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* kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERTDavid Rientjes2011-01-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The meaning of CONFIG_EMBEDDED has long since been obsoleted; the option is used to configure any non-standard kernel with a much larger scope than only small devices. This patch renames the option to CONFIG_EXPERT in init/Kconfig and fixes references to the option throughout the kernel. A new CONFIG_EMBEDDED option is added that automatically selects CONFIG_EXPERT when enabled and can be used in the future to isolate options that should only be considered for embedded systems (RISC architectures, SLOB, etc). Calling the option "EXPERT" more accurately represents its intention: only expert users who understand the impact of the configuration changes they are making should enable it. Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: David Woodhouse <david.woodhouse@intel.com> Signed-off-by: David Rientjes <rientjes@google.com> Cc: Greg KH <gregkh@suse.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jens Axboe <axboe@kernel.dk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Robin Holt <holt@sgi.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2011-01-2020-210/+424
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (41 commits) sctp: user perfect name for Delayed SACK Timer option net: fix can_checksum_protocol() arguments swap Revert "netlink: test for all flags of the NLM_F_DUMP composite" gianfar: Fix misleading indentation in startup_gfar() net/irda/sh_irda: return to RX mode when TX error net offloading: Do not mask out NETIF_F_HW_VLAN_TX for vlan. USB CDC NCM: tx_fixup() race condition fix ns83820: Avoid bad pointer deref in ns83820_init_one(). ipv6: Silence privacy extensions initialization bnx2x: Update bnx2x version to 1.62.00-4 bnx2x: Fix AER setting for BCM57712 bnx2x: Fix BCM84823 LED behavior bnx2x: Mark full duplex on some external PHYs bnx2x: Fix BCM8073/BCM8727 microcode loading bnx2x: LED fix for BCM8727 over BCM57712 bnx2x: Common init will be executed only once after POR bnx2x: Swap BCM8073 PHY polarity if required iwlwifi: fix valid chain reading from EEPROM ath5k: fix locking in tx_complete_poll_work ath9k_hw: do PA offset calibration only on longcal interval ...
| * gianfar: Fix misleading indentation in startup_gfar()Anton Vorontsov2011-01-191-1/+1
| | | | | | | | | | | | | | | | | | Just stumbled upon the issue while looking for another bug. The code looks correct, the indentation is not. Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net/irda/sh_irda: return to RX mode when TX errorKuninori Morimoto2011-01-191-2/+12
| | | | | | | | | | | | | | | | | | sh_irda can not use RX/TX in same time, but this driver didn't return to RX mode when TX error occurred. This patch care xmit error case to solve this issue. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * USB CDC NCM: tx_fixup() race condition fixAlexey Orishko2011-01-191-7/+12
| | | | | | | | | | | | | | | | | | | | - tx_fixup() can be called from either timer callback or from xmit() in usbnet, so spinlock is added to avoid concurrency-related problem. - minor correction due to checkpatch warning for some line over 80 chars after previous patch was applied. Signed-off-by: Alexey Orishko <alexey.orishko@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * ns83820: Avoid bad pointer deref in ns83820_init_one().Jesper Juhl2011-01-191-3/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In drivers/net/ns83820.c::ns83820_init_one() we dynamically allocate memory via alloc_etherdev(). We then call PRIV() on the returned storage which is 'return netdev_priv()'. netdev_priv() takes the pointer it is passed and adds 'ALIGN(sizeof(struct net_device), NETDEV_ALIGN)' to it and returns it. Then we test the resulting pointer for NULL, which it is unlikely to be at this point, and later dereference it. This will go bad if alloc_etherdev() actually returned NULL. This patch reworks the code slightly so that we test for a NULL pointer (and return -ENOMEM) directly after calling alloc_etherdev(). Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Benjamin LaHaise <bcrl@kvack.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * bnx2x: Update bnx2x version to 1.62.00-4Yaniv Rosner2011-01-191-2/+2
