summaryrefslogtreecommitdiff
path: root/net/sunrpc/rpcb_clnt.c
AgeCommit message (Collapse)Author
2009-03-28SUNRPC: rpcb_register() should handle errors silentlyChuck Lever
Move error reporting for RPC registration to rpcb_register's caller. This way the caller can choose to recover silently from certain errors, but report errors it does not recognize. Error reporting for kernel RPC service registration is now handled in one place. This patch is part of a series that addresses http://bugzilla.kernel.org/show_bug.cgi?id=12256 Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-03-28SUNRPC: Allow callers to pass rpcb_v4_register a NULL addressChuck Lever
The user space TI-RPC library uses an empty string for the universal address when unregistering all target addresses for [program, version]. The kernel's rpcb client should behave the same way. Here, we are switching between several registration methods based on the protocol family of the incoming address. Rename the other rpcbind v4 registration functions to make it clear that they, as well, are switched on protocol family. In /etc/netconfig, this is either "inet" or "inet6". NB: The loopback protocol families are not supported in the kernel. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-03-28SUNRPC: rpcbind actually interprets r_owner stringChuck Lever
RFC 1833 has little to say about the contents of r_owner; it only specifies that it is a string, and states that it is used to control who can UNSET an entry. Our port of rpcbind (from Sun) assumes this string contains a numeric UID value, not alphabetical or symbolic characters, but checks this value only for AF_LOCAL RPCB_SET or RPCB_UNSET requests. In all other cases, rpcbind ignores the contents of the r_owner string. The reference user space implementation of rpcb_set(3) uses a numeric UID for all SET/UNSET requests (even via the network) and an empty string for all other requests. We emulate that behavior here to maintain bug-for-bug compatibility. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-03-28SUNRPC: Clean up address type casts in rpcb_v4_register()Chuck Lever
Clean up: Simplify rpcb_v4_register() and its helpers by moving the details of sockaddr type casting to rpcb_v4_register()'s helper functions. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-03-28SUNRPC: Use IPv4 loopback for registering AF_INET6 kernel RPC servicesChuck Lever
The kernel uses an IPv6 loopback address when registering its AF_INET6 RPC services so that it can tell whether the local portmapper is actually IPv6-enabled. Since the legacy portmapper doesn't listen on IPv6, however, this causes a long timeout on older systems if the kernel happens to try creating and registering an AF_INET6 RPC service. Originally I wanted to use a connected transport (either TCP or connected UDP) so that the upcall would fail immediately if the portmapper wasn't listening on IPv6, but we never agreed on what transport to use. In the end, it's of little consequence to the kernel whether the local portmapper is listening on IPv6. It's only important whether the portmapper supports rpcbind v4. And the kernel can't tell that at all if it is sending requests via IPv6 -- the portmapper will just ignore them. So, send both rpcbind v2 and v4 SET/UNSET requests via IPv4 loopback to maintain better backwards compatibility between new kernels and legacy user space, and prevent multi-second hangs in some cases when the kernel attempts to register RPC services. This patch is part of a series that addresses http://bugzilla.kernel.org/show_bug.cgi?id=12256 Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2009-03-28SUNRPC: Don't flag empty RPCB_GETADDR reply as bogusChuck Lever
In 2007, commit e65fe3976f594603ed7b1b4a99d3e9b867f573ea added additional sanity checking to rpcb_decode_getaddr() to make sure we were getting a reply that was long enough to be an actual universal address. If the uaddr string isn't long enough, the XDR decoder returns EIO. However, an empty string is a valid RPCB_GETADDR response if the requested service isn't registered. Moreover, "::.n.m" is also a valid RPCB_GETADDR response for IPv6 addresses that is shorter than rpcb_decode_getaddr()'s lower limit of 11. So this sanity check introduced a regression for rpcbind requests against IPv6 remotes. So revert the lower bound check added by commit e65fe3976f594603ed7b1b4a99d3e9b867f573ea, and add an explicit check for an empty uaddr string, similar to libtirpc's rpcb_getaddr(3). Pointed-out-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-31net: replace NIPQUAD() in net/*/Harvey Harrison
Using NIPQUAD() with NIPQUAD_FMT, %d.%d.%d.%d or %u.%u.%u.%u can be replaced with %pI4 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-29net: replace %p6 with %pI6Harvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-28net, misc: replace uses of NIP6_FMT with %p6Harvey Harrison
