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NFS client updates for Linux 5.3 

Highlights include:
 
 Stable fixes:
 - SUNRPC: Ensure bvecs are re-synced when we re-encode the RPC request
 - Fix an Oops in ff_layout_track_ds_error due to a PTR_ERR() dereference
 - Revert buggy NFS readdirplus optimisation
 - NFSv4: Handle the special Linux file open access mode
 - pnfs: Fix a problem where we gratuitously start doing I/O through the MDS
 
 Features:
 - Allow NFS client to set up multiple TCP connections to the server using
    a new 'nconnect=X' mount option. Queue length is used to balance load.
 - Enhance statistics reporting to report on all transports when using
    multiple connections.
 - Speed up SUNRPC by removing bh-safe spinlocks
 - Add a mechanism to allow NFSv4 to request that containers set a
    unique per-host identifier for when the hostname is not set.
 - Ensure NFSv4 updates the lease_time after a clientid update
 
 Bugfixes and cleanup:
 - Fix use-after-free in rpcrdma_post_recvs
 - Fix a memory leak when nfs_match_client() is interrupted
 - Fix buggy file access checking in NFSv4 open for execute
 - disable unsupported client side deduplication
 - Fix spurious client disconnections
 - Fix occasional RDMA transport deadlock
 - Various RDMA cleanups
 - Various tracepoint fixes
 - Fix the TCP callback channel to guarantee the server can actually send
    the number of callback requests that was negotiated at mount time.
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Merge tag 'nfs-for-5.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

  Stable fixes:

   - SUNRPC: Ensure bvecs are re-synced when we re-encode the RPC
     request

   - Fix an Oops in ff_layout_track_ds_error due to a PTR_ERR()
     dereference

   - Revert buggy NFS readdirplus optimisation

   - NFSv4: Handle the special Linux file open access mode

   - pnfs: Fix a problem where we gratuitously start doing I/O through
     the MDS

  Features:

   - Allow NFS client to set up multiple TCP connections to the server
     using a new 'nconnect=X' mount option. Queue length is used to
     balance load.

   - Enhance statistics reporting to report on all transports when using
     multiple connections.

   - Speed up SUNRPC by removing bh-safe spinlocks

   - Add a mechanism to allow NFSv4 to request that containers set a
     unique per-host identifier for when the hostname is not set.

   - Ensure NFSv4 updates the lease_time after a clientid update

  Bugfixes and cleanup:

   - Fix use-after-free in rpcrdma_post_recvs

   - Fix a memory leak when nfs_match_client() is interrupted

   - Fix buggy file access checking in NFSv4 open for execute

   - disable unsupported client side deduplication

   - Fix spurious client disconnections

   - Fix occasional RDMA transport deadlock

   - Various RDMA cleanups

   - Various tracepoint fixes

   - Fix the TCP callback channel to guarantee the server can actually
     send the number of callback requests that was negotiated at mount
     time"

* tag 'nfs-for-5.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (68 commits)
  pnfs/flexfiles: Add tracepoints for detecting pnfs fallback to MDS
  pnfs: Fix a problem where we gratuitously start doing I/O through the MDS
  SUNRPC: Optimise transport balancing code
  SUNRPC: Ensure the bvecs are reset when we re-encode the RPC request
  pnfs/flexfiles: Fix PTR_ERR() dereferences in ff_layout_track_ds_error
  NFSv4: Don't use the zero stateid with layoutget
  SUNRPC: Fix up backchannel slot table accounting
  SUNRPC: Fix initialisation of struct rpc_xprt_switch
  SUNRPC: Skip zero-refcount transports
  SUNRPC: Replace division by multiplication in calculation of queue length
  NFSv4: Validate the stateid before applying it to state recovery
  nfs4.0: Refetch lease_time after clientid update
  nfs4: Rename nfs41_setup_state_renewal
  nfs4: Make nfs4_proc_get_lease_time available for nfs4.0
  nfs: Fix copy-and-paste error in debug message
  NFS: Replace 16 seq_printf() calls by seq_puts()
  NFS: Use seq_putc() in nfs_show_stats()
  Revert "NFS: readdirplus optimization by cache mechanism" (memleak)
  SUNRPC: Fix transport accounting when caller specifies an rpc_xprt
  NFS: Record task, client ID, and XID in xdr_status trace points
  ...
This commit is contained in:
Linus Torvalds 2019-07-18 14:32:33 -07:00
parent 0570bc8b7c d5b9216fd5
commit 6860c981b9
56 changed files with 1838 additions and 877 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
fs/nfs/Makefile
View File

@ -8,7 +8,8 @@ obj-$(CONFIG_NFS_FS) += nfs.o
CFLAGS_nfstrace.o += -I$(src)
nfs-y := client.o dir.o file.o getroot.o inode.o super.o \
io.o direct.o pagelist.o read.o symlink.o unlink.o \
write.o namespace.o mount_clnt.o nfstrace.o export.o
write.o namespace.o mount_clnt.o nfstrace.o \
export.o sysfs.o
nfs-$(CONFIG_ROOT_NFS) += nfsroot.o
nfs-$(CONFIG_SYSCTL) += sysctl.o
nfs-$(CONFIG_NFS_FSCACHE) += fscache.o fscache-index.o

28
fs/nfs/callback_proc.c
View File

@ -414,27 +414,39 @@ static __be32
validate_seqid(const struct nfs4_slot_table *tbl, const struct nfs4_slot *slot,
const struct cb_sequenceargs * args)
{
__be32 ret;
ret = cpu_to_be32(NFS4ERR_BADSLOT);
if (args->csa_slotid > tbl->server_highest_slotid)
return htonl(NFS4ERR_BADSLOT);
goto out_err;
/* Replay */
if (args->csa_sequenceid == slot->seq_nr) {
ret = cpu_to_be32(NFS4ERR_DELAY);
if (nfs4_test_locked_slot(tbl, slot->slot_nr))
return htonl(NFS4ERR_DELAY);
goto out_err;
/* Signal process_op to set this error on next op */
ret = cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP);
if (args->csa_cachethis == 0)
return htonl(NFS4ERR_RETRY_UNCACHED_REP);
goto out_err;
/* Liar! We never allowed you to set csa_cachethis != 0 */
return htonl(NFS4ERR_SEQ_FALSE_RETRY);
ret = cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY);
goto out_err;
}
/* Note: wraparound relies on seq_nr being of type u32 */
if (likely(args->csa_sequenceid == slot->seq_nr + 1))
return htonl(NFS4_OK);
/* Misordered request */
return htonl(NFS4ERR_SEQ_MISORDERED);
ret = cpu_to_be32(NFS4ERR_SEQ_MISORDERED);
if (args->csa_sequenceid != slot->seq_nr + 1)
goto out_err;
return cpu_to_be32(NFS4_OK);
out_err:
trace_nfs4_cb_seqid_err(args, ret);
return ret;
}
/*

24
fs/nfs/client.c
View File

@ -49,6 +49,7 @@
#include "pnfs.h"
#include "nfs.h"
#include "netns.h"
#include "sysfs.h"
#define NFSDBG_FACILITY NFSDBG_CLIENT
@ -175,6 +176,7 @@ struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
clp->cl_rpcclient = ERR_PTR(-EINVAL);
clp->cl_proto = cl_init->proto;
clp->cl_nconnect = cl_init->nconnect;
clp->cl_net = get_net(cl_init->net);
clp->cl_principal = "*";
@ -192,7 +194,7 @@ struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
EXPORT_SYMBOL_GPL(nfs_alloc_client);
#if IS_ENABLED(CONFIG_NFS_V4)
void nfs_cleanup_cb_ident_idr(struct net *net)
static void nfs_cleanup_cb_ident_idr(struct net *net)
{
struct nfs_net *nn = net_generic(net, nfs_net_id);
@ -214,7 +216,7 @@ static void pnfs_init_server(struct nfs_server *server)
}
#else
void nfs_cleanup_cb_ident_idr(struct net *net)
static void nfs_cleanup_cb_ident_idr(struct net *net)
{
}
@ -406,10 +408,10 @@ struct nfs_client *nfs_get_client(const struct nfs_client_initdata *cl_init)
clp = nfs_match_client(cl_init);
if (clp) {
spin_unlock(&nn->nfs_client_lock);
if (IS_ERR(clp))
return clp;
if (new)
new->rpc_ops->free_client(new);
if (IS_ERR(clp))
return clp;
return nfs_found_client(cl_init, clp);
}
if (new) {
@ -493,6 +495,7 @@ int nfs_create_rpc_client(struct nfs_client *clp,
struct rpc_create_args args = {
.net = clp->cl_net,
.protocol = clp->cl_proto,
.nconnect = clp->cl_nconnect,
.address = (struct sockaddr *)&clp->cl_addr,
.addrsize = clp->cl_addrlen,
.timeout = cl_init->timeparms,
@ -658,6 +661,7 @@ static int nfs_init_server(struct nfs_server *server,
.net = data->net,
.timeparms = &timeparms,
.cred = server->cred,
.nconnect = data->nfs_server.nconnect,
};
struct nfs_client *clp;
int error;
@ -1072,6 +1076,18 @@ void nfs_clients_init(struct net *net)
#endif
spin_lock_init(&nn->nfs_client_lock);
nn->boot_time = ktime_get_real();
nfs_netns_sysfs_setup(nn, net);
}
void nfs_clients_exit(struct net *net)
{
struct nfs_net *nn = net_generic(net, nfs_net_id);
nfs_netns_sysfs_destroy(nn);
nfs_cleanup_cb_ident_idr(net);
WARN_ON_ONCE(!list_empty(&nn->nfs_client_list));
WARN_ON_ONCE(!list_empty(&nn->nfs_volume_list));
}
#ifdef CONFIG_PROC_FS

94
fs/nfs/dir.c
View File

@ -80,6 +80,10 @@ static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct inode *dir
ctx->dup_cookie = 0;
ctx->cred = get_cred(cred);
spin_lock(&dir->i_lock);
if (list_empty(&nfsi->open_files) &&
(nfsi->cache_validity & NFS_INO_DATA_INVAL_DEFER))
nfsi->cache_validity |= NFS_INO_INVALID_DATA |
NFS_INO_REVAL_FORCED;
list_add(&ctx->list, &nfsi->open_files);
spin_unlock(&dir->i_lock);
return ctx;
@ -140,19 +144,12 @@ struct nfs_cache_array {
struct nfs_cache_array_entry array[0];
};
struct readdirvec {
unsigned long nr;
unsigned long index;
struct page *pages[NFS_MAX_READDIR_RAPAGES];
};
typedef int (*decode_dirent_t)(struct xdr_stream *, struct nfs_entry *, bool);
typedef struct {
struct file *file;
struct page *page;
struct dir_context *ctx;
unsigned long page_index;
struct readdirvec pvec;
u64 *dir_cookie;
u64 last_cookie;
loff_t current_index;
@ -532,10 +529,6 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
struct nfs_cache_array *array;
unsigned int count = 0;
int status;
int max_rapages = NFS_MAX_READDIR_RAPAGES;
desc->pvec.index = desc->page_index;
desc->pvec.nr = 0;
scratch = alloc_page(GFP_KERNEL);
if (scratch == NULL)
@ -560,40 +553,20 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
if (desc->plus)
nfs_prime_dcache(file_dentry(desc->file), entry);
status = nfs_readdir_add_to_array(entry, desc->pvec.pages[desc->pvec.nr]);
if (status == -ENOSPC) {
desc->pvec.nr++;
if (desc->pvec.nr == max_rapages)
break;
status = nfs_readdir_add_to_array(entry, desc->pvec.pages[desc->pvec.nr]);
}
status = nfs_readdir_add_to_array(entry, page);
if (status != 0)
break;
} while (!entry->eof);
/*
* page and desc->pvec.pages[0] are valid, don't need to check
* whether or not to be NULL.
*/
copy_highpage(page, desc->pvec.pages[0]);
out_nopages:
if (count == 0 || (status == -EBADCOOKIE && entry->eof != 0)) {
array = kmap_atomic(desc->pvec.pages[desc->pvec.nr]);
array = kmap(page);
array->eof_index = array->size;
status = 0;
kunmap_atomic(array);
kunmap(page);
}
put_page(scratch);
/*
* desc->pvec.nr > 0 means at least one page was completely filled,
* we should return -ENOSPC. Otherwise function
* nfs_readdir_xdr_to_array will enter infinite loop.
*/
if (desc->pvec.nr > 0)
return -ENOSPC;
return status;
}
@ -627,24 +600,6 @@ int nfs_readdir_alloc_pages(struct page **pages, unsigned int npages)
return -ENOMEM;
}
/*
* nfs_readdir_rapages_init initialize rapages by nfs_cache_array structure.
*/
static
void nfs_readdir_rapages_init(nfs_readdir_descriptor_t *desc)
{
struct nfs_cache_array *array;
int max_rapages = NFS_MAX_READDIR_RAPAGES;
int index;
for (index = 0; index < max_rapages; index++) {
array = kmap_atomic(desc->pvec.pages[index]);
memset(array, 0, sizeof(struct nfs_cache_array));
array->eof_index = -1;
kunmap_atomic(array);
}
}
static
int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page, struct inode *inode)
{
@ -655,12 +610,6 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
int status = -ENOMEM;
unsigned int array_size = ARRAY_SIZE(pages);
/*
* This means we hit readdir rdpages miss, the preallocated rdpages
* are useless, the preallocate rdpages should be reinitialized.
*/
nfs_readdir_rapages_init(desc);
entry.prev_cookie = 0;
entry.cookie = desc->last_cookie;
entry.eof = 0;
@ -721,24 +670,9 @@ int nfs_readdir_filler(void *data, struct page* page)
struct inode *inode = file_inode(desc->file);
int ret;
/*
* If desc->page_index in range desc->pvec.index and
* desc->pvec.index + desc->pvec.nr, we get readdir cache hit.
*/
if (desc->page_index >= desc->pvec.index &&
desc->page_index < (desc->pvec.index + desc->pvec.nr)) {
/*
* page and desc->pvec.pages[x] are valid, don't need to check
* whether or not to be NULL.
*/
copy_highpage(page, desc->pvec.pages[desc->page_index - desc->pvec.index]);
ret = 0;
} else {
ret = nfs_readdir_xdr_to_array(desc, page, inode);
if (ret < 0)
goto error;
}
ret = nfs_readdir_xdr_to_array(desc, page, inode);
if (ret < 0)
goto error;
SetPageUptodate(page);
if (invalidate_inode_pages2_range(inode->i_mapping, page->index + 1, -1) < 0) {
@ -903,7 +837,6 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
*desc = &my_desc;
struct nfs_open_dir_context *dir_ctx = file->private_data;
int res = 0;
int max_rapages = NFS_MAX_READDIR_RAPAGES;
dfprintk(FILE, "NFS: readdir(%pD2) starting at cookie %llu\n",
file, (long long)ctx->pos);
@ -923,12 +856,6 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
desc->decode = NFS_PROTO(inode)->decode_dirent;
desc->plus = nfs_use_readdirplus(inode, ctx);
res = nfs_readdir_alloc_pages(desc->pvec.pages, max_rapages);
if (res < 0)
return -ENOMEM;
nfs_readdir_rapages_init(desc);
if (ctx->pos == 0 || nfs_attribute_cache_expired(inode))
res = nfs_revalidate_mapping(inode, file->f_mapping);
if (res < 0)
@ -964,7 +891,6 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
break;
} while (!desc->eof);
out:
nfs_readdir_free_pages(desc->pvec.pages, max_rapages);
if (res > 0)
res = 0;
dfprintk(FILE, "NFS: readdir(%pD2) returns %d\n", file, res);

26
fs/nfs/flexfilelayout/flexfilelayout.c
View File

@ -934,6 +934,10 @@ ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio,
if (pgio->pg_error < 0)
return;
out_mds:
trace_pnfs_mds_fallback_pg_init_read(pgio->pg_inode,
0, NFS4_MAX_UINT64, IOMODE_READ,
NFS_I(pgio->pg_inode)->layout,
pgio->pg_lseg);
pnfs_put_lseg(pgio->pg_lseg);
pgio->pg_lseg = NULL;
nfs_pageio_reset_read_mds(pgio);
@ -1000,6 +1004,10 @@ ff_layout_pg_init_write(struct nfs_pageio_descriptor *pgio,
return;
out_mds:
trace_pnfs_mds_fallback_pg_init_write(pgio->pg_inode,
0, NFS4_MAX_UINT64, IOMODE_RW,
NFS_I(pgio->pg_inode)->layout,
pgio->pg_lseg);
pnfs_put_lseg(pgio->pg_lseg);
pgio->pg_lseg = NULL;
nfs_pageio_reset_write_mds(pgio);
@ -1026,6 +1034,10 @@ ff_layout_pg_get_mirror_count_write(struct nfs_pageio_descriptor *pgio,
if (pgio->pg_lseg)
return FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg);
trace_pnfs_mds_fallback_pg_get_mirror_count(pgio->pg_inode,
0, NFS4_MAX_UINT64, IOMODE_RW,
NFS_I(pgio->pg_inode)->layout,
pgio->pg_lseg);
/* no lseg means that pnfs is not in use, so no mirroring here */
nfs_pageio_reset_write_mds(pgio);
out:
@ -1075,6 +1087,10 @@ static void ff_layout_reset_write(struct nfs_pgio_header *hdr, bool retry_pnfs)
hdr->args.count,
(unsigned long long)hdr->args.offset);
trace_pnfs_mds_fallback_write_done(hdr->inode,
hdr->args.offset, hdr->args.count,
IOMODE_RW, NFS_I(hdr->inode)->layout,
hdr->lseg);
task->tk_status = pnfs_write_done_resend_to_mds(hdr);
}
}
@ -1094,6 +1110,10 @@ static void ff_layout_reset_read(struct nfs_pgio_header *hdr)
hdr->args.count,
(unsigned long long)hdr->args.offset);
trace_pnfs_mds_fallback_read_done(hdr->inode,
hdr->args.offset, hdr->args.count,
IOMODE_READ, NFS_I(hdr->inode)->layout,
hdr->lseg);
task->tk_status = pnfs_read_done_resend_to_mds(hdr);
}
}
@ -1827,6 +1847,9 @@ ff_layout_read_pagelist(struct nfs_pgio_header *hdr)
out_failed:
if (ff_layout_avoid_mds_available_ds(lseg))
return PNFS_TRY_AGAIN;
trace_pnfs_mds_fallback_read_pagelist(hdr->inode,
hdr->args.offset, hdr->args.count,
IOMODE_READ, NFS_I(hdr->inode)->layout, lseg);
return PNFS_NOT_ATTEMPTED;
}
@ -1892,6 +1915,9 @@ ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync)
out_failed:
if (ff_layout_avoid_mds_available_ds(lseg))
return PNFS_TRY_AGAIN;
trace_pnfs_mds_fallback_write_pagelist(hdr->inode,
hdr->args.offset, hdr->args.count,
IOMODE_RW, NFS_I(hdr->inode)->layout, lseg);
return PNFS_NOT_ATTEMPTED;
}

2
fs/nfs/flexfilelayout/flexfilelayoutdev.c
View File

@ -257,7 +257,7 @@ int ff_layout_track_ds_error(struct nfs4_flexfile_layout *flo,
if (status == 0)
return 0;
if (mirror->mirror_ds == NULL)
if (IS_ERR_OR_NULL(mirror->mirror_ds))
return -EINVAL;
dserr = kmalloc(sizeof(*dserr), gfp_flags);

30
fs/nfs/inode.c
View File

@ -51,6 +51,7 @@
#include "pnfs.h"
#include "nfs.h"
#include "netns.h"
#include "sysfs.h"
#include "nfstrace.h"
@ -208,7 +209,7 @@ static void nfs_set_cache_invalid(struct inode *inode, unsigned long flags)
}
if (inode->i_mapping->nrpages == 0)
flags &= ~NFS_INO_INVALID_DATA;
flags &= ~(NFS_INO_INVALID_DATA|NFS_INO_DATA_INVAL_DEFER);
nfsi->cache_validity |= flags;
if (flags & NFS_INO_INVALID_DATA)
nfs_fscache_invalidate(inode);
@ -652,7 +653,8 @@ static int nfs_vmtruncate(struct inode * inode, loff_t offset)
i_size_write(inode, offset);
/* Optimisation */
if (offset == 0)
NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_DATA;
NFS_I(inode)->cache_validity &= ~(NFS_INO_INVALID_DATA |
NFS_INO_DATA_INVAL_DEFER);
NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_SIZE;
spin_unlock(&inode->i_lock);
@ -1032,6 +1034,10 @@ void nfs_inode_attach_open_context(struct nfs_open_context *ctx)
struct nfs_inode *nfsi = NFS_I(inode);
spin_lock(&inode->i_lock);
if (list_empty(&nfsi->open_files) &&
(nfsi->cache_validity & NFS_INO_DATA_INVAL_DEFER))
nfsi->cache_validity |= NFS_INO_INVALID_DATA |
NFS_INO_REVAL_FORCED;
list_add_tail_rcu(&ctx->list, &nfsi->open_files);
spin_unlock(&inode->i_lock);
}
@ -1100,6 +1106,7 @@ int nfs_open(struct inode *inode, struct file *filp)
nfs_fscache_open_file(inode, filp);
return 0;
}
EXPORT_SYMBOL_GPL(nfs_open);
/*
* This function is called whenever some part of NFS notices that
@ -1312,7 +1319,8 @@ int nfs_revalidate_mapping(struct inode *inode,
set_bit(NFS_INO_INVALIDATING, bitlock);
smp_wmb();
nfsi->cache_validity &= ~NFS_INO_INVALID_DATA;
nfsi->cache_validity &= ~(NFS_INO_INVALID_DATA|
NFS_INO_DATA_INVAL_DEFER);
spin_unlock(&inode->i_lock);
trace_nfs_invalidate_mapping_enter(inode);
ret = nfs_invalidate_mapping(inode, mapping);
@ -1870,7 +1878,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
dprintk("NFS: change_attr change on server for file %s/%ld\n",
inode->i_sb->s_id,
inode->i_ino);
}
} else if (!have_delegation)
nfsi->cache_validity |= NFS_INO_DATA_INVAL_DEFER;
inode_set_iversion_raw(inode, fattr->change_attr);
attr_changed = true;
}
@ -2159,12 +2168,8 @@ static int nfs_net_init(struct net *net)
static void nfs_net_exit(struct net *net)
{
struct nfs_net *nn = net_generic(net, nfs_net_id);
nfs_fs_proc_net_exit(net);
nfs_cleanup_cb_ident_idr(net);
WARN_ON_ONCE(!list_empty(&nn->nfs_client_list));
WARN_ON_ONCE(!list_empty(&nn->nfs_volume_list));
nfs_clients_exit(net);
}
static struct pernet_operations nfs_net_ops = {
@ -2181,6 +2186,10 @@ static int __init init_nfs_fs(void)
{
int err;
err = nfs_sysfs_init();
if (err < 0)
goto out10;
err = register_pernet_subsys(&nfs_net_ops);
if (err < 0)
goto out9;
@ -2244,6 +2253,8 @@ static int __init init_nfs_fs(void)
out8:
unregister_pernet_subsys(&nfs_net_ops);
out9:
nfs_sysfs_exit();
out10:
return err;
}
@ -2260,6 +2271,7 @@ static void __exit exit_nfs_fs(void)
unregister_nfs_fs();
nfs_fs_proc_exit();
nfsiod_stop();
nfs_sysfs_exit();
}
/* Not quite true; I just maintain it */

7
fs/nfs/internal.h
View File

@ -69,8 +69,7 @@ struct nfs_clone_mount {
* Maximum number of pages that readdir can use for creating
* a vmapped array of pages.
*/
#define NFS_MAX_READDIR_PAGES 64
#define NFS_MAX_READDIR_RAPAGES 8
#define NFS_MAX_READDIR_PAGES 8
struct nfs_client_initdata {
unsigned long init_flags;
@ -82,6 +81,7 @@ struct nfs_client_initdata {
struct nfs_subversion *nfs_mod;
int proto;
u32 minorversion;
unsigned int nconnect;
struct net *net;
const struct rpc_timeout *timeparms;
const struct cred *cred;
@ -123,6 +123,7 @@ struct nfs_parsed_mount_data {
char *export_path;
int port;
unsigned short protocol;
unsigned short nconnect;
} nfs_server;
void *lsm_opts;
@ -158,6 +159,7 @@ extern void nfs_umount(const struct nfs_mount_request *info);
/* client.c */
extern const struct rpc_program nfs_program;
extern void nfs_clients_init(struct net *net);
extern void nfs_clients_exit(struct net *net);
extern struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *);
int nfs_create_rpc_client(struct nfs_client *, const struct nfs_client_initdata *, rpc_authflavor_t);
struct nfs_client *nfs_get_client(const struct nfs_client_initdata *);
@ -170,7 +172,6 @@ int nfs_init_server_rpcclient(struct nfs_server *, const struct rpc_timeout *t,
struct nfs_server *nfs_alloc_server(void);
void nfs_server_copy_userdata(struct nfs_server *, struct nfs_server *);
extern void nfs_cleanup_cb_ident_idr(struct net *);
extern void nfs_put_client(struct nfs_client *);
extern void nfs_free_client(struct nfs_client *);
extern struct nfs_client *nfs4_find_client_ident(struct net *, int);

3
fs/nfs/netns.h
View File

@ -15,6 +15,8 @@ struct bl_dev_msg {
uint32_t major, minor;
};
struct nfs_netns_client;
struct nfs_net {
struct cache_detail *nfs_dns_resolve;
struct rpc_pipe *bl_device_pipe;
@ -29,6 +31,7 @@ struct nfs_net {
unsigned short nfs_callback_tcpport6;
int cb_users[NFS4_MAX_MINOR_VERSION + 1];
#endif
struct nfs_netns_client *nfs_client;
spinlock_t nfs_client_lock;
ktime_t boot_time;
#ifdef CONFIG_PROC_FS

2
fs/nfs/nfs2xdr.c
View File

@ -151,7 +151,7 @@ static int decode_stat(struct xdr_stream *xdr, enum nfs_stat *status)
return 0;
out_status:
*status = be32_to_cpup(p);
trace_nfs_xdr_status((int)*status);
trace_nfs_xdr_status(xdr, (int)*status);
return 0;
}

3
fs/nfs/nfs3client.c
View File

@ -102,6 +102,9 @@ struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv,
return ERR_PTR(-EINVAL);
cl_init.hostname = buf;
if (mds_clp->cl_nconnect > 1 && ds_proto == XPRT_TRANSPORT_TCP)
cl_init.nconnect = mds_clp->cl_nconnect;
if (mds_srv->flags & NFS_MOUNT_NORESVPORT)
set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);

2
fs/nfs/nfs3xdr.c
View File

@ -343,7 +343,7 @@ static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status)
return 0;
out_status:
*status = be32_to_cpup(p);
trace_nfs_xdr_status((int)*status);
trace_nfs_xdr_status(xdr, (int)*status);
return 0;
}

