Commit Graph

129 Commits

Author SHA1 Message Date
Paul Saab
250614c5ab FIx for a bug in the change that made nfs_timer() MPSAFE. We need to
grab Giant before calling pru_send() (if running with mpsafenet = 0).

Found by:	Jeremie Le Hen.
Fixed by:	Maxime Henrion
2005-07-27 15:06:26 +00:00
Paul Saab
4321eae6b7 Make nfs_timer() MPSAFE. With this change, the bottom half of the NFS
client (the interface with the protocol stack and callouts) is
Giant-free.

Submitted by:	Mohan Srinivasan.
2005-07-19 21:27:25 +00:00
Paul Saab
38b8570c55 Fix for a NFS soft mounts bug where if the number of retries exceeds
the max rexmits, the request was not being bounced back with a
ETIMEDOUT error.

Reported by:	Oliver Lehmann
Submitted by:	Mohan Srinivasan
2005-07-18 02:12:17 +00:00
Paul Saab
0e38f5365b Fixes for NFS crashes on architectures that require strict alignment.
- Fix nfsm_disct() so that after pulling up data, the remaining data
  is aligned if necessary.
- Fix nfs_clnt_tcp_soupcall() to bcopy() the rpc length out of the
  mbuf (instead of casting m_data to a uint32).

Submitted by:	Pyun YongHyeon
Reviewed by:	Mohan Srinivasan
2005-07-14 20:08:27 +00:00
Jim Rees
3785bdbe7f set R_MUSTRESEND flag in mark_for_reconnect so re-connected requests get
re-sent instead of timing out.

don't log an error message on reconnection, which is not an error.

remove unused nfs_mrep_before_tsleep.

Reviewed by:	Mohan Srinivasan
Approved by:	alfred
2005-05-10 14:25:14 +00:00
Paul Saab
15ec3fe2f0 Fix a bug in NFS/TCP where retransmissions would not reliably happen
if the server rebooted or tore down the connection for any reason.

Found by:	Jonathan Noack.
Submitted by:	Mohan Srinivasan.
2005-05-04 16:37:31 +00:00
Jim Rees
dcee1d0771 TCP reconnect is not an error.
Change the message from LOG_ERR to LOG_INFO.

Approved by:	alfred
2005-04-18 13:42:13 +00:00
Paul Saab
cae2d2c61f - The NFS client was incorrectly masking SIGSTOP (which is
non-maskable).
- The NFS client needs to guard against spurious wakeups
  while waiting for the response. ltrace causes the process
  under question to wakeup (possibly from ptrace()), which
  causes NFS to wakeup from tsleep without the response being
  delivered.

Submitted by:	Mohan Srinivasan
2005-03-23 22:10:10 +00:00
Paul Saab
6ff1ccae7f Minor cleanup in nfs_request() and removal of a comment that doesn't
reflect reality.

Submitted by:	Mohan Srinivasan
2005-02-26 18:55:36 +00:00
Paul Saab
7a5147540a Fix for a potential NFS client race where shared data is updated from
base context as well as the socket callback.

Submitted by:	Mohan Srinivasan
2005-02-18 23:41:39 +00:00
Warner Losh
c398230b64 /* -> /*- for license, minor formatting changes 2005-01-07 01:45:51 +00:00
Paul Saab
b6e223d8d4 If the NFS/TCP stream is out of sync between the client and server,
and if the client (erroneously) reads the RPC length as 0 bytes, the
client can loop around in the socket callback. Explicitly check for
the length being 0 case and teardown/re-connect.

Submitted by:	Mohan Srinivasan
2005-01-05 23:21:13 +00:00
Paul Saab
c10bac25f6 Always issue wakeups() to the NFS requestors under the mutex
to close all potential cases of missed wakeups.

Submitted by:	Mohan Srinivasan mohans at yahoo-inc dot com
2004-12-07 03:39:52 +00:00
Paul Saab
35ec46b7f2 Rewrite of the NFS client's reply handling. We now have NFS socket
upcalls which do RPC header parsing and match up the reply with the
request. NFS calls now sleep on the nfsreq structure. This enables
us to eliminate the NFS recvlock.

Submitted by:	Mohan Srinivasan mohans at yahoo-inc dot com
2004-12-06 21:11:15 +00:00
Robert Watson
640c9dcf69 In nfs_timer(), pass curthread rather than &thread0 into the protocol
send routine.  In IPv6 UDP, the thread will be passed to suser(), which
asserts that if a thread is used for a super user check, it be
curthread.  Many of these protocol entry points probably need to
accept credentials instead of threads.