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-10-15Merge branch 'next'Trond Myklebust
2008-10-07SUNRPC: Fix a memory leak in rpcb_getport_asyncTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-10-07SUNRPC: Fix autobind on cloned rpc clientsTrond Myklebust
Despite the fact that cloned rpc clients won't have the cl_autobind flag set, they may still find themselves calling rpcb_getport_async(). For this to happen, it suffices for a _parent_ rpc_clnt to use autobinding, in which case any clone may find itself triggering the !xprt_bound() case in call_bind(). The correct fix for this is to walk back up the tree of cloned rpc clients, in order to find the parent that 'owns' the transport, either because it has clnt->cl_autobind set, or because it originally created the transport... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-09-29SUNRPC: Clean up debug messages in rpcb_clnt.cChuck Lever
The RPCB XDR functions are used for multiple procedures. For instance, rpcb_encode_getaddr() is used for RPCB_GETADDR, RPCB_SET, and RPCB_UNSET. Make the XDR debug messages more generic so they are less confusing. And, unlike in other RPC consumers in the kernel, a single debug flag enables all levels of debug messages in the RPC bind client, including XDR debug messages. Since the XDR decoders already report success or failure in this case, remove redundant debug messages in the mid-level rpcb_register_call() function. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-09-29SUNRPC: Use short-hand IPv6 ANYADDR for RPCB_SETChuck Lever
Clean up: When doing an RPCB_SET, make the kernel's rpcb client use the shorthand "::" for the universal form of the IPv6 ANY address. Without this patch, rpcbind will advertise: 0000:0000:0000:0000:0000:0000:0000:0000.x.y This is cosmetic only. It cleans up the display of information from /sbin/rpcinfo. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-09-29SUNRPC: Simplify rpcb_register() APIChuck Lever
Bruce suggested there's no need to expose the difference between an error sending the PMAP_SET request and an error reply from the portmapper to rpcb_register's callers. The user space equivalent of rpcb_register() is pmap_set(3), which returns a bool_t : either the PMAP set worked, or it didn't. Simple. So let's remove the "*okay" argument from rpcb_register() and rpcb_v4_register(), and simply return an error if any part of the call didn't work. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
2008-07-15SUNRPC: Support registering IPv6 interfaces with local rpcbind daemonChuck Lever
Introduce a new API to register RPC services on IPv6 interfaces to allow the NFS server and lockd to advertise on IPv6 networks. Unlike rpcb_register(), the new rpcb_v4_register() function uses rpcbind protocol version 4 to contact the local rpcbind daemon. The version 4 SET/UNSET procedures allow services to register address families besides AF_INET, register at specific network interfaces, and register transport protocols besides UDP and TCP. All of this functionality is exposed via the new rpcb_v4_register() kernel API. A user-space rpcbind daemon implementation that supports version 4 of the rpcbind protocol is required in order to make use of this new API. Note that rpcbind version 3 is sufficient to support the new rpcbind facilities listed above, but most extant implementations use version 4. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-15SUNRPC: Refactor rpcb_register to make rpcbindv4 support easierChuck Lever
rpcbind version 4 registration will reuse part of rpcb_register, so just split it out into a separate function now. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-15SUNRPC: None of rpcb_create's callers wants a privileged source portChuck Lever
Clean up: Callers that required a privileged source port now use rpcb_create_local(), so we can remove the @privileged argument from rpcb_create(). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-15SUNRPC: Introduce a specific rpcb_create for contacting localhostChuck Lever
Add rpcb_create_local() for use by rpcb_register() and upcoming IPv6 registration functions. Ensure any errors encountered by rpcb_create_local() are properly reported. We can also use a statically allocated constant loopback socket address instead of one allocated on the stack and initialized every time the function is called. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-15SUNRPC: Use correct XDR encoding procedure for rpcbind SET/UNSETChuck Lever
The rpcbind versions 3 and 4 SET and UNSET procedures use the same arguments as the GETADDR procedure. While definitely a bug, this hasn't been a problem so far since the kernel hasn't used version 3 or 4 SET and UNSET. But this will change in just a moment. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: Ensure our task is notified when an rpcbind call is doneTrond Myklebust
