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2009-08-09SUNRPC: clean up rpc_setup_pipedir()Trond Myklebust
There is still a little wart or two there: Since we've already got a vfsmount, we might as well pass that in to rpc_create_client_dir. Another point is that if we open code __rpc_lookup_path() here, then we can avoid looking up the entire parent directory path over and over again: it doesn't change. Also get rid of rpc_clnt->cl_pathname, since it has no users... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Replace rpc_client->cl_dentry and cl_mnt, with a cl_pathTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Clean up rpc_create_client_dir()Trond Myklebust
Factor out the code that does lookups from the code that actually creates the directory. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Rename rpc_mkdir to rpc_create_client_dir()Trond Myklebust
This reflects the fact that rpc_mkdir() as it stands today, can only create a RPC client type directory. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: rpc_pipefs cleanupTrond Myklebust
Move the files[] array closer to rpc_fill_super() Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Clean up rpc_populate/depopulateTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Clean up rpc_lookup_createTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Clean up rpc_unlink()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Clean up file creation code in rpc_pipefsTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Clean up rpc_pipefs lookup code...Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Allow rpc_pipefs_ops to have null values for upcall and downcallTrond Myklebust
Also ensure that we use the umode_t type when appropriate... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Constify rpc_pipe_ops...Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Add documenting comments in net/sunrpc/timer.cChuck Lever
Clean up: provide documenting comments for the functions in net/sunrpc/timer.c. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Update xprt address strings after an rpcbind completesChuck Lever
After a bind completes, update the transport instance's address strings so debugging messages display the current port the transport is connected to. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Kill RPC_DISPLAY_ALLChuck Lever
At some point, I recall that rpc_pipe_fs used RPC_DISPLAY_ALL. Currently there are no uses of RPC_DISPLAY_ALL outside the transport modules themselves, so we can safely get rid of it. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Rename sock_xprt.addr as sock_xprt.srcaddrChuck Lever
Clean up: Give the "addr" and "port" field less ambiguous names. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Eliminate PROC macro from rpcb_clntChuck Lever
Clean up: Replace PROC macro with open coded C99 structure initializers to improve readability. The rpcbind v4 GETVERSADDR procedure is never sent by the current implementation, so it is not copied to the new structures. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Clean up: Remove unused XDR decoder functions from rpcb_clnt.cChuck Lever
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Introduce new xdr_stream-based decoders to rpcb_clnt.cChuck Lever
Replace the open-coded decode logic for PMAP_GETPORT/RPCB_GETADDR with an xdr_stream-based implementation, similar to what NFSv4 uses, to protect against buffer overflows. The new implementation also checks that the incoming port number is reasonable. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Introduce xdr_stream-based decoders for RPCB_UNSETChuck Lever
Replace the open-coded decode logic for rpcbind UNSET results with an xdr_stream-based implementation, similar to what NFSv4 uses, to protect against buffer overflows. The new function is unused for the moment. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Clean up: Remove unused XDR encoder functions from rpcb_clnt.cChuck Lever
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Introduce new xdr_stream-based encoders to rpcb_clnt.cChuck Lever
Replace the open-coded encode logic for rpcbind arguments with an xdr_stream-based implementation, similar to what NFSv4 uses, to better protect against buffer overflows. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Use rpc_ntop() for constructing transport address stringsChuck Lever
