2005-04-16 16:20:36 -06:00
|
|
|
/*
|
|
|
|
* linux/fs/nfs/callback_proc.c
|
|
|
|
*
|
|
|
|
* Copyright (C) 2004 Trond Myklebust
|
|
|
|
*
|
|
|
|
* NFSv4 callback procedures
|
|
|
|
*/
|
|
|
|
#include <linux/nfs4.h>
|
|
|
|
#include <linux/nfs_fs.h>
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 02:04:11 -06:00
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#include <linux/slab.h>
|
2012-03-01 15:00:56 -07:00
|
|
|
#include <linux/rcupdate.h>
|
2005-06-22 11:16:21 -06:00
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#include "nfs4_fs.h"
|
2005-04-16 16:20:36 -06:00
|
|
|
#include "callback.h"
|
|
|
|
#include "delegation.h"
|
2006-08-22 18:06:10 -06:00
|
|
|
#include "internal.h"
|
2011-01-06 04:36:30 -07:00
|
|
|
#include "pnfs.h"
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-12-10 12:57:23 -07:00
|
|
|
#ifdef NFS_DEBUG
|
2005-04-16 16:20:36 -06:00
|
|
|
#define NFSDBG_FACILITY NFSDBG_CALLBACK
|
2007-12-10 12:57:23 -07:00
|
|
|
#endif
|
2011-01-05 19:04:32 -07:00
|
|
|
|
|
|
|
__be32 nfs4_callback_getattr(struct cb_getattrargs *args,
|
|
|
|
struct cb_getattrres *res,
|
|
|
|
struct cb_process_state *cps)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
struct nfs_delegation *delegation;
|
|
|
|
struct nfs_inode *nfsi;
|
|
|
|
struct inode *inode;
|
2007-12-10 12:57:23 -07:00
|
|
|
|
2011-01-05 19:04:32 -07:00
|
|
|
res->status = htonl(NFS4ERR_OP_NOT_IN_SESSION);
|
|
|
|
if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */
|
|
|
|
goto out;
|
|
|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
res->bitmap[0] = res->bitmap[1] = 0;
|
|
|
|
res->status = htonl(NFS4ERR_BADHANDLE);
|
2007-12-10 12:57:23 -07:00
|
|
|
|
2012-03-01 15:00:56 -07:00
|
|
|
dprintk_rcu("NFS: GETATTR callback request from %s\n",
|
2011-01-05 19:04:32 -07:00
|
|
|
rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
|
2007-12-10 12:57:23 -07:00
|
|
|
|
2011-01-05 19:04:32 -07:00
|
|
|
inode = nfs_delegation_find_inode(cps->clp, &args->fh);
|
2005-04-16 16:20:36 -06:00
|
|
|
if (inode == NULL)
|
2011-01-05 19:04:32 -07:00
|
|
|
goto out;
|
2005-04-16 16:20:36 -06:00
|
|
|
nfsi = NFS_I(inode);
|
2010-08-04 07:29:52 -06:00
|
|
|
rcu_read_lock();
|
|
|
|
delegation = rcu_dereference(nfsi->delegation);
|
2005-04-16 16:20:36 -06:00
|
|
|
if (delegation == NULL || (delegation->type & FMODE_WRITE) == 0)
|
|
|
|
goto out_iput;
|
|
|
|
res->size = i_size_read(inode);
|
2006-01-03 01:55:37 -07:00
|
|
|
res->change_attr = delegation->change_attr;
|
|
|
|
if (nfsi->npages != 0)
|
|
|
|
res->change_attr++;
|
2005-04-16 16:20:36 -06:00
|
|
|
res->ctime = inode->i_ctime;
|
|
|
|
res->mtime = inode->i_mtime;
|
|
|
|
res->bitmap[0] = (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) &
|
|
|
|
args->bitmap[0];
|
|
|
|
res->bitmap[1] = (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) &
|
|
|
|
args->bitmap[1];
|
|
|
|
res->status = 0;
|
|
|
|
out_iput:
|
2010-08-04 07:29:52 -06:00
|
|
|
rcu_read_unlock();
|
2005-04-16 16:20:36 -06:00
|
|
|
iput(inode);
|
|
|
|
out:
|
2008-05-02 14:42:44 -06:00
|
|
|
dprintk("%s: exit with status = %d\n", __func__, ntohl(res->status));
|
2005-04-16 16:20:36 -06:00
|
|
|
return res->status;
|
|
|
|
}
|
|
|
|
|
2011-01-05 19:04:32 -07:00
|
|
|
__be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy,
|
