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path: root/drivers/net/ibmveth.c
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2007-06-09ibmveth: Automatically enable larger rx buffer pools for larger mtuBrian King
Currently, ibmveth maintains several rx buffer pools, which can be modified through sysfs. By default, pools are not allocated by default such that jumbo frames cannot be supported without first activating larger rx buffer pools. This results in failures when attempting to change the mtu. This patch makes ibmveth automatically allocate these larger buffer pools when the mtu is changed. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-06-09ibmveth: Fix h_free_logical_lan error on pool resizeBrian King
When attempting to activate additional rx buffer pools on an ibmveth interface that was not yet up, the error below was seen. The patch fixes this by only closing and opening the interface to activate the resize if the interface is already opened. (drivers/net/ibmveth.c:597 ua:30000004) ERROR: h_free_logical_lan failed with fffffffffffffffc, continuing with close Unable to handle kernel paging request for data at address 0x00000ff8 Faulting instruction address: 0xd0000000002540e0 Oops: Kernel access of bad area, sig: 11 [#1] SMP NR_CPUS=128 NUMA PSERIES LPAR Modules linked in: ip6t_REJECT xt_tcpudp ipt_REJECT xt_state iptable_mangle ipta ble_nat ip_nat iptable_filter ip6table_mangle ip_conntrack nfnetlink ip_tables i p6table_filter ip6_tables x_tables ipv6 apparmor aamatch_pcre loop dm_mod ibmvet h sg ibmvscsic sd_mod scsi_mod NIP: D0000000002540E0 LR: D0000000002540D4 CTR: 80000000001AF404 REGS: c00000001cd27870 TRAP: 0300 Not tainted (2.6.16.46-0.4-ppc64) MSR: 8000000000009032 <EE,ME,IR,DR> CR: 24242422 XER: 00000007 DAR: 0000000000000FF8, DSISR: 0000000040000000 TASK = c00000001ca7b4e0[1636] 'sh' THREAD: c00000001cd24000 CPU: 0 GPR00: D0000000002540D4 C00000001CD27AF0 D000000000265650 C00000001C936500 GPR04: 8000000000009032 FFFFFFFFFFFFFFFF 0000000000000007 000000000002C2EF GPR08: FFFFFFFFFFFFFFFF 0000000000000000 C000000000652A10 C000000000652AE0 GPR12: 0000000000004000 C0000000004A3300 00000000100A0000 0000000000000000 GPR16: 00000000100B8808 00000000100C0F60 0000000000000000 0000000010084878 GPR20: 0000000000000000 00000000100C0CB0 00000000100AF498 0000000000000002 GPR24: 00000000100BA488 C00000001C936760 D000000000258DD0 C00000001C936000 GPR28: 0000000000000000 C00000001C936500 D000000000265180 C00000001C936000 NIP [D0000000002540E0] .ibmveth_close+0xc8/0xf4 [ibmveth] LR [D0000000002540D4] .ibmveth_close+0xbc/0xf4 [ibmveth] Call Trace: [C00000001CD27AF0] [D0000000002540D4] .ibmveth_close+0xbc/0xf4 [ibmveth] (unreliable) [C00000001CD27B80] [D0000000002545FC] .veth_pool_store+0xd0/0x260 [ibmveth] [C00000001CD27C40] [C00000000012E0E8] .sysfs_write_file+0x118/0x198 [C00000001CD27CF0] [C0000000000CDAF0] .vfs_write+0x130/0x218 [C00000001CD27D90] [C0000000000CE52C] .sys_write+0x4c/0x8c [C00000001CD27E30] [C00000000000871C] syscall_exit+0x0/0x40 Instruction dump: 419affd8 2fa30000 419e0020 e93d0000 e89e8040 38a00255 e87e81b0 80c90018 48001531 e8410028 e93d00e0 7fa3eb78 <e8090ff8> f81d0430 4bfffdc9 38210090 Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28Fix sparse errors in drivers/net/ibmveth.cMichael Ellerman
drivers/net/ibmveth.c:96:46: error: marked inline, but without a definition drivers/net/ibmveth.c:96: warning: 'ibmveth_rxq_harvest_buffer' declared inline after being called drivers/net/ibmveth.c:96: warning: previous declaration of 'ibmveth_rxq_harvest_buffer' was here Just let the compiler decide, as it happens gcc 4.~ inlines it anyway. drivers/net/ibmveth.c:957:71: warning: Using plain integer as NULL pointer drivers/net/ibmveth.c:964:85: warning: Using plain integer as NULL pointer Split the long lines as well, ugly, but < 80 columns. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-25[ETH]: Make eth_type_trans set skb->dev like the other *_type_transArnaldo Carvalho de Melo
One less thing for drivers writers to worry about. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-02-12[PATCH] mark struct file_operations const 5Arjan van de Ven
Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2006-12-04[PATCH] ibmveth: Remove ibmveth "liobn" fieldBenjamin Herrenschmidt
