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2007-07-10SUNRPC: Give credential cache a local spinlockTrond Myklebust3-14/+38
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Convert the credcache lookup code to use RCUTrond Myklebust3-43/+88
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: cleanup rpc credential cache garbage collectionTrond Myklebust2-49/+73
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Enforce atomic updates of rpc_cred->cr_flagsTrond Myklebust4-25/+27
Convert to the use of atomic bitops... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: replace casts in auth_unix.c with container_of()Trond Myklebust1-4/+6
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Clean up rpc credential initialisationTrond Myklebust3-19/+21
Add a helper rpc_cred_init() Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Mark auth and cred operation tables as constant.Trond Myklebust6-15/+15
Also do the same for gss_api operation tables. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Rename rpcauth_destroy() to rpcauth_release()Trond Myklebust2-3/+3
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Add the helper function 'rpc_call_null()'Trond Myklebust1-0/+10
Does a NULL RPC call and returns a pointer to the resulting rpc_task. The call may be either synchronous or asynchronous. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Make rpc_ping() staticTrond Myklebust1-1/+3
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Fix races in rpcauth_createTrond Myklebust1-11/+24
See the FIXME: auth_flavors[] really needs a lock and module refcounting. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Fix a memory leak in gss_create()Trond Myklebust1-4/+6
Fix a memory leak in gss_create() whereby the rpc credcache was not being freed if the rpc_mkpipe() call failed. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Fix a typo in unx_create()Trond Myklebust1-1/+1
We want to set the unix_cred_cache.nextgc on the first call to unx_create(), which should be when unix_auth.au_count === 1 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Fix a memory leak in the auth credcache codeTrond Myklebust4-5/+20
The leak only affects the RPCSEC_GSS caches, since they are the only ones that are dynamically allocated... Rename the existing rpcauth_free_credcache() to rpcauth_clear_credcache() in order to better describe its role, then add a new function rpcauth_destroy_credcache() that actually frees the cache in addition to clearing it out. Also move the call to destroy the credcache in gss_destroy() to come before the rpc upcall pipe is unlinked. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Add a field to track the number of kernel users of an rpc_pipeTrond Myklebust1-4/+8
This allows us to correctly deduce when we need to remove the pipe. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Clean up rpc_pipefs.Trond Myklebust1-27/+32
Add a dentry_ops with a d_delete() method in order to ensure that dentries are removed as soon as the last reference is gone. Clean up rpc_depopulate() so that it only removes files that were created via rpc_populate(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Enable non-exclusive create in rpc_mkpipe()Trond Myklebust1-4/+14
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Add a downcall queue to struct rpc_inodeTrond Myklebust2-19/+11
Currently, the downcall queue is tied to the struct gss_auth, which means that different RPCSEC_GSS pseudoflavours must use different upcall pipes. Add a list to struct rpc_inode that can be used instead. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Always match an upcall message in gss_pipe_downcall()Trond Myklebust1-31/+27
It used to be possible for an rpc.gssd daemon to stuff the RPC credential cache for any rpc client simply by creating RPCSEC_GSS contexts and then doing downcalls. In practice, no daemons ever made use of this feature. Remove this feature now, since it will be impossible to figure out which mechanism a given context actually matches if we enable more than one gss mechanism to use the same upcall pipe. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Remove the gss_auth spinlockTrond Myklebust1-22/+25
We're just as well off using the inode spinlock instead. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Add a backpointer from the struct rpc_cred to the rpc_authTrond Myklebust3-1/+4
Cleans up an issue whereby rpcsec_gss uses the rpc_clnt->cl_auth. If we want to be able to add several rpc_auths to a single rpc_clnt, then this abuse must go. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: fix hang due to eventd deadlock...Trond Myklebust2-12/+9