If another task is busy in rpcb_getport_async number, it is more efficient to have it wake us up when it has finished instead of arbitrarily sleeping for 5 seconds. Also ensure that rpcb_wake_rpcbind_waiters() is called regardless of whether or not rpcb_getport_done() gets called. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: Use only rpcbind v2 for AF_INET requestsChuck Lever
Some server vendors support the higher versions of rpcbind only for AF_INET6. The kernel doesn't need to use v3 or v4 for AF_INET anyway, so change the kernel's rpcbind client to query AF_INET servers over rpcbind v2 only. This has a few interesting benefits: 1. If the rpcbind request is going over TCP, and the server doesn't support rpcbind versions 3 or 4, the client reduces by two the number of ephemeral ports left in TIME_WAIT for each rpcbind request. This will help during NFS mount storms. 2. The rpcbind interaction with servers that don't support rpcbind versions 3 or 4 will use less network traffic. Also helpful during mount storms. 3. We can eliminate the kernel build option that controls whether the kernel's rpcbind client uses rpcbind version 3 and 4 for AF_INET servers. Less complicated kernel configuration... Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: Use GETADDR for rpcbind version 4 queriesChuck Lever
Some rpcbind servers that do support rpcbind version 4 do not support the GETVERSADDR procedure. Use GETADDR for querying rpcbind servers via rpcbind version 4 instead of GETVERSADDR. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: Use rpcbind version 2 GETPORTChuck Lever
Clean up: Change the version 2 procedure name to GETPORT. It's the same procedure number as GETADDR, but version 2 implementations usually refer to it as GETPORT. This also now matches the procedure name used in the version 2 procedure entry in the rpcb_next_version[] array, making it slightly less confusing. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: Document some naked integers in rpcbind clientChuck Lever
Clean up: Replace naked integers that represent rpcbind protocol versions. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09SUNRPC: More useful debugging output for rpcb clientChuck Lever
Clean up dprintk's in rpcb client's XDR decoder functions. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-08SUNRPC: Fix an rpcbind breakage for the case of IPv6 lookupsTrond Myklebust
Now that rpcb_next_version has been split into an IPv4 version and an IPv6 version, we Oops when rpcb_call_async attempts to look up the IPv6-specific RPC procedure in rpcb_next_version. Fix the Oops simply by having rpcb_getport_async pass the correct RPC procedure as an argument. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-08SUNRPC: Fix a double-free in rpcbindTrond Myklebust
It is wrong to be freeing up the rpcbind arguments if the call to rpcb_call_async() fails, since they should already have been freed up by rpcb_map_release(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-04-24Merge branch 'devel'Trond Myklebust
2008-03-05net: replace remaining __FUNCTION__ occurrencesHarvey Harrison
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-25SUNRPC: Run rpc timeout functions as callbacks instead of in softirqsTrond Myklebust
An audit of the current RPC timeout functions shows that they don't really ever need to run in the softirq context. As long as the softirq is able to signal that the wakeup is due to a timeout (which it can do by setting task->tk_status to -ETIMEDOUT) then the callback functions can just run as standard task->tk_callback functions (in the rpciod/process context). The only possible border-line case would be xprt_timer() for the case of UDP, when the callback is used to reduce the size of the transport congestion window. In testing, however, the effect of moving that update to a callback would appear to be minor. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-02-01Merge branch 'task_killable' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc * 'task_killable' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc: (22 commits) Remove commented-out code copied from NFS NFS: Switch from intr mount option to TASK_KILLABLE Add wait_for_completion_killable Add wait_event_killable Add schedule_timeout_killable Use mutex_lock_killable in vfs_readdir Add mutex_lock_killable Use lock_page_killable Add lock_page_killable Add fatal_signal_pending Add TASK_WAKEKILL exit: Use task_is_* signal: Use task_is_* sched: Use task_contributes_to_load, TASK_ALL and TASK_NORMAL ptrace: Use task_is_* power: Use task_is_* wait: Use TASK_NORMAL proc/base.c: Use task_is_* proc/array.c: Use TASK_REPORT perfmon: Use task_is_* ... Fixed up conflicts in NFS/sunrpc manually..