Remove the now unused "liobn" field in ibmveth which also avoids having insider knowledge of the iommu table in that driver. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-10-21[PATCH] ibmveth: Fix index increment calculationDavid Gibson
The recent commit 751ae21c6cd1493e3d0a4935b08fb298b9d89773 introduced a bug in the producer/consumer index calculation in the ibmveth driver - incautious use of the post-increment ++ operator resulted in an increment being immediately reverted. This patch corrects the logic. Without this patch, the driver oopses almost immediately after activation on at least some machines. Signed-off-by: David Gibson <dwg@au1.ibm.com> Acked-by: Santiago Leon <santil@us.ibm.com> Cc: Jeff Garzik <jeff@garzik.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11[PATCH] ibmveth irq fixAndrew Morton
drivers/net/ibmveth.c:939: error: too many arguments to function `ibmveth_interrupt' Cc: Jeff Garzik <jeff@garzik.org> Cc: Anton Blanchard <anton@samba.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-11Merge branch 'master' into upstream-fixesJeff Garzik
2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells
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] ibmveth: fix int rollover panicSantiago Leon
This patch fixes a nasty bug that has been sitting there since the very first versions of the driver, but is generating a panic because we changed the number of 2K buffers for 2.6.16. The consumer_index and producer_index are u32's that get incremented on every buffer emptied and replenished respectively. We use the {producer,consumer}_index mod'ed with the size of the pool to pick out an entry in the free_map. The problem happens when the u32 rolls over and the number of the buffers in the pool is not a perfect divisor of 2^32. i.e. if the number of 2K buffers is 0x300, before the consumer_index rolls over, our index to the free map = 0xffffffff mod 0x300 = 0xff. The next time a buffer is emptied, we want the index to the free map to be 0x100, but 0x0 mod 0x300 is 0x0. This patch assigns the mod'ed result back to the consumer and producer indexes so that they never roll over. The second chunk of the patch covers the unlikely case where the consumer_index has just been reset to 0x0 and the hypervisor is not able to accept that buffer. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-05[PATCH] ibmveth: rename proc entry nameSantiago Leon
This patch changes the name of the proc file for each ibmveth adapter from the network device name to the slot number in the virtual bus. The proc file is created when the device is probed, so a change in the name of the device will not be reflected in the name of the proc file giving problems when identifying and removing the adapter. The slot number is a property that does not change through the life of the adapter so we use that instead. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-05[PATCH] ibmveth: kdump interrupt fixSantiago Leon
This patch fixes a race that panics the kernel when opening the device after a kdump. Without this patch there is a window where the hypervisor can send an interrupt before all the structures for the kdump ibmveth module are ready (because the hypervisor is not aware that the partition crashed and that the virtual driver is reloading). We close this window by disabling the interrupts before registering the adapter to the hypervisor. This patch depends on the "ibmveth: Harden driver initilisation" patch. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-05[PATCH] ibmveth: Add netpoll functionSantiago Leon
This patch adds the net poll controller function to ibmveth to support netconsole and netdump. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-10-05[PATCH] ibmveth: Harden driver initilisationMichael Ellerman
This patch has been floating around for a while now, Santi originally sent it in March: http://www.spinics.net/lists/netdev/msg00471.html After a kexec the ibmveth driver will fail when trying to register with the Hypervisor because the previous kernel has not unregistered. So if the registration fails, we unregister and then try again. We don't unconditionally unregister, because we don't want to disturb the regular code path for 99% of users. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Acked-by: Anton Blanchard <anton@samba.org> Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-09-22Merge branch 'master' into upstreamJeff Garzik
Conflicts: net/ieee80211/ieee80211_crypt_tkip.c net/ieee80211/ieee80211_crypt_wep.c