Clean up: In addition to using the new generic rpc_ntop() and rpc_get_port() functions, have the RPC client compute the presentation address buffer sizes dynamically using kstrdup(). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Remove duplicate universal address generationChuck Lever
RPC universal address generation is currently done in several places: rpcb_clnt.c, nfs4proc.c xprtsock.c, and xprtrdma.c. Remove the redundant cases that convert a socket address to a universal address. The nfs4proc.c case takes a pre-formatted presentation address string, not a socket address, so we'll leave that one. Because the new uaddr constructor uses the recently introduced rpc_ntop(), it now supports proper "::" shorthanding for IPv6 addresses. This allows the kernel to register properly formed universal addresses with the local rpcbind service, in _all_ cases. The kernel can now also send properly formed universal addresses in RPCB_GETADDR requests, and support link-local properly when encoding and decoding IPv6 addresses. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Provide functions for managing universal addressesChuck Lever
Introduce a set of functions in the kernel's RPC implementation for converting between a socket address and either a standard presentation address string or an RPC universal address. The universal address functions will be used to encode and decode RPCB_FOO and NFSv4 SETCLIENTID arguments. The other functions are part of a previous promise to deliver shared functions that can be used by upper-layer protocols to display and manipulate IP addresses. The kernel's current address printf formatters were designed specifically for kernel to user-space APIs that require a particular string format for socket addresses, thus are somewhat limited for the purposes of sunrpc.ko. The formatter for IPv6 addresses, %pI6, does not support short-handing or scope IDs. Also, these printf formatters are unique per address family, so a separate formatter string is required for printing AF_INET and AF_INET6 addresses. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: Move XDR data type size macrosChuck Lever
Clean up: To make subsequent patches cleaner, move the XDR data type size macros to the top of the file (similar to nfs4xdr.c) first. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-09SUNRPC: convert some sysctls into module parametersTrond Myklebust
Parameters like the minimum reserved port, and the number of slot entries should really be module parameters rather than sysctls. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-08-07Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: net: Fix spinlock use in alloc_netdev_mq()
2009-08-06Merge branch 'for-linus' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/lowpan/lowpan
2009-08-06irda: Fix irda_getname() leakEric Dumazet
irda_getname() can leak kernel memory to user. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-06appletalk: fix atalk_getname() leakEric Dumazet
atalk_getname() can leak 8 bytes of kernel memory to user Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-06netrom: Fix nr_getname() leakEric Dumazet
nr_getname() can leak kernel memory to user. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-06econet: Fix econet_getname() leakEric Dumazet
econet_getname() can leak kernel memory to user. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-06rose: Fix rose_getname() leakEric Dumazet
rose_getname() can leak kernel memory to user. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-06af_ieee802154: provide dummy get/setsockoptDmitry Eremin-Solenikov
Provide dummt get/setsockopt implementations to stop these syscalls from oopsing on our sockets. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
2009-08-06af_ieee802154: fix ioctl processingDmitry Eremin-Solenikov
fix two errors in ioctl processing: 1) if the ioctl isn't supported one should return -ENOIOCTLCMD 2) don't call ndo_do_ioctl if the device doesn't provide it Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
2009-08-05phonet: phonet_device_get() fixEric Dumazet
net/phonet/pn_dev.c: In function `phonet_device_get': net/phonet/pn_dev.c:99: warning: 'dev' might be used uninitialized in this function Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-05dccp: missing destroy of percpu counter variable while unload moduleWei Yongjun