4
fs/nfs/nfs4_fs.h
View File

@ -312,12 +312,12 @@ extern int nfs4_set_rw_stateid(nfs4_stateid *stateid,
const struct nfs_lock_context *l_ctx,
fmode_t fmode);
extern int nfs4_proc_get_lease_time(struct nfs_client *clp,
struct nfs_fsinfo *fsinfo);
#if defined(CONFIG_NFS_V4_1)
extern int nfs41_sequence_done(struct rpc_task *, struct nfs4_sequence_res *);
extern int nfs4_proc_create_session(struct nfs_client *, const struct cred *);
extern int nfs4_proc_destroy_session(struct nfs4_session *, const struct cred *);
extern int nfs4_proc_get_lease_time(struct nfs_client *clp,
struct nfs_fsinfo *fsinfo);
extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data,
bool sync);
extern int nfs4_detect_session_trunking(struct nfs_client *clp,

14
fs/nfs/nfs4client.c
View File

@ -859,7 +859,8 @@ static int nfs4_set_client(struct nfs_server *server,
const size_t addrlen,
const char *ip_addr,
int proto, const struct rpc_timeout *timeparms,
u32 minorversion, struct net *net)
u32 minorversion, unsigned int nconnect,
struct net *net)
{
struct nfs_client_initdata cl_init = {
.hostname = hostname,
@ -875,6 +876,8 @@ static int nfs4_set_client(struct nfs_server *server,
};
struct nfs_client *clp;
if (minorversion > 0 && proto == XPRT_TRANSPORT_TCP)
cl_init.nconnect = nconnect;
if (server->flags & NFS_MOUNT_NORESVPORT)
set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
if (server->options & NFS_OPTION_MIGRATION)
@ -941,6 +944,9 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_server *mds_srv,
return ERR_PTR(-EINVAL);
cl_init.hostname = buf;
if (mds_clp->cl_nconnect > 1 && ds_proto == XPRT_TRANSPORT_TCP)
cl_init.nconnect = mds_clp->cl_nconnect;
if (mds_srv->flags & NFS_MOUNT_NORESVPORT)
__set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
@ -1074,6 +1080,7 @@ static int nfs4_init_server(struct nfs_server *server,
data->nfs_server.protocol,
&timeparms,
data->minorversion,
data->nfs_server.nconnect,
data->net);
if (error < 0)
return error;
@ -1163,6 +1170,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
XPRT_TRANSPORT_RDMA,
parent_server->client->cl_timeout,
parent_client->cl_mvops->minor_version,
parent_client->cl_nconnect,
parent_client->cl_net);
if (!error)
goto init_server;
@ -1176,6 +1184,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
XPRT_TRANSPORT_TCP,
parent_server->client->cl_timeout,
parent_client->cl_mvops->minor_version,
parent_client->cl_nconnect,
parent_client->cl_net);
if (error < 0)
goto error;
@ -1271,7 +1280,8 @@ int nfs4_update_server(struct nfs_server *server, const char *hostname,
set_bit(NFS_MIG_TSM_POSSIBLE, &server->mig_status);
error = nfs4_set_client(server, hostname, sap, salen, buf,
clp->cl_proto, clnt->cl_timeout,
clp->cl_minorversion, net);
clp->cl_minorversion,
clp->cl_nconnect, net);
clear_bit(NFS_MIG_TSM_POSSIBLE, &server->mig_status);
if (error != 0) {
nfs_server_insert_lists(server);

8
fs/nfs/nfs4file.c
View File

@ -49,7 +49,7 @@ nfs4_file_open(struct inode *inode, struct file *filp)
return err;
if ((openflags & O_ACCMODE) == 3)
openflags--;
return nfs_open(inode, filp);
/* We can't create new files here */
openflags &= ~(O_CREAT|O_EXCL);
@ -204,7 +204,11 @@ static loff_t nfs42_remap_file_range(struct file *src_file, loff_t src_off,
bool same_inode = false;
int ret;
if (remap_flags & ~(REMAP_FILE_DEDUP | REMAP_FILE_ADVISORY))
/* NFS does not support deduplication. */
if (remap_flags & REMAP_FILE_DEDUP)
return -EOPNOTSUPP;
if (remap_flags & ~REMAP_FILE_ADVISORY)
return -EINVAL;
/* check alignment w.r.t. clone_blksize */

80
fs/nfs/nfs4proc.c
View File

@ -428,6 +428,22 @@ static int nfs4_delay(long *timeout, bool interruptible)
return nfs4_delay_killable(timeout);
}
static const nfs4_stateid *
nfs4_recoverable_stateid(const nfs4_stateid *stateid)
{
if (!stateid)
return NULL;
switch (stateid->type) {
case NFS4_OPEN_STATEID_TYPE:
case NFS4_LOCK_STATEID_TYPE:
case NFS4_DELEGATION_STATEID_TYPE:
return stateid;
default:
break;
}
return NULL;
}
/* This is the error handling routine for processes that are allowed
* to sleep.
*/
@ -436,7 +452,7 @@ static int nfs4_do_handle_exception(struct nfs_server *server,
{
struct nfs_client *clp = server->nfs_client;
struct nfs4_state *state = exception->state;
const nfs4_stateid *stateid = exception->stateid;
const nfs4_stateid *stateid;
struct inode *inode = exception->inode;
int ret = errorcode;
@ -444,8 +460,9 @@ static int nfs4_do_handle_exception(struct nfs_server *server,
exception->recovering = 0;
exception->retry = 0;
stateid = nfs4_recoverable_stateid(exception->stateid);
if (stateid == NULL && state != NULL)
stateid = &state->stateid;
stateid = nfs4_recoverable_stateid(&state->stateid);
switch(errorcode) {
case 0:
@ -1165,6 +1182,18 @@ static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server,
return true;
}
static fmode_t _nfs4_ctx_to_accessmode(const struct nfs_open_context *ctx)
{
return ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC);
}
static fmode_t _nfs4_ctx_to_openmode(const struct nfs_open_context *ctx)
{
fmode_t ret = ctx->mode & (FMODE_READ|FMODE_WRITE);
return (ctx->mode & FMODE_EXEC) ? FMODE_READ | ret : ret;
}
static u32
nfs4_map_atomic_open_share(struct nfs_server *server,
fmode_t fmode, int openflags)
@ -2900,14 +2929,13 @@ static unsigned nfs4_exclusive_attrset(struct nfs4_opendata *opendata,
}
static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
fmode_t fmode,
int flags,
struct nfs_open_context *ctx)
int flags, struct nfs_open_context *ctx)
{
struct nfs4_state_owner *sp = opendata->owner;
struct nfs_server *server = sp->so_server;
struct dentry *dentry;
struct nfs4_state *state;
fmode_t acc_mode = _nfs4_ctx_to_accessmode(ctx);
unsigned int seq;
int ret;
@ -2946,7 +2974,8 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
/* Parse layoutget results before we check for access */
pnfs_parse_lgopen(state->inode, opendata->lgp, ctx);
ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags);
ret = nfs4_opendata_access(sp->so_cred, opendata, state,
acc_mode, flags);
if (ret != 0)
goto out;
@ -2978,7 +3007,7 @@ static int _nfs4_do_open(struct inode *dir,
struct dentry *dentry = ctx->dentry;
const struct cred *cred = ctx->cred;
struct nfs4_threshold **ctx_th = &ctx->mdsthreshold;
fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC);
fmode_t fmode = _nfs4_ctx_to_openmode(ctx);
enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL;
struct iattr *sattr = c->sattr;
struct nfs4_label *label = c->label;
@ -3024,7 +3053,7 @@ static int _nfs4_do_open(struct inode *dir,
if (d_really_is_positive(dentry))
opendata->state = nfs4_get_open_state(d_inode(dentry), sp);
status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx);
status = _nfs4_open_and_get_state(opendata, flags, ctx);
if (status != 0)
goto err_free_label;
state = ctx->state;
@ -3594,9 +3623,9 @@ static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync)
if (ctx->state == NULL)
return;
if (is_sync)
nfs4_close_sync(ctx->state, ctx->mode);
nfs4_close_sync(ctx->state, _nfs4_ctx_to_openmode(ctx));
else
nfs4_close_state(ctx->state, ctx->mode);
nfs4_close_state(ctx->state, _nfs4_ctx_to_openmode(ctx));
}
#define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL)
@ -5980,7 +6009,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
.rpc_message = &msg,
.callback_ops = &nfs4_setclientid_ops,
.callback_data = &setclientid,
.flags = RPC_TASK_TIMEOUT,
.flags = RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN,
};
int status;
@ -6046,7 +6075,8 @@ int nfs4_proc_setclientid_confirm(struct nfs_client *clp,
dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n",
clp->cl_rpcclient->cl_auth->au_ops->au_name,
clp->cl_clientid);
status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
status = rpc_call_sync(clp->cl_rpcclient, &msg,
RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN);
trace_nfs4_setclientid_confirm(clp, status);
dprintk("NFS reply setclientid_confirm: %d\n", status);
return status;
@ -7627,7 +7657,7 @@ static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct
NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg);
status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args,
&res.seq_res, 0);
&res.seq_res, RPC_TASK_NO_ROUND_ROBIN);
dprintk("NFS reply secinfo: %d\n", status);
put_cred(cred);
@ -7965,7 +7995,7 @@ nfs4_run_exchange_id(struct nfs_client *clp, const struct cred *cred,
.rpc_client = clp->cl_rpcclient,
.callback_ops = &nfs4_exchange_id_call_ops,
.rpc_message = &msg,
.flags = RPC_TASK_TIMEOUT,
.flags = RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN,
};
struct nfs41_exchange_id_data *calldata;
int status;
@ -8190,7 +8220,8 @@ static int _nfs4_proc_destroy_clientid(struct nfs_client *clp,
};
int status;
status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
status = rpc_call_sync(clp->cl_rpcclient, &msg,
RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN);
trace_nfs4_destroy_clientid(clp, status);
if (status)
dprintk("NFS: Got error %d from the server %s on "
@ -8241,6 +8272,8 @@ int nfs4_destroy_clientid(struct nfs_client *clp)
return ret;
}
#endif /* CONFIG_NFS_V4_1 */
struct nfs4_get_lease_time_data {
struct nfs4_get_lease_time_args *args;
struct nfs4_get_lease_time_res *res;
@ -8273,7 +8306,7 @@ static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata)
(struct nfs4_get_lease_time_data *)calldata;
dprintk("--> %s\n", __func__);
if (!nfs41_sequence_done(task, &data->res->lr_seq_res))
if (!nfs4_sequence_done(task, &data->res->lr_seq_res))
return;
switch (task->tk_status) {
case -NFS4ERR_DELAY:
@ -8331,6 +8364,8 @@ int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo)
return status;
}
#ifdef CONFIG_NFS_V4_1
/*
* Initialize the values to be used by the client in CREATE_SESSION
* If nfs4_init_session set the fore channel request and response sizes,
@ -8345,6 +8380,7 @@ static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args,
{
unsigned int max_rqst_sz, max_resp_sz;
unsigned int max_bc_payload = rpc_max_bc_payload(clnt);
unsigned int max_bc_slots = rpc_num_bc_slots(clnt);
max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead;
max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead;
@ -8367,6 +8403,8 @@ static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args,
args->bc_attrs.max_resp_sz_cached = 0;
args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS;
args->bc_attrs.max_reqs = max_t(unsigned short, max_session_cb_slots, 1);
if (args->bc_attrs.max_reqs > max_bc_slots)
args->bc_attrs.max_reqs = max_bc_slots;
dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
"max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
@ -8469,7 +8507,8 @@ static int _nfs4_proc_create_session(struct nfs_client *clp,
nfs4_init_channel_attrs(&args, clp->cl_rpcclient);
args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN);
status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
status = rpc_call_sync(session->clp->cl_rpcclient, &msg,
RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN);
trace_nfs4_create_session(clp, status);
switch (status) {
@ -8545,7 +8584,8 @@ int nfs4_proc_destroy_session(struct nfs4_session *session,
if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state))
return 0;
status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT);
status = rpc_call_sync(session->clp->cl_rpcclient, &msg,
RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN);
trace_nfs4_destroy_session(session->clp, status);
if (status)
@ -8799,7 +8839,7 @@ static int nfs41_proc_reclaim_complete(struct nfs_client *clp,
.rpc_client = clp->cl_rpcclient,
.rpc_message = &msg,
.callback_ops = &nfs4_reclaim_complete_call_ops,
.flags = RPC_TASK_ASYNC,
.flags = RPC_TASK_ASYNC | RPC_TASK_NO_ROUND_ROBIN,
};
int status = -ENOMEM;
@ -9318,7 +9358,7 @@ _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle,
dprintk("--> %s\n", __func__);
status = nfs4_call_sync(clnt, server, &msg, &args.seq_args,
&res.seq_res, 0);
&res.seq_res, RPC_TASK_NO_ROUND_ROBIN);
dprintk("<-- %s status=%d\n", __func__, status);
put_cred(cred);

49
fs/nfs/nfs4state.c
View File

@ -87,6 +87,27 @@ const nfs4_stateid current_stateid = {
static DEFINE_MUTEX(nfs_clid_init_mutex);
static int nfs4_setup_state_renewal(struct nfs_client *clp)
{
int status;
struct nfs_fsinfo fsinfo;
unsigned long now;
if (!test_bit(NFS_CS_CHECK_LEASE_TIME, &clp->cl_res_state)) {
nfs4_schedule_state_renewal(clp);
return 0;
}
now = jiffies;
status = nfs4_proc_get_lease_time(clp, &fsinfo);
if (status == 0) {
nfs4_set_lease_period(clp, fsinfo.lease_time * HZ, now);
nfs4_schedule_state_renewal(clp);
}
return status;
}
int nfs4_init_clientid(struct nfs_client *clp, const struct cred *cred)
{
struct nfs4_setclientid_res clid = {
@ -114,7 +135,7 @@ int nfs4_init_clientid(struct nfs_client *clp, const struct cred *cred)
if (status != 0)
goto out;
clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state);
nfs4_schedule_state_renewal(clp);
nfs4_setup_state_renewal(clp);
out:
return status;
}
@ -286,34 +307,13 @@ static int nfs4_begin_drain_session(struct nfs_client *clp)
#if defined(CONFIG_NFS_V4_1)
static int nfs41_setup_state_renewal(struct nfs_client *clp)
{
int status;
struct nfs_fsinfo fsinfo;
unsigned long now;
if (!test_bit(NFS_CS_CHECK_LEASE_TIME, &clp->cl_res_state)) {
nfs4_schedule_state_renewal(clp);
return 0;
}
now = jiffies;
status = nfs4_proc_get_lease_time(clp, &fsinfo);
if (status == 0) {
nfs4_set_lease_period(clp, fsinfo.lease_time * HZ, now);
nfs4_schedule_state_renewal(clp);
}
return status;
}
static void nfs41_finish_session_reset(struct nfs_client *clp)
{
clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state);
clear_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state);
/* create_session negotiated new slot table */
clear_bit(NFS4CLNT_BIND_CONN_TO_SESSION, &clp->cl_state);
nfs41_setup_state_renewal(clp);
nfs4_setup_state_renewal(clp);
}
int nfs41_init_clientid(struct nfs_client *clp, const struct cred *cred)
@ -1064,8 +1064,7 @@ int nfs4_select_rw_stateid(struct nfs4_state *state,
* choose to use.
*/
goto out;
nfs4_copy_open_stateid(dst, state);
ret = 0;
ret = nfs4_copy_open_stateid(dst, state) ? 0 : -EAGAIN;
out:
if (nfs_server_capable(state->inode, NFS_CAP_STATEID_NFSV41))
dst->seqid = 0;

8
fs/nfs/nfs4trace.c
View File

@ -16,4 +16,12 @@
EXPORT_TRACEPOINT_SYMBOL_GPL(nfs4_pnfs_read);
EXPORT_TRACEPOINT_SYMBOL_GPL(nfs4_pnfs_write);
EXPORT_TRACEPOINT_SYMBOL_GPL(nfs4_pnfs_commit_ds);
EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_pg_init_read);
EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_pg_init_write);
EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_pg_get_mirror_count);
EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_read_done);
EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_write_done);
EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_read_pagelist);
EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_write_pagelist);
#endif

283
fs/nfs/nfs4trace.h
View File

@ -156,7 +156,7 @@ TRACE_DEFINE_ENUM(NFS4ERR_WRONG_TYPE);
TRACE_DEFINE_ENUM(NFS4ERR_XDEV);
#define show_nfsv4_errors(error) \
__print_symbolic(-(error), \
__print_symbolic(error, \
{ NFS4_OK, "OK" }, \
/* Mapped by nfs4_stat_to_errno() */ \
{ EPERM, "EPERM" }, \
@ -348,7 +348,7 @@ DECLARE_EVENT_CLASS(nfs4_clientid_event,
TP_STRUCT__entry(
__string(dstaddr, clp->cl_hostname)
__field(int, error)
__field(unsigned long, error)
),
TP_fast_assign(
@ -357,8 +357,8 @@ DECLARE_EVENT_CLASS(nfs4_clientid_event,
),
TP_printk(
"error=%d (%s) dstaddr=%s",
__entry->error,
"error=%ld (%s) dstaddr=%s",
-__entry->error,
show_nfsv4_errors(__entry->error),
__get_str(dstaddr)
)
@ -420,7 +420,7 @@ TRACE_EVENT(nfs4_sequence_done,
__field(unsigned int, highest_slotid)
__field(unsigned int, target_highest_slotid)
__field(unsigned int, status_flags)
__field(int, error)
__field(unsigned long, error)
),
TP_fast_assign(
@ -435,10 +435,10 @@ TRACE_EVENT(nfs4_sequence_done,
__entry->error = res->sr_status;
),
TP_printk(
"error=%d (%s) session=0x%08x slot_nr=%u seq_nr=%u "
"error=%ld (%s) session=0x%08x slot_nr=%u seq_nr=%u "
"highest_slotid=%u target_highest_slotid=%u "
"status_flags=%u (%s)",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
__entry->session,
__entry->slot_nr,
@ -467,7 +467,7 @@ TRACE_EVENT(nfs4_cb_sequence,
__field(unsigned int, seq_nr)
__field(unsigned int, highest_slotid)
__field(unsigned int, cachethis)
__field(int, error)
__field(unsigned long, error)
),
TP_fast_assign(
@ -476,13 +476,13 @@ TRACE_EVENT(nfs4_cb_sequence,
__entry->seq_nr = args->csa_sequenceid;
__entry->highest_slotid = args->csa_highestslotid;
__entry->cachethis = args->csa_cachethis;
__entry->error = -be32_to_cpu(status);
__entry->error = be32_to_cpu(status);
),
TP_printk(
"error=%d (%s) session=0x%08x slot_nr=%u seq_nr=%u "
"error=%ld (%s) session=0x%08x slot_nr=%u seq_nr=%u "
"highest_slotid=%u",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
__entry->session,
__entry->slot_nr,
@ -490,6 +490,44 @@ TRACE_EVENT(nfs4_cb_sequence,
__entry->highest_slotid
)
);
TRACE_EVENT(nfs4_cb_seqid_err,
TP_PROTO(
const struct cb_sequenceargs *args,
__be32 status
),
TP_ARGS(args, status),
TP_STRUCT__entry(
__field(unsigned int, session)
__field(unsigned int, slot_nr)
__field(unsigned int, seq_nr)
__field(unsigned int, highest_slotid)
__field(unsigned int, cachethis)
__field(unsigned long, error)
),
TP_fast_assign(
__entry->session = nfs_session_id_hash(&args->csa_sessionid);
__entry->slot_nr = args->csa_slotid;
__entry->seq_nr = args->csa_sequenceid;
__entry->highest_slotid = args->csa_highestslotid;
__entry->cachethis = args->csa_cachethis;
__entry->error = be32_to_cpu(status);
),
TP_printk(
"error=%ld (%s) session=0x%08x slot_nr=%u seq_nr=%u "
"highest_slotid=%u",
-__entry->error,
show_nfsv4_errors(__entry->error),
__entry->session,
__entry->slot_nr,
__entry->seq_nr,
__entry->highest_slotid
)
);
#endif /* CONFIG_NFS_V4_1 */
TRACE_EVENT(nfs4_setup_sequence,
@ -526,26 +564,37 @@ TRACE_EVENT(nfs4_setup_sequence,
TRACE_EVENT(nfs4_xdr_status,
TP_PROTO(
const struct xdr_stream *xdr,
u32 op,
int error
),
TP_ARGS(op, error),
TP_ARGS(xdr, op, error),
TP_STRUCT__entry(
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(u32, xid)
__field(u32, op)
__field(int, error)
__field(unsigned long, error)
),
TP_fast_assign(
const struct rpc_rqst *rqstp = xdr->rqst;
const struct rpc_task *task = rqstp->rq_task;
__entry->task_id = task->tk_pid;
__entry->client_id = task->tk_client->cl_clid;
__entry->xid = be32_to_cpu(rqstp->rq_xid);
__entry->op = op;
__entry->error = -error;
__entry->error = error;
),
TP_printk(
"operation %d: nfs status %d (%s)",
__entry->op,
__entry->error, show_nfsv4_errors(__entry->error)
"task:%u@%d xid=0x%08x error=%ld (%s) operation=%u",
__entry->task_id, __entry->client_id, __entry->xid,
-__entry->error, show_nfsv4_errors(__entry->error),
__entry->op
)
);
@ -559,7 +608,7 @@ DECLARE_EVENT_CLASS(nfs4_open_event,
TP_ARGS(ctx, flags, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned long, error)
__field(unsigned int, flags)
__field(unsigned int, fmode)
__field(dev_t, dev)
@ -577,7 +626,7 @@ DECLARE_EVENT_CLASS(nfs4_open_event,
const struct nfs4_state *state = ctx->state;
const struct inode *inode = NULL;
__entry->error = error;
__entry->error = -error;
__entry->flags = flags;
__entry->fmode = (__force unsigned int)ctx->mode;
__entry->dev = ctx->dentry->d_sb->s_dev;
@ -609,11 +658,11 @@ DECLARE_EVENT_CLASS(nfs4_open_event,
),
TP_printk(
"error=%d (%s) flags=%d (%s) fmode=%s "
"error=%ld (%s) flags=%d (%s) fmode=%s "
"fileid=%02x:%02x:%llu fhandle=0x%08x "
"name=%02x:%02x:%llu/%s stateid=%d:0x%08x "
"openstateid=%d:0x%08x",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
__entry->flags,
show_open_flags(__entry->flags),
@ -695,7 +744,7 @@ TRACE_EVENT(nfs4_close,
__field(u32, fhandle)
__field(u64, fileid)
__field(unsigned int, fmode)
__field(int, error)
__field(unsigned long, error)
__field(int, stateid_seq)
__field(u32, stateid_hash)
),
@ -715,9 +764,9 @@ TRACE_EVENT(nfs4_close,
),
TP_printk(
"error=%d (%s) fmode=%s fileid=%02x:%02x:%llu "
"error=%ld (%s) fmode=%s fileid=%02x:%02x:%llu "
"fhandle=0x%08x openstateid=%d:0x%08x",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
__entry->fmode ? show_fmode_flags(__entry->fmode) :
"closed",
@ -757,7 +806,7 @@ DECLARE_EVENT_CLASS(nfs4_lock_event,
TP_ARGS(request, state, cmd, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned long, error)
__field(int, cmd)
__field(char, type)
__field(loff_t, start)
@ -787,10 +836,10 @@ DECLARE_EVENT_CLASS(nfs4_lock_event,
),
TP_printk(
"error=%d (%s) cmd=%s:%s range=%lld:%lld "
"error=%ld (%s) cmd=%s:%s range=%lld:%lld "
"fileid=%02x:%02x:%llu fhandle=0x%08x "
"stateid=%d:0x%08x",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
show_lock_cmd(__entry->cmd),
show_lock_type(__entry->type),
@ -827,7 +876,7 @@ TRACE_EVENT(nfs4_set_lock,
TP_ARGS(request, state, lockstateid, cmd, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned long, error)
__field(int, cmd)
__field(char, type)
__field(loff_t, start)
@ -863,10 +912,10 @@ TRACE_EVENT(nfs4_set_lock,
),
TP_printk(
"error=%d (%s) cmd=%s:%s range=%lld:%lld "
"error=%ld (%s) cmd=%s:%s range=%lld:%lld "
"fileid=%02x:%02x:%llu fhandle=0x%08x "
"stateid=%d:0x%08x lockstateid=%d:0x%08x",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
show_lock_cmd(__entry->cmd),
show_lock_type(__entry->type),
@ -932,7 +981,7 @@ TRACE_EVENT(nfs4_delegreturn_exit,
TP_STRUCT__entry(
__field(dev_t, dev)
__field(u32, fhandle)
__field(int, error)
__field(unsigned long, error)
__field(int, stateid_seq)
__field(u32, stateid_hash)
),
@ -948,9 +997,9 @@ TRACE_EVENT(nfs4_delegreturn_exit,
),
TP_printk(
"error=%d (%s) dev=%02x:%02x fhandle=0x%08x "
"error=%ld (%s) dev=%02x:%02x fhandle=0x%08x "
"stateid=%d:0x%08x",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->fhandle,
@ -969,7 +1018,7 @@ DECLARE_EVENT_CLASS(nfs4_test_stateid_event,
TP_ARGS(state, lsp, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned long, error)
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
@ -991,9 +1040,9 @@ DECLARE_EVENT_CLASS(nfs4_test_stateid_event,
),
TP_printk(
"error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"stateid=%d:0x%08x",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
@ -1026,7 +1075,7 @@ DECLARE_EVENT_CLASS(nfs4_lookup_event,
TP_STRUCT__entry(
__field(dev_t, dev)
__field(int, error)
__field(unsigned long, error)
__field(u64, dir)
__string(name, name->name)
),
@ -1034,13 +1083,13 @@ DECLARE_EVENT_CLASS(nfs4_lookup_event,
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->error = error;
__entry->error = -error;
__assign_str(name, name->name);
),
TP_printk(
"error=%d (%s) name=%02x:%02x:%llu/%s",
__entry->error,
"error=%ld (%s) name=%02x:%02x:%llu/%s",
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
@ -1076,7 +1125,7 @@ TRACE_EVENT(nfs4_lookupp,
TP_STRUCT__entry(
__field(dev_t, dev)
__field(u64, ino)
__field(int, error)
__field(unsigned long, error)
),
TP_fast_assign(
@ -1086,8 +1135,8 @@ TRACE_EVENT(nfs4_lookupp,
),
TP_printk(
"error=%d (%s) inode=%02x:%02x:%llu",
__entry->error,
"error=%ld (%s) inode=%02x:%02x:%llu",
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->ino
@ -1107,7 +1156,7 @@ TRACE_EVENT(nfs4_rename,
TP_STRUCT__entry(
__field(dev_t, dev)
__field(int, error)
__field(unsigned long, error)
__field(u64, olddir)
__string(oldname, oldname->name)
__field(u64, newdir)
@ -1124,9 +1173,9 @@ TRACE_EVENT(nfs4_rename,
),
TP_printk(
"error=%d (%s) oldname=%02x:%02x:%llu/%s "
"error=%ld (%s) oldname=%02x:%02x:%llu/%s "
"newname=%02x:%02x:%llu/%s",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->olddir,
@ -1149,19 +1198,19 @@ DECLARE_EVENT_CLASS(nfs4_inode_event,
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
__field(int, error)
__field(unsigned long, error)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = NFS_FILEID(inode);
__entry->fhandle = nfs_fhandle_hash(NFS_FH(inode));
__entry->error = error;
__entry->error = error < 0 ? -error : 0;
),
TP_printk(
"error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x",
__entry->error,
"error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x",
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
@ -1200,7 +1249,7 @@ DECLARE_EVENT_CLASS(nfs4_inode_stateid_event,
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
__field(int, error)
__field(unsigned long, error)
__field(int, stateid_seq)
__field(u32, stateid_hash)
),
@ -1217,9 +1266,9 @@ DECLARE_EVENT_CLASS(nfs4_inode_stateid_event,
),
TP_printk(
"error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"stateid=%d:0x%08x",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
@ -1257,7 +1306,7 @@ DECLARE_EVENT_CLASS(nfs4_getattr_event,
__field(u32, fhandle)
__field(u64, fileid)
__field(unsigned int, valid)
__field(int, error)
__field(unsigned long, error)
),
TP_fast_assign(
@ -1269,9 +1318,9 @@ DECLARE_EVENT_CLASS(nfs4_getattr_event,
),
TP_printk(
"error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"valid=%s",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
@ -1304,7 +1353,7 @@ DECLARE_EVENT_CLASS(nfs4_inode_callback_event,
TP_ARGS(clp, fhandle, inode, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned long, error)
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
@ -1325,9 +1374,9 @@ DECLARE_EVENT_CLASS(nfs4_inode_callback_event,
),
TP_printk(
"error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"dstaddr=%s",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
@ -1359,7 +1408,7 @@ DECLARE_EVENT_CLASS(nfs4_inode_stateid_callback_event,
TP_ARGS(clp, fhandle, inode, stateid, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned long, error)
__field(dev_t, dev)
__field(u32, fhandle)
__field(u64, fileid)
@ -1386,9 +1435,9 @@ DECLARE_EVENT_CLASS(nfs4_inode_stateid_callback_event,
),
TP_printk(
"error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"stateid=%d:0x%08x dstaddr=%s",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
@ -1422,7 +1471,7 @@ DECLARE_EVENT_CLASS(nfs4_idmap_event,
TP_ARGS(name, len, id, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned long, error)
__field(u32, id)
__dynamic_array(char, name, len > 0 ? len + 1 : 1)
),
@ -1437,8 +1486,8 @@ DECLARE_EVENT_CLASS(nfs4_idmap_event,
),
TP_printk(
"error=%d id=%u name=%s",
__entry->error,
"error=%ld (%s) id=%u name=%s",
-__entry->error, show_nfsv4_errors(__entry->error),
__entry->id,
__get_str(name)
)
@ -1471,7 +1520,7 @@ DECLARE_EVENT_CLASS(nfs4_read_event,
__field(u64, fileid)
__field(loff_t, offset)
__field(size_t, count)
__field(int, error)
__field(unsigned long, error)
__field(int, stateid_seq)
__field(u32, stateid_hash)
),
@ -1485,7 +1534,7 @@ DECLARE_EVENT_CLASS(nfs4_read_event,
__entry->fhandle = nfs_fhandle_hash(NFS_FH(inode));
__entry->offset = hdr->args.offset;
__entry->count = hdr->args.count;
__entry->error = error;
__entry->error = error < 0 ? -error : 0;
__entry->stateid_seq =
be32_to_cpu(state->stateid.seqid);
__entry->stateid_hash =
@ -1493,9 +1542,9 @@ DECLARE_EVENT_CLASS(nfs4_read_event,
),
TP_printk(
"error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"offset=%lld count=%zu stateid=%d:0x%08x",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
@ -1531,7 +1580,7 @@ DECLARE_EVENT_CLASS(nfs4_write_event,
__field(u64, fileid)
__field(loff_t, offset)
__field(size_t, count)
__field(int, error)
__field(unsigned long, error)
__field(int, stateid_seq)
__field(u32, stateid_hash)
),
@ -1545,7 +1594,7 @@ DECLARE_EVENT_CLASS(nfs4_write_event,
__entry->fhandle = nfs_fhandle_hash(NFS_FH(inode));
__entry->offset = hdr->args.offset;
__entry->count = hdr->args.count;
__entry->error = error;
__entry->error = error < 0 ? -error : 0;
__entry->stateid_seq =
be32_to_cpu(state->stateid.seqid);
__entry->stateid_hash =
@ -1553,9 +1602,9 @@ DECLARE_EVENT_CLASS(nfs4_write_event,
),
TP_printk(
"error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"offset=%lld count=%zu stateid=%d:0x%08x",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
@ -1592,7 +1641,7 @@ DECLARE_EVENT_CLASS(nfs4_commit_event,
__field(u64, fileid)
__field(loff_t, offset)
__field(size_t, count)
__field(int, error)
__field(unsigned long, error)
),
TP_fast_assign(
@ -1606,9 +1655,9 @@ DECLARE_EVENT_CLASS(nfs4_commit_event,
),
TP_printk(
"error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"offset=%lld count=%zu",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
@ -1656,7 +1705,7 @@ TRACE_EVENT(nfs4_layoutget,
__field(u32, iomode)
__field(u64, offset)
__field(u64, count)
__field(int, error)
__field(unsigned long, error)
__field(int, stateid_seq)
__field(u32, stateid_hash)
__field(int, layoutstateid_seq)
@ -1689,10 +1738,10 @@ TRACE_EVENT(nfs4_layoutget,
),
TP_printk(
"error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"iomode=%s offset=%llu count=%llu stateid=%d:0x%08x "
"layoutstateid=%d:0x%08x",
__entry->error,
-__entry->error,
show_nfsv4_errors(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
@ -1722,6 +1771,7 @@ TRACE_DEFINE_ENUM(PNFS_UPDATE_LAYOUT_BLOCKED);
TRACE_DEFINE_ENUM(PNFS_UPDATE_LAYOUT_INVALID_OPEN);
TRACE_DEFINE_ENUM(PNFS_UPDATE_LAYOUT_RETRY);
TRACE_DEFINE_ENUM(PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET);
TRACE_DEFINE_ENUM(PNFS_UPDATE_LAYOUT_EXIT);
#define show_pnfs_update_layout_reason(reason) \
__print_symbolic(reason, \
@ -1737,7 +1787,8 @@ TRACE_DEFINE_ENUM(PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET);
{ PNFS_UPDATE_LAYOUT_BLOCKED, "layouts blocked" }, \
{ PNFS_UPDATE_LAYOUT_INVALID_OPEN, "invalid open" }, \
{ PNFS_UPDATE_LAYOUT_RETRY, "retrying" }, \
{ PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET, "sent layoutget" })
{ PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET, "sent layoutget" }, \
{ PNFS_UPDATE_LAYOUT_EXIT, "exit" })
TRACE_EVENT(pnfs_update_layout,
TP_PROTO(struct inode *inode,
@ -1796,6 +1847,78 @@ TRACE_EVENT(pnfs_update_layout,
)
);
DECLARE_EVENT_CLASS(pnfs_layout_event,
TP_PROTO(struct inode *inode,
loff_t pos,
u64 count,
enum pnfs_iomode iomode,
struct pnfs_layout_hdr *lo,
struct pnfs_layout_segment *lseg
),
TP_ARGS(inode, pos, count, iomode, lo, lseg),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(u64, fileid)
__field(u32, fhandle)
__field(loff_t, pos)
__field(u64, count)
__field(enum pnfs_iomode, iomode)
__field(int, layoutstateid_seq)
__field(u32, layoutstateid_hash)
__field(long, lseg)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = NFS_FILEID(inode);
__entry->fhandle = nfs_fhandle_hash(NFS_FH(inode));
__entry->pos = pos;
__entry->count = count;
__entry->iomode = iomode;
if (lo != NULL) {
__entry->layoutstateid_seq =
be32_to_cpu(lo->plh_stateid.seqid);
__entry->layoutstateid_hash =
nfs_stateid_hash(&lo->plh_stateid);
} else {
__entry->layoutstateid_seq = 0;
__entry->layoutstateid_hash = 0;
}
__entry->lseg = (long)lseg;
),
TP_printk(
"fileid=%02x:%02x:%llu fhandle=0x%08x "
"iomode=%s pos=%llu count=%llu "
"layoutstateid=%d:0x%08x lseg=0x%lx",
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
show_pnfs_iomode(__entry->iomode),
(unsigned long long)__entry->pos,
(unsigned long long)__entry->count,
__entry->layoutstateid_seq, __entry->layoutstateid_hash,
__entry->lseg
)
);
#define DEFINE_PNFS_LAYOUT_EVENT(name) \
DEFINE_EVENT(pnfs_layout_event, name, \
TP_PROTO(struct inode *inode, \
loff_t pos, \
u64 count, \
enum pnfs_iomode iomode, \
struct pnfs_layout_hdr *lo, \
struct pnfs_layout_segment *lseg \
), \
TP_ARGS(inode, pos, count, iomode, lo, lseg))
DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_pg_init_read);
DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_pg_init_write);
DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_pg_get_mirror_count);
DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_read_done);
DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_write_done);
DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_read_pagelist);
DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_write_pagelist);
#endif /* CONFIG_NFS_V4_1 */
#endif /* _TRACE_NFS4_H */