2006-09-13drivers/net: const-ify ethtool_ops declarationsJeff Garzik
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-08-01[POWERPC] clean up pseries hcall interfacesAnton Blanchard
Our pseries hcall interfaces are out of control: plpar_hcall_norets plpar_hcall plpar_hcall_8arg_2ret plpar_hcall_4out plpar_hcall_7arg_7ret plpar_hcall_9arg_9ret Create 3 interfaces to cover all cases: plpar_hcall_norets: 7 arguments no returns plpar_hcall: 6 arguments 4 returns plpar_hcall9: 9 arguments 9 returns There are only 2 cases in the kernel that need plpar_hcall9, hopefully we can keep it that way. Pass in a buffer to stash return parameters so we avoid the &dummy1, &dummy2 madness. Signed-off-by: Anton Blanchard <anton@samba.org> -- Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpcLinus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (139 commits) [POWERPC] re-enable OProfile for iSeries, using timer interrupt [POWERPC] support ibm,extended-*-frequency properties [POWERPC] Extra sanity check in EEH code [POWERPC] Dont look for class-code in pci children [POWERPC] Fix mdelay badness on shared processor partitions [POWERPC] disable floating point exceptions for init [POWERPC] Unify ppc syscall tables [POWERPC] mpic: add support for serial mode interrupts [POWERPC] pseries: Print PCI slot location code on failure [POWERPC] spufs: one more fix for 64k pages [POWERPC] spufs: fail spu_create with invalid flags [POWERPC] spufs: clear class2 interrupt status before wakeup [POWERPC] spufs: fix Makefile for "make clean" [POWERPC] spufs: remove stop_code from struct spu [POWERPC] spufs: fix spu irq affinity setting [POWERPC] spufs: further abstract priv1 register access [POWERPC] spufs: split the Cell BE support into generic and platform dependant parts [POWERPC] spufs: dont try to access SPE channel 1 count [POWERPC] spufs: use kzalloc in create_spu [POWERPC] spufs: fix initial state of wbox file ... Manually resolved conflicts in: drivers/net/phy/Makefile include/asm-powerpc/spu.h
2006-05-24[netdrvr ibmlana, ibmveth] trim trailing whitespaceJeff Garzik
2006-05-24[PATCH] ibmveth change buffer pools dynamicallySantiago Leon
This patch provides a sysfs interface to change some properties of the ibmveth buffer pools (size of the buffers, number of buffers per pool, and whether a pool is active). Ethernet drivers use ethtool to provide this type of functionality. However, the buffers in the ibmveth driver can have an arbitrary size (not only regular, mini, and jumbo which are the only sizes that ethtool can change), and also ibmveth can have an arbitrary number of buffer pools Under heavy load we have seen dropped packets which obviously kills TCP performance. We have created several fixes that mitigate this issue, but we definitely need a way of changing the number of buffers for an adapter dynamically. Also, changing the size of the buffers allows users to change the MTU to something big (bigger than a jumbo frame) greatly improving performance on partition to partition transfers. The patch creates directories pool1...pool4 in the device directory in sysfs, each with files: num, size, and active (which default to the values in the mainline version). Comments and suggestions are welcome... -- Santiago A. Leon Power Linux Development IBM Linux Technology Center Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-22[PATCH] powerpc: Quiet VETH version printkOlof Johansson
ibmveth_printk() is only used to print the driver version when the module initializes, which means on all machines as long as it's compiled in. If it's really only needed for debugging, boot with loglevel=8, or get it from dmesg instead. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-04-01[PATCH] powerpc/pseries: Change H_StudlyCaps to H_SHOUTING_CAPSSegher Boessenkool
Also cleans up some nearby whitespace problems. Signed-off-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-11[PATCH] disable DEBUG in ibmvethAnton Blanchard
At the moment ibmveth has DEBUG enabled which is rather verbose. Disable it. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-11-09[PATCH] changing CONFIG_LOCALVERSION rebuilds too much, for no good reasonOlaf Hering
