abort path.Jeff Skirvin
In order to prevent a device from receiving an I/O request while still in an RNC suspending or resuming state (and therefore failing that I/O back to libsas with a reset required status) wait for the RNC state change before proceding in the abort path. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Make sure all TCs are terminated and cleaned in LUN reset.Jeff Skirvin
In the libsas error path, SATA disks require extra handling in libata to recover operation. However, libsas expects to be able to immediately recover all outstanding I/O once the error handler escalation stops. This patch fixes the condition where the libata error handler is scheduled for operation but libsas has already deleted the outstanding sas_tasks. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Manage the LLHANG timer enable/disable per-device.Jeff Skirvin
The LLHANG timer should be enabled once per device. This patch corrects both the timer enable and the timer disable for the remote device. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Save the suspension hint for upcoming suspensions.Jeff Skirvin
In the case of a suspend call while in SCI_RNC_POSTING or INVALIDATING states, the LLHANG detect needed to be saved so the upcoming suspension would enable it correctly. The unused suspend callback parameters were removed. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Fix the terminated I/O to not call sas_task_abort().Jeff Skirvin
This addresses a regression from the commit "isci: Redesign device suspension, abort, cleanup." in which the sas_task end condition for terminated I/Os was made to call back on sas_task_abort()". This commit will be rolled into the original. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Distinguish between remote device suspension casesJeff Skirvin
For NCQ error conditions among others, there is no need to enable the link layer hang detect timer. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Remove isci_device reqs_in_process and dev_node from isci_device.Jeff Skirvin
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Only set IDEV_GONE in the device stop path.Jeff Skirvin
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: All pending TCs are terminated when the RNC is invalidated.Jeff Skirvin
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Device access in the error path does not depend on IDEV_GONE.Jeff Skirvin
Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Add suspension cases for RNC INVALIDATING, POSTING states.Jeff Skirvin
The RNC can be any of the states in the loop from suspended to ready when the API "suspend" or "resume" are called. This change adds destination states parameters that control the suspension / resumption action of the RNC statemachine for those transition states. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Redesign device suspension, abort, cleanup.Jeff Skirvin
This commit changes the means by which outstanding I/Os are handled for cleanup. The likelihood is that this commit will be broken into smaller pieces, however that will be a later revision. Among the changes: - All completion structures have been removed from the tmf and abort paths. - Now using one completed I/O list, with the I/O completed in host bit being used to select error or normal callback paths. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Escalate to I_T_Nexus_Reset when the device is gone.Jeff Skirvin
If LUN reset sees that the device is gone, it returns TMF_RESP_FUNC_FAILED to cause libsas to escalate to an I_T_Nexus_Reset. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Remote device stop also suspends the RNC and terminates I/O.Jeff Skirvin
Fixing the remote device state machine to suspend and terminate all outstanding I/O before the device stopped state is reached. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Remote device must be suspended for NCQ cleanup.Jeff Skirvin
When the remote device enters the NCQ error state, the device must be suspended so that the I/O terminations can take place. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Manage device suspensions during TC terminations.Jeff Skirvin
TCs must be terminated only while the RNC is suspended. This commit adds remote device suspensions and resumptions in the abort, reset and termination paths. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Terminate outstanding TCs on TX/RX RNC suspensions.Jeff Skirvin
TCs must only be terminated when RNCs are suspended. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Handle all suspending TC completionsJeff Skirvin
Add comprehensive decode for all TC completions that generate RNC suspensions. Note that this commit also removes unconditional resumptions of ATAPI devices when in the SCI_STP_DEV_ATAPI_ERROR state, and STP devices when in the SCI_STP_DEV_IDLE state. This is because the SCI_STP_DEV_IDLE and SCI_STP_DEV_ATAPI state entry functions manage the RNC resumption. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Fixed bug in resumption from RNC Tx/Rx suspend state.Jeff Skirvin
The resumption from the Tx/Rx suspended state should work the same as the Tx suspended state. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17isci: Manage the link layer hang detect timer for RNC suspensions.Jeff Skirvin
For STP devices under certain protocol conditions, an RNC will not suspend until the current transfer state is broken with a SYNC/ESC sequence from the SCU. The SYNC/ESC driven by expiration of the SCU link layer hang detect timer, which has too small a dynamic range to support slow SATA devices, so normally it is disabled. This change enables the timer with the minimum period at the point when the suspension is requested. Note that there is potential collateral damage to other open connections to slow SATA devices on the same port, since there is no alternative but to enable the LLHANG timer on every phy in the port for the current suspension request - there is no way to tell on which phy the RNC in question is currently active. Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-05-17xtensa: Change mail addresses of Hannes Weiner and Oskar SchirmerOskar Schirmer
These old mail addresses dont exist any more. This changes all occurences to the authors' current addresses. Signed-off-by: Oskar Schirmer <oskar@scara.com> Cc: Chris Zankel <chris@zankel.net> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2012-05-17drivers/net: delete all code/drivers depending on CONFIG_MCAPaul Gortmaker
The support for CONFIG_MCA is being removed, since the 20 year old hardware simply isn't capable of meeting today's software demands on CPU and memory resources. This commit removes any MCA specific net drivers, and removes any MCA specific probe/support code from drivers that were doing a dual ISA/MCA role. Cc: "David S. Miller" <davem@davemloft.net> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: netdev@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2012-05-17serial: bfin_uart: Make MMR access compatible with 32 bits bf609 style ↵Sonic Zhang