16
fs/nfs/nfs4xdr.c
View File

@ -837,6 +837,7 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
#define NFS4_dec_sequence_sz \
(compound_decode_hdr_maxsz + \
decode_sequence_maxsz)
#endif
#define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putrootfh_maxsz + \
@ -845,6 +846,7 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
decode_sequence_maxsz + \
decode_putrootfh_maxsz + \
decode_fsinfo_maxsz)
#if defined(CONFIG_NFS_V4_1)
#define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_reclaim_complete_maxsz)
@ -2957,6 +2959,8 @@ static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr,
encode_nops(&hdr);
}
#endif
/*
* a GET_LEASE_TIME request
*/
@ -2977,6 +2981,8 @@ static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req,
encode_nops(&hdr);
}
#ifdef CONFIG_NFS_V4_1
/*
* a RECLAIM_COMPLETE request
*/
@ -3187,7 +3193,7 @@ static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
return true;
out_status:
nfserr = be32_to_cpup(p);
trace_nfs4_xdr_status(opnum, nfserr);
trace_nfs4_xdr_status(xdr, opnum, nfserr);
*nfs_retval = nfs4_stat_to_errno(nfserr);
return true;
out_bad_operation:
@ -3427,7 +3433,7 @@ static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint
*res = be32_to_cpup(p);
bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME;
}
dprintk("%s: file size=%u\n", __func__, (unsigned int)*res);
dprintk("%s: lease time=%u\n", __func__, (unsigned int)*res);
return 0;
}
@ -7122,6 +7128,8 @@ static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp,
return status;
}
#endif
/*
* Decode GET_LEASE_TIME response
*/
@ -7143,6 +7151,8 @@ static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp,
return status;
}
#ifdef CONFIG_NFS_V4_1
/*
* Decode RECLAIM_COMPLETE response
*/
@ -7551,7 +7561,7 @@ const struct rpc_procinfo nfs4_procedures[] = {
PROC41(CREATE_SESSION, enc_create_session, dec_create_session),
PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session),
PROC41(SEQUENCE, enc_sequence, dec_sequence),
PROC41(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time),
PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete),
PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo),
PROC41(LAYOUTGET, enc_layoutget, dec_layoutget),

233
fs/nfs/nfstrace.h
View File

@ -11,6 +11,16 @@
#include <linux/tracepoint.h>
#include <linux/iversion.h>
TRACE_DEFINE_ENUM(DT_UNKNOWN);
TRACE_DEFINE_ENUM(DT_FIFO);
TRACE_DEFINE_ENUM(DT_CHR);
TRACE_DEFINE_ENUM(DT_DIR);
TRACE_DEFINE_ENUM(DT_BLK);
TRACE_DEFINE_ENUM(DT_REG);
TRACE_DEFINE_ENUM(DT_LNK);
TRACE_DEFINE_ENUM(DT_SOCK);
TRACE_DEFINE_ENUM(DT_WHT);
#define nfs_show_file_type(ftype) \
__print_symbolic(ftype, \
{ DT_UNKNOWN, "UNKNOWN" }, \
@ -23,25 +33,57 @@
{ DT_SOCK, "SOCK" }, \
{ DT_WHT, "WHT" })
TRACE_DEFINE_ENUM(NFS_INO_INVALID_DATA);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_ATIME);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_ACCESS);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_ACL);
TRACE_DEFINE_ENUM(NFS_INO_REVAL_PAGECACHE);
TRACE_DEFINE_ENUM(NFS_INO_REVAL_FORCED);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_LABEL);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_CHANGE);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_CTIME);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_MTIME);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_SIZE);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_OTHER);
#define nfs_show_cache_validity(v) \
__print_flags(v, "|", \
{ NFS_INO_INVALID_ATTR, "INVALID_ATTR" }, \
{ NFS_INO_INVALID_DATA, "INVALID_DATA" }, \
{ NFS_INO_INVALID_ATIME, "INVALID_ATIME" }, \
{ NFS_INO_INVALID_ACCESS, "INVALID_ACCESS" }, \
{ NFS_INO_INVALID_ACL, "INVALID_ACL" }, \
{ NFS_INO_REVAL_PAGECACHE, "REVAL_PAGECACHE" }, \
{ NFS_INO_REVAL_FORCED, "REVAL_FORCED" }, \
{ NFS_INO_INVALID_LABEL, "INVALID_LABEL" })
{ NFS_INO_INVALID_LABEL, "INVALID_LABEL" }, \
{ NFS_INO_INVALID_CHANGE, "INVALID_CHANGE" }, \
{ NFS_INO_INVALID_CTIME, "INVALID_CTIME" }, \
{ NFS_INO_INVALID_MTIME, "INVALID_MTIME" }, \
{ NFS_INO_INVALID_SIZE, "INVALID_SIZE" }, \
{ NFS_INO_INVALID_OTHER, "INVALID_OTHER" })
TRACE_DEFINE_ENUM(NFS_INO_ADVISE_RDPLUS);
TRACE_DEFINE_ENUM(NFS_INO_STALE);
TRACE_DEFINE_ENUM(NFS_INO_ACL_LRU_SET);
TRACE_DEFINE_ENUM(NFS_INO_INVALIDATING);
TRACE_DEFINE_ENUM(NFS_INO_FSCACHE);
TRACE_DEFINE_ENUM(NFS_INO_FSCACHE_LOCK);
TRACE_DEFINE_ENUM(NFS_INO_LAYOUTCOMMIT);
TRACE_DEFINE_ENUM(NFS_INO_LAYOUTCOMMITTING);
TRACE_DEFINE_ENUM(NFS_INO_LAYOUTSTATS);
TRACE_DEFINE_ENUM(NFS_INO_ODIRECT);
#define nfs_show_nfsi_flags(v) \
__print_flags(v, "|", \
{ 1 << NFS_INO_ADVISE_RDPLUS, "ADVISE_RDPLUS" }, \
{ 1 << NFS_INO_STALE, "STALE" }, \
{ 1 << NFS_INO_INVALIDATING, "INVALIDATING" }, \
{ 1 << NFS_INO_FSCACHE, "FSCACHE" }, \
{ 1 << NFS_INO_LAYOUTCOMMIT, "NEED_LAYOUTCOMMIT" }, \
{ 1 << NFS_INO_LAYOUTCOMMITTING, "LAYOUTCOMMIT" })
{ BIT(NFS_INO_ADVISE_RDPLUS), "ADVISE_RDPLUS" }, \
{ BIT(NFS_INO_STALE), "STALE" }, \
{ BIT(NFS_INO_ACL_LRU_SET), "ACL_LRU_SET" }, \
{ BIT(NFS_INO_INVALIDATING), "INVALIDATING" }, \
{ BIT(NFS_INO_FSCACHE), "FSCACHE" }, \
{ BIT(NFS_INO_FSCACHE_LOCK), "FSCACHE_LOCK" }, \
{ BIT(NFS_INO_LAYOUTCOMMIT), "NEED_LAYOUTCOMMIT" }, \
{ BIT(NFS_INO_LAYOUTCOMMITTING), "LAYOUTCOMMIT" }, \
{ BIT(NFS_INO_LAYOUTSTATS), "LAYOUTSTATS" }, \
{ BIT(NFS_INO_ODIRECT), "ODIRECT" })
DECLARE_EVENT_CLASS(nfs_inode_event,
TP_PROTO(
@ -83,7 +125,7 @@ DECLARE_EVENT_CLASS(nfs_inode_event_done,
TP_ARGS(inode, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned long, error)
__field(dev_t, dev)
__field(u32, fhandle)
__field(unsigned char, type)
@ -96,7 +138,7 @@ DECLARE_EVENT_CLASS(nfs_inode_event_done,
TP_fast_assign(
const struct nfs_inode *nfsi = NFS_I(inode);
__entry->error = error;
__entry->error = error < 0 ? -error : 0;
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = nfsi->fileid;
__entry->fhandle = nfs_fhandle_hash(&nfsi->fh);
@ -108,10 +150,10 @@ DECLARE_EVENT_CLASS(nfs_inode_event_done,
),
TP_printk(
"error=%d fileid=%02x:%02x:%llu fhandle=0x%08x "
"error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x "
"type=%u (%s) version=%llu size=%lld "
"cache_validity=%lu (%s) nfs_flags=%ld (%s)",
__entry->error,
"cache_validity=0x%lx (%s) nfs_flags=0x%lx (%s)",
-__entry->error, nfs_show_status(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->fileid,
__entry->fhandle,
@ -158,13 +200,41 @@ DEFINE_NFS_INODE_EVENT_DONE(nfs_fsync_exit);
DEFINE_NFS_INODE_EVENT(nfs_access_enter);
DEFINE_NFS_INODE_EVENT_DONE(nfs_access_exit);
TRACE_DEFINE_ENUM(LOOKUP_FOLLOW);
TRACE_DEFINE_ENUM(LOOKUP_DIRECTORY);
TRACE_DEFINE_ENUM(LOOKUP_AUTOMOUNT);
TRACE_DEFINE_ENUM(LOOKUP_PARENT);
TRACE_DEFINE_ENUM(LOOKUP_REVAL);
TRACE_DEFINE_ENUM(LOOKUP_RCU);
TRACE_DEFINE_ENUM(LOOKUP_NO_REVAL);
TRACE_DEFINE_ENUM(LOOKUP_NO_EVAL);
TRACE_DEFINE_ENUM(LOOKUP_OPEN);
TRACE_DEFINE_ENUM(LOOKUP_CREATE);
TRACE_DEFINE_ENUM(LOOKUP_EXCL);
TRACE_DEFINE_ENUM(LOOKUP_RENAME_TARGET);
TRACE_DEFINE_ENUM(LOOKUP_JUMPED);
TRACE_DEFINE_ENUM(LOOKUP_ROOT);
TRACE_DEFINE_ENUM(LOOKUP_EMPTY);
TRACE_DEFINE_ENUM(LOOKUP_DOWN);
#define show_lookup_flags(flags) \
__print_flags((unsigned long)flags, "|", \
{ LOOKUP_AUTOMOUNT, "AUTOMOUNT" }, \
__print_flags(flags, "|", \
{ LOOKUP_FOLLOW, "FOLLOW" }, \
{ LOOKUP_DIRECTORY, "DIRECTORY" }, \
{ LOOKUP_AUTOMOUNT, "AUTOMOUNT" }, \
{ LOOKUP_PARENT, "PARENT" }, \
{ LOOKUP_REVAL, "REVAL" }, \
{ LOOKUP_RCU, "RCU" }, \
{ LOOKUP_NO_REVAL, "NO_REVAL" }, \
{ LOOKUP_NO_EVAL, "NO_EVAL" }, \
{ LOOKUP_OPEN, "OPEN" }, \
{ LOOKUP_CREATE, "CREATE" }, \
{ LOOKUP_EXCL, "EXCL" })
{ LOOKUP_EXCL, "EXCL" }, \
{ LOOKUP_RENAME_TARGET, "RENAME_TARGET" }, \
{ LOOKUP_JUMPED, "JUMPED" }, \
{ LOOKUP_ROOT, "ROOT" }, \
{ LOOKUP_EMPTY, "EMPTY" }, \
{ LOOKUP_DOWN, "DOWN" })
DECLARE_EVENT_CLASS(nfs_lookup_event,
TP_PROTO(
@ -176,7 +246,7 @@ DECLARE_EVENT_CLASS(nfs_lookup_event,
TP_ARGS(dir, dentry, flags),
TP_STRUCT__entry(
__field(unsigned int, flags)
__field(unsigned long, flags)
__field(dev_t, dev)
__field(u64, dir)
__string(name, dentry->d_name.name)
@ -190,7 +260,7 @@ DECLARE_EVENT_CLASS(nfs_lookup_event,
),
TP_printk(
"flags=%u (%s) name=%02x:%02x:%llu/%s",
"flags=0x%lx (%s) name=%02x:%02x:%llu/%s",
__entry->flags,
show_lookup_flags(__entry->flags),
MAJOR(__entry->dev), MINOR(__entry->dev),
@ -219,8 +289,8 @@ DECLARE_EVENT_CLASS(nfs_lookup_event_done,
TP_ARGS(dir, dentry, flags, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned int, flags)
__field(unsigned long, error)
__field(unsigned long, flags)
__field(dev_t, dev)
__field(u64, dir)
__string(name, dentry->d_name.name)
@ -229,14 +299,14 @@ DECLARE_EVENT_CLASS(nfs_lookup_event_done,
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->error = error;
__entry->error = error < 0 ? -error : 0;
__entry->flags = flags;
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"error=%d flags=%u (%s) name=%02x:%02x:%llu/%s",
__entry->error,
"error=%ld (%s) flags=0x%lx (%s) name=%02x:%02x:%llu/%s",
-__entry->error, nfs_show_status(__entry->error),
__entry->flags,
show_lookup_flags(__entry->flags),
MAJOR(__entry->dev), MINOR(__entry->dev),
@ -260,15 +330,43 @@ DEFINE_NFS_LOOKUP_EVENT_DONE(nfs_lookup_exit);
DEFINE_NFS_LOOKUP_EVENT(nfs_lookup_revalidate_enter);
DEFINE_NFS_LOOKUP_EVENT_DONE(nfs_lookup_revalidate_exit);
TRACE_DEFINE_ENUM(O_WRONLY);
TRACE_DEFINE_ENUM(O_RDWR);
TRACE_DEFINE_ENUM(O_CREAT);
TRACE_DEFINE_ENUM(O_EXCL);
TRACE_DEFINE_ENUM(O_NOCTTY);
TRACE_DEFINE_ENUM(O_TRUNC);
TRACE_DEFINE_ENUM(O_APPEND);
TRACE_DEFINE_ENUM(O_NONBLOCK);
TRACE_DEFINE_ENUM(O_DSYNC);
TRACE_DEFINE_ENUM(O_DIRECT);
TRACE_DEFINE_ENUM(O_LARGEFILE);
TRACE_DEFINE_ENUM(O_DIRECTORY);
TRACE_DEFINE_ENUM(O_NOFOLLOW);
TRACE_DEFINE_ENUM(O_NOATIME);
TRACE_DEFINE_ENUM(O_CLOEXEC);
#define show_open_flags(flags) \
__print_flags((unsigned long)flags, "|", \
__print_flags(flags, "|", \
{ O_WRONLY, "O_WRONLY" }, \
{ O_RDWR, "O_RDWR" }, \
{ O_CREAT, "O_CREAT" }, \
{ O_EXCL, "O_EXCL" }, \
{ O_NOCTTY, "O_NOCTTY" }, \
{ O_TRUNC, "O_TRUNC" }, \
{ O_APPEND, "O_APPEND" }, \
{ O_NONBLOCK, "O_NONBLOCK" }, \
{ O_DSYNC, "O_DSYNC" }, \
{ O_DIRECT, "O_DIRECT" }, \
{ O_DIRECTORY, "O_DIRECTORY" })
{ O_LARGEFILE, "O_LARGEFILE" }, \
{ O_DIRECTORY, "O_DIRECTORY" }, \
{ O_NOFOLLOW, "O_NOFOLLOW" }, \
{ O_NOATIME, "O_NOATIME" }, \
{ O_CLOEXEC, "O_CLOEXEC" })
TRACE_DEFINE_ENUM(FMODE_READ);
TRACE_DEFINE_ENUM(FMODE_WRITE);
TRACE_DEFINE_ENUM(FMODE_EXEC);
#define show_fmode_flags(mode) \
__print_flags(mode, "|", \
@ -286,7 +384,7 @@ TRACE_EVENT(nfs_atomic_open_enter,
TP_ARGS(dir, ctx, flags),
TP_STRUCT__entry(
__field(unsigned int, flags)
__field(unsigned long, flags)
__field(unsigned int, fmode)
__field(dev_t, dev)
__field(u64, dir)
@ -302,7 +400,7 @@ TRACE_EVENT(nfs_atomic_open_enter,
),
TP_printk(
"flags=%u (%s) fmode=%s name=%02x:%02x:%llu/%s",
"flags=0x%lx (%s) fmode=%s name=%02x:%02x:%llu/%s",
__entry->flags,
show_open_flags(__entry->flags),
show_fmode_flags(__entry->fmode),
@ -323,8 +421,8 @@ TRACE_EVENT(nfs_atomic_open_exit,
TP_ARGS(dir, ctx, flags, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned int, flags)
__field(unsigned long, error)
__field(unsigned long, flags)
__field(unsigned int, fmode)
__field(dev_t, dev)
__field(u64, dir)
@ -332,7 +430,7 @@ TRACE_EVENT(nfs_atomic_open_exit,
),
TP_fast_assign(
__entry->error = error;
__entry->error = -error;
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->flags = flags;
@ -341,9 +439,9 @@ TRACE_EVENT(nfs_atomic_open_exit,
),
TP_printk(
"error=%d flags=%u (%s) fmode=%s "
"error=%ld (%s) flags=0x%lx (%s) fmode=%s "
"name=%02x:%02x:%llu/%s",
__entry->error,
-__entry->error, nfs_show_status(__entry->error),
__entry->flags,
show_open_flags(__entry->flags),
show_fmode_flags(__entry->fmode),
@ -363,7 +461,7 @@ TRACE_EVENT(nfs_create_enter,
TP_ARGS(dir, dentry, flags),
TP_STRUCT__entry(
__field(unsigned int, flags)
__field(unsigned long, flags)
__field(dev_t, dev)
__field(u64, dir)
__string(name, dentry->d_name.name)
@ -377,7 +475,7 @@ TRACE_EVENT(nfs_create_enter,
),
TP_printk(
"flags=%u (%s) name=%02x:%02x:%llu/%s",
"flags=0x%lx (%s) name=%02x:%02x:%llu/%s",
__entry->flags,
show_open_flags(__entry->flags),
MAJOR(__entry->dev), MINOR(__entry->dev),
@ -397,15 +495,15 @@ TRACE_EVENT(nfs_create_exit,
TP_ARGS(dir, dentry, flags, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned int, flags)
__field(unsigned long, error)
__field(unsigned long, flags)
__field(dev_t, dev)
__field(u64, dir)
__string(name, dentry->d_name.name)
),
TP_fast_assign(
__entry->error = error;
__entry->error = -error;
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->flags = flags;
@ -413,8 +511,8 @@ TRACE_EVENT(nfs_create_exit,
),
TP_printk(
"error=%d flags=%u (%s) name=%02x:%02x:%llu/%s",
__entry->error,
"error=%ld (%s) flags=0x%lx (%s) name=%02x:%02x:%llu/%s",
-__entry->error, nfs_show_status(__entry->error),
__entry->flags,
show_open_flags(__entry->flags),
MAJOR(__entry->dev), MINOR(__entry->dev),
@ -469,7 +567,7 @@ DECLARE_EVENT_CLASS(nfs_directory_event_done,
TP_ARGS(dir, dentry, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned long, error)
__field(dev_t, dev)
__field(u64, dir)
__string(name, dentry->d_name.name)
@ -478,13 +576,13 @@ DECLARE_EVENT_CLASS(nfs_directory_event_done,
TP_fast_assign(
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->error = error;
__entry->error = error < 0 ? -error : 0;
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"error=%d name=%02x:%02x:%llu/%s",
__entry->error,
"error=%ld (%s) name=%02x:%02x:%llu/%s",
-__entry->error, nfs_show_status(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
@ -557,7 +655,7 @@ TRACE_EVENT(nfs_link_exit,
TP_ARGS(inode, dir, dentry, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned long, error)
__field(dev_t, dev)
__field(u64, fileid)
__field(u64, dir)
@ -568,13 +666,13 @@ TRACE_EVENT(nfs_link_exit,
__entry->dev = inode->i_sb->s_dev;
__entry->fileid = NFS_FILEID(inode);
__entry->dir = NFS_FILEID(dir);
__entry->error = error;
__entry->error = error < 0 ? -error : 0;
__assign_str(name, dentry->d_name.name);
),
TP_printk(
"error=%d fileid=%02x:%02x:%llu name=%02x:%02x:%llu/%s",
__entry->error,
"error=%ld (%s) fileid=%02x:%02x:%llu name=%02x:%02x:%llu/%s",
-__entry->error, nfs_show_status(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->fileid,
MAJOR(__entry->dev), MINOR(__entry->dev),
@ -642,7 +740,7 @@ DECLARE_EVENT_CLASS(nfs_rename_event_done,
TP_STRUCT__entry(
__field(dev_t, dev)
__field(int, error)
__field(unsigned long, error)
__field(u64, old_dir)
__string(old_name, old_dentry->d_name.name)
__field(u64, new_dir)
@ -651,17 +749,17 @@ DECLARE_EVENT_CLASS(nfs_rename_event_done,
TP_fast_assign(
__entry->dev = old_dir->i_sb->s_dev;
__entry->error = -error;
__entry->old_dir = NFS_FILEID(old_dir);
__entry->new_dir = NFS_FILEID(new_dir);
__entry->error = error;
__assign_str(old_name, old_dentry->d_name.name);
__assign_str(new_name, new_dentry->d_name.name);
),
TP_printk(
"error=%d old_name=%02x:%02x:%llu/%s "
"error=%ld (%s) old_name=%02x:%02x:%llu/%s "
"new_name=%02x:%02x:%llu/%s",
__entry->error,
-__entry->error, nfs_show_status(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->old_dir,
__get_str(old_name),
@ -697,7 +795,7 @@ TRACE_EVENT(nfs_sillyrename_unlink,
TP_STRUCT__entry(
__field(dev_t, dev)
__field(int, error)
__field(unsigned long, error)
__field(u64, dir)
__dynamic_array(char, name, data->args.name.len + 1)
),
@ -707,15 +805,15 @@ TRACE_EVENT(nfs_sillyrename_unlink,
size_t len = data->args.name.len;
__entry->dev = dir->i_sb->s_dev;
__entry->dir = NFS_FILEID(dir);
__entry->error = error;
__entry->error = -error;
memcpy(__get_str(name),
data->args.name.name, len);
__get_str(name)[len] = 0;
),
TP_printk(
"error=%d name=%02x:%02x:%llu/%s",
__entry->error,
"error=%ld (%s) name=%02x:%02x:%llu/%s",
-__entry->error, nfs_show_status(__entry->error),
MAJOR(__entry->dev), MINOR(__entry->dev),
(unsigned long long)__entry->dir,
__get_str(name)
@ -974,6 +1072,8 @@ TRACE_DEFINE_ENUM(NFSERR_PERM);
TRACE_DEFINE_ENUM(NFSERR_NOENT);
TRACE_DEFINE_ENUM(NFSERR_IO);
TRACE_DEFINE_ENUM(NFSERR_NXIO);
TRACE_DEFINE_ENUM(ECHILD);
TRACE_DEFINE_ENUM(NFSERR_EAGAIN);
TRACE_DEFINE_ENUM(NFSERR_ACCES);
TRACE_DEFINE_ENUM(NFSERR_EXIST);
TRACE_DEFINE_ENUM(NFSERR_XDEV);
@ -985,6 +1085,7 @@ TRACE_DEFINE_ENUM(NFSERR_FBIG);
TRACE_DEFINE_ENUM(NFSERR_NOSPC);
TRACE_DEFINE_ENUM(NFSERR_ROFS);
TRACE_DEFINE_ENUM(NFSERR_MLINK);
TRACE_DEFINE_ENUM(NFSERR_OPNOTSUPP);
TRACE_DEFINE_ENUM(NFSERR_NAMETOOLONG);
TRACE_DEFINE_ENUM(NFSERR_NOTEMPTY);
TRACE_DEFINE_ENUM(NFSERR_DQUOT);
@ -1007,6 +1108,8 @@ TRACE_DEFINE_ENUM(NFSERR_JUKEBOX);
{ NFSERR_NOENT, "NOENT" }, \
{ NFSERR_IO, "IO" }, \
{ NFSERR_NXIO, "NXIO" }, \
{ ECHILD, "CHILD" }, \
{ NFSERR_EAGAIN, "AGAIN" }, \
{ NFSERR_ACCES, "ACCES" }, \
{ NFSERR_EXIST, "EXIST" }, \
{ NFSERR_XDEV, "XDEV" }, \
@ -1018,6 +1121,7 @@ TRACE_DEFINE_ENUM(NFSERR_JUKEBOX);
{ NFSERR_NOSPC, "NOSPC" }, \
{ NFSERR_ROFS, "ROFS" }, \
{ NFSERR_MLINK, "MLINK" }, \
{ NFSERR_OPNOTSUPP, "OPNOTSUPP" }, \
{ NFSERR_NAMETOOLONG, "NAMETOOLONG" }, \
{ NFSERR_NOTEMPTY, "NOTEMPTY" }, \
{ NFSERR_DQUOT, "DQUOT" }, \
@ -1035,22 +1139,33 @@ TRACE_DEFINE_ENUM(NFSERR_JUKEBOX);
TRACE_EVENT(nfs_xdr_status,
TP_PROTO(
const struct xdr_stream *xdr,
int error
),
TP_ARGS(error),
TP_ARGS(xdr, error),
TP_STRUCT__entry(
__field(int, error)
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(u32, xid)
__field(unsigned long, error)
),
TP_fast_assign(
const struct rpc_rqst *rqstp = xdr->rqst;
const struct rpc_task *task = rqstp->rq_task;
__entry->task_id = task->tk_pid;
__entry->client_id = task->tk_client->cl_clid;
__entry->xid = be32_to_cpu(rqstp->rq_xid);
__entry->error = error;
),
TP_printk(
"error=%d (%s)",
__entry->error, nfs_show_status(__entry->error)
"task:%u@%d xid=0x%08x error=%ld (%s)",
__entry->task_id, __entry->client_id, __entry->xid,
-__entry->error, nfs_show_status(__entry->error)
)
);