MT5 candidate.

Noticed/tested by:	kuriyama
2004-08-25 01:23:38 +00:00
Alfred Perlstein
8f0a7125a1 Turn off SO_REUSEADDR and SO_REUSEPORT, they were causing EADDRINUSE
to be returned from the protocol stack.

Pointy hat to me for not groking what those options _really_ mean.
2004-07-13 05:42:59 +00:00
David Malone
dcee93dcf9 Rename Alfred's kern_setsockopt to so_setsockopt, as this seems a
a better name. I have a kern_[sg]etsockopt which I plan to commit
shortly, but the arguments to these function will be quite different
from so_setsockopt.

Approved by:	alfred
2004-07-12 21:42:33 +00:00
Alfred Perlstein
d58d3648dd Use SO_REUSEADDR and SO_REUSEPORT when reconnecting NFS mounts.
Tune the timeout from 5 seconds to 12 seconds.
Provide a sysctl to show how many reconnects the NFS client has done.

Seems to fix IPv6 from: kuriyama
2004-07-12 06:22:42 +00:00
Robert Watson
cf813ab244 Acquire socket lock in nfs_connect() connection/sleep loop to protect
socket state and avoid missed wakeups.
2004-07-06 16:55:41 +00:00
Alfred Perlstein
c713aaaeca NFS mobility PHASE I, II & III (phase VI, and V pending):
Rebind the client socket when we experience a timeout.  This fixes
the case where our IP changes for some reason.

Signal a VFS event when NFS transitions from up to down and vice
versa.

Add a placeholder vfs_sysctl where we will put status reporting
shortly.

Also:
Make down NFS mounts return EIO instead of EINTR when there is a
soft timeout or force unmount in progress.
2004-07-06 09:12:03 +00:00
Robert Watson
7322ba7d8b When updating sb_flags, acquire the socket buffer lock to prevent
races.
2004-06-24 03:12:13 +00:00
Robert Watson
9ef2900f9d Convert GIANT_REQUIRED to NET_ASSERT_GIANT where Giant is used to
protect socket operations.  Leave one "as-is" as it also frobs
rootvp.
2004-06-16 03:12:50 +00:00
Warner Losh
2fcbca0d85 Remove advertising clause from University of California Regent's
license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson
2004-04-07 05:00:01 +00:00
Robert Watson
ecd189d420 Spell 2 as SHUT_RDWR when used as an argument to soshutdown(). 2004-04-04 19:24:08 +00:00
Alexander Kabaev
186c0bc04b Reset callout if in nfs_timeout and rpcclnt_timeout functions. Timer
are supposed to continue firing as long as there is work to do, not
stop after the first invocation.

This is damage control after a patch that has been committed prematurely.

Tested by:	kris
2004-03-28 05:55:27 +00:00
Jim Rees
f9955a5f53 only do nfs rpc callouts if there is work to do.
Submitted by:	kan
Approved by:	alfred
2004-03-25 21:48:09 +00:00
Pawel Jakub Dawidek
512af1646c Add a comment with an explanation why we don't report EPIPE errors on
nfs sockets.

Requested by:	ru
2004-03-17 21:10:20 +00:00
Pawel Jakub Dawidek
41eda4e2b1 Don't report EPIPE errors on nfs sockets. These can be due to idle tcp
mounts which will be closed by netapp, solaris, etc. if left idle too long.

Obtained from:	NetBSD
2004-03-17 18:10:38 +00:00
Alfred Perlstein
1bf8720450 University of Michigan's Citi NFSv4 kernel client code.
Submitted by: Jim Rees <rees@umich.edu>
2003-11-14 20:54:10 +00:00
Sam Leffler
a96756932a Assert GIANT_REQUIRED where sockets are manipulated. This is
preparatory for MPSAFE network commits and ongoing socket
locking work.

Supported by:	FreeBSD Foundation
2003-11-07 22:57:09 +00:00
Jeff Roberson
b2b64a90d2 - Consistently set sopt_dir.
Pointed out by:		pete@isilon.com
2003-10-04 17:41:59 +00:00
John Baldwin
90af4afacb - Merge struct procsig with struct sigacts.
- Move struct sigacts out of the u-area and malloc() it using the
  M_SUBPROC malloc bucket.
- Add a small sigacts_*() API for managing sigacts structures: sigacts_alloc(),
  sigacts_free(), sigacts_copy(), sigacts_share(), and sigacts_shared().
- Remove the p_sigignore, p_sigacts, and p_sigcatch macros.
- Add a mutex to struct sigacts that protects all the members of the struct.
- Add sigacts locking.
- Remove Giant from nosys(), kill(), killpg(), and kern_sigaction() now
  that sigacts is locked.
- Several in-kernel functions such as psignal(), tdsignal(), trapsignal(),
  and thread_stopped() are now MP safe.