percpu counter dccp_orphan_count is init in dccp_init() by percpu_counter_init() while dccp module is loaded, but the destroy of it is missing while dccp module is unloaded. We can get the kernel WARNING about this. Reproduct by the following commands: $ modprobe dccp $ rmmod dccp $ modprobe dccp WARNING: at lib/list_debug.c:26 __list_add+0x27/0x5c() Hardware name: VMware Virtual Platform list_add corruption. next->prev should be prev (c080c0c4), but was (null). (next =ca7188cc). Modules linked in: dccp(+) nfsd lockd nfs_acl auth_rpcgss exportfs sunrpc Pid: 1956, comm: modprobe Not tainted 2.6.31-rc5 #55 Call Trace: [<c042f8fa>] warn_slowpath_common+0x6a/0x81 [<c053a6cb>] ? __list_add+0x27/0x5c [<c042f94f>] warn_slowpath_fmt+0x29/0x2c [<c053a6cb>] __list_add+0x27/0x5c [<c053c9b3>] __percpu_counter_init+0x4d/0x5d [<ca9c90c7>] dccp_init+0x19/0x2ed [dccp] [<c0401141>] do_one_initcall+0x4f/0x111 [<ca9c90ae>] ? dccp_init+0x0/0x2ed [dccp] [<c06971b5>] ? notifier_call_chain+0x26/0x48 [<c0444943>] ? __blocking_notifier_call_chain+0x45/0x51 [<c04516f7>] sys_init_module+0xac/0x1bd [<c04028e4>] sysenter_do_call+0x12/0x22 Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-05net: Fix spinlock use in alloc_netdev_mq()Ingo Molnar
-tip testing found this lockdep warning: [ 2.272010] calling net_dev_init+0x0/0x164 @ 1 [ 2.276033] device class 'net': registering [ 2.280191] INFO: trying to register non-static key. [ 2.284005] the code is fine but needs lockdep annotation. [ 2.284005] turning off the locking correctness validator. [ 2.284005] Pid: 1, comm: swapper Not tainted 2.6.31-rc5-tip #1145 [ 2.284005] Call Trace: [ 2.284005] [<7958eb4e>] ? printk+0xf/0x11 [ 2.284005] [<7904f83c>] __lock_acquire+0x11b/0x622 [ 2.284005] [<7908c9b7>] ? alloc_debug_processing+0xf9/0x144 [ 2.284005] [<7904e2be>] ? mark_held_locks+0x3a/0x52 [ 2.284005] [<7908dbc4>] ? kmem_cache_alloc+0xa8/0x13f [ 2.284005] [<7904e475>] ? trace_hardirqs_on_caller+0xa2/0xc3 [ 2.284005] [<7904fdf6>] lock_acquire+0xb3/0xd0 [ 2.284005] [<79489678>] ? alloc_netdev_mq+0xf5/0x1ad [ 2.284005] [<79591514>] _spin_lock_bh+0x2d/0x5d [ 2.284005] [<79489678>] ? alloc_netdev_mq+0xf5/0x1ad [ 2.284005] [<79489678>] alloc_netdev_mq+0xf5/0x1ad [ 2.284005] [<793a38f2>] ? loopback_setup+0x0/0x74 [ 2.284005] [<798eecd0>] loopback_net_init+0x20/0x5d [ 2.284005] [<79483efb>] register_pernet_device+0x23/0x4b [ 2.284005] [<798f5c9f>] net_dev_init+0x115/0x164 [ 2.284005] [<7900104f>] do_one_initcall+0x4a/0x11a [ 2.284005] [<798f5b8a>] ? net_dev_init+0x0/0x164 [ 2.284005] [<79066f6d>] ? register_irq_proc+0x8c/0xa8 [ 2.284005] [<798cc29a>] do_basic_setup+0x42/0x52 [ 2.284005] [<798cc30a>] kernel_init+0x60/0xa1 [ 2.284005] [<798cc2aa>] ? kernel_init+0x0/0xa1 [ 2.284005] [<79003e03>] kernel_thread_helper+0x7/0x10 [ 2.284078] device: 'lo': device_add [ 2.288248] initcall net_dev_init+0x0/0x164 returned 0 after 11718 usecs [ 2.292010] calling neigh_init+0x0/0x66 @ 1 [ 2.296010] initcall neigh_init+0x0/0x66 returned 0 after 0 usecs it's using an zero-initialized spinlock. This is a side-effect of: dev_unicast_init(dev); in alloc_netdev_mq() making use of dev->addr_list_lock. The device has just been allocated freshly, it's not accessible anywhere yet so no locking is needed at all - in fact it's wrong to lock it here (the lock isnt initialized yet). This bug was introduced via: | commit a6ac65db2329e7685299666f5f7b6093c7b0f3a0 | Date: Thu Jul 30 01:06:12 2009 +0000 | | net: restore the original spinlock to protect unicast list Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Jiri Pirko <jpirko@redhat.com> Tested-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-04Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (47 commits) ehea: Fix napi list corruption on ifconfig down igbvf: Allow VF driver to correctly recognize failure to set mac 3c59x: Fix build failure with gcc 3.2 sky2: Avoid transmits during sky2_down() iwlagn: do not send key clear commands when rfkill enabled libertas: Read buffer overflow drivers/net/wireless: introduce missing kfree drivers/net/wireless/iwlwifi: introduce missing kfree zd1211rw: fix unaligned access in zd_mac_rx cfg80211: fix regression on beacon world roaming feature cfg80211: add two missing NULL pointer checks ixgbe: Patch to modify 82598 PCIe completion timeout values bluetooth: rfcomm_init bug fix mlx4_en: Fix double pci unmapping. mISDN: Fix handling of receive buffer size in L1oIP pcnet32: VLB support fixes pcnet32: remove superfluous NULL pointer check in pcnet32_probe1() net: restore the original spinlock to protect unicast list netxen: fix coherent dma mask setting mISDN: Read buffer overflow ...