6
fs/nfs/pagelist.c
View File

@ -77,7 +77,7 @@ void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos)
static inline struct nfs_page *
nfs_page_alloc(void)
{
struct nfs_page *p = kmem_cache_zalloc(nfs_page_cachep, GFP_NOIO);
struct nfs_page *p = kmem_cache_zalloc(nfs_page_cachep, GFP_KERNEL);
if (p)
INIT_LIST_HEAD(&p->wb_list);
return p;
@ -775,8 +775,6 @@ int nfs_generic_pgio(struct nfs_pageio_descriptor *desc,
if (pagecount <= ARRAY_SIZE(pg_array->page_array))
pg_array->pagevec = pg_array->page_array;
else {
if (hdr->rw_mode == FMODE_WRITE)
gfp_flags = GFP_NOIO;
pg_array->pagevec = kcalloc(pagecount, sizeof(struct page *), gfp_flags);
if (!pg_array->pagevec) {
pg_array->npages = 0;
@ -851,7 +849,7 @@ nfs_pageio_alloc_mirrors(struct nfs_pageio_descriptor *desc,
desc->pg_mirrors_dynamic = NULL;
if (mirror_count == 1)
return desc->pg_mirrors_static;
ret = kmalloc_array(mirror_count, sizeof(*ret), GFP_NOFS);
ret = kmalloc_array(mirror_count, sizeof(*ret), GFP_KERNEL);
if (ret != NULL) {
for (i = 0; i < mirror_count; i++)
nfs_pageio_mirror_init(&ret[i], desc->pg_bsize);

20
fs/nfs/pnfs.c
View File

@ -1890,7 +1890,7 @@ pnfs_update_layout(struct inode *ino,
spin_unlock(&ino->i_lock);
lseg = ERR_PTR(wait_var_event_killable(&lo->plh_outstanding,
!atomic_read(&lo->plh_outstanding)));
if (IS_ERR(lseg) || !list_empty(&lo->plh_segs))
if (IS_ERR(lseg))
goto out_put_layout_hdr;
pnfs_put_layout_hdr(lo);
goto lookup_again;
@ -1915,6 +1915,7 @@ pnfs_update_layout(struct inode *ino,
* stateid.
*/
if (test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags)) {
int status;
/*
* The first layoutget for the file. Need to serialize per
@ -1934,13 +1935,20 @@ pnfs_update_layout(struct inode *ino,
}
first = true;
if (nfs4_select_rw_stateid(ctx->state,
status = nfs4_select_rw_stateid(ctx->state,
iomode == IOMODE_RW ? FMODE_WRITE : FMODE_READ,
NULL, &stateid, NULL) != 0) {
NULL, &stateid, NULL);
if (status != 0) {
trace_pnfs_update_layout(ino, pos, count,
iomode, lo, lseg,
PNFS_UPDATE_LAYOUT_INVALID_OPEN);
goto out_unlock;
if (status != -EAGAIN)
goto out_unlock;
spin_unlock(&ino->i_lock);
nfs4_schedule_stateid_recovery(server, ctx->state);
pnfs_clear_first_layoutget(lo);
pnfs_put_layout_hdr(lo);
goto lookup_again;
}
} else {
nfs4_stateid_copy(&stateid, &lo->plh_stateid);
@ -2029,6 +2037,8 @@ pnfs_update_layout(struct inode *ino,
out_put_layout_hdr:
if (first)
pnfs_clear_first_layoutget(lo);
trace_pnfs_update_layout(ino, pos, count, iomode, lo, lseg,
PNFS_UPDATE_LAYOUT_EXIT);
pnfs_put_layout_hdr(lo);
out:
dprintk("%s: inode %s/%llu pNFS layout segment %s for "
@ -2468,7 +2478,7 @@ pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio,
wb_size,
IOMODE_RW,
false,
GFP_NOFS);
GFP_KERNEL);
if (IS_ERR(pgio->pg_lseg)) {
pgio->pg_error = PTR_ERR(pgio->pg_lseg);
pgio->pg_lseg = NULL;

57
fs/nfs/super.c
View File

@ -77,6 +77,8 @@
#define NFS_DEFAULT_VERSION 2
#endif
#define NFS_MAX_CONNECTIONS 16
enum {
/* Mount options that take no arguments */
Opt_soft, Opt_softerr, Opt_hard,
@ -108,6 +110,7 @@ enum {
Opt_nfsvers,
Opt_sec, Opt_proto, Opt_mountproto, Opt_mounthost,
Opt_addr, Opt_mountaddr, Opt_clientaddr,
Opt_nconnect,
Opt_lookupcache,
Opt_fscache_uniq,
Opt_local_lock,
@ -181,6 +184,8 @@ static const match_table_t nfs_mount_option_tokens = {
{ Opt_mounthost, "mounthost=%s" },
{ Opt_mountaddr, "mountaddr=%s" },
{ Opt_nconnect, "nconnect=%s" },
{ Opt_lookupcache, "lookupcache=%s" },
{ Opt_fscache_uniq, "fsc=%s" },
{ Opt_local_lock, "local_lock=%s" },
@ -582,7 +587,7 @@ static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss,
}
default:
if (showdefaults)
seq_printf(m, ",mountaddr=unspecified");
seq_puts(m, ",mountaddr=unspecified");
}
if (nfss->mountd_version || showdefaults)
@ -673,6 +678,8 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
seq_printf(m, ",proto=%s",
rpc_peeraddr2str(nfss->client, RPC_DISPLAY_NETID));
rcu_read_unlock();
if (clp->cl_nconnect > 0)
seq_printf(m, ",nconnect=%u", clp->cl_nconnect);
if (version == 4) {
if (nfss->port != NFS_PORT)
seq_printf(m, ",port=%u", nfss->port);
@ -690,29 +697,29 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
nfs_show_nfsv4_options(m, nfss, showdefaults);
if (nfss->options & NFS_OPTION_FSCACHE)
seq_printf(m, ",fsc");
seq_puts(m, ",fsc");
if (nfss->options & NFS_OPTION_MIGRATION)
seq_printf(m, ",migration");
seq_puts(m, ",migration");
if (nfss->flags & NFS_MOUNT_LOOKUP_CACHE_NONEG) {
if (nfss->flags & NFS_MOUNT_LOOKUP_CACHE_NONE)
seq_printf(m, ",lookupcache=none");
seq_puts(m, ",lookupcache=none");
else
seq_printf(m, ",lookupcache=pos");
seq_puts(m, ",lookupcache=pos");
}
local_flock = nfss->flags & NFS_MOUNT_LOCAL_FLOCK;
local_fcntl = nfss->flags & NFS_MOUNT_LOCAL_FCNTL;
if (!local_flock && !local_fcntl)
seq_printf(m, ",local_lock=none");
seq_puts(m, ",local_lock=none");
else if (local_flock && local_fcntl)
seq_printf(m, ",local_lock=all");
seq_puts(m, ",local_lock=all");
else if (local_flock)
seq_printf(m, ",local_lock=flock");
seq_puts(m, ",local_lock=flock");
else
seq_printf(m, ",local_lock=posix");
seq_puts(m, ",local_lock=posix");
}
/*
@ -735,11 +742,21 @@ int nfs_show_options(struct seq_file *m, struct dentry *root)
EXPORT_SYMBOL_GPL(nfs_show_options);
#if IS_ENABLED(CONFIG_NFS_V4)
static void show_lease(struct seq_file *m, struct nfs_server *server)
{
struct nfs_client *clp = server->nfs_client;
unsigned long expire;
seq_printf(m, ",lease_time=%ld", clp->cl_lease_time / HZ);
expire = clp->cl_last_renewal + clp->cl_lease_time;
seq_printf(m, ",lease_expired=%ld",
time_after(expire, jiffies) ? 0 : (jiffies - expire) / HZ);
}
#ifdef CONFIG_NFS_V4_1
static void show_sessions(struct seq_file *m, struct nfs_server *server)
{
if (nfs4_has_session(server->nfs_client))
seq_printf(m, ",sessions");
seq_puts(m, ",sessions");
}
#else
static void show_sessions(struct seq_file *m, struct nfs_server *server) {}
@ -816,7 +833,7 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root)
/*
* Display all mount option settings
*/
seq_printf(m, "\n\topts:\t");
seq_puts(m, "\n\topts:\t");
seq_puts(m, sb_rdonly(root->d_sb) ? "ro" : "rw");
seq_puts(m, root->d_sb->s_flags & SB_SYNCHRONOUS ? ",sync" : "");
seq_puts(m, root->d_sb->s_flags & SB_NOATIME ? ",noatime" : "");
@ -827,7 +844,7 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root)
show_implementation_id(m, nfss);
seq_printf(m, "\n\tcaps:\t");
seq_puts(m, "\n\tcaps:\t");
seq_printf(m, "caps=0x%x", nfss->caps);
seq_printf(m, ",wtmult=%u", nfss->wtmult);
seq_printf(m, ",dtsize=%u", nfss->dtsize);
@ -836,13 +853,14 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root)
#if IS_ENABLED(CONFIG_NFS_V4)
if (nfss->nfs_client->rpc_ops->version == 4) {
seq_printf(m, "\n\tnfsv4:\t");
seq_puts(m, "\n\tnfsv4:\t");
seq_printf(m, "bm0=0x%x", nfss->attr_bitmask[0]);
seq_printf(m, ",bm1=0x%x", nfss->attr_bitmask[1]);
seq_printf(m, ",bm2=0x%x", nfss->attr_bitmask[2]);
seq_printf(m, ",acl=0x%x", nfss->acl_bitmask);
show_sessions(m, nfss);
show_pnfs(m, nfss);
show_lease(m, nfss);
}
#endif
@ -874,20 +892,20 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root)
preempt_enable();
}
seq_printf(m, "\n\tevents:\t");
seq_puts(m, "\n\tevents:\t");
for (i = 0; i < __NFSIOS_COUNTSMAX; i++)
seq_printf(m, "%lu ", totals.events[i]);
seq_printf(m, "\n\tbytes:\t");
seq_puts(m, "\n\tbytes:\t");
for (i = 0; i < __NFSIOS_BYTESMAX; i++)
seq_printf(m, "%Lu ", totals.bytes[i]);
#ifdef CONFIG_NFS_FSCACHE
if (nfss->options & NFS_OPTION_FSCACHE) {
seq_printf(m, "\n\tfsc:\t");
seq_puts(m, "\n\tfsc:\t");
for (i = 0; i < __NFSIOS_FSCACHEMAX; i++)
seq_printf(m, "%Lu ", totals.fscache[i]);
}
#endif
seq_printf(m, "\n");
seq_putc(m, '\n');
rpc_clnt_show_stats(m, nfss->client);
@ -1549,6 +1567,11 @@ static int nfs_parse_mount_options(char *raw,
if (mnt->mount_server.addrlen == 0)
goto out_invalid_address;
break;
case Opt_nconnect:
if (nfs_get_option_ul_bound(args, &option, 1, NFS_MAX_CONNECTIONS))
goto out_invalid_value;
mnt->nfs_server.nconnect = option;
break;
case Opt_lookupcache:
string = match_strdup(args);
if (string == NULL)

187
fs/nfs/sysfs.c Normal file
View File

@ -0,0 +1,187 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2019 Hammerspace Inc
*/
#include <linux/module.h>
#include <linux/kobject.h>
#include <linux/sysfs.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/netdevice.h>
#include <linux/string.h>
#include <linux/nfs_fs.h>
#include <linux/rcupdate.h>
#include "nfs4_fs.h"
#include "netns.h"
#include "sysfs.h"
struct kobject *nfs_client_kobj;
static struct kset *nfs_client_kset;
static void nfs_netns_object_release(struct kobject *kobj)
{
kfree(kobj);
}
static const struct kobj_ns_type_operations *nfs_netns_object_child_ns_type(
struct kobject *kobj)
{
return &net_ns_type_operations;
}
static struct kobj_type nfs_netns_object_type = {
.release = nfs_netns_object_release,
.sysfs_ops = &kobj_sysfs_ops,
.child_ns_type = nfs_netns_object_child_ns_type,
};
static struct kobject *nfs_netns_object_alloc(const char *name,
struct kset *kset, struct kobject *parent)
{
struct kobject *kobj;
kobj = kzalloc(sizeof(*kobj), GFP_KERNEL);
if (kobj) {
kobj->kset = kset;
if (kobject_init_and_add(kobj, &nfs_netns_object_type,
parent, "%s", name) == 0)
return kobj;
kobject_put(kobj);
}
return NULL;
}
int nfs_sysfs_init(void)
{
nfs_client_kset = kset_create_and_add("nfs", NULL, fs_kobj);
if (!nfs_client_kset)
return -ENOMEM;
nfs_client_kobj = nfs_netns_object_alloc("net", nfs_client_kset, NULL);
if (!nfs_client_kobj) {
kset_unregister(nfs_client_kset);
nfs_client_kset = NULL;
return -ENOMEM;
}
return 0;
}
void nfs_sysfs_exit(void)
{
kobject_put(nfs_client_kobj);
kset_unregister(nfs_client_kset);
}
static ssize_t nfs_netns_identifier_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
struct nfs_netns_client *c = container_of(kobj,
struct nfs_netns_client,
kobject);
return scnprintf(buf, PAGE_SIZE, "%s\n", c->identifier);
}
/* Strip trailing '\n' */
static size_t nfs_string_strip(const char *c, size_t len)
{
while (len > 0 && c[len-1] == '\n')
--len;
return len;
}
static ssize_t nfs_netns_identifier_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct nfs_netns_client *c = container_of(kobj,
struct nfs_netns_client,
kobject);
const char *old;
char *p;
size_t len;
len = nfs_string_strip(buf, min_t(size_t, count, CONTAINER_ID_MAXLEN));
if (!len)
return 0;
p = kmemdup_nul(buf, len, GFP_KERNEL);
if (!p)
return -ENOMEM;
old = xchg(&c->identifier, p);
if (old) {
synchronize_rcu();
kfree(old);
}
return count;
}
static void nfs_netns_client_release(struct kobject *kobj)
{
struct nfs_netns_client *c = container_of(kobj,
struct nfs_netns_client,
kobject);
if (c->identifier)
kfree(c->identifier);
kfree(c);
}
static const void *nfs_netns_client_namespace(struct kobject *kobj)
{
return container_of(kobj, struct nfs_netns_client, kobject)->net;
}
static struct kobj_attribute nfs_netns_client_id = __ATTR(identifier,
0644, nfs_netns_identifier_show, nfs_netns_identifier_store);
static struct attribute *nfs_netns_client_attrs[] = {
&nfs_netns_client_id.attr,
NULL,
};
static struct kobj_type nfs_netns_client_type = {
.release = nfs_netns_client_release,
.default_attrs = nfs_netns_client_attrs,
.sysfs_ops = &kobj_sysfs_ops,
.namespace = nfs_netns_client_namespace,
};
static struct nfs_netns_client *nfs_netns_client_alloc(struct kobject *parent,
struct net *net)
{
struct nfs_netns_client *p;
p = kzalloc(sizeof(*p), GFP_KERNEL);
if (p) {
p->net = net;
p->kobject.kset = nfs_client_kset;
if (kobject_init_and_add(&p->kobject, &nfs_netns_client_type,
parent, "nfs_client") == 0)
return p;
kobject_put(&p->kobject);
}
return NULL;
}
void nfs_netns_sysfs_setup(struct nfs_net *netns, struct net *net)
{
struct nfs_netns_client *clp;
clp = nfs_netns_client_alloc(nfs_client_kobj, net);
if (clp) {
netns->nfs_client = clp;
kobject_uevent(&clp->kobject, KOBJ_ADD);
}
}
void nfs_netns_sysfs_destroy(struct nfs_net *netns)
{
struct nfs_netns_client *clp = netns->nfs_client;
if (clp) {
kobject_uevent(&clp->kobject, KOBJ_REMOVE);
kobject_del(&clp->kobject);
kobject_put(&clp->kobject);
netns->nfs_client = NULL;
}
}

25
fs/nfs/sysfs.h Normal file
View File

@ -0,0 +1,25 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2019 Hammerspace Inc
*/
#ifndef __NFS_SYSFS_H
#define __NFS_SYSFS_H
#define CONTAINER_ID_MAXLEN (64)
struct nfs_netns_client {
struct kobject kobject;
struct net *net;
const char *identifier;
};
extern struct kobject *nfs_client_kobj;
extern int nfs_sysfs_init(void);
extern void nfs_sysfs_exit(void);
void nfs_netns_sysfs_setup(struct nfs_net *netns, struct net *net);
void nfs_netns_sysfs_destroy(struct nfs_net *netns);
#endif

7
fs/nfs/write.c
View File

@ -103,7 +103,7 @@ EXPORT_SYMBOL_GPL(nfs_commit_free);
static struct nfs_pgio_header *nfs_writehdr_alloc(void)
{
struct nfs_pgio_header *p = mempool_alloc(nfs_wdata_mempool, GFP_NOIO);
struct nfs_pgio_header *p = mempool_alloc(nfs_wdata_mempool, GFP_KERNEL);
memset(p, 0, sizeof(*p));
p->rw_mode = FMODE_WRITE;
@ -721,12 +721,11 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
struct inode *inode = mapping->host;
struct nfs_pageio_descriptor pgio;
struct nfs_io_completion *ioc;
unsigned int pflags = memalloc_nofs_save();
int err;
nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES);
ioc = nfs_io_completion_alloc(GFP_NOFS);
ioc = nfs_io_completion_alloc(GFP_KERNEL);
if (ioc)
nfs_io_completion_init(ioc, nfs_io_completion_commit, inode);
@ -737,8 +736,6 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
nfs_pageio_complete(&pgio);
nfs_io_completion_put(ioc);
memalloc_nofs_restore(pflags);
if (err < 0)
goto out_err;
err = pgio.pg_error;

1
include/linux/nfs4.h
View File

@ -660,6 +660,7 @@ enum pnfs_update_layout_reason {
PNFS_UPDATE_LAYOUT_BLOCKED,
PNFS_UPDATE_LAYOUT_INVALID_OPEN,
PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET,
PNFS_UPDATE_LAYOUT_EXIT,
};
#define NFS4_OP_MAP_NUM_LONGS \

2
include/linux/nfs_fs.h
View File

@ -223,6 +223,8 @@ struct nfs4_copy_state {
#define NFS_INO_INVALID_MTIME BIT(10) /* cached mtime is invalid */
#define NFS_INO_INVALID_SIZE BIT(11) /* cached size is invalid */
#define NFS_INO_INVALID_OTHER BIT(12) /* other attrs are invalid */
#define NFS_INO_DATA_INVAL_DEFER \
BIT(13) /* Deferred cache invalidation */
#define NFS_INO_INVALID_ATTR (NFS_INO_INVALID_CHANGE \
| NFS_INO_INVALID_CTIME \