2008-01-30SUNRPC: rpcb_getport_sync() passes incorrect address size to rpc_create()Chuck Lever
The variable "sin" is a pointer, so sizeof(sin) is the size of a pointer, not the size of thing that sin points to. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30SUNRPC: Clean up block comment preceding rpcb_getport_sync()Chuck Lever
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30SUNRPC: Use appropriate argument types in rpcb clientChuck Lever
Clean up: Follow recommendations of Chapter 5 of Documentation/CodingStyle and use "u32" instead of "__u32" for types in definitions that are not shared with user space. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30SUNRPC: rpcb_getport_sync() should use built-in hostname generatorChuck Lever
rpc_create() can already fill in the hostname with a string representation of the server's IP address, so remove redundant logic in in rpcb_getport_sync() that does that. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30SUNRPC: Fix up constant string declarations in struct rpcbind_argsTrond Myklebust
...and eliminate an unnecessary cast. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30SUNRPC: fewer conditionals in the format_ip_address routinesChuck Lever
Clean up: have the set up routines explicitly pass the strings to be used for the transport name and NETID. This removes a number of conditionals and dependencies on rpc_xprt.prot, which is overloaded. Tighten up type checking on the address_strings array while we're at it. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30SUNRPC: Move universal address definitions to global headerChuck Lever
Universal addresses are defined in RFC 1833 and clarified in RFC 3530. We need to use them in several places in the NFS and RPC clients, so move the relevant definition and block comment to an appropriate global include file. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30SUNRPC: RPC version numbers are u32Chuck Lever
Clean up: use correct type for RPC version numbers in rpcbind client. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30SUNRPC: Fix socket address handling in rpcb_clntChuck Lever
Make sure rpcb_clnt passes the correct address length to rpc_create(). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30NFS/SUNRPC: Convert all users of rpc_call_setup()Trond Myklebust
Replace use of rpc_call_setup() with rpc_init_task(), and in cases where we need to initialise task->tk_action, with rpc_call_start(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30SUNRPC: Clean up rpc_run_taskTrond Myklebust
Make it use the new task initialiser structure instead of acting as a wrapper. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-12-06NFS: Switch from intr mount option to TASK_KILLABLEMatthew Wilcox
By using the TASK_KILLABLE infrastructure, we can get rid of the 'intr' mount option. We have to use _killable everywhere instead of _interruptible as we get rid of rpc_clnt_sigmask/sigunmask. Signed-off-by: Liam R. Howlett <howlett@gmail.com> Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2007-10-09[2.6 patch] net/sunrpc/rpcb_clnt.c: make struct rpcb_program staticAdrian Bunk
This patch makes the needlessly global struct rpcb_program static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09NFS/SUNRPC: use transport protocol naming\"Talpey, Thomas\
Instead of an { address family, raw IP protocol number }-tuple, use the newly-defined RPC identifier when creating clients in the upper layers. Signed-off-by: Tom Talpey <tmt@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09SUNRPC: add EXPORT_SYMBOL_GPL for generic transport functions\"Talpey, Thomas\
SUNRPC: add EXPORT_SYMBOL_GPL for generic transport functions As a preface to allowing arbitrary transport modules to be loaded dynamically, add EXPORT_SYMBOL_GPL for all generic transport functions that a transport implementation might want to use. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Acked-by: Tom Talpey <tmt@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09SUNRPC: export per-transport rpcbind netid's\"Talpey, Thomas\
The rpcbind (v3+) netid is provided by each RPC client transport. This fixes an omission in IPv6 rpcbind client support, and enables future extension. Signed-off-by: Tom Talpey <tmt@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09SUNRPC: move per-transport rpcbind netid's\"Talpey, Thomas\
Move the TCP/UDP rpcbind netid's from the rpcbind client to a global header. Signed-off-by: Tom Talpey <tmt@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09SUNRPC: Split another new rpcbind retry error code from EACCESChuck Lever
Add more new error code processing to the kernel's rpcbind client and to call_bind_status() to distinguish two cases: Case 1: the remote has replied that the program/version tuple is not registered (returns EACCES) Case 2: retry with a lesser rpcbind version (rpcb now returns EPFNOSUPPORT) This change allows more specific error processing for each of these two cases. We now fail case 2 instead of retrying... it's a server configuration error not to support even rpcbind version 2. And don't expose this new error code to user land -- convert it to EIO before failing the RPC. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-16 03:37:08 +0000