| | | | | | | | | | | | | | | | Update bnx2x version to 1.62.00-4 Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * bnx2x: Fix AER setting for BCM57712Yaniv Rosner2011-01-191-1/+1
| | | | | | | | | | | | | | | | Fix AER settings for BCM57712 to allow accessing all device addresses range in CL45 MDC/MDIO Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * bnx2x: Fix BCM84823 LED behaviorYaniv Rosner2011-01-192-1/+21
| | | | | | | | | | | | | | | | Fix BCM84823 LED behavior which may show on some systems Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * bnx2x: Mark full duplex on some external PHYsYaniv Rosner2011-01-191-1/+8
| | | | | | | | | | | | | | | | Device may show incorrect duplex mode for devices with external PHY Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * bnx2x: Fix BCM8073/BCM8727 microcode loadingYaniv Rosner2011-01-191-30/+43
| | | | | | | | | | | | | | | | Improve microcode loading verification before proceeding to next stage Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * bnx2x: LED fix for BCM8727 over BCM57712Yaniv Rosner2011-01-191-1/+17
| | | | | | | | | | | | | | | | LED on BCM57712+BCM8727 systems requires different settings Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * bnx2x: Common init will be executed only once after PORYaniv Rosner2011-01-191-0/+11
| | | | | | | | | | | | | | | | | | Common init used to be called by the driver when the first port comes up, mainly to reset and reload external PHY microcode. However, in case management driver is active on the other port, traffic would halted. So limit the common init to be done only once after POR. Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * bnx2x: Swap BCM8073 PHY polarity if requiredYaniv Rosner2011-01-192-0/+46
| | | | | | | | | | | | | | | | Enable controlling BCM8073 PN polarity swap through nvm configuration, which is required in certain systems Signed-off-by: Yaniv Rosner <yanivr@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * Merge branch 'master' of ↵David S. Miller2011-01-189-13/+22
| |\ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
| | * iwlwifi: fix valid chain reading from EEPROMWey-Yi Guy2011-01-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When read valid tx/rx chains from EEPROM, there is a bug to use the tx chain value for both tx and rx, the result of this cause low receive throughput on 1x2 devices becuase rx will only utilize single chain instead of two chains Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * ath5k: fix locking in tx_complete_poll_workBob Copeland2011-01-181-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | ath5k_reset must be called with sc->lock. Since the tx queue watchdog runs in a workqueue and accesses sc, it's appropriate to just take the lock over the whole function. Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * ath9k_hw: do PA offset calibration only on longcal intervalRajkumar Manoharan2011-01-171-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The power detector adc offset calibration has to be done on 4 minutes interval (longcal * pa_skip_count). But the commit "ath9k_hw: fix a noise floor calibration related race condition" makes the PA calibration executed more frequently beased on nfcal_pending value. Running PAOffset calibration lesser than longcal interval doesn't help anything and the worse part is that it causes NF load timeouts and RX deaf conditions. In a very noisy environment, where the distance b/w AP & station is ~10 meter and running a downlink udp traffic with frequent background scan causes "Timeout while waiting for nf to load: AR_PHY_AGC_CONTROL=0x40d1a" and moves the chip into deaf state. This issue was originaly reported in Android platform where the network-manager application does bgscan more frequently on AR9271 chips. (AR9285 family usb device). Cc: stable@kernel.org Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * ath9k_htc: Fix endian issue in tx headerRajkumar Manoharan2011-01-172-4/+6