Brian Behlendorf writes: The root cause of the NFS hang we were observing appears to be a rare deadlock between the kernel provided usermodehelper API and the linux NFS client. The deadlock can arise because both of these services use the generic linux work queues. The usermodehelper API run the specified user application in the context of the work queue. And NFS submits both cleanup and reconnect work to the generic work queue for handling. Normally this is fine but a deadlock can result in the following situation. - NFS client is in a disconnected state - [events/0] runs a usermodehelper app with an NFS dependent operation, this triggers an NFS reconnect. - NFS reconnect happens to be submitted to [events/0] work queue. - Deadlock, the [events/0] work queue will never process the reconnect because it is blocked on the previous NFS dependent operation which will not complete.` The solution is simply to run reconnect requests on rpciod. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: clean up rpc_call_async/rpc_call_sync/rpc_run_taskTrond Myklebust2-69/+69
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Move rpc_register_client and friends into net/sunrpc/clnt.cTrond Myklebust2-62/+57
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Remove redundant calls to rpciod_up()/rpciod_down()Trond Myklebust1-2/+0
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Make create_client() take a reference to the rpciod workqueueTrond Myklebust2-31/+7
Ensures that an rpc_client always has the possibility to send asynchronous RPC calls. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Optimise rpciod_up()Trond Myklebust1-28/+21
Instead of taking the mutex every time we just need to increment/decrement rpciod_users, we can optmise by using atomic_inc_not_zero and atomic_dec_and_test. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Don't create an rpc_pipefs directory before rpc_clone is initialisedTrond Myklebust1-8/+8
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Remove rpc_clnt->cl_countTrond Myklebust3-19/+3
The kref now does most of what cl_count + cl_user used to do. The only remaining role for cl_count is to tell us if we are in a 'shutdown' phase. We can provide that information using a single bit field instead of a full atomic counter. Also rename rpc_destroy_client() to rpc_close_client(), which reflects better what its role is these days. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Make rpc_clone take a reference instead of using cl_countTrond Myklebust1-2/+2
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Kill rpc_clnt->cl_oneshotTrond Myklebust3-23/+7
Replace it with explicit calls to rpc_shutdown_client() or rpc_destroy_client() (for the case of asynchronous calls). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Kill rpc_clnt->cl_deadTrond Myklebust1-15/+3
Its use is at best racy, and there is only one user (lockd), which has additional locking that makes the whole thing redundant. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Convert rpc_clnt->cl_users to a krefTrond Myklebust3-34/+31
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Clean up tk_pid allocation and make it locklessTrond Myklebust1-7/+15
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Add a per-rpc_clnt spinlockTrond Myklebust2-20/+29
Use that to protect the rpc_clnt->cl_tasks list instead of using a global lock. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10SUNRPC: Move rpc_task->tk_task list into struct rpc_clntTrond Myklebust2-43/+79
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10NFSv4: Clean up nfs4_call_async()Trond Myklebust1-1/+0
Use rpc_run_task() instead of doing it ourselves. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6Linus Torvalds1-0/+3
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (40 commits) bonding/bond_main.c: make 2 functions static ps3: gigabit ethernet driver for PS3, take3 [netdrvr] Fix dependencies for ax88796 ne2k clone driver eHEA: Capability flag for DLPAR support Remove sk98lin ethernet driver. sunhme.c:quattro_pci_find() must be __devinit bonding / ipv6: no addrconf for slaves separately from master atl1: remove write-only var in tx handler macmace: use "unsigned long flags;" Cleanup usbnet_probe() return value handling netxen: deinline and sparse fix eeprom_93cx6: shorten pulse timing to match spec (bis) phylib: Add Marvell 88E1112 phy id phylib: cleanup marvell.c a bit AX88796 network driver IOC3: Switch to pci refcounting safe APIs e100: Fix Tyan motherboard e100 not receiving IPMI commands QE Ethernet driver writes to wrong register to mask interrupts rrunner.c:rr_init() must be __devinit tokenring/3c359.c:xl_init() must be __devinit ...