|
|
|
struct cb_process_state *cps)
|
2005-04-16 16:20:36 -06:00
|
|
|
{
|
|
|
|
struct inode *inode;
|
2006-10-20 00:28:50 -06:00
|
|
|
__be32 res;
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2011-01-05 19:04:32 -07:00
|
|
|
res = htonl(NFS4ERR_OP_NOT_IN_SESSION);
|
|
|
|
if (!cps->clp) /* Always set for v4.0. Set in cb_sequence for v4.1 */
|
2005-04-16 16:20:36 -06:00
|
|
|
goto out;
|
2007-12-10 12:57:23 -07:00
|
|
|
|
2012-03-01 15:00:56 -07:00
|
|
|
dprintk_rcu("NFS: RECALL callback request from %s\n",
|
2011-01-05 19:04:32 -07:00
|
|
|
rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
|
|
|
|
|
|
|
|
res = htonl(NFS4ERR_BADHANDLE);
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|
|
|
inode = nfs_delegation_find_inode(cps->clp, &args->fh);
|
|
|
|
if (inode == NULL)
|
|
|
|
goto out;
|
|
|
|
/* Set up a helper thread to actually return the delegation */
|
|
|
|
switch (nfs_async_inode_return_delegation(inode, &args->stateid)) {
|
|
|
|
case 0:
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|
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|
res = 0;
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|
|
|
break;
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|
|
|
case -ENOENT:
|
2012-03-04 16:13:56 -07:00
|
|
|
res = htonl(NFS4ERR_BAD_STATEID);
|
2011-01-05 19:04:32 -07:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
res = htonl(NFS4ERR_RESOURCE);
|
|
|
|
}
|
|
|
|
iput(inode);
|
2005-04-16 16:20:36 -06:00
|
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|
out:
|
2008-05-02 14:42:44 -06:00
|
|
|
dprintk("%s: exit with status = %d\n", __func__, ntohl(res));
|
2005-04-16 16:20:36 -06:00
|
|
|
return res;
|
|
|
|
}
|
2009-04-01 07:23:25 -06:00
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|
|
|
|
|
|
#if defined(CONFIG_NFS_V4_1)
|
|
|
|
|
2012-01-22 07:03:39 -07:00
|
|
|
/*
|
|
|
|
* Lookup a layout by filehandle.
|
|
|
|
*
|
|
|
|
* Note: gets a refcount on the layout hdr and on its respective inode.
|
|
|
|
* Caller must put the layout hdr and the inode.
|
|
|
|
*
|
|
|
|
* TODO: keep track of all layouts (and delegations) in a hash table
|
|
|
|
* hashed by filehandle.
|
|
|
|
*/
|
|
|
|
static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp, struct nfs_fh *fh)
|
2011-01-06 04:36:30 -07:00
|
|
|
{
|
2011-06-01 14:44:44 -06:00
|
|
|
struct nfs_server *server;
|
2011-01-06 04:36:30 -07:00
|
|
|
struct inode *ino;
|
2012-01-22 07:03:39 -07:00
|
|
|
struct pnfs_layout_hdr *lo;
|
2011-01-06 04:36:30 -07:00
|
|
|
|
2011-06-01 14:44:44 -06:00
|
|
|
list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
|
|
|
|
list_for_each_entry(lo, &server->layouts, plh_layouts) {
|
2012-01-22 07:03:39 -07:00
|
|
|
if (nfs_compare_fh(fh, &NFS_I(lo->plh_inode)->fh))
|
2011-06-01 14:44:44 -06:00
|
|
|
continue;
|
|
|
|
ino = igrab(lo->plh_inode);
|
|
|
|
if (!ino)
|
|
|
|
continue;
|
|
|
|
get_layout_hdr(lo);
|
2012-01-22 07:03:39 -07:00
|
|
|
return lo;
|
2011-06-01 14:44:44 -06:00
|
|
|
}
|
2011-01-06 04:36:30 -07:00
|
|
|
}
|
2012-01-22 07:03:39 -07:00
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct pnfs_layout_hdr * get_layout_by_fh(struct nfs_client *clp, struct nfs_fh *fh)
|
|
|
|
{
|
|
|
|
struct pnfs_layout_hdr *lo;
|
|
|
|
|
|
|
|
spin_lock(&clp->cl_lock);
