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path: root/drivers/net/forcedeth.c
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2007-02-27forcedeth: fix checksum feature in mcp65Ayaz Abdulla1-4/+4
This patch removes checksum offload feature in mcp65 chipsets as they are not supported in hw. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-27forcedeth: disable msixAyaz Abdulla1-1/+1
There seems to be an issue when both MSI-X is enabled and NAPI is configured. This patch disables MSI-X until the issue is root caused. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-27forcedeth: fixed missing call in napi pollAyaz Abdulla1-3/+7
The napi poll routine was missing the call to the optimized rx process routine. This patch adds the missing call for the optimized path. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-05forcedeth: statistics optimizationAyaz Abdulla1-21/+17
This patch optimizes the data paths that can support hw counters. It removes the sw counted statistics. This is the last patch for the optimization set. Bumping up version of driver. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-05forcedeth: statistics supportedAyaz Abdulla1-79/+110
This patch introduces hw statistics for older devices that supported it. It breaks up the counters supported into separate versions. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-05forcedeth: tx max workAyaz Abdulla1-6/+12
This patch adds a limit to how much tx work can be done in each iteration of tx processing. If the max limit is reached, remaining tx completions will be handled by timer interrupt. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-05forcedeth: irq data path optimizationAyaz Abdulla1-72/+77
This patch optimizes the irq data paths and cleans up the code. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-05forcedeth: rx data path optimizationAyaz Abdulla1-182/+148
This patch optimizes the rx data paths and cleans up the code. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-05forcedeth: tx data path optimizationAyaz Abdulla1-57/+58
This patch optimizes the tx data paths and cleans up the code (removes vlan from descr1/2 since only valid for desc3, changes to make code easier to read, etc). Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-05forcedeth: tx limitingAyaz Abdulla1-16/+13
This patch optimizes the logic for tx limiting. It adds a flag to check on the completion side instead of recalculating the number of empty slots. Also, it removes the fields that were previous used for limiting since they have no value. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-05forcedeth: optimized routinesAyaz Abdulla1-133/+501
This patch breaks up the routines into two versions, one for legacy descriptor versions (ver 1 and ver 2) and one for desc ver 3. This will make the new desc functions more leaner and further reductions will be made in next few patches. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-05forcedeth: rx skb recycleAyaz Abdulla1-35/+43
This patch removes the code that recycled the skb on error. This will help in reducing the branches in the main data paths. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-05forcedeth: tx lockingAyaz Abdulla1-4/+5
This patch reduces the amount of code within the lock to only the critical sections. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-05forcedeth: ring accessAyaz Abdulla1-186/+265
This patch modifys ring access by using pointers. This avoids computing the current index and avoids accessing the base address of the rings. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-05forcedeth: dma accessAyaz Abdulla1-2/+2
This patch allows the hardware to fetch the tx and rx ring descriptors with 64 bytes per access instead of 32 bytes. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-02-05remove NETIF_F_TSO ifdeferyArjan van de Ven1-5/+1
Remove the NETIF_F_TSO #ifdef-ery in drivers/net; this was for old-old-2.4 compat (even current 2.4 has NETIF_F_TSO) but it's time to get rid of it by now. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-01-09forcedeth: sideband management fixAyaz Abdulla1-55/+56
This patch contains a fix that implements proper communication with the sideband management unit. Also, it makes sure that the speed is correctly set for gigabit phys in the case where sideband mgmt unit initialized the phy. Refer to bug #7684 for more details. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-12-26forcedeth: modified comment headerAyaz Abdulla1-3/+2
This patch removes comment that forcedeth is not supported by NVIDIA. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-12-26netpoll: drivers must not enable IRQ unconditionally in their NAPI handlerFrancois Romieu1-4/+7