controller. Simplify serial data width calculation and adapt to bf609 LCR bit mask. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-05-17serial: bfin_uart: RTS and CTS MMRs can be either 16-bit width or 32-bit width.Sonic Zhang
Change hardware flow control code to adapt to both bf5xx and bf60x. Disabled serial device before set termios for bf60x. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-05-17serial: bfin_uart: narrow the reboot condition in DMA tx interruptSonic Zhang
Check if xmit buffer pointers are set to zero. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-05-17serial: bfin_uart: Adapt bf5xx serial driver to bf60x serial4 controller.Sonic Zhang
The serial4 controller on bf60x is an enhanced version of serial controller on bf5xx. MMR size is 32 bits other than 16 bits. MMR GCTL, MCR and LCR are combined into one control MMR. MSR and LSR are combined into one status MMR. This patch adapts current bf5xx serial driver to serial4 controller on bf60x. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-05-17Merge branch '3.4-urgent' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending Pull two more target-core updates from Nicholas Bellinger: "The first patch addresses a SPC-2 reservations RELEASE bug in a special (iscsi specific) multi-ISID setup case that was allowing the same initiator to be able to incorrect release it's own reservation on a different SCSI path with enforce_pr_isid=1 operation. This bug was caught by Bernhard Kohl. The second patch is to address a bug with FILEIO backends where the incorrect number of blocks for READ_CAPACITY was being reported after an underlying device-mapper block_device size change. This patch uses now i_size_read() in fd_get_blocks() for FILEIO backends with an underlying block_device, instead of trying to determine this value at setup time during fd_create_virtdevice(). (hch CC'ed) Both are CC'ed to stable." * '3.4-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: target: Fix bug in handling of FILEIO + block_device resize ops target: Fix SPC-2 RELEASE bug for multi-session iSCSI client setups
2012-05-17net/mlx4_en: num cores tx rings for every UPAmir Vadai
Change the TX ring scheme such that the number of rings for untagged packets and for tagged packets (per each of the vlan priorities) is the same, unlike the current situation where for tagged traffic there's one ring per priority and for untagged rings as the number of core. Queue selection is done as follows: If the mqprio qdisc is operates on the interface, such that the core networking code invoked the device setup_tc ndo callback, a mapping of skb->priority => queue set is forced - for both, tagged and untagged traffic. Else, the egress map skb->priority => User priority is used for tagged traffic, and all untagged traffic is sent through tx rings of UP 0. The patch follows the convergence of discussing that issue with John Fastabend over this thread http://comments.gmane.org/gmane.linux.network/229877 Cc: John Fastabend <john.r.fastabend@intel.com> Cc: Liran Liss <liranl@mellanox.com> Signed-off-by: Amir Vadai <amirv@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-17staging: gdm72xx depends on NETRandy Dunlap
gdm72xx uses networking interfaces, so it should depend at least on NET (maybe on WIMAX?). ERROR: "sock_release" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "netif_carrier_on" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "netif_carrier_off" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "skb_realloc_headroom" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "netif_rx" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "netlink_kernel_create" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "netif_rx_ni" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "dev_alloc_skb" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "free_netdev" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "register_netdev" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "skb_push" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "dev_get_by_index" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "skb_pull" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "init_net" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "__alloc_skb" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "netlink_broadcast" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "kfree_skb" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "alloc_netdev_mqs" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "eth_type_trans" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "ether_setup" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "unregister_netdev" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "__netif_schedule" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "skb_put" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "sock_wfree" [drivers/staging/gdm72xx/gdmwm.ko] undefined! ERROR: "__nlmsg_put" [drivers/staging/gdm72xx/gdmwm.ko] undefined! Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-05-17staging: gdm72xx: Set up parent link in sysfs for gdm72xx devicesPaul Stewart
This patch uses SET_NETDEV_DEV to set up a 'device' parent link in sysfs (e.g. /sys/class/net/wm0/device) for a gdm72xx device. Signed-off-by: Paul Stewart <pstew@chromium.org> Signed-off-by: Ben Chan <benchan@chromium.org> Cc: Sage Ahn <syahn@gctsemi.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-05-17drop_monitor: convert to modular buildingNeil Horman
When I first wrote drop monitor I wrote it to just build monolithically. There is no reason it can't be built modularly as well, so lets give it that flexibiity. I've tested this by building it as both a module and monolithically, and it seems to work quite well Change notes: v2) * fixed for_each_present_cpu loops to be more correct as per Eric D. * Converted exit path failures to BUG_ON as per Ben H. v3) * Converted del_timer to del_timer_sync to close race noted by Ben H. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> CC: Eric Dumazet <eric.dumazet@gmail.com> CC: Ben Hutchings <bhutchings@solarflare.com> Reviewed-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-17net: netdev_alloc_skb() use build_skb()Eric Dumazet
netdev_alloc_skb() is used by networks driver in their RX path to allocate an skb to receive an incoming frame. With recent skb->head_frag infrastructure, it makes sense to change netdev_alloc_skb() to use build_skb() and a frag allocator. This permits a zero copy splice(socket->pipe), and better GRO or TCP coalescing. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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