|
|
|
|
rcu_read_lock();
|
|
|
|
lo = get_layout_by_fh_locked(clp, fh);
|
2011-06-01 14:44:44 -06:00
|
|
|
rcu_read_unlock();
|
2011-01-06 04:36:30 -07:00
|
|
|
spin_unlock(&clp->cl_lock);
|
2011-06-01 14:44:44 -06:00
|
|
|
|
2012-01-22 07:03:39 -07:00
|
|
|
return lo;
|
|
|
|
}
|
|
|
|
|
|
|
|
static u32 initiate_file_draining(struct nfs_client *clp,
|
|
|
|
struct cb_layoutrecallargs *args)
|
|
|
|
{
|
|
|
|
struct inode *ino;
|
|
|
|
struct pnfs_layout_hdr *lo;
|
|
|
|
u32 rv = NFS4ERR_NOMATCHING_LAYOUT;
|
|
|
|
LIST_HEAD(free_me_list);
|
|
|
|
|
|
|
|
lo = get_layout_by_fh(clp, &args->cbl_fh);
|
|
|
|
if (!lo)
|
2011-01-06 04:36:30 -07:00
|
|
|
return NFS4ERR_NOMATCHING_LAYOUT;
|
|
|
|
|
2012-01-22 07:03:39 -07:00
|
|
|
ino = lo->plh_inode;
|
2011-01-06 04:36:30 -07:00
|
|
|
spin_lock(&ino->i_lock);
|
|
|
|
if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) ||
|
|
|
|
mark_matching_lsegs_invalid(lo, &free_me_list,
|
2011-05-22 10:48:02 -06:00
|
|
|
&args->cbl_range))
|
2011-01-06 04:36:30 -07:00
|
|
|
rv = NFS4ERR_DELAY;
|
|
|
|
else
|
|
|
|
rv = NFS4ERR_NOMATCHING_LAYOUT;
|
|
|
|
pnfs_set_layout_stateid(lo, &args->cbl_stateid, true);
|
|
|
|
spin_unlock(&ino->i_lock);
|
|
|
|
pnfs_free_lseg_list(&free_me_list);
|
|
|
|
put_layout_hdr(lo);
|
|
|
|
iput(ino);
|
|
|
|
return rv;
|
|
|
|
}
|
|
|
|
|
|
|
|
static u32 initiate_bulk_draining(struct nfs_client *clp,
|
|
|
|
struct cb_layoutrecallargs *args)
|
|
|
|
{
|
2011-06-01 14:44:44 -06:00
|
|
|
struct nfs_server *server;
|
2011-01-06 04:36:30 -07:00
|
|
|
struct pnfs_layout_hdr *lo;
|
|
|
|
struct inode *ino;
|
|
|
|
u32 rv = NFS4ERR_NOMATCHING_LAYOUT;
|
|
|
|
struct pnfs_layout_hdr *tmp;
|
|
|
|
LIST_HEAD(recall_list);
|
|
|
|
LIST_HEAD(free_me_list);
|
|
|
|
struct pnfs_layout_range range = {
|
|
|
|
.iomode = IOMODE_ANY,
|
|
|
|
.offset = 0,
|
|
|
|
.length = NFS4_MAX_UINT64,
|
|
|
|
};
|
|
|
|
|
|
|
|
spin_lock(&clp->cl_lock);
|
2011-06-01 14:44:44 -06:00
|
|
|
rcu_read_lock();
|
|
|
|
list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
|
2011-01-06 04:36:30 -07:00
|
|
|
if ((args->cbl_recall_type == RETURN_FSID) &&
|
2011-06-01 14:44:44 -06:00
|
|
|
memcmp(&server->fsid, &args->cbl_fsid,
|
|
|
|
sizeof(struct nfs_fsid)))
|
2011-01-06 04:36:30 -07:00
|
|
|
continue;
|
2011-06-01 14:44:44 -06:00
|
|
|
|
|
|
|
list_for_each_entry(lo, &server->layouts, plh_layouts) {
|
|
|
|
if (!igrab(lo->plh_inode))
|
|
|
|
continue;
|
|
|
|
get_layout_hdr(lo);
|
|
|
|
BUG_ON(!list_empty(&lo->plh_bulk_recall));
|
|
|
|
list_add(&lo->plh_bulk_recall, &recall_list);
|
|
|
|
}
|
2011-01-06 04:36:30 -07:00
|
|
|
}
|
2011-06-01 14:44:44 -06:00
|
|
|
rcu_read_unlock();
|
2011-01-06 04:36:30 -07:00
|
|
|
spin_unlock(&clp->cl_lock);
|
2011-06-01 14:44:44 -06:00
|
|
|
|
2011-01-06 04:36:30 -07:00
|
|
|
list_for_each_entry_safe(lo, tmp,
|
|
|
|
&recall_list, plh_bulk_recall) {
|
|
|
|
ino = lo->plh_inode;
|
|
|
|
spin_lock(&ino->i_lock);
|
|
|
|
set_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags);
|
2011-05-22 10:48:02 -06:00
|
|
|
if (mark_matching_lsegs_invalid(lo, &free_me_list, &range))
|
2011-01-06 04:36:30 -07:00
|
|
|
rv = NFS4ERR_DELAY;
|
|
|
|
list_del_init(&lo->plh_bulk_recall);
|
|
|
|
spin_unlock(&ino->i_lock);
|
2011-02-03 11:28:52 -07:00
|
|
|
pnfs_free_lseg_list(&free_me_list);