| | | | | | | | | | | | | | | Signed-off-by: Rajkumar Manoharan <rmanoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * ath9k_hw: ASPM interoperability fix for AR9380/AR9382Luis R. Rodriguez2011-01-172-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is an interoperability with AR9382/AR9380 in L1 state with a few root complexes which can cause a hang. This is fixed by setting some work around bits on the PCIE PHY. We fix by using a new ini array to modify these bits when the radio is idle. Cc: stable@kernel.org Cc: Jack Lee <jack.lee@atheros.com> Cc: Carl Huang <carl.huang@atheros.com> Cc: David Quan <david.quan@atheros.com> Cc: Nael Atallah <nael.atallah@atheros.com> Cc: Sarvesh Shrivastava <sarvesh.shrivastava@atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * rt2x00: Don't leak mem in error path of rt2x00lib_request_firmware()Jesper Juhl2011-01-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | We need to release_firmware() in order not to leak memory. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Acked-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * iwmc3200wifi: Return proper error for iwm_if_allocAxel Lin2011-01-131-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the case of alloc_netdev_mq failure and kmalloc failure, current implementation returns ERR_PTR(0). As a result, the caller of iwm_if_alloc does not catch the error by IS_ERR macro. Fix it by setting proper error code for ret variable in the failure cases. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| * | vmxnet3: Dont allocate extra MSI-x vectorsShreyas Bhatewara2011-01-162-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | In case of single tx and rx queues, three MSI-x vectors are allocated instead of two. This patch fixes that. Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | vmxnet3: Add locking for access to command registerShreyas Bhatewara2011-01-163-0/+54
| | | | | | | | | | | | | | | | | | | | | | | | | | | Access to cmd register is racey, especially in smp environments. Protect it using a spinlock. Signed-off-by: Matthieu Bucchianeri <matthieu@vmware.com> Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | vmxnet3: Disable napi in suspend, reenable in resume.Shreyas Bhatewara2011-01-161-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is a small possibility of a race where the suspend routine gets called, while a napi callback is still pending and when that comes up, it enables interrupts which just got disabled in the suspend routine. This change adds napi disable call in suspend and enable in resume to avoid race. Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com> Acked-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | vmxnet3: Make ethtool handlers multiqueue awareShreyas Bhatewara2011-01-161-114/+145
| | | | | | | | | | | | | | | | | | | | | | | | Show per-queue stats in ethtool -S output for vmxnet3 interface. Register dump of ethtool should dump registers for all tx and rx queues. Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | vmxnet3: Provide required number of bytes in first SG bufferShreyas Bhatewara2011-01-161-14/+9Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a performance enhancement fix. vmxnet3 device performs better when provided with at least 54 bytes (ethernet 14 + IP 20+ TCP 20) in the first SG buffer. For UDP packets driver provides lesser than that in first sg. This change fixes the same. Also avoid the redundant pskb_may_pull() call. Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | vmxnet3: Enable HW Rx VLAN stripping by defaultShreyas Bhatewara2011-01-161-13/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | Make hw vlan tag stripping as enabled by default. Thereby remove the code to conditionally enable it later. Signed-off-by: Guolin Yang <gyang@vmware.com> Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | vmxnet3: Preserve the MAC address configured by ifconfigShreyas Bhatewara2011-01-161-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | While activating the device get it's MAC address from netdev. This will allow the MAC address configured using ifconfig to persist through the reset. Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | vmxnet3: fix ring size updateShreyas Bhatewara2011-01-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Fix a bug while changing ring size when MTU is changed. Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com> Acked-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2011-01-174-15/+19