net/core/netpoll.c::netpoll_send_skb() calls the poll handler when it is available. As netconsole can be used from almost any context, IRQ must not be enabled blindly in the NAPI handler of a driver which supports netpoll. b57bd06655a028aba7b92e1c19c2093e7fcfb341 fixed the issue for the 8139too.c driver. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-12-02[PATCH] forcedeth: add support for new mcp67 deviceAyaz Abdulla1-0/+16
Add support for the new mcp67 device into forcedeth. Signed-off-by: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-12-02[PATCH] forcedeth: add recoverable error supportAyaz Abdulla1-4/+74
This patch adds support to recover from a previously fatal MAC error. In the past the MAC would be hung on an internal fatal error. On new chipsets, the MAC has the ability to enter a non-fatal state and allow the driver to re-init it. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-12-02[PATCH] forcedeth: add mgmt unit supportAyaz Abdulla1-17/+134
This patch adds support for the mgmt unit in certain chipsets. The MAC and the mgmt unit share the PHY and therefore proper intialization procedures are needed for them to maintain coexistense. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-12-02[PATCH] forcedeth: power management supportFrancois Romieu1-1/+46
Tobias Diedrich <ranma@tdiedrich.de> sayeth: Vanilla forcedeth doesn't seem to support suspend and an ifdown/up-cycle is needed to get it working again after suspend. Francois Romieu's "Awfully experimental" patch is working just fine for me (with message signalled interrupts disabled) and has survived quite a few suspend/resume cycles. So I'd very much like to see (at least partial, with msi disabled) suspend support for forcedeth in mainline. (Addresses http://bugzilla.kernel.org/show_bug.cgi?id=6398) Cc: Francois Romieu <romieu@fr.zoreil.com> Cc; Jeff Garzik <jeff@garzik.org> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-11Merge branch 'master' into upstream-fixesJeff Garzik1-10/+10
2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells1-10/+10
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05[PATCH] forcedeth: hardirq lockdep warningPeter Zijlstra1-14/+17
BUG: warning at kernel/lockdep.c:1816/trace_hardirqs_on() (Not tainted) Call Trace: show_trace dump_stack trace_hardirqs_on :forcedeth:nv_nic_irq_other handle_IRQ_event __do_IRQ do_IRQ ret_from_intr DWARF2 barf default_idle cpu_idle rest_init start_kernel _sinittext These 3 functions nv_nic_irq_tx(), nv_nic_irq_rx() and nv_nic_irq_other() are reachable from IRQ context and process context. Make use of the irq-save/restore spinlock variant. (Compile tested only, since I do not have the hardware) Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Jeff Garzik <jeff@garzik.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Dave Jones <davej@redhat.com> Cc: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-25[PATCH] fix possible NULL ptr deref in forcedethJesper Juhl1-1/+7
There seems to be a possible NULL pointer deref bug in drivers/net/forcedeth.c::nv_loopback_test(). If dev_alloc_skb() fails, the next line will call skb_put() with a NULL first argument which it'll then try to deref - kaboom: a NULL pointer deref. Found by coverity (#1337). Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Cc: Ayaz Abdulla <aabdulla@nvidia.com> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Stephen Hemminger <shemminger@osdl.org> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-24Merge branch 'upstream-linus' of ↵Linus Torvalds1-201/+361
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (217 commits) net/ieee80211: fix more crypto-related build breakage [PATCH] Spidernet: add ethtool -S (show statistics) [NET] GT96100: Delete bitrotting ethernet driver [PATCH] mv643xx_eth: restrict to 32-bit PPC_MULTIPLATFORM [PATCH] Cirrus Logic ep93xx ethernet driver r8169: the MMIO region of the 8167 stands behin BAR#1 e1000, ixgb: Remove pointless wrappers [PATCH] Remove powerpc specific parts of 3c509 driver [PATCH] s2io: Switch to pci_get_device [PATCH] gt96100: move to pci_get_device API [PATCH] ehea: bugfix for register access functions [PATCH] e1000 disable device on PCI error drivers/net/phy/fixed: #if 0 some incomplete code drivers/net: const-ify ethtool_ops declarations [PATCH] ethtool: allow const ethtool_ops [PATCH] sky2: big endian [PATCH] sky2: fiber support [PATCH] sky2: tx pause bug fix drivers/net: Trim trailing whitespace [PATCH] ehea: IBM eHEA Ethernet Device Driver ... Manually resolved conflicts in drivers/net/ixgb/ixgb_main.c and drivers/net/sky2.c related to CHECKSUM_HW/CHECKSUM_PARTIAL changes by commit 84fa7933a33f806bbbaae6775e87459b1ec584c0 that just happened to be next to unrelated changes in this update.