|
2011-01-06 04:36:30 -07:00
|
|
|
put_layout_hdr(lo);
|
|
|
|
iput(ino);
|
|
|
|
}
|
|
|
|
return rv;
|
|
|
|
}
|
|
|
|
|
|
|
|
static u32 do_callback_layoutrecall(struct nfs_client *clp,
|
|
|
|
struct cb_layoutrecallargs *args)
|
|
|
|
{
|
2012-03-01 09:17:50 -07:00
|
|
|
u32 res;
|
2011-01-06 04:36:30 -07:00
|
|
|
|
|
|
|
dprintk("%s enter, type=%i\n", __func__, args->cbl_recall_type);
|
|
|
|
if (args->cbl_recall_type == RETURN_FILE)
|
|
|
|
res = initiate_file_draining(clp, args);
|
|
|
|
else
|
|
|
|
res = initiate_bulk_draining(clp, args);
|
|
|
|
dprintk("%s returning %i\n", __func__, res);
|
|
|
|
return res;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
2011-01-06 04:36:29 -07:00
|
|
|
__be32 nfs4_callback_layoutrecall(struct cb_layoutrecallargs *args,
|
|
|
|
void *dummy, struct cb_process_state *cps)
|
|
|
|
{
|
2011-01-06 04:36:30 -07:00
|
|
|
u32 res;
|
|
|
|
|
|
|
|
dprintk("%s: -->\n", __func__);
|
|
|
|
|
|
|
|
if (cps->clp)
|
|
|
|
res = do_callback_layoutrecall(cps->clp, args);
|
|
|
|
else
|
|
|
|
res = NFS4ERR_OP_NOT_IN_SESSION;
|
|
|
|
|
|
|
|
dprintk("%s: exit with status = %d\n", __func__, res);
|
|
|
|
return cpu_to_be32(res);
|
2011-01-06 04:36:29 -07:00
|
|
|
}
|
|
|
|
|
2011-01-06 04:36:31 -07:00
|
|
|
static void pnfs_recall_all_layouts(struct nfs_client *clp)
|
|
|
|
{
|
|
|
|
struct cb_layoutrecallargs args;
|
|
|
|
|
|
|
|
/* Pretend we got a CB_LAYOUTRECALL(ALL) */
|
|
|
|
memset(&args, 0, sizeof(args));
|
|
|
|
args.cbl_recall_type = RETURN_ALL;
|
|
|
|
/* FIXME we ignore errors, what should we do? */
|
|
|
|
do_callback_layoutrecall(clp, &args);
|
|
|
|
}
|
|
|
|
|
2011-05-22 10:47:09 -06:00
|
|
|
__be32 nfs4_callback_devicenotify(struct cb_devicenotifyargs *args,
|
|
|
|
void *dummy, struct cb_process_state *cps)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
__be32 res = 0;
|
|
|
|
struct nfs_client *clp = cps->clp;
|
|
|
|
struct nfs_server *server = NULL;
|
|
|
|
|
|
|
|
dprintk("%s: -->\n", __func__);
|
|
|
|
|
|
|
|
if (!clp) {
|
|
|
|
res = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (i = 0; i < args->ndevs; i++) {
|
|
|
|
struct cb_devicenotifyitem *dev = &args->devs[i];
|
|
|
|
|
|
|
|
if (!server ||
|
|
|
|
server->pnfs_curr_ld->id != dev->cbd_layout_type) {
|
|
|
|
rcu_read_lock();
|
|
|
|
list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link)
|
|
|
|
if (server->pnfs_curr_ld &&
|
|
|
|
server->pnfs_curr_ld->id == dev->cbd_layout_type) {
|
|
|
|
rcu_read_unlock();
|
|
|
|
goto found;
|
|
|
|
}
|
|
|
|
rcu_read_unlock();
|
|
|
|
dprintk("%s: layout type %u not found\n",
|
|
|
|
__func__, dev->cbd_layout_type);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
found:
|
|
|
|
if (dev->cbd_notify_type == NOTIFY_DEVICEID4_CHANGE)
|
|
|
|
dprintk("%s: NOTIFY_DEVICEID4_CHANGE not supported, "
|
|
|
|
"deleting instead\n", __func__);
|
2011-05-24 09:04:02 -06:00
|
|
|
nfs4_delete_deviceid(server->pnfs_curr_ld, clp, &dev->cbd_dev_id);
|
2011-05-22 10:47:09 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
out:
|
|
|
|
kfree(args->devs);
|
|
|
|
dprintk("%s: exit with status = %u\n",
|
|
|
|
__func__, be32_to_cpu(res));
|
|
|
|
return res;
|
|
|
|
}
|
|
|
|
|
2009-04-01 07:23:35 -06:00
|
|
|
/*
|
|
|
|
* Validate the sequenceID sent by the server.