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: RDMA: Update workqueue usage RDMA/nes: Fix incorrect SFP+ link status detection on driver init RDMA/nes: Fix SFP+ link down detection issue with switch port disable RDMA/nes: Generate IB_EVENT_PORT_ERR/PORT_ACTIVE events RDMA/nes: Fix bonding on iw_nes IB/srp: Test only once whether iu allocation succeeded IB/mlx4: Handle protocol field in multicast table RDMA: Use vzalloc() to replace vmalloc()+memset(0) mlx4_{core, ib, en}: Fix driver when sizeof (phys_addr_t) > sizeof (long) IB/mthca: Fix driver when sizeof (phys_addr_t) > sizeof (long)
| * | | IB/mlx4: Handle protocol field in multicast tableAleksey Senin2011-01-121-10/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The newest device firmware stores IB vs. Ethernet protocol in two bits in members_count field of multicast group table (0: Infiniband, 1: Ethernet). When changing the QP members count for a multicast group, it important not to reset this information. When calling multicast attach first time, the protocol type should be specified. In this patch we always set it IB, but in the future we will handle Ethernet too. When looking for a QP, the protocol type shoud be checked too. Signed-off-by: Aleksey Senin <alekseys@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * | | mlx4_{core, ib, en}: Fix driver when sizeof (phys_addr_t) > sizeof (long)Roland Dreier2011-01-123-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some systems have PCI addresses that don't fit in unsigned long (eg some 32-bit PowerPC 440 systems have 36-bit bus addresses). Fix up mlx4 drivers by using phys_addr_t where appropriate, so we don't truncate any PCI resource addresses before ioremapping them. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* | | | Merge branch 'for-linus' of ↵Linus Torvalds2011-01-171-2/+1Star
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/nab/scsi-post-merge-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/scsi-post-merge-2.6: ocfs2: Make OCFS2_FS depend on CONFIGFS_FS dlm: Make DLM depend on CONFIGFS_FS net: Make NETCONSOLE_DYNAMIC depend on CONFIGFS_FS configfs: change depends -> select SYSFS [SCSI] sd,sr: kill compat SDEV_MEDIA_CHANGE event [SCSI] sd: implement sd_check_events()
| * | | | net: Make NETCONSOLE_DYNAMIC depend on CONFIGFS_FSNicholas Bellinger2011-01-161-2/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes the following kconfig error after changing CONFIGFS_FS -> select SYSFS: fs/sysfs/Kconfig:1:error: recursive dependency detected! fs/sysfs/Kconfig:1: symbol SYSFS is selected by CONFIGFS_FS fs/configfs/Kconfig:1: symbol CONFIGFS_FS is selected by NETCONSOLE_DYNAMIC drivers/net/Kconfig:3390: symbol NETCONSOLE_DYNAMIC depends on SYSFS Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org> Cc: Joel Becker <jlbec@evilplan.org> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: James Bottomley <James.Bottomley@suse.de>
* | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2011-01-1438-505/+512
|\ \ \ \ \ | | |_|/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (47 commits) GRETH: resolve SMP issues and other problems GRETH: handle frame error interrupts GRETH: avoid writing bad speed/duplex when setting transfer mode GRETH: fixed skb buffer memory leak on frame errors GRETH: GBit transmit descriptor handling optimization GRETH: fix opening/closing GRETH: added raw AMBA vendor/device number to match against. cassini: Fix build bustage on x86. e1000e: consistent use of Rx/Tx vs. RX/TX/rx/tx in comments/logs e1000e: update Copyright for 2011 e1000: Avoid unhandled IRQ r8169: keep firmware in memory. netdev: tilepro: Use is_unicast_ether_addr helper etherdevice.h: Add is_unicast_ether_addr function ks8695net: Use default implementation of ethtool_ops::get_link ks8695net: Disable non-working ethtool operations USB CDC NCM: Don't deref NULL in cdc_ncm_rx_fixup() and don't use uninitialized variable. vxge: Remember to release firmware after upgrading firmware netdev: bfin_mac: Remove is_multicast_ether_addr use in netdev_for_each_mc_addr ipsec: update MAX_AH_AUTH_LEN to support sha512 ...