2007-07-10bonding / ipv6: no addrconf for slaves separately from masterJay Vosburgh1-0/+3
At present, when a device is enslaved to bonding, if ipv6 is active then addrconf will be initated on the slave (because it is closed then opened during the enslavement processing). This causes DAD and RS packets to be sent from the slave. These packets in turn can confuse switches that perform ipv6 snooping, causing them to incorrectly update their forwarding tables (if, e.g., the slave being added is an inactve backup that won't be used right away) and direct traffic away from the active slave to a backup slave (where the incoming packets will be dropped). This patch alters the behavior so that addrconf will only run on the master device itself. I believe this is logically correct, as it prevents slaves from having an IPv6 identity independent from the master. This is consistent with the IPv4 behavior for bonding. This is accomplished by (a) having bonding set IFF_SLAVE sooner in the enslavement processing than currently occurs (before open, not after), and (b) having ipv6 addrconf ignore UP and CHANGE events on slave devices. The eql driver also uses the IFF_SLAVE flag. I inspected eql, and I believe this change is reasonable for its usage of IFF_SLAVE, but I did not test it. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-07-10sendfile: convert nfsd to splice_direct_to_actor()Jens Axboe2-2/+2
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-07-08[PATCH] softmac: use list_for_each_entryAkinobu Mita1-21/+11
Cleanup using list_for_each_entry. Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Joe Jezak <josejx@gentoo.org> Cc: Daniel Drake <dsd@gentoo.org> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-07-07Fix use-after-free oops in Bluetooth HID.David Woodhouse1-9/+9
When cleaning up HIDP sessions, we currently close the ACL connection before deregistering the input device. Closing the ACL connection schedules a workqueue to remove the associated objects from sysfs, but the input device still refers to them -- and if the workqueue happens to run before the input device removal, the kernel will oops when trying to look up PHYSDEVPATH for the removed input device. Fix this by deregistering the input device before closing the connections. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-05[NETPOLL]: Fixups for 'fix soft lockup when removing module'Jarek Poplawski1-4/+2
>From my recent patch: > > #1 > > Until kernel ver. 2.6.21 (including) cancel_rearming_delayed_work() > > required a work function should always (unconditionally) rearm with > > delay > 0 - otherwise it would endlessly loop. This patch replaces > > this function with cancel_delayed_work(). Later kernel versions don't > > require this, so here it's only for uniformity. But Oleg Nesterov <oleg@tv-sign.ru> found: > But 2.6.22 doesn't need this change, why it was merged? > > In fact, I suspect this change adds a race, ... His description was right (thanks), so this patch reverts #1. Signed-off-by: Jarek Poplawski <jarkao2@o2.pl> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-05[NET]: net/core/netevent.c should #include <net/netevent.h>Adrian Bunk1-0/+1
Every file should include the headers containing the prototypes for its global functions. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-05[NETFILTER]: nf_conntrack_h323: add checking of out-of-range on choices' index valuesJing Min Zhao1-1/+3
Choices' index values may be out of range while still encoded in the fixed length bit-field. This bug may cause access to undefined types (NULL pointers) and thus crashes (Reported by Zhongling Wen). This patch also adds checking of decode flag when decoding SEQUENCEs. Signed-off-by: Jing Min Zhao <zhaojingmin@vivecode.com> Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-05[NET] skbuff: remove export of static symbolJohannes Berg1-1/+0
skb_clone_fraglist is static so it shouldn't be exported. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-05SCTP: Add scope_id validation for link-local bindsVlad Yasevich1-0/+4
SCTP currently permits users to bind to link-local addresses, but doesn't verify that the scope id specified at bind matches the interface that the address is configured on. It was report that this can hang a system. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-05SCTP: Check to make sure file is valid before setting timeoutVlad Yasevich1-1/+9
In-kernel sockets created with sock_create_kern don't usually have a file and file descriptor allocated to them. As a result, when SCTP tries to check the non-blocking flag, we Oops when dereferencing a NULL file pointer. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-05SCTP: Fix thinko in sctp_copy_laddrs()Vlad Yasevich1-1/+1
Correctly dereference bytes_copied in sctp_copy_laddrs(). I totally must have spaced when doing this. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-06-28[NETPOLL] netconsole: fix soft lockup when removing moduleJarek Poplawski1-2/+9
#1 Until kernel ver. 2.6.21 (including) cancel_rearming_delayed_work() required a work function should always (unconditionally) rearm with delay > 0 - otherwise it would endlessly loop. This patch replaces this function with cancel_delayed_work(). Later kernel versions don't require this, so here it's only for uniformity. #2 After deleting a timer in cancel_[rearming_]delayed_work() there could stay a last skb queued in npinfo->txq causing a memory leak after kfree(npinfo). Initial patch & testing by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Jarek Poplawski <jarkao2@o2.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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