|
|
|
|
* Return success if the sequenceID is one more than what we last saw on
|
|
|
|
* this slot, accounting for wraparound. Increments the slot's sequence.
|
|
|
|
*
|
2010-01-14 15:45:08 -07:00
|
|
|
* We don't yet implement a duplicate request cache, instead we set the
|
|
|
|
* back channel ca_maxresponsesize_cached to zero. This is OK for now
|
2009-04-01 07:23:35 -06:00
|
|
|
* since we only currently implement idempotent callbacks anyway.
|
|
|
|
*
|
|
|
|
* We have a single slot backchannel at this time, so we don't bother
|
|
|
|
* checking the used_slots bit array on the table. The lower layer guarantees
|
|
|
|
* a single outstanding callback request at a time.
|
|
|
|
*/
|
2010-01-22 10:03:08 -07:00
|
|
|
static __be32
|
2010-01-14 15:45:07 -07:00
|
|
|
validate_seqid(struct nfs4_slot_table *tbl, struct cb_sequenceargs * args)
|
2009-04-01 07:23:35 -06:00
|
|
|
{
|
|
|
|
struct nfs4_slot *slot;
|
|
|
|
|
|
|
|
dprintk("%s enter. slotid %d seqid %d\n",
|
2010-01-14 15:45:07 -07:00
|
|
|
__func__, args->csa_slotid, args->csa_sequenceid);
|
2009-04-01 07:23:35 -06:00
|
|
|
|
2011-11-09 11:58:20 -07:00
|
|
|
if (args->csa_slotid >= NFS41_BC_MAX_CALLBACKS)
|
2009-04-01 07:23:35 -06:00
|
|
|
return htonl(NFS4ERR_BADSLOT);
|
|
|
|
|
2010-01-14 15:45:07 -07:00
|
|
|
slot = tbl->slots + args->csa_slotid;
|
2009-04-01 07:23:35 -06:00
|
|
|
dprintk("%s slot table seqid: %d\n", __func__, slot->seq_nr);
|
|
|
|
|
|
|
|
/* Normal */
|
2010-01-14 15:45:07 -07:00
|
|
|
if (likely(args->csa_sequenceid == slot->seq_nr + 1)) {
|
2009-04-01 07:23:35 -06:00
|
|
|
slot->seq_nr++;
|
2011-08-02 12:46:29 -06:00
|
|
|
goto out_ok;
|
2009-04-01 07:23:35 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Replay */
|
2010-01-14 15:45:07 -07:00
|
|
|
if (args->csa_sequenceid == slot->seq_nr) {
|
2010-01-14 15:45:08 -07:00
|
|
|
dprintk("%s seqid %d is a replay\n",
|
2010-01-14 15:45:07 -07:00
|
|
|
__func__, args->csa_sequenceid);
|
2010-01-14 15:45:08 -07:00
|
|
|
/* Signal process_op to set this error on next op */
|
|
|
|
if (args->csa_cachethis == 0)
|
|
|
|
return htonl(NFS4ERR_RETRY_UNCACHED_REP);
|
|
|
|
|
|
|
|
/* The ca_maxresponsesize_cached is 0 with no DRC */
|
|
|
|
else if (args->csa_cachethis == 1)
|
|
|
|
return htonl(NFS4ERR_REP_TOO_BIG_TO_CACHE);
|
2009-04-01 07:23:35 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Wraparound */
|
2010-01-14 15:45:07 -07:00
|
|
|
if (args->csa_sequenceid == 1 && (slot->seq_nr + 1) == 0) {
|
2009-04-01 07:23:35 -06:00
|
|
|
slot->seq_nr = 1;
|
2011-08-02 12:46:29 -06:00
|
|
|
goto out_ok;
|
2009-04-01 07:23:35 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Misordered request */
|
|
|
|
return htonl(NFS4ERR_SEQ_MISORDERED);
|
2011-08-02 12:46:29 -06:00
|
|
|
out_ok:
|
|
|
|
tbl->highest_used_slotid = args->csa_slotid;
|
|
|
|
return htonl(NFS4_OK);
|
2009-04-01 07:23:35 -06:00
|
|
|
}
|
|
|
|
|
2010-01-19 10:54:40 -07:00
|
|
|
/*
|
|
|
|
* For each referring call triple, check the session's slot table for
|
|
|
|
* a match. If the slot is in use and the sequence numbers match, the
|
|
|
|
* client is still waiting for a response to the original request.