| * | | | GRETH: resolve SMP issues and other problemsDaniel Hellstrom2011-01-141-67/+92
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes the following: 1. POLL should not enable IRQ when work is not completed 2. No locking between TX descriptor cleaning and XMIT descriptor handling 3. No locking between RX POLL and XMIT modifying control register 4. Since TX cleaning (called from POLL) is running in parallel with XMIT unnecessary locking is needed. 5. IRQ handler looks at RX frame status solely, this is wrong when IRQ is temporarily disabled (in POLL), and when IRQ is shared. 6. IRQ handler clears IRQ status, which is unnecessary 7. TX queue was stopped in preventing cause when not MAX_SKB_FRAGS+1 descriptors were available after a SKB been scheduled by XMIT. Instead the TX queue is stopped first when not enough descriptors are available upon entering XMIT. It was hard to split up this patch in smaller pieces since all are tied together somehow. Note the RX flag used in the interrupt handler does not signal that interrupt was asserted, but that a frame was received. Same goes for TX. Also, IRQ is not asserted when the RX flag is set before enabling IRQ enable until a new frame is received. So extra care must be taken to avoid enabling IRQ and all descriptors are already used, hence dead lock will upon us. See new POLL implementation that enableds IRQ then look at the RX flag to determine if one or more IRQs may have been missed. TX/RX flags are cleared before handling previously enabled descriptors, this ensures that the RX/TX flags are valid when determining if IRQ should be turned on again. By moving TX cleaning from POLL to XMIT in the standard case, removes some locking trouble. Enabling TX cleaning from poll only when not enough TX descriptors are available is safe because the TX queue is at the same time stopped, thus XMIT will not be called. The TX queue is woken up again when enough descriptrs are available. TX Frames are always enabled with IRQ, however the TX IRQ Enable flag will not be enabled until XMIT must wait for free descriptors. Locking RX and XMIT parts of the driver from each other is needed because the RX/TX enable bits share the same register. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | GRETH: handle frame error interruptsDaniel Hellstrom2011-01-142-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Frame error interrupts must also be handled since the RX flag only indicates successful reception, it is unlikely but the old code may lead to dead lock if 128 error frames are recieved in a row. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | GRETH: avoid writing bad speed/duplex when setting transfer modeDaniel Hellstrom2011-01-141-11/+8Star
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | GRETH: fixed skb buffer memory leak on frame errorsDaniel Hellstrom2011-01-141-4/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A new SKB buffer should not be allocated when the old SKB is reused. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | GRETH: GBit transmit descriptor handling optimizationDaniel Hellstrom2011-01-141-9/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is safe to enable all fragments before enabling the first descriptor, this way all descriptors don't have to be processed twice, added extra memory barrier. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | GRETH: fix opening/closingDaniel Hellstrom2011-01-141-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When NAPI is disabled there is no point in having IRQs enabled, TX/RX should be off before clearing the TX/RX descriptor rings. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | GRETH: added raw AMBA vendor/device number to match against.Daniel Hellstrom2011-01-141-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | Merge branch 'master' of ↵David S. Miller2011-01-1413-136/+147
| |\ \ \ \ | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jkirsher/net-2.6
| | * | | | e1000e: consistent use of Rx/Tx vs. RX/TX/rx/tx in comments/logsBruce Allan2011-01-146-123/+126
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some minor comment errors and whitespace issues discovered while looking into this are also addressed. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| | * | | | e1000e: update Copyright for 2011Bruce Allan2011-01-1412-13/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| | * | | | e1000: Avoid unhandled IRQJesse Brandeburg2011-01-141-1/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If hardware asserted an interrupt and driver is down, then there is nothing to do so return IRQ_HANDLED instead of IRQ_NONE. Returning IRQ_NONE in above situation causes screaming IRQ on virtual machines. CC: Andy Gospodarek <gospo@redhat.com> Signed-off-by: Tushar Dave <tushar.n.dave@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Tested-by: <jeffrey.e.pieper@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| * | | | | Merge branch 'master' of ↵David S. Miller2011-01-142-14/+14
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/bwh/sfc-2.6
| | * | | | | sfc: Restore the effect of the rss_cpus module parameterBen Hutchings2011-01-131-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit a4900ac ("sfc: Create multiple TX queues") accidentally disabled the rss_cpus module parameter. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
| | * | | | | sfc: Make efx_get_tx_queue() an inline functionBen Hutchings2011-01-132-14/+11Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-11-06 09:43:25 +0100