1
include/linux/nfs_fs_sb.h
View File

@ -58,6 +58,7 @@ struct nfs_client {
struct nfs_subversion * cl_nfs_mod; /* pointer to nfs version module */
u32 cl_minorversion;/* NFSv4 minorversion */
unsigned int cl_nconnect; /* Number of connections */
const char * cl_principal; /* used for machine cred */
#if IS_ENABLED(CONFIG_NFS_V4)

1
include/linux/sunrpc/bc_xprt.h
View File

@ -43,6 +43,7 @@ void xprt_destroy_backchannel(struct rpc_xprt *, unsigned int max_reqs);
int xprt_setup_bc(struct rpc_xprt *xprt, unsigned int min_reqs);
void xprt_destroy_bc(struct rpc_xprt *xprt, unsigned int max_reqs);
void xprt_free_bc_rqst(struct rpc_rqst *req);
unsigned int xprt_bc_max_slots(struct rpc_xprt *xprt);
/*
* Determine if a shared backchannel is in use

4
include/linux/sunrpc/clnt.h
View File

@ -124,6 +124,7 @@ struct rpc_create_args {
u32 prognumber; /* overrides program->number */
u32 version;
rpc_authflavor_t authflavor;
u32 nconnect;
unsigned long flags;
char *client_name;
struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */
@ -163,6 +164,8 @@ void rpc_shutdown_client(struct rpc_clnt *);
void rpc_release_client(struct rpc_clnt *);
void rpc_task_release_transport(struct rpc_task *);
void rpc_task_release_client(struct rpc_task *);
struct rpc_xprt *rpc_task_get_xprt(struct rpc_clnt *clnt,
struct rpc_xprt *xprt);
int rpcb_create_local(struct net *);
void rpcb_put_local(struct net *);
@ -191,6 +194,7 @@ void rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int);
struct net * rpc_net_ns(struct rpc_clnt *);
size_t rpc_max_payload(struct rpc_clnt *);
size_t rpc_max_bc_payload(struct rpc_clnt *);
unsigned int rpc_num_bc_slots(struct rpc_clnt *);
void rpc_force_rebind(struct rpc_clnt *);
size_t rpc_peeraddr(struct rpc_clnt *, struct sockaddr *, size_t);
const char *rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t);

7
include/linux/sunrpc/metrics.h
View File

@ -30,7 +30,7 @@
#include <linux/ktime.h>
#include <linux/spinlock.h>
#define RPC_IOSTATS_VERS "1.0"
#define RPC_IOSTATS_VERS "1.1"
struct rpc_iostats {
spinlock_t om_lock;
@ -66,6 +66,11 @@ struct rpc_iostats {
ktime_t om_queue, /* queued for xmit */
om_rtt, /* RPC RTT */
om_execute; /* RPC execution */
/*
* The count of operations that complete with tk_status < 0.
* These statuses usually indicate error conditions.
*/
unsigned long om_error_status;
} ____cacheline_aligned;
struct rpc_task;

4
include/linux/sunrpc/sched.h
View File

@ -126,6 +126,7 @@ struct rpc_task_setup {
#define RPC_CALL_MAJORSEEN 0x0020 /* major timeout seen */
#define RPC_TASK_ROOTCREDS 0x0040 /* force root creds */
#define RPC_TASK_DYNAMIC 0x0080 /* task was kmalloc'ed */
#define RPC_TASK_NO_ROUND_ROBIN 0x0100 /* send requests on "main" xprt */
#define RPC_TASK_SOFT 0x0200 /* Use soft timeouts */
#define RPC_TASK_SOFTCONN 0x0400 /* Fail if can't connect */
#define RPC_TASK_SENT 0x0800 /* message was sent */
@ -183,8 +184,9 @@ struct rpc_task_setup {
#define RPC_NR_PRIORITY (1 + RPC_PRIORITY_PRIVILEGED - RPC_PRIORITY_LOW)
struct rpc_timer {
struct timer_list timer;
struct list_head list;
unsigned long expires;
struct delayed_work dwork;
};
/*

10
include/linux/sunrpc/xprt.h
View File

@ -158,6 +158,7 @@ struct rpc_xprt_ops {
int (*bc_setup)(struct rpc_xprt *xprt,
unsigned int min_reqs);
size_t (*bc_maxpayload)(struct rpc_xprt *xprt);
unsigned int (*bc_num_slots)(struct rpc_xprt *xprt);
void (*bc_free_rqst)(struct rpc_rqst *rqst);
void (*bc_destroy)(struct rpc_xprt *xprt,
unsigned int max_reqs);
@ -238,6 +239,7 @@ struct rpc_xprt {
/*
* Send stuff
*/
atomic_long_t queuelen;
spinlock_t transport_lock; /* lock transport info */
spinlock_t reserve_lock; /* lock slot table */
spinlock_t queue_lock; /* send/receive queue lock */
@ -250,8 +252,9 @@ struct rpc_xprt {
#if defined(CONFIG_SUNRPC_BACKCHANNEL)
struct svc_serv *bc_serv; /* The RPC service which will */
/* process the callback */
int bc_alloc_count; /* Total number of preallocs */
atomic_t bc_free_slots;
unsigned int bc_alloc_max;
unsigned int bc_alloc_count; /* Total number of preallocs */
atomic_t bc_slot_count; /* Number of allocated slots */
spinlock_t bc_pa_lock; /* Protects the preallocated
* items */
struct list_head bc_pa_list; /* List of preallocated
@ -334,6 +337,9 @@ struct xprt_class {
*/
struct rpc_xprt *xprt_create_transport(struct xprt_create *args);
void xprt_connect(struct rpc_task *task);
unsigned long xprt_reconnect_delay(const struct rpc_xprt *xprt);
void xprt_reconnect_backoff(struct rpc_xprt *xprt,
unsigned long init_to);
void xprt_reserve(struct rpc_task *task);
void xprt_retry_reserve(struct rpc_task *task);
int xprt_reserve_xprt(struct rpc_xprt *xprt, struct rpc_task *task);

2
include/linux/sunrpc/xprtmultipath.h
View File

@ -15,6 +15,8 @@ struct rpc_xprt_switch {
struct kref xps_kref;
unsigned int xps_nxprts;
unsigned int xps_nactive;
atomic_long_t xps_queuelen;
struct list_head xps_xprt_list;
struct net * xps_net;

5
include/linux/sunrpc/xprtsock.h
View File

@ -56,6 +56,7 @@ struct sock_xprt {
*/
unsigned long sock_state;
struct delayed_work connect_worker;
struct work_struct error_worker;
struct work_struct recv_worker;
struct mutex recv_mutex;
struct sockaddr_storage srcaddr;
@ -84,6 +85,10 @@ struct sock_xprt {
#define XPRT_SOCK_CONNECTING 1U
#define XPRT_SOCK_DATA_READY (2)
#define XPRT_SOCK_UPD_TIMEOUT (3)
#define XPRT_SOCK_WAKE_ERROR (4)
#define XPRT_SOCK_WAKE_WRITE (5)
#define XPRT_SOCK_WAKE_PENDING (6)
#define XPRT_SOCK_WAKE_DISCONNECT (7)
#endif /* __KERNEL__ */

90
include/trace/events/rpcrdma.h
View File

@ -181,18 +181,6 @@ DECLARE_EVENT_CLASS(xprtrdma_wrch_event,
), \
TP_ARGS(task, mr, nsegs))
TRACE_DEFINE_ENUM(FRWR_IS_INVALID);
TRACE_DEFINE_ENUM(FRWR_IS_VALID);
TRACE_DEFINE_ENUM(FRWR_FLUSHED_FR);
TRACE_DEFINE_ENUM(FRWR_FLUSHED_LI);
#define xprtrdma_show_frwr_state(x) \
__print_symbolic(x, \
{ FRWR_IS_INVALID, "INVALID" }, \
{ FRWR_IS_VALID, "VALID" }, \
{ FRWR_FLUSHED_FR, "FLUSHED_FR" }, \
{ FRWR_FLUSHED_LI, "FLUSHED_LI" })
DECLARE_EVENT_CLASS(xprtrdma_frwr_done,
TP_PROTO(
const struct ib_wc *wc,
@ -203,22 +191,19 @@ DECLARE_EVENT_CLASS(xprtrdma_frwr_done,
TP_STRUCT__entry(
__field(const void *, mr)
__field(unsigned int, state)
__field(unsigned int, status)
__field(unsigned int, vendor_err)
),
TP_fast_assign(
__entry->mr = container_of(frwr, struct rpcrdma_mr, frwr);
__entry->state = frwr->fr_state;
__entry->status = wc->status;
__entry->vendor_err = __entry->status ? wc->vendor_err : 0;
),
TP_printk(
"mr=%p state=%s: %s (%u/0x%x)",
__entry->mr, xprtrdma_show_frwr_state(__entry->state),
rdma_show_wc_status(__entry->status),
"mr=%p: %s (%u/0x%x)",
__entry->mr, rdma_show_wc_status(__entry->status),
__entry->status, __entry->vendor_err
)
);
@ -390,6 +375,37 @@ DEFINE_RXPRT_EVENT(xprtrdma_op_inject_dsc);
DEFINE_RXPRT_EVENT(xprtrdma_op_close);
DEFINE_RXPRT_EVENT(xprtrdma_op_connect);
TRACE_EVENT(xprtrdma_op_set_cto,
TP_PROTO(
const struct rpcrdma_xprt *r_xprt,
unsigned long connect,
unsigned long reconnect
),
TP_ARGS(r_xprt, connect, reconnect),
TP_STRUCT__entry(
__field(const void *, r_xprt)
__field(unsigned long, connect)
__field(unsigned long, reconnect)
__string(addr, rpcrdma_addrstr(r_xprt))
__string(port, rpcrdma_portstr(r_xprt))
),
TP_fast_assign(
__entry->r_xprt = r_xprt;
__entry->connect = connect;
__entry->reconnect = reconnect;
__assign_str(addr, rpcrdma_addrstr(r_xprt));
__assign_str(port, rpcrdma_portstr(r_xprt));
),
TP_printk("peer=[%s]:%s r_xprt=%p: connect=%lu reconnect=%lu",
__get_str(addr), __get_str(port), __entry->r_xprt,
__entry->connect / HZ, __entry->reconnect / HZ
)
);
TRACE_EVENT(xprtrdma_qp_event,
TP_PROTO(
const struct rpcrdma_xprt *r_xprt,
@ -470,13 +486,12 @@ TRACE_DEFINE_ENUM(rpcrdma_replych);
TRACE_EVENT(xprtrdma_marshal,
TP_PROTO(
const struct rpc_rqst *rqst,
unsigned int hdrlen,
const struct rpcrdma_req *req,
unsigned int rtype,
unsigned int wtype
),
TP_ARGS(rqst, hdrlen, rtype, wtype),
TP_ARGS(req, rtype, wtype),
TP_STRUCT__entry(
__field(unsigned int, task_id)
@ -491,10 +506,12 @@ TRACE_EVENT(xprtrdma_marshal,
),
TP_fast_assign(
const struct rpc_rqst *rqst = &req->rl_slot;
__entry->task_id = rqst->rq_task->tk_pid;
__entry->client_id = rqst->rq_task->tk_client->cl_clid;
__entry->xid = be32_to_cpu(rqst->rq_xid);
__entry->hdrlen = hdrlen;
__entry->hdrlen = req->rl_hdrbuf.len;
__entry->headlen = rqst->rq_snd_buf.head[0].iov_len;
__entry->pagelen = rqst->rq_snd_buf.page_len;
__entry->taillen = rqst->rq_snd_buf.tail[0].iov_len;
@ -538,6 +555,33 @@ TRACE_EVENT(xprtrdma_marshal_failed,
)
);
TRACE_EVENT(xprtrdma_prepsend_failed,
TP_PROTO(const struct rpc_rqst *rqst,
int ret
),
TP_ARGS(rqst, ret),
TP_STRUCT__entry(
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(u32, xid)
__field(int, ret)
),
TP_fast_assign(
__entry->task_id = rqst->rq_task->tk_pid;
__entry->client_id = rqst->rq_task->tk_client->cl_clid;
__entry->xid = be32_to_cpu(rqst->rq_xid);
__entry->ret = ret;
),
TP_printk("task:%u@%u xid=0x%08x: ret=%d",
__entry->task_id, __entry->client_id, __entry->xid,
__entry->ret
)
);
TRACE_EVENT(xprtrdma_post_send,
TP_PROTO(
const struct rpcrdma_req *req,
@ -559,7 +603,8 @@ TRACE_EVENT(xprtrdma_post_send,
const struct rpc_rqst *rqst = &req->rl_slot;
__entry->task_id = rqst->rq_task->tk_pid;
__entry->client_id = rqst->rq_task->tk_client->cl_clid;
__entry->client_id = rqst->rq_task->tk_client ?
rqst->rq_task->tk_client->cl_clid : -1;
__entry->req = req;
__entry->num_sge = req->rl_sendctx->sc_wr.num_sge;
__entry->signaled = req->rl_sendctx->sc_wr.send_flags &
@ -698,6 +743,7 @@ TRACE_EVENT(xprtrdma_wc_receive,
DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_fastreg);
DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li);
DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li_wake);
DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li_done);
TRACE_EVENT(xprtrdma_frwr_alloc,
TP_PROTO(

2
net/sunrpc/Kconfig
View File

@ -35,7 +35,7 @@ config RPCSEC_GSS_KRB5
If unsure, say Y.
config CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES
config SUNRPC_DISABLE_INSECURE_ENCTYPES
bool "Secure RPC: Disable insecure Kerberos encryption types"
depends on RPCSEC_GSS_KRB5
default n

40
net/sunrpc/backchannel_rqst.c
View File

@ -31,25 +31,20 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#define RPCDBG_FACILITY RPCDBG_TRANS
#endif
#define BC_MAX_SLOTS 64U
unsigned int xprt_bc_max_slots(struct rpc_xprt *xprt)
{
return BC_MAX_SLOTS;
}
/*
* Helper routines that track the number of preallocation elements
* on the transport.
*/
static inline int xprt_need_to_requeue(struct rpc_xprt *xprt)
{
return xprt->bc_alloc_count < atomic_read(&xprt->bc_free_slots);
}
static inline void xprt_inc_alloc_count(struct rpc_xprt *xprt, unsigned int n)
{
atomic_add(n, &xprt->bc_free_slots);
xprt->bc_alloc_count += n;
}
static inline int xprt_dec_alloc_count(struct rpc_xprt *xprt, unsigned int n)
{
atomic_sub(n, &xprt->bc_free_slots);
return xprt->bc_alloc_count -= n;
return xprt->bc_alloc_count < xprt->bc_alloc_max;
}
/*
@ -145,6 +140,9 @@ int xprt_setup_bc(struct rpc_xprt *xprt, unsigned int min_reqs)
dprintk("RPC: setup backchannel transport\n");
if (min_reqs > BC_MAX_SLOTS)
min_reqs = BC_MAX_SLOTS;
/*
* We use a temporary list to keep track of the preallocated
* buffers. Once we're done building the list we splice it
@ -172,7 +170,9 @@ int xprt_setup_bc(struct rpc_xprt *xprt, unsigned int min_reqs)
*/
spin_lock(&xprt->bc_pa_lock);
list_splice(&tmp_list, &xprt->bc_pa_list);
xprt_inc_alloc_count(xprt, min_reqs);
xprt->bc_alloc_count += min_reqs;
xprt->bc_alloc_max += min_reqs;
atomic_add(min_reqs, &xprt->bc_slot_count);
spin_unlock(&xprt->bc_pa_lock);
dprintk("RPC: setup backchannel transport done\n");
@ -220,11 +220,13 @@ void xprt_destroy_bc(struct rpc_xprt *xprt, unsigned int max_reqs)
goto out;
spin_lock_bh(&xprt->bc_pa_lock);
xprt_dec_alloc_count(xprt, max_reqs);
xprt->bc_alloc_max -= max_reqs;
list_for_each_entry_safe(req, tmp, &xprt->bc_pa_list, rq_bc_pa_list) {
dprintk("RPC: req=%p\n", req);
list_del(&req->rq_bc_pa_list);
xprt_free_allocation(req);
xprt->bc_alloc_count--;
atomic_dec(&xprt->bc_slot_count);
if (--max_reqs == 0)
break;
}
@ -241,13 +243,14 @@ static struct rpc_rqst *xprt_get_bc_request(struct rpc_xprt *xprt, __be32 xid,
struct rpc_rqst *req = NULL;
dprintk("RPC: allocate a backchannel request\n");
if (atomic_read(&xprt->bc_free_slots) <= 0)
goto not_found;
if (list_empty(&xprt->bc_pa_list)) {
if (!new)
goto not_found;
if (atomic_read(&xprt->bc_slot_count) >= BC_MAX_SLOTS)
goto not_found;
list_add_tail(&new->rq_bc_pa_list, &xprt->bc_pa_list);
xprt->bc_alloc_count++;
atomic_inc(&xprt->bc_slot_count);
}
req = list_first_entry(&xprt->bc_pa_list, struct rpc_rqst,
rq_bc_pa_list);
@ -291,6 +294,7 @@ void xprt_free_bc_rqst(struct rpc_rqst *req)
if (xprt_need_to_requeue(xprt)) {
list_add_tail(&req->rq_bc_pa_list, &xprt->bc_pa_list);
xprt->bc_alloc_count++;
atomic_inc(&xprt->bc_slot_count);
req = NULL;
}
spin_unlock_bh(&xprt->bc_pa_lock);
@ -357,7 +361,7 @@ void xprt_complete_bc_request(struct rpc_rqst *req, uint32_t copied)
spin_lock(&xprt->bc_pa_lock);
list_del(&req->rq_bc_pa_list);
xprt_dec_alloc_count(xprt, 1);
xprt->bc_alloc_count--;
spin_unlock(&xprt->bc_pa_lock);
req->rq_private_buf.len = copied;

95
net/sunrpc/clnt.c
View File

@ -528,6 +528,8 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
.bc_xprt = args->bc_xprt,
};
char servername[48];
struct rpc_clnt *clnt;
int i;
if (args->bc_xprt) {
WARN_ON_ONCE(!(args->protocol & XPRT_TRANSPORT_BC));
@ -590,7 +592,15 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
if (args->flags & RPC_CLNT_CREATE_NONPRIVPORT)
xprt->resvport = 0;
return rpc_create_xprt(args, xprt);
clnt = rpc_create_xprt(args, xprt);
if (IS_ERR(clnt) || args->nconnect <= 1)
return clnt;
for (i = 0; i < args->nconnect - 1; i++) {
if (rpc_clnt_add_xprt(clnt, &xprtargs, NULL, NULL) < 0)
break;
}
return clnt;
}
EXPORT_SYMBOL_GPL(rpc_create);
@ -968,13 +978,46 @@ struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *old,
}
EXPORT_SYMBOL_GPL(rpc_bind_new_program);
struct rpc_xprt *
rpc_task_get_xprt(struct rpc_clnt *clnt, struct rpc_xprt *xprt)
{
struct rpc_xprt_switch *xps;
if (!xprt)
return NULL;
rcu_read_lock();
xps = rcu_dereference(clnt->cl_xpi.xpi_xpswitch);
atomic_long_inc(&xps->xps_queuelen);
rcu_read_unlock();
atomic_long_inc(&xprt->queuelen);
return xprt;
}
static void
rpc_task_release_xprt(struct rpc_clnt *clnt, struct rpc_xprt *xprt)
{
struct rpc_xprt_switch *xps;
atomic_long_dec(&xprt->queuelen);
rcu_read_lock();
xps = rcu_dereference(clnt->cl_xpi.xpi_xpswitch);
atomic_long_dec(&xps->xps_queuelen);
rcu_read_unlock();
xprt_put(xprt);
}
void rpc_task_release_transport(struct rpc_task *task)
{
struct rpc_xprt *xprt = task->tk_xprt;
if (xprt) {
task->tk_xprt = NULL;
xprt_put(xprt);
if (task->tk_client)
rpc_task_release_xprt(task->tk_client, xprt);
else
xprt_put(xprt);
}
}
EXPORT_SYMBOL_GPL(rpc_task_release_transport);
@ -983,6 +1026,7 @@ void rpc_task_release_client(struct rpc_task *task)
{
struct rpc_clnt *clnt = task->tk_client;
rpc_task_release_transport(task);
if (clnt != NULL) {
/* Remove from client task list */
spin_lock(&clnt->cl_lock);
@ -992,14 +1036,34 @@ void rpc_task_release_client(struct rpc_task *task)
rpc_release_client(clnt);
}
rpc_task_release_transport(task);
}
static struct rpc_xprt *
rpc_task_get_first_xprt(struct rpc_clnt *clnt)
{
struct rpc_xprt *xprt;
rcu_read_lock();
xprt = xprt_get(rcu_dereference(clnt->cl_xprt));
rcu_read_unlock();
return rpc_task_get_xprt(clnt, xprt);
}
static struct rpc_xprt *
rpc_task_get_next_xprt(struct rpc_clnt *clnt)
{
return rpc_task_get_xprt(clnt, xprt_iter_get_next(&clnt->cl_xpi));
}
static
void rpc_task_set_transport(struct rpc_task *task, struct rpc_clnt *clnt)
{
if (!task->tk_xprt)
task->tk_xprt = xprt_iter_get_next(&clnt->cl_xpi);
if (task->tk_xprt)
return;
if (task->tk_flags & RPC_TASK_NO_ROUND_ROBIN)
task->tk_xprt = rpc_task_get_first_xprt(clnt);
else
task->tk_xprt = rpc_task_get_next_xprt(clnt);
}
static
@ -1462,6 +1526,19 @@ size_t rpc_max_bc_payload(struct rpc_clnt *clnt)
}
EXPORT_SYMBOL_GPL(rpc_max_bc_payload);
unsigned int rpc_num_bc_slots(struct rpc_clnt *clnt)
{
struct rpc_xprt *xprt;
unsigned int ret;
rcu_read_lock();
xprt = rcu_dereference(clnt->cl_xprt);
ret = xprt->ops->bc_num_slots(xprt);
rcu_read_unlock();
return ret;
}
EXPORT_SYMBOL_GPL(rpc_num_bc_slots);
/**
* rpc_force_rebind - force transport to check that remote port is unchanged
* @clnt: client to rebind
@ -1788,6 +1865,7 @@ rpc_xdr_encode(struct rpc_task *task)
req->rq_snd_buf.head[0].iov_len = 0;
xdr_init_encode(&xdr, &req->rq_snd_buf,
req->rq_snd_buf.head[0].iov_base, req);
xdr_free_bvec(&req->rq_snd_buf);
if (rpc_encode_header(task, &xdr))
return;
@ -1827,8 +1905,6 @@ call_encode(struct rpc_task *task)
rpc_call_rpcerror(task, task->tk_status);
}
return;
} else {
xprt_request_prepare(task->tk_rqstp);
}
/* Add task to reply queue before transmission to avoid races */
@ -2696,6 +2772,10 @@ int rpc_clnt_test_and_add_xprt(struct rpc_clnt *clnt,
return -ENOMEM;
data->xps = xprt_switch_get(xps);
data->xprt = xprt_get(xprt);
if (rpc_xprt_switch_has_addr(data->xps, (struct sockaddr *)&xprt->addr)) {
rpc_cb_add_xprt_release(data);
goto success;
}
task = rpc_call_null_helper(clnt, xprt, NULL,
RPC_TASK_SOFT|RPC_TASK_SOFTCONN|RPC_TASK_ASYNC|RPC_TASK_NULLCREDS,
@ -2703,6 +2783,7 @@ int rpc_clnt_test_and_add_xprt(struct rpc_clnt *clnt,
if (IS_ERR(task))
return PTR_ERR(task);
rpc_put_task(task);
success:
return 1;
}
EXPORT_SYMBOL_GPL(rpc_clnt_test_and_add_xprt);

52
net/sunrpc/debugfs.c
View File

@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
/**
/*
* debugfs interface for sunrpc
*
* (c) 2014 Jeff Layton <jlayton@primarydata.com>
@ -117,12 +117,37 @@ static const struct file_operations tasks_fops = {
.release = tasks_release,
};
static int do_xprt_debugfs(struct rpc_clnt *clnt, struct rpc_xprt *xprt, void *numv)
{
int len;
char name[24]; /* enough for "../../rpc_xprt/ + 8 hex digits + NULL */
char link[9]; /* enough for 8 hex digits + NULL */
int *nump = numv;
if (IS_ERR_OR_NULL(xprt->debugfs))
return 0;
len = snprintf(name, sizeof(name), "../../rpc_xprt/%s",
xprt->debugfs->d_name.name);
if (len > sizeof(name))
return -1;
if (*nump == 0)
strcpy(link, "xprt");
else {
len = snprintf(link, sizeof(link), "xprt%d", *nump);
if (len > sizeof(link))
return -1;
}
debugfs_create_symlink(link, clnt->cl_debugfs, name);
(*nump)++;
return 0;
}
void
rpc_clnt_debugfs_register(struct rpc_clnt *clnt)
{
int len;
char name[24]; /* enough for "../../rpc_xprt/ + 8 hex digits + NULL */
struct rpc_xprt *xprt;
char name[9]; /* enough for 8 hex digits + NULL */
int xprtnum = 0;
len = snprintf(name, sizeof(name), "%x", clnt->cl_clid);
if (len >= sizeof(name))
@ -135,26 +160,7 @@ rpc_clnt_debugfs_register(struct rpc_clnt *clnt)
debugfs_create_file("tasks", S_IFREG | 0400, clnt->cl_debugfs, clnt,
&tasks_fops);
rcu_read_lock();
xprt = rcu_dereference(clnt->cl_xprt);
/* no "debugfs" dentry? Don't bother with the symlink. */
if (IS_ERR_OR_NULL(xprt->debugfs)) {
rcu_read_unlock();
return;
}
len = snprintf(name, sizeof(name), "../../rpc_xprt/%s",
xprt->debugfs->d_name.name);
rcu_read_unlock();
if (len >= sizeof(name))
goto out_err;
debugfs_create_symlink("xprt", clnt->cl_debugfs, name);
return;
out_err:
debugfs_remove_recursive(clnt->cl_debugfs);
clnt->cl_debugfs = NULL;
rpc_clnt_iterate_for_each_xprt(clnt, do_xprt_debugfs, &xprtnum);
}
void