|
|
|
|
*/
|
|
|
|
static bool referring_call_exists(struct nfs_client *clp,
|
|
|
|
uint32_t nrclists,
|
|
|
|
struct referring_call_list *rclists)
|
|
|
|
{
|
|
|
|
bool status = 0;
|
|
|
|
int i, j;
|
|
|
|
struct nfs4_session *session;
|
|
|
|
struct nfs4_slot_table *tbl;
|
|
|
|
struct referring_call_list *rclist;
|
|
|
|
struct referring_call *ref;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* XXX When client trunking is implemented, this becomes
|
|
|
|
* a session lookup from within the loop
|
|
|
|
*/
|
|
|
|
session = clp->cl_session;
|
|
|
|
tbl = &session->fc_slot_table;
|
|
|
|
|
|
|
|
for (i = 0; i < nrclists; i++) {
|
|
|
|
rclist = &rclists[i];
|
|
|
|
if (memcmp(session->sess_id.data,
|
|
|
|
rclist->rcl_sessionid.data,
|
|
|
|
NFS4_MAX_SESSIONID_LEN) != 0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
for (j = 0; j < rclist->rcl_nrefcalls; j++) {
|
|
|
|
ref = &rclist->rcl_refcalls[j];
|
|
|
|
|
|
|
|
dprintk("%s: sessionid %x:%x:%x:%x sequenceid %u "
|
|
|
|
"slotid %u\n", __func__,
|
|
|
|
((u32 *)&rclist->rcl_sessionid.data)[0],
|
|
|
|
((u32 *)&rclist->rcl_sessionid.data)[1],
|
|
|
|
((u32 *)&rclist->rcl_sessionid.data)[2],
|
|
|
|
((u32 *)&rclist->rcl_sessionid.data)[3],
|
|
|
|
ref->rc_sequenceid, ref->rc_slotid);
|
|
|
|
|
|
|
|
spin_lock(&tbl->slot_tbl_lock);
|
|
|
|
status = (test_bit(ref->rc_slotid, tbl->used_slots) &&
|
|
|
|
tbl->slots[ref->rc_slotid].seq_nr ==
|
|
|
|
ref->rc_sequenceid);
|
|
|
|
spin_unlock(&tbl->slot_tbl_lock);
|
|
|
|
if (status)
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
out:
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
2010-01-22 10:03:08 -07:00
|
|
|
__be32 nfs4_callback_sequence(struct cb_sequenceargs *args,
|
2011-01-05 19:04:32 -07:00
|
|
|
struct cb_sequenceres *res,
|
|
|
|
struct cb_process_state *cps)
|
2009-04-01 07:23:25 -06:00
|
|
|
{
|
2011-08-02 12:46:29 -06:00
|
|
|
struct nfs4_slot_table *tbl;
|
2009-04-01 07:23:35 -06:00
|
|
|
struct nfs_client *clp;
|
2010-01-22 10:03:08 -07:00
|
|
|
int i;
|
2011-01-25 08:38:01 -07:00
|
|
|
__be32 status = htonl(NFS4ERR_BADSESSION);
|
2009-04-01 07:23:25 -06:00
|
|
|
|
2012-01-26 04:11:49 -07:00
|
|
|
clp = nfs4_find_client_sessionid(cps->net, args->csa_addr, &args->csa_sessionid);
|
2009-04-01 07:23:35 -06:00
|
|
|
if (clp == NULL)
|
|
|
|
goto out;
|
|
|
|
|
2011-08-02 12:46:29 -06:00
|
|
|
tbl = &clp->cl_session->bc_slot_table;
|
|
|
|
|
|
|
|
spin_lock(&tbl->slot_tbl_lock);
|
2011-01-05 19:04:34 -07:00
|
|
|
/* state manager is resetting the session */
|
|
|
|
if (test_bit(NFS4_SESSION_DRAINING, &clp->cl_session->session_state)) {
|
2011-08-02 12:46:29 -06:00
|
|
|
spin_unlock(&tbl->slot_tbl_lock);
|
|
|
|
status = htonl(NFS4ERR_DELAY);
|
2011-08-02 12:46:52 -06:00
|
|
|
/* Return NFS4ERR_BADSESSION if we're draining the session
|
|
|
|
* in order to reset it.