2006-09-22[NET]: Replace CHECKSUM_HW by CHECKSUM_PARTIAL/CHECKSUM_COMPLETEPatrick McHardy1-1/+2
Replace CHECKSUM_HW by CHECKSUM_PARTIAL (for outgoing packets, whose checksum still needs to be completed) and CHECKSUM_COMPLETE (for incoming packets, device supplied full checksum). Patch originally from Herbert Xu, updated by myself for 2.6.18-rc3. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-09-13drivers/net: const-ify ethtool_ops declarationsJeff Garzik1-1/+1
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-11[PATCH] cleanup unnecessary forcedeth printkAndy Gospodarek1-1/+0
This removes unnecessary messages that show up every time I put my ethernet card in promiscuous mode. I'm already getting notification from the networking layer, I don't need notification from the driver as well. There are probably other drivers that do this as well -- I'll look around and see what I can find. Signed-off-by: Andy Gospodarek <andy@greyhouse.net> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-06[PATCH] forcedeth: decouple vlan and rx checksum dependencyAyaz Abdulla1-14/+9
This patch decouples the dependency between the rx checksum feature and vlan feature. This is done by ignoring the checksum information if the user has disabled rx checksum when vlan is enabled. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-06[PATCH] forcedeth: errata for marvell physAyaz Abdulla1-17/+56
This patch addresses an errata found on certain marvell phys concerning the reset of the BMCR phy register during phy reset. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-08-19drivers/net: Remove deprecated use of pci_module_init()Jeff Garzik1-1/+1
From: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-08-08[PATCH] forcdeth: revised NAPI supportStephen Hemminger1-16/+124
Revised version of the forcedeth NAPI support. This version is based against netdev-2.6#upstream (after the MAC patches from Ayaz today). Can't use nv_disable_hw_interrupts because NAPI only wants to mask off receive irq's and leave the others alone. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-08-08[PATCH] forcedeth: mac address correctedAyaz Abdulla1-11/+31
This patch will correct the mac address and set a flag to indicate that it is already corrected in case nv_probe is called again. For example, when you use kexec to restart the kernel. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-08-08[PATCH] forcedeth: move mac address setup/teardownAyaz Abdulla1-15/+14
This patch moves the mac address setup/teardown to the nv_probe/nv_remove functions. This fixes WOL wakeup since on nv_close we would reverse the mac address. Also, bonding driver will reset address after nv_close is called. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-07-29[PATCH] forcedeth: le32 annotationStephen Hemminger1-8/+8
Use __le32 to indicate byte order of hardware ring elements Signed-off-by: Stephen Hemminger <shemminger@osdl.org> drivers/net/forcedeth.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-07-29[PATCH] forcedeth: coding style cleanupsStephen Hemminger1-123/+123
Fix the coding style of the nForce Ethernet driver. - typedef's should not be used - variable names should not be capitialized - structure tags should be lower case - add whitespace near keywords - don't add paren's to switch cases - remove paren's from return - don't use __constant_ntohs unless necessary. Signed-off-by: Stephen Hemminger <shemminger@osdl.org> drivers/net/forcedeth.c | 246 ++++++++++++++++++++++++------------------------ 1 file changed, 123 insertions(+), 123 deletions(-) Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-07-12[PATCH] forcedeth: watermark fixupAyaz Abdulla1-4/+19
This patch defines the watermark registers and fixes up the use of this register. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-07-12[PATCH] forcedeth: deferral fixupAyaz Abdulla1-7/+19
This patch adds the definition for the deferral registers and fixes up the use of these registers. Signed-Off-By: Ayaz Abdulla <aabdulla@nvidia.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-07-08[NET] gso: Add skb_is_gsoHerbert Xu1-1/+1
This patch adds the wrapper function skb_is_gso which can be used instead of directly testing skb_shinfo(skb)->gso_size. This makes things a little nicer and allows us to change the primary key for indicating whether an skb is GSO (if we ever want to do that). Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-07-03[PATCH] lockdep: annotate forcedeth.c disable_irq()Ingo Molnar1-10/+10
nv_do_nic_poll() is called from timer softirqs, which has interrupts enabled, but np->lock might also be taken by some other interrupt context. The driver does disable_irq() to get around this problem, so annotate the disable_irq()/enable_irq() calls for lockdep. Has no effect on non-lockdep kernels. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Ayaz Abdulla <aabdulla@nvidia.com> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-03[PATCH] forcedeth: typecast cleanupAndrew Morton1-4/+4