81
net/sunrpc/sched.c
View File

@ -23,6 +23,7 @@
#include <linux/sched/mm.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/metrics.h>
#include "sunrpc.h"
@ -46,7 +47,7 @@ static mempool_t *rpc_buffer_mempool __read_mostly;
static void rpc_async_schedule(struct work_struct *);
static void rpc_release_task(struct rpc_task *task);
static void __rpc_queue_timer_fn(struct timer_list *t);
static void __rpc_queue_timer_fn(struct work_struct *);
/*
* RPC tasks sit here while waiting for conditions to improve.
@ -58,6 +59,7 @@ static struct rpc_wait_queue delay_queue;
*/
struct workqueue_struct *rpciod_workqueue __read_mostly;
struct workqueue_struct *xprtiod_workqueue __read_mostly;
EXPORT_SYMBOL_GPL(xprtiod_workqueue);
unsigned long
rpc_task_timeout(const struct rpc_task *task)
@ -87,13 +89,19 @@ __rpc_disable_timer(struct rpc_wait_queue *queue, struct rpc_task *task)
task->tk_timeout = 0;
list_del(&task->u.tk_wait.timer_list);
if (list_empty(&queue->timer_list.list))
del_timer(&queue->timer_list.timer);
cancel_delayed_work(&queue->timer_list.dwork);
}
static void
rpc_set_queue_timer(struct rpc_wait_queue *queue, unsigned long expires)
{
timer_reduce(&queue->timer_list.timer, expires);
unsigned long now = jiffies;
queue->timer_list.expires = expires;
if (time_before_eq(expires, now))
expires = 0;
else
expires -= now;
mod_delayed_work(rpciod_workqueue, &queue->timer_list.dwork, expires);
}
/*
@ -107,7 +115,8 @@ __rpc_add_timer(struct rpc_wait_queue *queue, struct rpc_task *task,
task->tk_pid, jiffies_to_msecs(timeout - jiffies));
task->tk_timeout = timeout;
rpc_set_queue_timer(queue, timeout);
if (list_empty(&queue->timer_list.list) || time_before(timeout, queue->timer_list.expires))
rpc_set_queue_timer(queue, timeout);
list_add(&task->u.tk_wait.timer_list, &queue->timer_list.list);
}
@ -250,7 +259,8 @@ static void __rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const c
queue->maxpriority = nr_queues - 1;
rpc_reset_waitqueue_priority(queue);
queue->qlen = 0;
timer_setup(&queue->timer_list.timer, __rpc_queue_timer_fn, 0);
queue->timer_list.expires = 0;
INIT_DEFERRABLE_WORK(&queue->timer_list.dwork, __rpc_queue_timer_fn);
INIT_LIST_HEAD(&queue->timer_list.list);
rpc_assign_waitqueue_name(queue, qname);
}
@ -269,7 +279,7 @@ EXPORT_SYMBOL_GPL(rpc_init_wait_queue);
void rpc_destroy_wait_queue(struct rpc_wait_queue *queue)
{
del_timer_sync(&queue->timer_list.timer);
cancel_delayed_work_sync(&queue->timer_list.dwork);
}
EXPORT_SYMBOL_GPL(rpc_destroy_wait_queue);
@ -424,9 +434,9 @@ void rpc_sleep_on_timeout(struct rpc_wait_queue *q, struct rpc_task *task,
/*
* Protect the queue operations.
*/
spin_lock_bh(&q->lock);
spin_lock(&q->lock);
__rpc_sleep_on_priority_timeout(q, task, timeout, task->tk_priority);
spin_unlock_bh(&q->lock);
spin_unlock(&q->lock);
}
EXPORT_SYMBOL_GPL(rpc_sleep_on_timeout);
@ -442,9 +452,9 @@ void rpc_sleep_on(struct rpc_wait_queue *q, struct rpc_task *task,
/*
* Protect the queue operations.
*/
spin_lock_bh(&q->lock);
spin_lock(&q->lock);
__rpc_sleep_on_priority(q, task, task->tk_priority);
spin_unlock_bh(&q->lock);
spin_unlock(&q->lock);
}
EXPORT_SYMBOL_GPL(rpc_sleep_on);
@ -458,9 +468,9 @@ void rpc_sleep_on_priority_timeout(struct rpc_wait_queue *q,
/*
* Protect the queue operations.
*/
spin_lock_bh(&q->lock);
spin_lock(&q->lock);
__rpc_sleep_on_priority_timeout(q, task, timeout, priority);
spin_unlock_bh(&q->lock);
spin_unlock(&q->lock);
}
EXPORT_SYMBOL_GPL(rpc_sleep_on_priority_timeout);
@ -475,9 +485,9 @@ void rpc_sleep_on_priority(struct rpc_wait_queue *q, struct rpc_task *task,
/*
* Protect the queue operations.
*/
spin_lock_bh(&q->lock);
spin_lock(&q->lock);
__rpc_sleep_on_priority(q, task, priority);
spin_unlock_bh(&q->lock);
spin_unlock(&q->lock);
}
EXPORT_SYMBOL_GPL(rpc_sleep_on_priority);
@ -555,9 +565,9 @@ void rpc_wake_up_queued_task_on_wq(struct workqueue_struct *wq,
{
if (!RPC_IS_QUEUED(task))
return;
spin_lock_bh(&queue->lock);
spin_lock(&queue->lock);
rpc_wake_up_task_on_wq_queue_locked(wq, queue, task);
spin_unlock_bh(&queue->lock);
spin_unlock(&queue->lock);
}
/*
@ -567,9 +577,9 @@ void rpc_wake_up_queued_task(struct rpc_wait_queue *queue, struct rpc_task *task
{
if (!RPC_IS_QUEUED(task))
return;
spin_lock_bh(&queue->lock);
spin_lock(&queue->lock);
rpc_wake_up_task_queue_locked(queue, task);
spin_unlock_bh(&queue->lock);
spin_unlock(&queue->lock);
}
EXPORT_SYMBOL_GPL(rpc_wake_up_queued_task);
@ -602,9 +612,9 @@ rpc_wake_up_queued_task_set_status(struct rpc_wait_queue *queue,
{
if (!RPC_IS_QUEUED(task))
return;
spin_lock_bh(&queue->lock);
spin_lock(&queue->lock);
rpc_wake_up_task_queue_set_status_locked(queue, task, status);
spin_unlock_bh(&queue->lock);
spin_unlock(&queue->lock);
}
/*
@ -667,12 +677,12 @@ struct rpc_task *rpc_wake_up_first_on_wq(struct workqueue_struct *wq,
dprintk("RPC: wake_up_first(%p \"%s\")\n",
queue, rpc_qname(queue));
spin_lock_bh(&queue->lock);
spin_lock(&queue->lock);
task = __rpc_find_next_queued(queue);
if (task != NULL)
task = rpc_wake_up_task_on_wq_queue_action_locked(wq, queue,
task, func, data);
spin_unlock_bh(&queue->lock);
spin_unlock(&queue->lock);
return task;
}
@ -711,7 +721,7 @@ void rpc_wake_up(struct rpc_wait_queue *queue)
{
struct list_head *head;
spin_lock_bh(&queue->lock);
spin_lock(&queue->lock);
head = &queue->tasks[queue->maxpriority];
for (;;) {
while (!list_empty(head)) {
@ -725,7 +735,7 @@ void rpc_wake_up(struct rpc_wait_queue *queue)
break;
head--;
}
spin_unlock_bh(&queue->lock);
spin_unlock(&queue->lock);
}
EXPORT_SYMBOL_GPL(rpc_wake_up);
@ -740,7 +750,7 @@ void rpc_wake_up_status(struct rpc_wait_queue *queue, int status)
{
struct list_head *head;
spin_lock_bh(&queue->lock);
spin_lock(&queue->lock);
head = &queue->tasks[queue->maxpriority];
for (;;) {
while (!list_empty(head)) {
@ -755,13 +765,15 @@ void rpc_wake_up_status(struct rpc_wait_queue *queue, int status)
break;
head--;
}
spin_unlock_bh(&queue->lock);
spin_unlock(&queue->lock);
}
EXPORT_SYMBOL_GPL(rpc_wake_up_status);
static void __rpc_queue_timer_fn(struct timer_list *t)
static void __rpc_queue_timer_fn(struct work_struct *work)
{
struct rpc_wait_queue *queue = from_timer(queue, t, timer_list.timer);
struct rpc_wait_queue *queue = container_of(work,
struct rpc_wait_queue,
timer_list.dwork.work);
struct rpc_task *task, *n;
unsigned long expires, now, timeo;
@ -832,6 +844,10 @@ rpc_reset_task_statistics(struct rpc_task *task)
void rpc_exit_task(struct rpc_task *task)
{
task->tk_action = NULL;
if (task->tk_ops->rpc_count_stats)
task->tk_ops->rpc_count_stats(task, task->tk_calldata);
else if (task->tk_client)
rpc_count_iostats(task, task->tk_client->cl_metrics);
if (task->tk_ops->rpc_call_done != NULL) {
task->tk_ops->rpc_call_done(task, task->tk_calldata);
if (task->tk_action != NULL) {
@ -927,13 +943,13 @@ static void __rpc_execute(struct rpc_task *task)
* rpc_task pointer may still be dereferenced.
*/
queue = task->tk_waitqueue;
spin_lock_bh(&queue->lock);
spin_lock(&queue->lock);
if (!RPC_IS_QUEUED(task)) {
spin_unlock_bh(&queue->lock);
spin_unlock(&queue->lock);
continue;
}
rpc_clear_running(task);
spin_unlock_bh(&queue->lock);
spin_unlock(&queue->lock);
if (task_is_async)
return;
@ -1076,7 +1092,8 @@ static void rpc_init_task(struct rpc_task *task, const struct rpc_task_setup *ta
/* Initialize workqueue for async tasks */
task->tk_workqueue = task_setup_data->workqueue;
task->tk_xprt = xprt_get(task_setup_data->rpc_xprt);
task->tk_xprt = rpc_task_get_xprt(task_setup_data->rpc_client,
xprt_get(task_setup_data->rpc_xprt));
task->tk_op_cred = get_rpccred(task_setup_data->rpc_op_cred);

23
net/sunrpc/stats.c
View File

@ -177,6 +177,8 @@ void rpc_count_iostats_metrics(const struct rpc_task *task,
execute = ktime_sub(now, task->tk_start);
op_metrics->om_execute = ktime_add(op_metrics->om_execute, execute);
if (task->tk_status < 0)
op_metrics->om_error_status++;
spin_unlock(&op_metrics->om_lock);
@ -219,13 +221,14 @@ static void _add_rpc_iostats(struct rpc_iostats *a, struct rpc_iostats *b)
a->om_queue = ktime_add(a->om_queue, b->om_queue);
a->om_rtt = ktime_add(a->om_rtt, b->om_rtt);
a->om_execute = ktime_add(a->om_execute, b->om_execute);
a->om_error_status += b->om_error_status;
}
static void _print_rpc_iostats(struct seq_file *seq, struct rpc_iostats *stats,
int op, const struct rpc_procinfo *procs)
{
_print_name(seq, op, procs);
seq_printf(seq, "%lu %lu %lu %Lu %Lu %Lu %Lu %Lu\n",
seq_printf(seq, "%lu %lu %lu %llu %llu %llu %llu %llu %lu\n",
stats->om_ops,
stats->om_ntrans,
stats->om_timeouts,
@ -233,12 +236,20 @@ static void _print_rpc_iostats(struct seq_file *seq, struct rpc_iostats *stats,
stats->om_bytes_recv,
ktime_to_ms(stats->om_queue),
ktime_to_ms(stats->om_rtt),
ktime_to_ms(stats->om_execute));
ktime_to_ms(stats->om_execute),
stats->om_error_status);
}
static int do_print_stats(struct rpc_clnt *clnt, struct rpc_xprt *xprt, void *seqv)
{
struct seq_file *seq = seqv;
xprt->ops->print_stats(xprt, seq);
return 0;
}
void rpc_clnt_show_stats(struct seq_file *seq, struct rpc_clnt *clnt)
{
struct rpc_xprt *xprt;
unsigned int op, maxproc = clnt->cl_maxproc;
if (!clnt->cl_metrics)
@ -248,11 +259,7 @@ void rpc_clnt_show_stats(struct seq_file *seq, struct rpc_clnt *clnt)
seq_printf(seq, "p/v: %u/%u (%s)\n",
clnt->cl_prog, clnt->cl_vers, clnt->cl_program->name);
rcu_read_lock();
xprt = rcu_dereference(clnt->cl_xprt);
if (xprt)
xprt->ops->print_stats(xprt, seq);
rcu_read_unlock();
rpc_clnt_iterate_for_each_xprt(clnt, do_print_stats, seq);
seq_printf(seq, "\tper-op statistics\n");
for (op = 0; op < maxproc; op++) {

2
net/sunrpc/svc.c
View File

@ -1595,7 +1595,7 @@ bc_svc_process(struct svc_serv *serv, struct rpc_rqst *req,
/* Parse and execute the bc call */
proc_error = svc_process_common(rqstp, argv, resv);
atomic_inc(&req->rq_xprt->bc_free_slots);
atomic_dec(&req->rq_xprt->bc_slot_count);
if (!proc_error) {
/* Processing error: drop the request */
xprt_free_bc_request(req);

101
net/sunrpc/xprt.c
View File

@ -302,9 +302,9 @@ static inline int xprt_lock_write(struct rpc_xprt *xprt, struct rpc_task *task)
if (test_bit(XPRT_LOCKED, &xprt->state) && xprt->snd_task == task)
return 1;
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
retval = xprt->ops->reserve_xprt(xprt, task);
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
return retval;
}
@ -381,9 +381,9 @@ static inline void xprt_release_write(struct rpc_xprt *xprt, struct rpc_task *ta
{
if (xprt->snd_task != task)
return;
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
xprt->ops->release_xprt(xprt, task);
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
}
/*
@ -435,9 +435,9 @@ xprt_request_get_cong(struct rpc_xprt *xprt, struct rpc_rqst *req)
if (req->rq_cong)
return true;
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
ret = __xprt_get_cong(xprt, req) != 0;
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
return ret;
}
EXPORT_SYMBOL_GPL(xprt_request_get_cong);
@ -464,9 +464,9 @@ static void
xprt_clear_congestion_window_wait(struct rpc_xprt *xprt)
{
if (test_and_clear_bit(XPRT_CWND_WAIT, &xprt->state)) {
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
__xprt_lock_write_next_cong(xprt);
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
}
}
@ -563,9 +563,9 @@ bool xprt_write_space(struct rpc_xprt *xprt)
if (!test_bit(XPRT_WRITE_SPACE, &xprt->state))
return false;
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
ret = xprt_clear_write_space_locked(xprt);
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
return ret;
}
EXPORT_SYMBOL_GPL(xprt_write_space);
@ -634,9 +634,9 @@ int xprt_adjust_timeout(struct rpc_rqst *req)
req->rq_retries = 0;
xprt_reset_majortimeo(req);
/* Reset the RTT counters == "slow start" */
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
rpc_init_rtt(req->rq_task->tk_client->cl_rtt, to->to_initval);
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
status = -ETIMEDOUT;
}
@ -668,11 +668,11 @@ static void xprt_autoclose(struct work_struct *work)
void xprt_disconnect_done(struct rpc_xprt *xprt)
{
dprintk("RPC: disconnected transport %p\n", xprt);
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
xprt_clear_connected(xprt);
xprt_clear_write_space_locked(xprt);
xprt_wake_pending_tasks(xprt, -ENOTCONN);
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
}
EXPORT_SYMBOL_GPL(xprt_disconnect_done);
@ -684,7 +684,7 @@ EXPORT_SYMBOL_GPL(xprt_disconnect_done);
void xprt_force_disconnect(struct rpc_xprt *xprt)
{
/* Don't race with the test_bit() in xprt_clear_locked() */
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
set_bit(XPRT_CLOSE_WAIT, &xprt->state);
/* Try to schedule an autoclose RPC call */
if (test_and_set_bit(XPRT_LOCKED, &xprt->state) == 0)
@ -692,7 +692,7 @@ void xprt_force_disconnect(struct rpc_xprt *xprt)
else if (xprt->snd_task)
rpc_wake_up_queued_task_set_status(&xprt->pending,
xprt->snd_task, -ENOTCONN);
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
}
EXPORT_SYMBOL_GPL(xprt_force_disconnect);
@ -726,7 +726,7 @@ xprt_request_retransmit_after_disconnect(struct rpc_task *task)
void xprt_conditional_disconnect(struct rpc_xprt *xprt, unsigned int cookie)
{
/* Don't race with the test_bit() in xprt_clear_locked() */
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
if (cookie != xprt->connect_cookie)
goto out;
if (test_bit(XPRT_CLOSING, &xprt->state))
@ -737,7 +737,7 @@ void xprt_conditional_disconnect(struct rpc_xprt *xprt, unsigned int cookie)
queue_work(xprtiod_workqueue, &xprt->task_cleanup);
xprt_wake_pending_tasks(xprt, -EAGAIN);
out:
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
}
static bool
@ -750,6 +750,7 @@ static void
xprt_schedule_autodisconnect(struct rpc_xprt *xprt)
__must_hold(&xprt->transport_lock)
{
xprt->last_used = jiffies;
if (RB_EMPTY_ROOT(&xprt->recv_queue) && xprt_has_timer(xprt))
mod_timer(&xprt->timer, xprt->last_used + xprt->idle_timeout);
}
@ -759,18 +760,13 @@ xprt_init_autodisconnect(struct timer_list *t)
{
struct rpc_xprt *xprt = from_timer(xprt, t, timer);
spin_lock(&xprt->transport_lock);
if (!RB_EMPTY_ROOT(&xprt->recv_queue))
goto out_abort;
return;
/* Reset xprt->last_used to avoid connect/autodisconnect cycling */
xprt->last_used = jiffies;
if (test_and_set_bit(XPRT_LOCKED, &xprt->state))
goto out_abort;
spin_unlock(&xprt->transport_lock);
return;
queue_work(xprtiod_workqueue, &xprt->task_cleanup);
return;
out_abort:
spin_unlock(&xprt->transport_lock);
}
bool xprt_lock_connect(struct rpc_xprt *xprt,
@ -779,7 +775,7 @@ bool xprt_lock_connect(struct rpc_xprt *xprt,
{
bool ret = false;
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
if (!test_bit(XPRT_LOCKED, &xprt->state))
goto out;
if (xprt->snd_task != task)
@ -787,13 +783,13 @@ bool xprt_lock_connect(struct rpc_xprt *xprt,
xprt->snd_task = cookie;
ret = true;
out:
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
return ret;
}
void xprt_unlock_connect(struct rpc_xprt *xprt, void *cookie)
{
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
if (xprt->snd_task != cookie)
goto out;
if (!test_bit(XPRT_LOCKED, &xprt->state))
@ -802,7 +798,7 @@ void xprt_unlock_connect(struct rpc_xprt *xprt, void *cookie)
xprt->ops->release_xprt(xprt, NULL);
xprt_schedule_autodisconnect(xprt);
out:
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
wake_up_bit(&xprt->state, XPRT_LOCKED);
}
@ -850,6 +846,38 @@ void xprt_connect(struct rpc_task *task)
xprt_release_write(xprt, task);
}
/**
* xprt_reconnect_delay - compute the wait before scheduling a connect
* @xprt: transport instance
*
*/
unsigned long xprt_reconnect_delay(const struct rpc_xprt *xprt)
{
unsigned long start, now = jiffies;
start = xprt->stat.connect_start + xprt->reestablish_timeout;
if (time_after(start, now))
return start - now;
return 0;
}
EXPORT_SYMBOL_GPL(xprt_reconnect_delay);
/**
* xprt_reconnect_backoff - compute the new re-establish timeout
* @xprt: transport instance
* @init_to: initial reestablish timeout
*
*/
void xprt_reconnect_backoff(struct rpc_xprt *xprt, unsigned long init_to)
{
xprt->reestablish_timeout <<= 1;
if (xprt->reestablish_timeout > xprt->max_reconnect_timeout)
xprt->reestablish_timeout = xprt->max_reconnect_timeout;
if (xprt->reestablish_timeout < init_to)
xprt->reestablish_timeout = init_to;
}
EXPORT_SYMBOL_GPL(xprt_reconnect_backoff);
enum xprt_xid_rb_cmp {
XID_RB_EQUAL,
XID_RB_LEFT,
@ -1013,6 +1041,8 @@ xprt_request_enqueue_receive(struct rpc_task *task)
if (!xprt_request_need_enqueue_receive(task, req))
return;
xprt_request_prepare(task->tk_rqstp);
spin_lock(&xprt->queue_lock);
/* Update the softirq receive buffer */
@ -1412,14 +1442,14 @@ xprt_request_transmit(struct rpc_rqst *req, struct rpc_task *snd_task)
xprt_inject_disconnect(xprt);
task->tk_flags |= RPC_TASK_SENT;
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
xprt->stat.sends++;
xprt->stat.req_u += xprt->stat.sends - xprt->stat.recvs;
xprt->stat.bklog_u += xprt->backlog.qlen;
xprt->stat.sending_u += xprt->sending.qlen;
xprt->stat.pending_u += xprt->pending.qlen;
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
req->rq_connect_cookie = connect_cookie;
out_dequeue:
@ -1765,18 +1795,13 @@ void xprt_release(struct rpc_task *task)
}
xprt = req->rq_xprt;
if (task->tk_ops->rpc_count_stats != NULL)
task->tk_ops->rpc_count_stats(task, task->tk_calldata);
else if (task->tk_client)
rpc_count_iostats(task, task->tk_client->cl_metrics);
xprt_request_dequeue_all(task, req);
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
xprt->ops->release_xprt(xprt, task);
if (xprt->ops->release_request)
xprt->ops->release_request(task);
xprt->last_used = jiffies;
xprt_schedule_autodisconnect(xprt);
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
if (req->rq_buffer)
xprt->ops->buf_free(task);
xprt_inject_disconnect(xprt);

89
net/sunrpc/xprtmultipath.c
View File

@ -19,7 +19,7 @@
#include <linux/sunrpc/addr.h>
#include <linux/sunrpc/xprtmultipath.h>
typedef struct rpc_xprt *(*xprt_switch_find_xprt_t)(struct list_head *head,
typedef struct rpc_xprt *(*xprt_switch_find_xprt_t)(struct rpc_xprt_switch *xps,
const struct rpc_xprt *cur);
static const struct rpc_xprt_iter_ops rpc_xprt_iter_singular;
@ -36,6 +36,7 @@ static void xprt_switch_add_xprt_locked(struct rpc_xprt_switch *xps,
if (xps->xps_nxprts == 0)
xps->xps_net = xprt->xprt_net;
xps->xps_nxprts++;
xps->xps_nactive++;
}
/**
@ -51,8 +52,7 @@ void rpc_xprt_switch_add_xprt(struct rpc_xprt_switch *xps,
if (xprt == NULL)
return;
spin_lock(&xps->xps_lock);
if ((xps->xps_net == xprt->xprt_net || xps->xps_net == NULL) &&
!rpc_xprt_switch_has_addr(xps, (struct sockaddr *)&xprt->addr))
if (xps->xps_net == xprt->xprt_net || xps->xps_net == NULL)
xprt_switch_add_xprt_locked(xps, xprt);
spin_unlock(&xps->xps_lock);
}
@ -62,6 +62,7 @@ static void xprt_switch_remove_xprt_locked(struct rpc_xprt_switch *xps,
{
if (unlikely(xprt == NULL))
return;
xps->xps_nactive--;
xps->xps_nxprts--;
if (xps->xps_nxprts == 0)
xps->xps_net = NULL;
@ -102,7 +103,9 @@ struct rpc_xprt_switch *xprt_switch_alloc(struct rpc_xprt *xprt,
if (xps != NULL) {
spin_lock_init(&xps->xps_lock);
kref_init(&xps->xps_kref);
xps->xps_nxprts = 0;
xps->xps_nxprts = xps->xps_nactive = 0;
atomic_long_set(&xps->xps_queuelen, 0);
xps->xps_net = NULL;
INIT_LIST_HEAD(&xps->xps_xprt_list);
xps->xps_iter_ops = &rpc_xprt_iter_singular;
xprt_switch_add_xprt_locked(xps, xprt);
@ -192,10 +195,22 @@ void xprt_iter_default_rewind(struct rpc_xprt_iter *xpi)
WRITE_ONCE(xpi->xpi_cursor, NULL);
}
static
bool xprt_is_active(const struct rpc_xprt *xprt)
{
return kref_read(&xprt->kref) != 0;
}
static
struct rpc_xprt *xprt_switch_find_first_entry(struct list_head *head)
{
return list_first_or_null_rcu(head, struct rpc_xprt, xprt_switch);
struct rpc_xprt *pos;
list_for_each_entry_rcu(pos, head, xprt_switch) {
if (xprt_is_active(pos))
return pos;
}
return NULL;
}
static
@ -213,9 +228,12 @@ struct rpc_xprt *xprt_switch_find_current_entry(struct list_head *head,
const struct rpc_xprt *cur)
{
struct rpc_xprt *pos;
bool found = false;
list_for_each_entry_rcu(pos, head, xprt_switch) {
if (cur == pos)
found = true;
if (found && xprt_is_active(pos))
return pos;
}
return NULL;
@ -260,9 +278,12 @@ struct rpc_xprt *xprt_switch_find_next_entry(struct list_head *head,
const struct rpc_xprt *cur)
{
struct rpc_xprt *pos, *prev = NULL;
bool found = false;
list_for_each_entry_rcu(pos, head, xprt_switch) {
if (cur == prev)
found = true;
if (found && xprt_is_active(pos))
return pos;
prev = pos;
}
@ -270,22 +291,15 @@ struct rpc_xprt *xprt_switch_find_next_entry(struct list_head *head,
}
static
struct rpc_xprt *xprt_switch_set_next_cursor(struct list_head *head,
struct rpc_xprt *xprt_switch_set_next_cursor(struct rpc_xprt_switch *xps,
struct rpc_xprt **cursor,
xprt_switch_find_xprt_t find_next)
{
struct rpc_xprt *cur, *pos, *old;
struct rpc_xprt *pos, *old;
cur = READ_ONCE(*cursor);
for (;;) {
old = cur;
pos = find_next(head, old);
if (pos == NULL)
break;
cur = cmpxchg_relaxed(cursor, old, pos);
if (cur == old)
break;
}
old = smp_load_acquire(cursor);
pos = find_next(xps, old);
smp_store_release(cursor, pos);
return pos;
}
@ -297,13 +311,11 @@ struct rpc_xprt *xprt_iter_next_entry_multiple(struct rpc_xprt_iter *xpi,
if (xps == NULL)
return NULL;
return xprt_switch_set_next_cursor(&xps->xps_xprt_list,
&xpi->xpi_cursor,
find_next);
return xprt_switch_set_next_cursor(xps, &xpi->xpi_cursor, find_next);
}
static
struct rpc_xprt *xprt_switch_find_next_entry_roundrobin(struct list_head *head,
struct rpc_xprt *__xprt_switch_find_next_entry_roundrobin(struct list_head *head,
const struct rpc_xprt *cur)
{
struct rpc_xprt *ret;
@ -314,6 +326,31 @@ struct rpc_xprt *xprt_switch_find_next_entry_roundrobin(struct list_head *head,
return xprt_switch_find_first_entry(head);
}
static
struct rpc_xprt *xprt_switch_find_next_entry_roundrobin(struct rpc_xprt_switch *xps,
const struct rpc_xprt *cur)
{
struct list_head *head = &xps->xps_xprt_list;
struct rpc_xprt *xprt;
unsigned int nactive;
for (;;) {
unsigned long xprt_queuelen, xps_queuelen;
xprt = __xprt_switch_find_next_entry_roundrobin(head, cur);
if (!xprt)
break;
xprt_queuelen = atomic_long_read(&xprt->queuelen);
xps_queuelen = atomic_long_read(&xps->xps_queuelen);
nactive = READ_ONCE(xps->xps_nactive);
/* Exit loop if xprt_queuelen <= average queue length */
if (xprt_queuelen * nactive <= xps_queuelen)
break;
cur = xprt;
}
return xprt;
}
static
struct rpc_xprt *xprt_iter_next_entry_roundrobin(struct rpc_xprt_iter *xpi)
{
@ -321,10 +358,18 @@ struct rpc_xprt *xprt_iter_next_entry_roundrobin(struct rpc_xprt_iter *xpi)
xprt_switch_find_next_entry_roundrobin);
}
static
struct rpc_xprt *xprt_switch_find_next_entry_all(struct rpc_xprt_switch *xps,
const struct rpc_xprt *cur)
{
return xprt_switch_find_next_entry(&xps->xps_xprt_list, cur);
}
static
struct rpc_xprt *xprt_iter_next_entry_all(struct rpc_xprt_iter *xpi)
{
return xprt_iter_next_entry_multiple(xpi, xprt_switch_find_next_entry);
return xprt_iter_next_entry_multiple(xpi,
xprt_switch_find_next_entry_all);
}
/*