Reviewed by:	arch@
Approved by:	re (rwatson)
2003-05-13 20:36:02 +00:00
Jeff Roberson
4093529dee - Move p->p_sigmask to td->td_sigmask. Signal masks will be per thread with
a follow on commit to kern_sig.c
 - signotify() now operates on a thread since unmasked pending signals are
   stored in the thread.
 - PS_NEEDSIGCHK moves to TDF_NEEDSIGCHK.
2003-03-31 22:49:17 +00:00
Alfred Perlstein
cbee8fbe2e req can not be NULL or we'd die.
Sponsored by: RED
2003-03-26 01:46:11 +00:00
Dag-Erling Smørgrav
521f364b80 More low-hanging fruit: kill caddr_t in calls to wakeup(9) / [mt]sleep(9). 2003-03-02 16:54:40 +00:00
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
Peter Wemm
169ade77af Get rid of a silly message I added back in Sept 2001 (1.68). 2003-02-18 23:45:01 +00:00
Tim J. Robbins
1bdd8ae409 Lock proc while accessing p_siglist, p_sigmask and p_sigignore
in nfs_sigintr().
2003-02-15 08:25:57 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
Juli Mallett
1d9c56964d Back our kernel support for reliable signal queues.
Requested by:	rwatson, phk, and many others
2002-10-01 17:15:53 +00:00
Juli Mallett
f4430f22b8 Lock access to the signal queue, and related structures, with PROC_LOCK.
Submitted by:	jhb
2002-09-30 21:15:33 +00:00
Juli Mallett
70d4d0c0f5 Convert use of p_siglist and old SIG*() macros to use <sys/ksiginfo.h>
prototyped functions to get a sigset_t, and further to check for any
queued signals, rather than an empty signal set, to go with the move
to signal queues rather than signal sets.
2002-09-30 20:48:29 +00:00
Poul-Henning Kamp
7ed60de837 Use m_length() instead of home-rolled versions. 2002-09-18 19:44:14 +00:00
Poul-Henning Kamp
7e6fb406ff Now that we have a cached mount credential in struct mount, use it istead
of a private cached copy.
2002-09-08 15:11:18 +00:00
John Baldwin
14d199ad29 If we get a receive error in nfs_receive() and then get an error trying to
obtain the send lock, we would bogusly try to unlock the send lock before
returning resulting in a panic.  Instead, only unlock the send lock if
nfs_sndlock() succeeds and nfs_reconnect() fails.

MFC after:	3 days
Sponsored by:	The Weather Channel
2002-07-16 15:12:07 +00:00
Alfred Perlstein
09ce4f7aaf Add IPv6 support.
Submitted by: Jean-Luc Richier <Jean-Luc.Richier@imag.fr>
2002-07-15 19:40:23 +00:00
Matthew Dillon
3d8f797ac1 Convert old style (type foo *)0 casts to NULLs
PR:		kern/40360
Requested by:	Hiten PAndya via direct email
2002-07-11 17:54:58 +00:00
John Baldwin
56e9ce41a5 In namei(), we use a NULL thread for uio_td when doing a VOP_READLINK().
nfs_readlink() calls nfs_bioread() which passes in uio_td as the thread
argument to nfs_getcacheblk().  In nfs_getcacheblk() we dereference the
thread pointer to get a process pointer to pass to nfs_sigintr().  This
obviously results in a panic. :)

Rather than change nfs_getcacheblk() to check if the thread pointer is
NULL when calling nfs_sigintr() like other callers do, change
nfs_sigintr() to take a thread as the last argument instead of a
process so none of the callers have to care if the thread is NULL or not.
2002-06-28 21:53:08 +00:00
Seigo Tanimura
4cc20ab1f0 Back out my lats commit of locking down a socket, it conflicts with hsu's work.
Requested by:	hsu
2002-05-31 11:52:35 +00:00
Dima Dorfman
ad308c10c7 Don't tsleep() with an sb_mtx held. 2002-05-27 05:20:15 +00:00