2009-08-03Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2009-08-03cfg80211: fix regression on beacon world roaming featureLuis R. Rodriguez
A regression was added through patch a4ed90d6: "cfg80211: respect API on orig_flags on channel for beacon hint" We did indeed respect _orig flags but the intention was not clearly stated in the commit log. This patch fixes firmware issues picked up by iwlwifi when we lift passive scan of beaconing restrictions on channels its EEPROM has been configured to always enable. By doing so though we also disallowed beacon hints on devices registering their wiphy with custom world regulatory domains enabled, this happens to be currently ath5k, ath9k and ar9170. The passive scan and beacon restrictions on those devices would never be lifted even if we did find a beacon and the hardware did support such enhancements when world roaming. Since Johannes indicates iwlwifi firmware cannot be changed to allow beacon hinting we set up a flag now to specifically allow drivers to disable beacon hints for devices which cannot use them. We enable the flag on iwlwifi to disable beacon hints and by default enable it for all other drivers. It should be noted beacon hints lift passive scan flags and beacon restrictions when we receive a beacon from an AP on any 5 GHz non-DFS channels, and channels 12-14 on the 2.4 GHz band. We don't bother with channels 1-11 as those channels are allowed world wide. This should fix world roaming for ath5k, ath9k and ar9170, thereby improving scan time when we receive the first beacon from any AP, and also enabling beaconing operation (AP/IBSS/Mesh) on cards which would otherwise not be allowed to do so. Drivers not using custom regulatory stuff (wiphy_apply_custom_regulatory()) were not affected by this as the orig_flags for the channels would have been cleared upon wiphy registration. I tested this with a world roaming ath5k card. Cc: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Reviewed-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-03cfg80211: add two missing NULL pointer checksJohannes Berg
These pointers can be NULL, the is_mesh() case isn't ever hit in the current kernel, but cmp_ies() can be hit under certain conditions. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Cc: stable@kernel.org [2.6.29, 2.6.30] Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-08-03bluetooth: rfcomm_init bug fixDave Young
rfcomm tty may be used before rfcomm_tty_driver initilized, The problem is that now socket layer init before tty layer, if userspace program do socket callback right here then oops will happen. reporting in: http://marc.info/?l=linux-bluetooth&m=124404919324542&w=2 make 3 changes: 1. remove #ifdef in rfcomm/core.c, make it blank function when rfcomm tty not selected in rfcomm.h 2. tune the rfcomm_init error patch to ensure tty driver initilized before rfcomm socket usage. 3. remove __exit for rfcomm_cleanup_sockets because above change need call it in a __init function. Reported-by: Oliver Hartkopp <oliver@hartkopp.net> Tested-by: Oliver Hartkopp <oliver@hartkopp.net> Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-02net: restore the original spinlock to protect unicast listJiri Pirko
There is a path when an assetion in dev_unicast_sync() appears. igmp6_group_added -> dev_mc_add -> __dev_set_rx_mode -> -> vlan_dev_set_rx_mode -> dev_unicast_sync Therefore we cannot protect this list with rtnl. This patch restores the original protecting this list with spinlock. Signed-off-by: Jiri Pirko <jpirko@redhat.com> Tested-by: Meelis Roos <mroos@linux.ee> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-02net: net_assign_generic() fixEric Dumazet
memcpy() should take into account size of pointers, not only number of pointers to copy. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-30ipv4: ARP neigh procfs buffer overflowroel kluin
If arp_format_neigh_entry() can be called with n->dev->addr_len == 0, then a write to hbuffer[-1] occurs. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-30net/netlabel: Add kmalloc NULL testsJulia Lawall
The test on map4 should be a test on map6. The semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression *x; identifier f; constant char *C; @@ x = \(kmalloc\|kcalloc\|kzalloc\)(...); ... when != x == NULL when != x != NULL when != (x || ...) ( kfree(x) | f(...,C,...,x,...) | *f(...,x,...) | *x->f ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Paul Moore <paul.moore@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-30Merge branch 'master' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2009-07-29net-dccp: suppress warning about large allocations from DCCPMel Gorman
The DCCP protocol tries to allocate some large hash tables during initialisation using the largest size possible. This can be larger than what the page allocator can provide so it prints a warning. However, the caller is able to handle the situation so this patch suppresses the warning. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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