|
|
|
|
*/
|
|
|
|
if (test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state))
|
|
|
|
status = htonl(NFS4ERR_BADSESSION);
|
2011-01-05 19:04:34 -07:00
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2010-01-14 15:45:07 -07:00
|
|
|
status = validate_seqid(&clp->cl_session->bc_slot_table, args);
|
2011-08-02 12:46:29 -06:00
|
|
|
spin_unlock(&tbl->slot_tbl_lock);
|
2009-04-01 07:23:35 -06:00
|
|
|
if (status)
|
2011-01-05 19:04:32 -07:00
|
|
|
goto out;
|
2009-04-01 07:23:35 -06:00
|
|
|
|
2011-08-02 12:46:29 -06:00
|
|
|
cps->slotid = args->csa_slotid;
|
|
|
|
|
2010-01-19 10:54:41 -07:00
|
|
|
/*
|
|
|
|
* Check for pending referring calls. If a match is found, a
|
|
|
|
* related callback was received before the response to the original
|
|
|
|
* call.
|
|
|
|
*/
|
|
|
|
if (referring_call_exists(clp, args->csa_nrclists, args->csa_rclists)) {
|
|
|
|
status = htonl(NFS4ERR_DELAY);
|
2011-01-05 19:04:32 -07:00
|
|
|
goto out;
|
2010-01-19 10:54:41 -07:00
|
|
|
}
|
|
|
|
|
2009-04-01 07:23:25 -06:00
|
|
|
memcpy(&res->csr_sessionid, &args->csa_sessionid,
|
|
|
|
sizeof(res->csr_sessionid));
|
|
|
|
res->csr_sequenceid = args->csa_sequenceid;
|
|
|
|
res->csr_slotid = args->csa_slotid;
|
|
|
|
res->csr_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;
|
|
|
|
res->csr_target_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;
|
|
|
|
|
2009-04-01 07:23:35 -06:00
|
|
|
out:
|
2011-01-25 08:38:02 -07:00
|
|
|
cps->clp = clp; /* put in nfs4_callback_compound */
|
2010-01-19 10:54:41 -07:00
|
|
|
for (i = 0; i < args->csa_nrclists; i++)
|
|
|
|
kfree(args->csa_rclists[i].rcl_refcalls);
|
|
|
|
kfree(args->csa_rclists);
|
|
|
|
|
2011-01-05 19:04:32 -07:00
|
|
|
if (status == htonl(NFS4ERR_RETRY_UNCACHED_REP)) {
|
|
|
|
cps->drc_status = status;
|
|
|
|
status = 0;
|
|
|
|
} else
|
2010-01-14 15:45:08 -07:00
|
|
|
res->csr_status = status;
|
2011-01-05 19:04:32 -07:00
|
|
|
|
2010-01-14 15:45:08 -07:00
|
|
|
dprintk("%s: exit with status = %d res->csr_status %d\n", __func__,
|
|
|
|
ntohl(status), ntohl(res->csr_status));
|
|
|
|
return status;
|
2009-04-01 07:23:25 -06:00
|
|
|
}
|
|
|
|
|
2011-01-06 04:36:31 -07:00
|
|
|
static bool
|
|
|
|
validate_bitmap_values(unsigned long mask)
|
|
|
|
{
|
|
|
|
return (mask & ~RCA4_TYPE_MASK_ALL) == 0;
|
|
|
|
}
|
|
|
|
|
2011-01-05 19:04:32 -07:00
|
|
|
__be32 nfs4_callback_recallany(struct cb_recallanyargs *args, void *dummy,
|
|
|
|
struct cb_process_state *cps)
|
2009-12-05 11:27:02 -07:00
|
|
|
{
|
2010-01-22 10:03:08 -07:00
|
|
|
__be32 status;
|
2009-12-05 11:27:02 -07:00
|
|
|
fmode_t flags = 0;
|
|
|
|
|
2011-01-06 04:36:31 -07:00
|
|
|
status = cpu_to_be32(NFS4ERR_OP_NOT_IN_SESSION);
|
2011-01-05 19:04:32 -07:00
|
|
|
if (!cps->clp) /* set in cb_sequence */
|
2009-12-05 11:27:02 -07:00
|
|
|
goto out;
|
|
|
|
|
2012-03-01 15:00:56 -07:00
|
|
|