Someone went nuts in there. Cc: Ayaz Abdulla <aabdulla@nvidia.com> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02[PATCH] irq-flags: drivers/net: Use the new IRQF_ constantsThomas Gleixner1-9/+9
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-23[NET]: Merge TSO/UFO fields in sk_buffHerbert Xu1-2/+2
Having separate fields in sk_buff for TSO/UFO (tso_size/ufo_size) is not going to scale if we add any more segmentation methods (e.g., DCCP). So let's merge them. They were used to tell the protocol of a packet. This function has been subsumed by the new gso_type field. This is essentially a set of netdev feature bits (shifted by 16 bits) that are required to process a specific skb. As such it's easy to tell whether a given device can process a GSO skb: you just have to and the gso_type field and the netdev's features field. I've made gso_type a conjunction. The idea is that you have a base type (e.g., SKB_GSO_TCPV4) that can be modified further to support new features. For example, if we add a hardware TSO type that supports ECN, they would declare NETIF_F_TSO | NETIF_F_TSO_ECN. All TSO packets with CWR set would have a gso_type of SKB_GSO_TCPV4 | SKB_GSO_TCPV4_ECN while all other TSO packets would be SKB_GSO_TCPV4. This means that only the CWR packets need to be emulated in software. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2006-06-22[PATCH] make drivers/net/forcedeth.c:nv_update_pause() staticAdrian Bunk1-1/+1
This patch makes the needlessly global nv_update_pause() static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-06-20[FORCEDETH] Fix xmit_lock/netif_tx_lock after mergeHerbert Xu1-10/+10
There has been an update to the forcedeth driver that added a few new uses of xmit_lock which is no longer meant to be used directly. This patch replaces them with netif_tx_lock_bh. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-19Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds1-9/+9
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (109 commits) [ETHTOOL]: Fix UFO typo [SCTP]: Fix persistent slowdown in sctp when a gap ack consumes rx buffer. [SCTP]: Send only 1 window update SACK per message. [SCTP]: Don't do CRC32C checksum over loopback. [SCTP] Reset rtt_in_progress for the chunk when processing its sack. [SCTP]: Reject sctp packets with broadcast addresses. [SCTP]: Limit association max_retrans setting in setsockopt. [PFKEYV2]: Fix inconsistent typing in struct sadb_x_kmprivate. [IPV6]: Sum real space for RTAs. [IRDA]: Use put_unaligned() in irlmp_do_discovery(). [BRIDGE]: Add support for NETIF_F_HW_CSUM devices [NET]: Add NETIF_F_GEN_CSUM and NETIF_F_ALL_CSUM [TG3]: Convert to non-LLTX [TG3]: Remove unnecessary tx_lock [TCP]: Add tcp_slow_start_after_idle sysctl. [BNX2]: Update version and reldate [BNX2]: Use CPU native page size [BNX2]: Use compressed firmware [BNX2]: Add firmware decompression [BNX2]: Allow WoL settings on new 5708 chips ... Manual fixup for conflict in drivers/net/tulip/winbond-840.c
2006-06-17[NET]: Add netif_tx_lockHerbert Xu1-9/+9
Various drivers use xmit_lock internally to synchronise with their transmission routines. They do so without setting xmit_lock_owner. This is fine as long as netpoll is not in use. With netpoll it is possible for deadlocks to occur if xmit_lock_owner isn't set. This is because if a printk occurs while xmit_lock is held and xmit_lock_owner is not set can cause netpoll to attempt to take xmit_lock recursively. While it is possible to resolve this by getting netpoll to use trylock, it is suboptimal because netpoll's sole objective is to maximise the chance of getting the printk out on the wire. So delaying or dropping the message is to be avoided as much as possible. So the only alternative is to always set xmit_lock_owner. The following patch does this by introducing the netif_tx_lock family of functions that take care of setting/unsetting xmit_lock_owner. I renamed xmit_lock to _xmit_lock to indicate that it should not be used directly. I didn't provide irq versions of the netif_tx_lock functions since xmit_lock is meant to be a BH-disabling lock. This is pretty much a straight text substitution except for a small bug fix in winbond. It currently uses netif_stop_queue/spin_unlock_wait to stop transmission. This is unsafe as an IRQ can potentially wake up the queue. So it is safer to use netif_tx_disable. The hamradio bits used spin_lock_irq but it is unnecessary as xmit_lock must never be taken in an IRQ handler. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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