This patch removes almost all inclusions of linux/version.h. The 3 #defines are unused in most of the touched files. A few drivers use the simple KERNEL_VERSION(a,b,c) macro, which is unfortunatly in linux/version.h. There are also lots of #ifdef for long obsolete kernels, this was not touched. In a few places, the linux/version.h include was move to where the LINUX_VERSION_CODE was used. quilt vi `find * -type f -name "*.[ch]"|xargs grep -El '(UTS_RELEASE|LINUX_VERSION_CODE|KERNEL_VERSION|linux/version.h)'|grep -Ev '(/(boot|coda|drm)/|~$)'` search pattern: /UTS_RELEASE\|LINUX_VERSION_CODE\|KERNEL_VERSION\|linux\/\(utsname\|version\).h Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-01[PATCH] ibmveth fix panic in initial replenish cycleSantiago Leon
This patch fixes a panic in the current tree caused by a race condition between the initial replenish cycle and the rx processing of the first packets trying to replenish the buffers. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-31Merge ../linux-2.6 by handPaul Mackerras
2005-10-28drivers/net: Remove pointless checks for NULL prior to calling kfree()Jesper Juhl
2005-10-28[PATCH] ibmveth fix failed addbufSantiago Leon
This patch fixes a bug that happens when the hypervisor can't add a buffer. The old code wrote IBM_VETH_INVALID_MAP into the free_map array, so next time the index was used, a ibmveth_assert() caught it and called BUG(). The patch writes the right value into the free_map array so that the index can be reused. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-10-28[PATCH] ibmveth lockless TXSantiago Leon
This patch adds the lockless TX feature to the ibmveth driver. The hypervisor has its own locking so the only change that is necessary is to protect the statistics counters. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-10-28[PATCH] ibmveth fix buffer replenishingSantiago Leon
This patch removes the allocation of RX skb's buffers from a workqueue to be called directly at RX processing time. This change was suggested by Dave Miller when the driver was starving the RX buffers and deadlocking under heavy traffic: > Allocating RX SKBs via tasklet is, IMHO, the worst way to > do it. It is no surprise that there are starvation cases. > > If tasklets or work queues get delayed in any way, you lose, > and it's very easy for a card to catch up with the driver RX'ing > packets very fast, no matter how aggressive you make the > replenishing. By the time you detect that you need to be > "more aggressive" it is already too late. > The only pseudo-reliable way is to allocate at RX processing time. > Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-10-28[PATCH] ibmveth fix buffer pool managementSantiago Leon
This patch changes the way the ibmveth driver handles the receive buffers. The old code mallocs and maps all the buffers in the pools regardless of MTU size and it also limits the number of buffer pools to three. This patch makes the driver malloc and map the buffers necessary to support the current MTU. It also changes the hardcoded names of the buffer pool number, size, and elements to arrays to make it easier to change (with the hope of making them runtime parameters in the future). Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-10-28[PATCH] ibmveth fix bondingSantiago Leon
This patch updates dev->trans_start and dev->last_rx so that the ibmveth driver can be used with the ARP monitor in the bonding driver. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-10-27[PATCH] ppc64: make dma_addr_t 64 bitsStephen Rothwell
There has been a need expressed for dma_addr_t to be 64 bits on PPC64. This patch does that. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-10-24powerpc: set the driver.owner field for all vio driversStephen Rothwell
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-10-24powerpc: don't duplicate name between vio_driver and device_driverStephen Rothwell
Just set the name field directly in the device_driver structure contained in the vio_driver struct. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
2005-09-29[PATCH] proc_mkdir() should be used to create procfs directoriesAl Viro
A bunch of create_proc_dir_entry() calls creating directories had crept in since the last sweep; converted to proc_mkdir(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-08-30[PATCH] Make MODULE_DEVICE_TABLE work for vio devicesStephen Rothwell
Make MODULE_DEVICE_TABLE work for vio devices. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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