dprintk_rcu("NFS: RECALL_ANY callback request from %s\n",
|
2011-01-05 19:04:32 -07:00
|
|
|
rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR));
|
2009-12-05 11:27:02 -07:00
|
|
|
|
2011-01-06 04:36:31 -07:00
|
|
|
status = cpu_to_be32(NFS4ERR_INVAL);
|
|
|
|
if (!validate_bitmap_values(args->craa_type_mask))
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
status = cpu_to_be32(NFS4_OK);
|
2009-12-05 11:27:02 -07:00
|
|
|
if (test_bit(RCA4_TYPE_MASK_RDATA_DLG, (const unsigned long *)
|
|
|
|
&args->craa_type_mask))
|
|
|
|
flags = FMODE_READ;
|
|
|
|
if (test_bit(RCA4_TYPE_MASK_WDATA_DLG, (const unsigned long *)
|
|
|
|
&args->craa_type_mask))
|
|
|
|
flags |= FMODE_WRITE;
|
2011-01-06 04:36:31 -07:00
|
|
|
if (test_bit(RCA4_TYPE_MASK_FILE_LAYOUT, (const unsigned long *)
|
|
|
|
&args->craa_type_mask))
|
|
|
|
pnfs_recall_all_layouts(cps->clp);
|
2009-12-05 11:27:02 -07:00
|
|
|
if (flags)
|
2011-01-05 19:04:32 -07:00
|
|
|
nfs_expire_all_delegation_types(cps->clp, flags);
|
2009-12-05 11:27:02 -07:00
|
|
|
out:
|
|
|
|
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
|
|
|
|
return status;
|
|
|
|
}
|
2010-01-20 14:06:27 -07:00
|
|
|
|
|
|
|
/* Reduce the fore channel's max_slots to the target value */
|
2011-01-05 19:04:32 -07:00
|
|
|
__be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, void *dummy,
|
|
|
|
struct cb_process_state *cps)
|
2010-01-20 14:06:27 -07:00
|
|
|
{
|
|
|
|
struct nfs4_slot_table *fc_tbl;
|
2010-01-22 10:03:08 -07:00
|
|
|
__be32 status;
|
2010-01-20 14:06:27 -07:00
|
|
|
|
|
|
|
status = htonl(NFS4ERR_OP_NOT_IN_SESSION);
|
2011-01-05 19:04:32 -07:00
|
|
|
if (!cps->clp) /* set in cb_sequence */
|
2010-01-20 14:06:27 -07:00
|
|
|
goto out;
|
|
|
|
|
2012-03-01 15:00:56 -07:00
|
|
|
dprintk_rcu("NFS: CB_RECALL_SLOT request from %s target max slots %d\n",
|
2011-01-05 19:04:32 -07:00
|
|
|
rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR),
|
2010-01-20 14:06:27 -07:00
|
|
|
args->crsa_target_max_slots);
|
|
|
|
|
2011-01-05 19:04:32 -07:00
|
|
|
fc_tbl = &cps->clp->cl_session->fc_slot_table;
|
2010-01-20 14:06:27 -07:00
|
|
|
|
|
|
|
status = htonl(NFS4ERR_BAD_HIGH_SLOT);
|
2010-01-21 12:19:16 -07:00
|
|
|
if (args->crsa_target_max_slots > fc_tbl->max_slots ||
|
2010-01-20 14:06:27 -07:00
|
|
|
args->crsa_target_max_slots < 1)
|
2011-01-05 19:04:32 -07:00
|
|
|
goto out;
|
2010-01-21 12:19:16 -07:00
|
|
|
|
|
|
|
status = htonl(NFS4_OK);
|
|
|
|
if (args->crsa_target_max_slots == fc_tbl->max_slots)
|
2011-01-05 19:04:32 -07:00
|
|
|
goto out;
|
2010-01-20 14:06:27 -07:00
|
|
|
|
|
|
|
fc_tbl->target_max_slots = args->crsa_target_max_slots;
|
2011-01-05 19:04:32 -07:00
|
|
|
nfs41_handle_recall_slot(cps->clp);
|
2010-01-20 14:06:27 -07:00
|
|
|
out:
|
|
|
|
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
|
|
|
|
return status;
|
|
|
|
}
|
2009-04-01 07:23:25 -06:00
|
|
|
#endif /* CONFIG_NFS_V4_1 */
|