7
net/sunrpc/xprtrdma/backchannel.c
View File

@ -52,6 +52,13 @@ size_t xprt_rdma_bc_maxpayload(struct rpc_xprt *xprt)
return maxmsg - RPCRDMA_HDRLEN_MIN;
}
unsigned int xprt_rdma_bc_max_slots(struct rpc_xprt *xprt)
{
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
return r_xprt->rx_buf.rb_bc_srv_max_requests;
}
static int rpcrdma_bc_marshal_reply(struct rpc_rqst *rqst)
{
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(rqst->rq_xprt);

331
net/sunrpc/xprtrdma/frwr_ops.c
View File

@ -144,6 +144,26 @@ frwr_mr_recycle_worker(struct work_struct *work)
frwr_release_mr(mr);
}
/* frwr_reset - Place MRs back on the free list
* @req: request to reset
*
* Used after a failed marshal. For FRWR, this means the MRs
* don't have to be fully released and recreated.
*
* NB: This is safe only as long as none of @req's MRs are
* involved with an ongoing asynchronous FAST_REG or LOCAL_INV
* Work Request.
*/
void frwr_reset(struct rpcrdma_req *req)
{
while (!list_empty(&req->rl_registered)) {
struct rpcrdma_mr *mr;
mr = rpcrdma_mr_pop(&req->rl_registered);
rpcrdma_mr_unmap_and_put(mr);
}
}
/**
* frwr_init_mr - Initialize one MR
* @ia: interface adapter
@ -168,7 +188,6 @@ int frwr_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr)
goto out_list_err;
mr->frwr.fr_mr = frmr;
mr->frwr.fr_state = FRWR_IS_INVALID;
mr->mr_dir = DMA_NONE;
INIT_LIST_HEAD(&mr->mr_list);
INIT_WORK(&mr->mr_recycle, frwr_mr_recycle_worker);
@ -297,65 +316,6 @@ size_t frwr_maxpages(struct rpcrdma_xprt *r_xprt)
(ia->ri_max_segs - 2) * ia->ri_max_frwr_depth);
}
/**
* frwr_wc_fastreg - Invoked by RDMA provider for a flushed FastReg WC
* @cq: completion queue (ignored)
* @wc: completed WR
*
*/
static void
frwr_wc_fastreg(struct ib_cq *cq, struct ib_wc *wc)
{
struct ib_cqe *cqe = wc->wr_cqe;
struct rpcrdma_frwr *frwr =
container_of(cqe, struct rpcrdma_frwr, fr_cqe);
/* WARNING: Only wr_cqe and status are reliable at this point */
if (wc->status != IB_WC_SUCCESS)
frwr->fr_state = FRWR_FLUSHED_FR;
trace_xprtrdma_wc_fastreg(wc, frwr);
}
/**
* frwr_wc_localinv - Invoked by RDMA provider for a flushed LocalInv WC
* @cq: completion queue (ignored)
* @wc: completed WR
*
*/
static void
frwr_wc_localinv(struct ib_cq *cq, struct ib_wc *wc)
{
struct ib_cqe *cqe = wc->wr_cqe;
struct rpcrdma_frwr *frwr = container_of(cqe, struct rpcrdma_frwr,
fr_cqe);
/* WARNING: Only wr_cqe and status are reliable at this point */
if (wc->status != IB_WC_SUCCESS)
frwr->fr_state = FRWR_FLUSHED_LI;
trace_xprtrdma_wc_li(wc, frwr);
}
/**
* frwr_wc_localinv_wake - Invoked by RDMA provider for a signaled LocalInv WC
* @cq: completion queue (ignored)
* @wc: completed WR
*
* Awaken anyone waiting for an MR to finish being fenced.
*/
static void
frwr_wc_localinv_wake(struct ib_cq *cq, struct ib_wc *wc)
{
struct ib_cqe *cqe = wc->wr_cqe;
struct rpcrdma_frwr *frwr = container_of(cqe, struct rpcrdma_frwr,
fr_cqe);
/* WARNING: Only wr_cqe and status are reliable at this point */
if (wc->status != IB_WC_SUCCESS)
frwr->fr_state = FRWR_FLUSHED_LI;
trace_xprtrdma_wc_li_wake(wc, frwr);
complete(&frwr->fr_linv_done);
}
/**
* frwr_map - Register a memory region
* @r_xprt: controlling transport
@ -378,23 +338,15 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt,
{
struct rpcrdma_ia *ia = &r_xprt->rx_ia;
bool holes_ok = ia->ri_mrtype == IB_MR_TYPE_SG_GAPS;
struct rpcrdma_frwr *frwr;
struct rpcrdma_mr *mr;
struct ib_mr *ibmr;
struct ib_reg_wr *reg_wr;
int i, n;
u8 key;
mr = NULL;
do {
if (mr)
rpcrdma_mr_recycle(mr);
mr = rpcrdma_mr_get(r_xprt);
if (!mr)
return ERR_PTR(-EAGAIN);
} while (mr->frwr.fr_state != FRWR_IS_INVALID);
frwr = &mr->frwr;
frwr->fr_state = FRWR_IS_VALID;
mr = rpcrdma_mr_get(r_xprt);
if (!mr)
goto out_getmr_err;
if (nsegs > ia->ri_max_frwr_depth)
nsegs = ia->ri_max_frwr_depth;
@ -423,7 +375,7 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt,
if (!mr->mr_nents)
goto out_dmamap_err;
ibmr = frwr->fr_mr;
ibmr = mr->frwr.fr_mr;
n = ib_map_mr_sg(ibmr, mr->mr_sg, mr->mr_nents, NULL, PAGE_SIZE);
if (unlikely(n != mr->mr_nents))
goto out_mapmr_err;
@ -433,7 +385,7 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt,
key = (u8)(ibmr->rkey & 0x000000FF);
ib_update_fast_reg_key(ibmr, ++key);
reg_wr = &frwr->fr_regwr;
reg_wr = &mr->frwr.fr_regwr;
reg_wr->mr = ibmr;
reg_wr->key = ibmr->rkey;
reg_wr->access = writing ?
@ -448,6 +400,10 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt,
*out = mr;
return seg;
out_getmr_err:
xprt_wait_for_buffer_space(&r_xprt->rx_xprt);
return ERR_PTR(-EAGAIN);
out_dmamap_err:
mr->mr_dir = DMA_NONE;
trace_xprtrdma_frwr_sgerr(mr, i);
@ -460,6 +416,23 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt,
return ERR_PTR(-EIO);
}
/**
* frwr_wc_fastreg - Invoked by RDMA provider for a flushed FastReg WC
* @cq: completion queue (ignored)
* @wc: completed WR
*
*/
static void frwr_wc_fastreg(struct ib_cq *cq, struct ib_wc *wc)
{
struct ib_cqe *cqe = wc->wr_cqe;
struct rpcrdma_frwr *frwr =
container_of(cqe, struct rpcrdma_frwr, fr_cqe);
/* WARNING: Only wr_cqe and status are reliable at this point */
trace_xprtrdma_wc_fastreg(wc, frwr);
/* The MR will get recycled when the associated req is retransmitted */
}
/**
* frwr_send - post Send WR containing the RPC Call message
* @ia: interface adapter
@ -512,31 +485,75 @@ void frwr_reminv(struct rpcrdma_rep *rep, struct list_head *mrs)
if (mr->mr_handle == rep->rr_inv_rkey) {
list_del_init(&mr->mr_list);
trace_xprtrdma_mr_remoteinv(mr);
mr->frwr.fr_state = FRWR_IS_INVALID;
rpcrdma_mr_unmap_and_put(mr);
break; /* only one invalidated MR per RPC */
}
}
static void __frwr_release_mr(struct ib_wc *wc, struct rpcrdma_mr *mr)
{
if (wc->status != IB_WC_SUCCESS)
rpcrdma_mr_recycle(mr);
else
rpcrdma_mr_unmap_and_put(mr);
}
/**
* frwr_wc_localinv - Invoked by RDMA provider for a LOCAL_INV WC
* @cq: completion queue (ignored)
* @wc: completed WR
*
*/
static void frwr_wc_localinv(struct ib_cq *cq, struct ib_wc *wc)
{
struct ib_cqe *cqe = wc->wr_cqe;
struct rpcrdma_frwr *frwr =
container_of(cqe, struct rpcrdma_frwr, fr_cqe);
struct rpcrdma_mr *mr = container_of(frwr, struct rpcrdma_mr, frwr);
/* WARNING: Only wr_cqe and status are reliable at this point */
trace_xprtrdma_wc_li(wc, frwr);
__frwr_release_mr(wc, mr);
}
/**
* frwr_wc_localinv_wake - Invoked by RDMA provider for a LOCAL_INV WC
* @cq: completion queue (ignored)
* @wc: completed WR
*
* Awaken anyone waiting for an MR to finish being fenced.
*/
static void frwr_wc_localinv_wake(struct ib_cq *cq, struct ib_wc *wc)
{
struct ib_cqe *cqe = wc->wr_cqe;
struct rpcrdma_frwr *frwr =
container_of(cqe, struct rpcrdma_frwr, fr_cqe);
struct rpcrdma_mr *mr = container_of(frwr, struct rpcrdma_mr, frwr);
/* WARNING: Only wr_cqe and status are reliable at this point */
trace_xprtrdma_wc_li_wake(wc, frwr);
complete(&frwr->fr_linv_done);
__frwr_release_mr(wc, mr);
}
/**
* frwr_unmap_sync - invalidate memory regions that were registered for @req
* @r_xprt: controlling transport
* @mrs: list of MRs to process
* @r_xprt: controlling transport instance
* @req: rpcrdma_req with a non-empty list of MRs to process
*
* Sleeps until it is safe for the host CPU to access the
* previously mapped memory regions.
*
* Caller ensures that @mrs is not empty before the call. This
* function empties the list.
* Sleeps until it is safe for the host CPU to access the previously mapped
* memory regions. This guarantees that registered MRs are properly fenced
* from the server before the RPC consumer accesses the data in them. It
* also ensures proper Send flow control: waking the next RPC waits until
* this RPC has relinquished all its Send Queue entries.
*/
void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs)
void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
{
struct ib_send_wr *first, **prev, *last;
const struct ib_send_wr *bad_wr;
struct rpcrdma_ia *ia = &r_xprt->rx_ia;
struct rpcrdma_frwr *frwr;
struct rpcrdma_mr *mr;
int count, rc;
int rc;
/* ORDER: Invalidate all of the MRs first
*
@ -544,33 +561,32 @@ void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs)
* a single ib_post_send() call.
*/
frwr = NULL;
count = 0;
prev = &first;
list_for_each_entry(mr, mrs, mr_list) {
mr->frwr.fr_state = FRWR_IS_INVALID;
while (!list_empty(&req->rl_registered)) {
mr = rpcrdma_mr_pop(&req->rl_registered);
trace_xprtrdma_mr_localinv(mr);
r_xprt->rx_stats.local_inv_needed++;
frwr = &mr->frwr;
trace_xprtrdma_mr_localinv(mr);
frwr->fr_cqe.done = frwr_wc_localinv;
last = &frwr->fr_invwr;
memset(last, 0, sizeof(*last));
last->next = NULL;
last->wr_cqe = &frwr->fr_cqe;
last->sg_list = NULL;
last->num_sge = 0;
last->opcode = IB_WR_LOCAL_INV;
last->send_flags = IB_SEND_SIGNALED;
last->ex.invalidate_rkey = mr->mr_handle;
count++;
*prev = last;
prev = &last->next;
}
if (!frwr)
goto unmap;
/* Strong send queue ordering guarantees that when the
* last WR in the chain completes, all WRs in the chain
* are complete.
*/
last->send_flags = IB_SEND_SIGNALED;
frwr->fr_cqe.done = frwr_wc_localinv_wake;
reinit_completion(&frwr->fr_linv_done);
@ -578,29 +594,20 @@ void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs)
* replaces the QP. The RPC reply handler won't call us
* unless ri_id->qp is a valid pointer.
*/
r_xprt->rx_stats.local_inv_needed++;
bad_wr = NULL;
rc = ib_post_send(ia->ri_id->qp, first, &bad_wr);
rc = ib_post_send(r_xprt->rx_ia.ri_id->qp, first, &bad_wr);
trace_xprtrdma_post_send(req, rc);
/* The final LOCAL_INV WR in the chain is supposed to
* do the wake. If it was never posted, the wake will
* not happen, so don't wait in that case.
*/
if (bad_wr != first)
wait_for_completion(&frwr->fr_linv_done);
if (rc)
goto out_release;
if (!rc)
return;
/* ORDER: Now DMA unmap all of the MRs, and return
* them to the free MR list.
*/
unmap:
while (!list_empty(mrs)) {
mr = rpcrdma_mr_pop(mrs);
rpcrdma_mr_unmap_and_put(mr);
}
return;
out_release:
pr_err("rpcrdma: FRWR invalidate ib_post_send returned %i\n", rc);
/* Unmap and release the MRs in the LOCAL_INV WRs that did not
* get posted.
/* Recycle MRs in the LOCAL_INV chain that did not get posted.
*/
while (bad_wr) {
frwr = container_of(bad_wr, struct rpcrdma_frwr,
@ -612,3 +619,101 @@ void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs)
rpcrdma_mr_recycle(mr);
}
}
/**
* frwr_wc_localinv_done - Invoked by RDMA provider for a signaled LOCAL_INV WC
* @cq: completion queue (ignored)
* @wc: completed WR
*
*/
static void frwr_wc_localinv_done(struct ib_cq *cq, struct ib_wc *wc)
{
struct ib_cqe *cqe = wc->wr_cqe;
struct rpcrdma_frwr *frwr =
container_of(cqe, struct rpcrdma_frwr, fr_cqe);
struct rpcrdma_mr *mr = container_of(frwr, struct rpcrdma_mr, frwr);
/* WARNING: Only wr_cqe and status are reliable at this point */
trace_xprtrdma_wc_li_done(wc, frwr);
rpcrdma_complete_rqst(frwr->fr_req->rl_reply);
__frwr_release_mr(wc, mr);
}
/**
* frwr_unmap_async - invalidate memory regions that were registered for @req
* @r_xprt: controlling transport instance
* @req: rpcrdma_req with a non-empty list of MRs to process
*
* This guarantees that registered MRs are properly fenced from the
* server before the RPC consumer accesses the data in them. It also
* ensures proper Send flow control: waking the next RPC waits until
* this RPC has relinquished all its Send Queue entries.
*/
void frwr_unmap_async(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
{
struct ib_send_wr *first, *last, **prev;
const struct ib_send_wr *bad_wr;
struct rpcrdma_frwr *frwr;
struct rpcrdma_mr *mr;
int rc;
/* Chain the LOCAL_INV Work Requests and post them with
* a single ib_post_send() call.
*/
frwr = NULL;
prev = &first;
while (!list_empty(&req->rl_registered)) {
mr = rpcrdma_mr_pop(&req->rl_registered);
trace_xprtrdma_mr_localinv(mr);
r_xprt->rx_stats.local_inv_needed++;
frwr = &mr->frwr;
frwr->fr_cqe.done = frwr_wc_localinv;
frwr->fr_req = req;
last = &frwr->fr_invwr;
last->next = NULL;
last->wr_cqe = &frwr->fr_cqe;
last->sg_list = NULL;
last->num_sge = 0;
last->opcode = IB_WR_LOCAL_INV;
last->send_flags = IB_SEND_SIGNALED;
last->ex.invalidate_rkey = mr->mr_handle;
*prev = last;
prev = &last->next;
}
/* Strong send queue ordering guarantees that when the
* last WR in the chain completes, all WRs in the chain
* are complete. The last completion will wake up the
* RPC waiter.
*/
frwr->fr_cqe.done = frwr_wc_localinv_done;
/* Transport disconnect drains the receive CQ before it
* replaces the QP. The RPC reply handler won't call us
* unless ri_id->qp is a valid pointer.
*/
bad_wr = NULL;
rc = ib_post_send(r_xprt->rx_ia.ri_id->qp, first, &bad_wr);
trace_xprtrdma_post_send(req, rc);
if (!rc)
return;
/* Recycle MRs in the LOCAL_INV chain that did not get posted.
*/
while (bad_wr) {
frwr = container_of(bad_wr, struct rpcrdma_frwr, fr_invwr);
mr = container_of(frwr, struct rpcrdma_mr, frwr);
bad_wr = bad_wr->next;
rpcrdma_mr_recycle(mr);
}
/* The final LOCAL_INV WR in the chain is supposed to
* do the wake. If it was never posted, the wake will
* not happen, so wake here in that case.
*/
rpcrdma_complete_rqst(req->rl_reply);
}

160
net/sunrpc/xprtrdma/rpc_rdma.c
View File

@ -366,6 +366,9 @@ rpcrdma_encode_read_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req,
unsigned int pos;
int nsegs;
if (rtype == rpcrdma_noch)
goto done;
pos = rqst->rq_snd_buf.head[0].iov_len;
if (rtype == rpcrdma_areadch)
pos = 0;
@ -389,7 +392,8 @@ rpcrdma_encode_read_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req,
nsegs -= mr->mr_nents;
} while (nsegs);
return 0;
done:
return encode_item_not_present(xdr);
}
/* Register and XDR encode the Write list. Supports encoding a list
@ -417,6 +421,9 @@ rpcrdma_encode_write_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req,
int nsegs, nchunks;
__be32 *segcount;
if (wtype != rpcrdma_writech)
goto done;
seg = req->rl_segments;
nsegs = rpcrdma_convert_iovs(r_xprt, &rqst->rq_rcv_buf,
rqst->rq_rcv_buf.head[0].iov_len,
@ -451,7 +458,8 @@ rpcrdma_encode_write_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req,
/* Update count of segments in this Write chunk */
*segcount = cpu_to_be32(nchunks);
return 0;
done:
return encode_item_not_present(xdr);
}
/* Register and XDR encode the Reply chunk. Supports encoding an array
@ -476,6 +484,9 @@ rpcrdma_encode_reply_chunk(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req,
int nsegs, nchunks;
__be32 *segcount;
if (wtype != rpcrdma_replych)
return encode_item_not_present(xdr);
seg = req->rl_segments;
nsegs = rpcrdma_convert_iovs(r_xprt, &rqst->rq_rcv_buf, 0, wtype, seg);
if (nsegs < 0)
@ -511,6 +522,16 @@ rpcrdma_encode_reply_chunk(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req,
return 0;
}
static void rpcrdma_sendctx_done(struct kref *kref)
{
struct rpcrdma_req *req =
container_of(kref, struct rpcrdma_req, rl_kref);
struct rpcrdma_rep *rep = req->rl_reply;
rpcrdma_complete_rqst(rep);
rep->rr_rxprt->rx_stats.reply_waits_for_send++;
}
/**
* rpcrdma_sendctx_unmap - DMA-unmap Send buffer
* @sc: sendctx containing SGEs to unmap
@ -520,6 +541,9 @@ void rpcrdma_sendctx_unmap(struct rpcrdma_sendctx *sc)
{
struct ib_sge *sge;
if (!sc->sc_unmap_count)
return;
/* The first two SGEs contain the transport header and
* the inline buffer. These are always left mapped so
* they can be cheaply re-used.
@ -529,9 +553,7 @@ void rpcrdma_sendctx_unmap(struct rpcrdma_sendctx *sc)
ib_dma_unmap_page(sc->sc_device, sge->addr, sge->length,
DMA_TO_DEVICE);
if (test_and_clear_bit(RPCRDMA_REQ_F_TX_RESOURCES,
&sc->sc_req->rl_flags))
wake_up_bit(&sc->sc_req->rl_flags, RPCRDMA_REQ_F_TX_RESOURCES);
kref_put(&sc->sc_req->rl_kref, rpcrdma_sendctx_done);
}
/* Prepare an SGE for the RPC-over-RDMA transport header.
@ -666,7 +688,7 @@ static bool rpcrdma_prepare_msg_sges(struct rpcrdma_xprt *r_xprt,
out:
sc->sc_wr.num_sge += sge_no;
if (sc->sc_unmap_count)
__set_bit(RPCRDMA_REQ_F_TX_RESOURCES, &req->rl_flags);
kref_get(&req->rl_kref);
return true;
out_regbuf:
@ -699,22 +721,28 @@ rpcrdma_prepare_send_sges(struct rpcrdma_xprt *r_xprt,
struct rpcrdma_req *req, u32 hdrlen,
struct xdr_buf *xdr, enum rpcrdma_chunktype rtype)
{
int ret;
ret = -EAGAIN;
req->rl_sendctx = rpcrdma_sendctx_get_locked(r_xprt);
if (!req->rl_sendctx)
return -EAGAIN;
goto err;
req->rl_sendctx->sc_wr.num_sge = 0;
req->rl_sendctx->sc_unmap_count = 0;
req->rl_sendctx->sc_req = req;
__clear_bit(RPCRDMA_REQ_F_TX_RESOURCES, &req->rl_flags);
kref_init(&req->rl_kref);
ret = -EIO;
if (!rpcrdma_prepare_hdr_sge(r_xprt, req, hdrlen))
return -EIO;
goto err;
if (rtype != rpcrdma_areadch)
if (!rpcrdma_prepare_msg_sges(r_xprt, req, xdr, rtype))
return -EIO;
goto err;
return 0;
err:
trace_xprtrdma_prepsend_failed(&req->rl_slot, ret);
return ret;
}
/**
@ -842,50 +870,28 @@ rpcrdma_marshal_req(struct rpcrdma_xprt *r_xprt, struct rpc_rqst *rqst)
* send a Call message with a Position Zero Read chunk and a
* regular Read chunk at the same time.
*/
if (rtype != rpcrdma_noch) {
ret = rpcrdma_encode_read_list(r_xprt, req, rqst, rtype);
if (ret)
goto out_err;
}
ret = encode_item_not_present(xdr);
ret = rpcrdma_encode_read_list(r_xprt, req, rqst, rtype);
if (ret)
goto out_err;
ret = rpcrdma_encode_write_list(r_xprt, req, rqst, wtype);
if (ret)
goto out_err;
ret = rpcrdma_encode_reply_chunk(r_xprt, req, rqst, wtype);
if (ret)
goto out_err;
if (wtype == rpcrdma_writech) {
ret = rpcrdma_encode_write_list(r_xprt, req, rqst, wtype);
if (ret)
goto out_err;
}
ret = encode_item_not_present(xdr);
if (ret)
goto out_err;
if (wtype != rpcrdma_replych)
ret = encode_item_not_present(xdr);
else
ret = rpcrdma_encode_reply_chunk(r_xprt, req, rqst, wtype);
if (ret)
goto out_err;
trace_xprtrdma_marshal(rqst, xdr_stream_pos(xdr), rtype, wtype);
ret = rpcrdma_prepare_send_sges(r_xprt, req, xdr_stream_pos(xdr),
ret = rpcrdma_prepare_send_sges(r_xprt, req, req->rl_hdrbuf.len,
&rqst->rq_snd_buf, rtype);
if (ret)
goto out_err;
trace_xprtrdma_marshal(req, rtype, wtype);
return 0;
out_err:
trace_xprtrdma_marshal_failed(rqst, ret);
switch (ret) {
case -EAGAIN:
xprt_wait_for_buffer_space(rqst->rq_xprt);
break;
case -ENOBUFS:
break;
default:
r_xprt->rx_stats.failed_marshal_count++;
}
r_xprt->rx_stats.failed_marshal_count++;
frwr_reset(req);
return ret;
}
@ -1269,51 +1275,17 @@ void rpcrdma_complete_rqst(struct rpcrdma_rep *rep)
goto out;
}
void rpcrdma_release_rqst(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
static void rpcrdma_reply_done(struct kref *kref)
{
/* Invalidate and unmap the data payloads before waking
* the waiting application. This guarantees the memory
* regions are properly fenced from the server before the
* application accesses the data. It also ensures proper
* send flow control: waking the next RPC waits until this
* RPC has relinquished all its Send Queue entries.
*/
if (!list_empty(&req->rl_registered))
frwr_unmap_sync(r_xprt, &req->rl_registered);
struct rpcrdma_req *req =
container_of(kref, struct rpcrdma_req, rl_kref);
/* Ensure that any DMA mapped pages associated with
* the Send of the RPC Call have been unmapped before
* allowing the RPC to complete. This protects argument
* memory not controlled by the RPC client from being
* re-used before we're done with it.
*/
if (test_bit(RPCRDMA_REQ_F_TX_RESOURCES, &req->rl_flags)) {
r_xprt->rx_stats.reply_waits_for_send++;
out_of_line_wait_on_bit(&req->rl_flags,
RPCRDMA_REQ_F_TX_RESOURCES,
bit_wait,
TASK_UNINTERRUPTIBLE);
}
rpcrdma_complete_rqst(req->rl_reply);
}
/* Reply handling runs in the poll worker thread. Anything that
* might wait is deferred to a separate workqueue.
*/
void rpcrdma_deferred_completion(struct work_struct *work)
{
struct rpcrdma_rep *rep =
container_of(work, struct rpcrdma_rep, rr_work);
struct rpcrdma_req *req = rpcr_to_rdmar(rep->rr_rqst);
struct rpcrdma_xprt *r_xprt = rep->rr_rxprt;
trace_xprtrdma_defer_cmp(rep);
if (rep->rr_wc_flags & IB_WC_WITH_INVALIDATE)
frwr_reminv(rep, &req->rl_registered);
rpcrdma_release_rqst(r_xprt, req);
rpcrdma_complete_rqst(rep);
}
/* Process received RPC/RDMA messages.
/**
* rpcrdma_reply_handler - Process received RPC/RDMA messages
* @rep: Incoming rpcrdma_rep object to process
*
* Errors must result in the RPC task either being awakened, or
* allowed to timeout, to discover the errors at that time.
@ -1360,10 +1332,10 @@ void rpcrdma_reply_handler(struct rpcrdma_rep *rep)
else if (credits > buf->rb_max_requests)
credits = buf->rb_max_requests;
if (buf->rb_credits != credits) {
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
buf->rb_credits = credits;
xprt->cwnd = credits << RPC_CWNDSHIFT;
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
}
req = rpcr_to_rdmar(rqst);
@ -1373,10 +1345,16 @@ void rpcrdma_reply_handler(struct rpcrdma_rep *rep)
}
req->rl_reply = rep;
rep->rr_rqst = rqst;
clear_bit(RPCRDMA_REQ_F_PENDING, &req->rl_flags);
trace_xprtrdma_reply(rqst->rq_task, rep, req, credits);
queue_work(buf->rb_completion_wq, &rep->rr_work);
if (rep->rr_wc_flags & IB_WC_WITH_INVALIDATE)
frwr_reminv(rep, &req->rl_registered);
if (!list_empty(&req->rl_registered))
frwr_unmap_async(r_xprt, req);
/* LocalInv completion will complete the RPC */
else
kref_put(&req->rl_kref, rpcrdma_reply_done);
return;
out_badversion:

4
net/sunrpc/xprtrdma/svc_rdma_backchannel.c
View File

@ -72,9 +72,9 @@ int svc_rdma_handle_bc_reply(struct rpc_xprt *xprt, __be32 *rdma_resp,
else if (credits > r_xprt->rx_buf.rb_bc_max_requests)
credits = r_xprt->rx_buf.rb_bc_max_requests;
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
xprt->cwnd = credits << RPC_CWNDSHIFT;
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
spin_lock(&xprt->queue_lock);
ret = 0;

8
net/sunrpc/xprtrdma/svc_rdma_transport.c
View File

@ -226,9 +226,9 @@ static void handle_connect_req(struct rdma_cm_id *new_cma_id,
* Enqueue the new transport on the accept queue of the listening
* transport
*/
spin_lock_bh(&listen_xprt->sc_lock);
spin_lock(&listen_xprt->sc_lock);
list_add_tail(&newxprt->sc_accept_q, &listen_xprt->sc_accept_q);
spin_unlock_bh(&listen_xprt->sc_lock);
spin_unlock(&listen_xprt->sc_lock);
set_bit(XPT_CONN, &listen_xprt->sc_xprt.xpt_flags);
svc_xprt_enqueue(&listen_xprt->sc_xprt);
@ -401,7 +401,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt)
listen_rdma = container_of(xprt, struct svcxprt_rdma, sc_xprt);
clear_bit(XPT_CONN, &xprt->xpt_flags);
/* Get the next entry off the accept list */
spin_lock_bh(&listen_rdma->sc_lock);
spin_lock(&listen_rdma->sc_lock);
if (!list_empty(&listen_rdma->sc_accept_q)) {
newxprt = list_entry(listen_rdma->sc_accept_q.next,
struct svcxprt_rdma, sc_accept_q);
@ -409,7 +409,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt)
}
if (!list_empty(&listen_rdma->sc_accept_q))
set_bit(XPT_CONN, &listen_rdma->sc_xprt.xpt_flags);
spin_unlock_bh(&listen_rdma->sc_lock);
spin_unlock(&listen_rdma->sc_lock);
if (!newxprt)
return NULL;

84
net/sunrpc/xprtrdma/transport.c
View File

@ -298,6 +298,7 @@ xprt_rdma_destroy(struct rpc_xprt *xprt)
module_put(THIS_MODULE);
}
/* 60 second timeout, no retries */
static const struct rpc_timeout xprt_rdma_default_timeout = {
.to_initval = 60 * HZ,
.to_maxval = 60 * HZ,
@ -323,8 +324,9 @@ xprt_setup_rdma(struct xprt_create *args)
if (!xprt)
return ERR_PTR(-ENOMEM);
/* 60 second timeout, no retries */
xprt->timeout = &xprt_rdma_default_timeout;
xprt->connect_timeout = xprt->timeout->to_initval;
xprt->max_reconnect_timeout = xprt->timeout->to_maxval;
xprt->bind_timeout = RPCRDMA_BIND_TO;
xprt->reestablish_timeout = RPCRDMA_INIT_REEST_TO;
xprt->idle_timeout = RPCRDMA_IDLE_DISC_TO;
@ -487,31 +489,64 @@ xprt_rdma_timer(struct rpc_xprt *xprt, struct rpc_task *task)
}
/**
* xprt_rdma_connect - try to establish a transport connection
* xprt_rdma_set_connect_timeout - set timeouts for establishing a connection
* @xprt: controlling transport instance
* @connect_timeout: reconnect timeout after client disconnects
* @reconnect_timeout: reconnect timeout after server disconnects
*
*/
static void xprt_rdma_tcp_set_connect_timeout(struct rpc_xprt *xprt,
unsigned long connect_timeout,
unsigned long reconnect_timeout)
{
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
trace_xprtrdma_op_set_cto(r_xprt, connect_timeout, reconnect_timeout);
spin_lock(&xprt->transport_lock);
if (connect_timeout < xprt->connect_timeout) {
struct rpc_timeout to;
unsigned long initval;
to = *xprt->timeout;
initval = connect_timeout;
if (initval < RPCRDMA_INIT_REEST_TO << 1)
initval = RPCRDMA_INIT_REEST_TO << 1;
to.to_initval = initval;
to.to_maxval = initval;
r_xprt->rx_timeout = to;
xprt->timeout = &r_xprt->rx_timeout;
xprt->connect_timeout = connect_timeout;
}
if (reconnect_timeout < xprt->max_reconnect_timeout)
xprt->max_reconnect_timeout = reconnect_timeout;
spin_unlock(&xprt->transport_lock);
}
/**
* xprt_rdma_connect - schedule an attempt to reconnect
* @xprt: transport state
* @task: RPC scheduler context
* @task: RPC scheduler context (unused)
*
*/
static void
xprt_rdma_connect(struct rpc_xprt *xprt, struct rpc_task *task)
{
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
unsigned long delay;
trace_xprtrdma_op_connect(r_xprt);
delay = 0;
if (r_xprt->rx_ep.rep_connected != 0) {
/* Reconnect */
schedule_delayed_work(&r_xprt->rx_connect_worker,
xprt->reestablish_timeout);
xprt->reestablish_timeout <<= 1;
if (xprt->reestablish_timeout > RPCRDMA_MAX_REEST_TO)
xprt->reestablish_timeout = RPCRDMA_MAX_REEST_TO;
else if (xprt->reestablish_timeout < RPCRDMA_INIT_REEST_TO)
xprt->reestablish_timeout = RPCRDMA_INIT_REEST_TO;
} else {
schedule_delayed_work(&r_xprt->rx_connect_worker, 0);
if (!RPC_IS_ASYNC(task))
flush_delayed_work(&r_xprt->rx_connect_worker);
delay = xprt_reconnect_delay(xprt);
xprt_reconnect_backoff(xprt, RPCRDMA_INIT_REEST_TO);
}
queue_delayed_work(xprtiod_workqueue, &r_xprt->rx_connect_worker,
delay);
}
/**
@ -550,8 +585,11 @@ xprt_rdma_alloc_slot(struct rpc_xprt *xprt, struct rpc_task *task)
static void
xprt_rdma_free_slot(struct rpc_xprt *xprt, struct rpc_rqst *rqst)
{
struct rpcrdma_xprt *r_xprt =
container_of(xprt, struct rpcrdma_xprt, rx_xprt);
memset(rqst, 0, sizeof(*rqst));
rpcrdma_buffer_put(rpcr_to_rdmar(rqst));
rpcrdma_buffer_put(&r_xprt->rx_buf, rpcr_to_rdmar(rqst));
rpc_wake_up_next(&xprt->backlog);
}
@ -618,9 +656,16 @@ xprt_rdma_free(struct rpc_task *task)
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(rqst->rq_xprt);
struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
if (test_bit(RPCRDMA_REQ_F_PENDING, &req->rl_flags))
rpcrdma_release_rqst(r_xprt, req);
trace_xprtrdma_op_free(task, req);
if (!list_empty(&req->rl_registered))
frwr_unmap_sync(r_xprt, req);
/* XXX: If the RPC is completing because of a signal and
* not because a reply was received, we ought to ensure
* that the Send completion has fired, so that memory
* involved with the Send is not still visible to the NIC.
*/
}
/**
@ -667,7 +712,6 @@ xprt_rdma_send_request(struct rpc_rqst *rqst)
goto drop_connection;
rqst->rq_xtime = ktime_get();
__set_bit(RPCRDMA_REQ_F_PENDING, &req->rl_flags);
if (rpcrdma_ep_post(&r_xprt->rx_ia, &r_xprt->rx_ep, req))
goto drop_connection;
@ -760,6 +804,7 @@ static const struct rpc_xprt_ops xprt_rdma_procs = {
.send_request = xprt_rdma_send_request,
.close = xprt_rdma_close,
.destroy = xprt_rdma_destroy,
.set_connect_timeout = xprt_rdma_tcp_set_connect_timeout,
.print_stats = xprt_rdma_print_stats,
.enable_swap = xprt_rdma_enable_swap,
.disable_swap = xprt_rdma_disable_swap,
@ -767,6 +812,7 @@ static const struct rpc_xprt_ops xprt_rdma_procs = {
#if defined(CONFIG_SUNRPC_BACKCHANNEL)
.bc_setup = xprt_rdma_bc_setup,
.bc_maxpayload = xprt_rdma_bc_maxpayload,
.bc_num_slots = xprt_rdma_bc_max_slots,
.bc_free_rqst = xprt_rdma_bc_free_rqst,
.bc_destroy = xprt_rdma_bc_destroy,
#endif

117
net/sunrpc/xprtrdma/verbs.c
View File

@ -89,14 +89,12 @@ static void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp);
*/
static void rpcrdma_xprt_drain(struct rpcrdma_xprt *r_xprt)
{
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
struct rpcrdma_ia *ia = &r_xprt->rx_ia;
/* Flush Receives, then wait for deferred Reply work
* to complete.
*/
ib_drain_rq(ia->ri_id->qp);
drain_workqueue(buf->rb_completion_wq);
/* Deferred Reply processing might have scheduled
* local invalidations.
@ -901,7 +899,7 @@ struct rpcrdma_sendctx *rpcrdma_sendctx_get_locked(struct rpcrdma_xprt *r_xprt)
* completions recently. This is a sign the Send Queue is
* backing up. Cause the caller to pause and try again.
*/
set_bit(RPCRDMA_BUF_F_EMPTY_SCQ, &buf->rb_flags);
xprt_wait_for_buffer_space(&r_xprt->rx_xprt);
r_xprt->rx_stats.empty_sendctx_q++;
return NULL;
}
@ -936,10 +934,7 @@ rpcrdma_sendctx_put_locked(struct rpcrdma_sendctx *sc)
/* Paired with READ_ONCE */
smp_store_release(&buf->rb_sc_tail, next_tail);
if (test_and_clear_bit(RPCRDMA_BUF_F_EMPTY_SCQ, &buf->rb_flags)) {
smp_mb__after_atomic();
xprt_write_space(&sc->sc_xprt->rx_xprt);
}
xprt_write_space(&sc->sc_xprt->rx_xprt);
}
static void
@ -977,8 +972,6 @@ rpcrdma_mrs_create(struct rpcrdma_xprt *r_xprt)
r_xprt->rx_stats.mrs_allocated += count;
spin_unlock(&buf->rb_mrlock);
trace_xprtrdma_createmrs(r_xprt, count);
xprt_write_space(&r_xprt->rx_xprt);
}
static void
@ -990,6 +983,7 @@ rpcrdma_mr_refresh_worker(struct work_struct *work)
rx_buf);
rpcrdma_mrs_create(r_xprt);
xprt_write_space(&r_xprt->rx_xprt);
}
/**
@ -1025,7 +1019,6 @@ struct rpcrdma_req *rpcrdma_req_create(struct rpcrdma_xprt *r_xprt, size_t size,
if (!req->rl_recvbuf)
goto out4;
req->rl_buffer = buffer;
INIT_LIST_HEAD(&req->rl_registered);
spin_lock(&buffer->rb_lock);
list_add(&req->rl_all, &buffer->rb_allreqs);
@ -1042,9 +1035,9 @@ struct rpcrdma_req *rpcrdma_req_create(struct rpcrdma_xprt *r_xprt, size_t size,
return NULL;
}
static bool rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt, bool temp)
static struct rpcrdma_rep *rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt,
bool temp)
{
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
struct rpcrdma_rep *rep;
rep = kzalloc(sizeof(*rep), GFP_KERNEL);
@ -1055,27 +1048,22 @@ static bool rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt, bool temp)
DMA_FROM_DEVICE, GFP_KERNEL);
if (!rep->rr_rdmabuf)
goto out_free;
xdr_buf_init(&rep->rr_hdrbuf, rdmab_data(rep->rr_rdmabuf),
rdmab_length(rep->rr_rdmabuf));
rep->rr_cqe.done = rpcrdma_wc_receive;
rep->rr_rxprt = r_xprt;
INIT_WORK(&rep->rr_work, rpcrdma_deferred_completion);
rep->rr_recv_wr.next = NULL;
rep->rr_recv_wr.wr_cqe = &rep->rr_cqe;
rep->rr_recv_wr.sg_list = &rep->rr_rdmabuf->rg_iov;
rep->rr_recv_wr.num_sge = 1;
rep->rr_temp = temp;
spin_lock(&buf->rb_lock);
list_add(&rep->rr_list, &buf->rb_recv_bufs);
spin_unlock(&buf->rb_lock);
return true;
return rep;
out_free:
kfree(rep);
out:
return false;
return NULL;
}
/**
@ -1089,7 +1077,6 @@ int rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt)
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
int i, rc;
buf->rb_flags = 0;
buf->rb_max_requests = r_xprt->rx_ep.rep_max_requests;
buf->rb_bc_srv_max_requests = 0;
spin_lock_init(&buf->rb_mrlock);
@ -1122,15 +1109,6 @@ int rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt)
if (rc)
goto out;
buf->rb_completion_wq = alloc_workqueue("rpcrdma-%s",
WQ_MEM_RECLAIM | WQ_HIGHPRI,
0,
r_xprt->rx_xprt.address_strings[RPC_DISPLAY_ADDR]);
if (!buf->rb_completion_wq) {
rc = -ENOMEM;
goto out;
}
return 0;
out:
rpcrdma_buffer_destroy(buf);
@ -1204,11 +1182,6 @@ rpcrdma_buffer_destroy(struct rpcrdma_buffer *buf)
{
cancel_delayed_work_sync(&buf->rb_refresh_worker);
if (buf->rb_completion_wq) {
destroy_workqueue(buf->rb_completion_wq);
buf->rb_completion_wq = NULL;
}
rpcrdma_sendctxs_destroy(buf);
while (!list_empty(&buf->rb_recv_bufs)) {
@ -1325,13 +1298,12 @@ rpcrdma_buffer_get(struct rpcrdma_buffer *buffers)
/**
* rpcrdma_buffer_put - Put request/reply buffers back into pool
* @buffers: buffer pool
* @req: object to return
*
*/
void
rpcrdma_buffer_put(struct rpcrdma_req *req)
void rpcrdma_buffer_put(struct rpcrdma_buffer *buffers, struct rpcrdma_req *req)
{
struct rpcrdma_buffer *buffers = req->rl_buffer;
struct rpcrdma_rep *rep = req->rl_reply;
req->rl_reply = NULL;
@ -1484,8 +1456,7 @@ rpcrdma_ep_post(struct rpcrdma_ia *ia,
struct ib_send_wr *send_wr = &req->rl_sendctx->sc_wr;
int rc;
if (!ep->rep_send_count ||
test_bit(RPCRDMA_REQ_F_TX_RESOURCES, &req->rl_flags)) {
if (!ep->rep_send_count || kref_read(&req->rl_kref) > 1) {
send_wr->send_flags |= IB_SEND_SIGNALED;
ep->rep_send_count = ep->rep_send_batch;
} else {
@ -1505,11 +1476,13 @@ rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp)
{
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
struct rpcrdma_ep *ep = &r_xprt->rx_ep;
struct ib_recv_wr *wr, *bad_wr;
struct ib_recv_wr *i, *wr, *bad_wr;
struct rpcrdma_rep *rep;
int needed, count, rc;
rc = 0;
count = 0;
needed = buf->rb_credits + (buf->rb_bc_srv_max_requests << 1);
if (ep->rep_receive_count > needed)
goto out;
@ -1517,51 +1490,65 @@ rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp)
if (!temp)
needed += RPCRDMA_MAX_RECV_BATCH;
count = 0;
/* fast path: all needed reps can be found on the free list */
wr = NULL;
spin_lock(&buf->rb_lock);
while (needed) {
struct rpcrdma_regbuf *rb;
struct rpcrdma_rep *rep;
spin_lock(&buf->rb_lock);
rep = list_first_entry_or_null(&buf->rb_recv_bufs,
struct rpcrdma_rep, rr_list);
if (likely(rep))
list_del(&rep->rr_list);
spin_unlock(&buf->rb_lock);
if (!rep) {
if (!rpcrdma_rep_create(r_xprt, temp))
break;
continue;
}
rb = rep->rr_rdmabuf;
if (!rpcrdma_regbuf_dma_map(r_xprt, rb)) {
rpcrdma_recv_buffer_put(rep);
if (!rep)
break;
}
trace_xprtrdma_post_recv(rep->rr_recv_wr.wr_cqe);
list_del(&rep->rr_list);
rep->rr_recv_wr.next = wr;
wr = &rep->rr_recv_wr;
++count;
--needed;
}
if (!count)
spin_unlock(&buf->rb_lock);
while (needed) {
rep = rpcrdma_rep_create(r_xprt, temp);
if (!rep)
break;
rep->rr_recv_wr.next = wr;
wr = &rep->rr_recv_wr;
--needed;
}
if (!wr)
goto out;
for (i = wr; i; i = i->next) {
rep = container_of(i, struct rpcrdma_rep, rr_recv_wr);
if (!rpcrdma_regbuf_dma_map(r_xprt, rep->rr_rdmabuf))
goto release_wrs;
trace_xprtrdma_post_recv(rep->rr_recv_wr.wr_cqe);
++count;
}
rc = ib_post_recv(r_xprt->rx_ia.ri_id->qp, wr,
(const struct ib_recv_wr **)&bad_wr);
out:
trace_xprtrdma_post_recvs(r_xprt, count, rc);
if (rc) {
for (wr = bad_wr; wr; wr = wr->next) {
for (wr = bad_wr; wr;) {
struct rpcrdma_rep *rep;
rep = container_of(wr, struct rpcrdma_rep, rr_recv_wr);
wr = wr->next;
rpcrdma_recv_buffer_put(rep);
--count;
}
}
ep->rep_receive_count += count;
out:
trace_xprtrdma_post_recvs(r_xprt, count, rc);
return;
release_wrs:
for (i = wr; i;) {
rep = container_of(i, struct rpcrdma_rep, rr_recv_wr);
i = i->next;
rpcrdma_recv_buffer_put(rep);
}
}

45
net/sunrpc/xprtrdma/xprt_rdma.h
View File

@ -44,7 +44,8 @@
#include <linux/wait.h> /* wait_queue_head_t, etc */
#include <linux/spinlock.h> /* spinlock_t, etc */
#include <linux/atomic.h> /* atomic_t, etc */
#include <linux/atomic.h> /* atomic_t, etc */
#include <linux/kref.h> /* struct kref */
#include <linux/workqueue.h> /* struct work_struct */
#include <rdma/rdma_cm.h> /* RDMA connection api */
@ -202,10 +203,9 @@ struct rpcrdma_rep {
bool rr_temp;
struct rpcrdma_regbuf *rr_rdmabuf;
struct rpcrdma_xprt *rr_rxprt;
struct work_struct rr_work;
struct rpc_rqst *rr_rqst;
struct xdr_buf rr_hdrbuf;
struct xdr_stream rr_stream;
struct rpc_rqst *rr_rqst;
struct list_head rr_list;
struct ib_recv_wr rr_recv_wr;
};
@ -240,18 +240,12 @@ struct rpcrdma_sendctx {
* An external memory region is any buffer or page that is registered
* on the fly (ie, not pre-registered).
*/
enum rpcrdma_frwr_state {
FRWR_IS_INVALID, /* ready to be used */
FRWR_IS_VALID, /* in use */
FRWR_FLUSHED_FR, /* flushed FASTREG WR */
FRWR_FLUSHED_LI, /* flushed LOCALINV WR */
};
struct rpcrdma_req;
struct rpcrdma_frwr {
struct ib_mr *fr_mr;
struct ib_cqe fr_cqe;
enum rpcrdma_frwr_state fr_state;
struct completion fr_linv_done;
struct rpcrdma_req *fr_req;
union {
struct ib_reg_wr fr_regwr;
struct ib_send_wr fr_invwr;
@ -326,7 +320,6 @@ struct rpcrdma_buffer;
struct rpcrdma_req {
struct list_head rl_list;
struct rpc_rqst rl_slot;
struct rpcrdma_buffer *rl_buffer;
struct rpcrdma_rep *rl_reply;
struct xdr_stream rl_stream;
struct xdr_buf rl_hdrbuf;
@ -336,18 +329,12 @@ struct rpcrdma_req {
struct rpcrdma_regbuf *rl_recvbuf; /* rq_rcv_buf */
struct list_head rl_all;
unsigned long rl_flags;
struct kref rl_kref;
struct list_head rl_registered; /* registered segments */
struct rpcrdma_mr_seg rl_segments[RPCRDMA_MAX_SEGS];
};
/* rl_flags */
enum {
RPCRDMA_REQ_F_PENDING = 0,
RPCRDMA_REQ_F_TX_RESOURCES,
};
static inline struct rpcrdma_req *
rpcr_to_rdmar(const struct rpc_rqst *rqst)
{
@ -391,22 +378,15 @@ struct rpcrdma_buffer {
struct list_head rb_recv_bufs;
struct list_head rb_allreqs;
unsigned long rb_flags;
u32 rb_max_requests;
u32 rb_credits; /* most recent credit grant */
u32 rb_bc_srv_max_requests;
u32 rb_bc_max_requests;
struct workqueue_struct *rb_completion_wq;
struct delayed_work rb_refresh_worker;
};
/* rb_flags */
enum {
RPCRDMA_BUF_F_EMPTY_SCQ = 0,
};
/*
* Statistics for RPCRDMA
*/
@ -452,6 +432,7 @@ struct rpcrdma_xprt {
struct rpcrdma_ep rx_ep;
struct rpcrdma_buffer rx_buf;
struct delayed_work rx_connect_worker;
struct rpc_timeout rx_timeout;
struct rpcrdma_stats rx_stats;
};
@ -518,7 +499,8 @@ rpcrdma_mr_recycle(struct rpcrdma_mr *mr)
}
struct rpcrdma_req *rpcrdma_buffer_get(struct rpcrdma_buffer *);
void rpcrdma_buffer_put(struct rpcrdma_req *);
void rpcrdma_buffer_put(struct rpcrdma_buffer *buffers,
struct rpcrdma_req *req);
void rpcrdma_recv_buffer_put(struct rpcrdma_rep *);
bool rpcrdma_regbuf_realloc(struct rpcrdma_regbuf *rb, size_t size,
@ -564,6 +546,7 @@ rpcrdma_data_dir(bool writing)
/* Memory registration calls xprtrdma/frwr_ops.c
*/
bool frwr_is_supported(struct ib_device *device);
void frwr_reset(struct rpcrdma_req *req);
int frwr_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep);
int frwr_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr);
void frwr_release_mr(struct rpcrdma_mr *mr);
@ -574,8 +557,8 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt,
struct rpcrdma_mr **mr);
int frwr_send(struct rpcrdma_ia *ia, struct rpcrdma_req *req);
void frwr_reminv(struct rpcrdma_rep *rep, struct list_head *mrs);
void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt,
struct list_head *mrs);
void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req);
void frwr_unmap_async(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req);
/*
* RPC/RDMA protocol calls - xprtrdma/rpc_rdma.c
@ -598,9 +581,6 @@ int rpcrdma_marshal_req(struct rpcrdma_xprt *r_xprt, struct rpc_rqst *rqst);
void rpcrdma_set_max_header_sizes(struct rpcrdma_xprt *);
void rpcrdma_complete_rqst(struct rpcrdma_rep *rep);
void rpcrdma_reply_handler(struct rpcrdma_rep *rep);
void rpcrdma_release_rqst(struct rpcrdma_xprt *r_xprt,
struct rpcrdma_req *req);
void rpcrdma_deferred_completion(struct work_struct *work);
static inline void rpcrdma_set_xdrlen(struct xdr_buf *xdr, size_t len)
{
@ -625,6 +605,7 @@ void xprt_rdma_cleanup(void);
#if defined(CONFIG_SUNRPC_BACKCHANNEL)
int xprt_rdma_bc_setup(struct rpc_xprt *, unsigned int);
size_t xprt_rdma_bc_maxpayload(struct rpc_xprt *);
unsigned int xprt_rdma_bc_max_slots(struct rpc_xprt *);
int rpcrdma_bc_post_recv(struct rpcrdma_xprt *, unsigned int);
void rpcrdma_bc_receive_call(struct rpcrdma_xprt *, struct rpcrdma_rep *);
int xprt_rdma_bc_send_reply(struct rpc_rqst *rqst);

126
net/sunrpc/xprtsock.c
View File

@ -880,7 +880,7 @@ static int xs_nospace(struct rpc_rqst *req)
req->rq_slen);
/* Protect against races with write_space */
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
/* Don't race with disconnect */
if (xprt_connected(xprt)) {
@ -890,7 +890,7 @@ static int xs_nospace(struct rpc_rqst *req)
} else
ret = -ENOTCONN;
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
/* Race breaker in case memory is freed before above code is called */
if (ret == -EAGAIN) {
@ -909,6 +909,7 @@ static int xs_nospace(struct rpc_rqst *req)
static void
xs_stream_prepare_request(struct rpc_rqst *req)
{
xdr_free_bvec(&req->rq_rcv_buf);
req->rq_task->tk_status = xdr_alloc_bvec(&req->rq_rcv_buf, GFP_KERNEL);
}
@ -1211,6 +1212,15 @@ static void xs_sock_reset_state_flags(struct rpc_xprt *xprt)
struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
clear_bit(XPRT_SOCK_DATA_READY, &transport->sock_state);
clear_bit(XPRT_SOCK_WAKE_ERROR, &transport->sock_state);
clear_bit(XPRT_SOCK_WAKE_WRITE, &transport->sock_state);
clear_bit(XPRT_SOCK_WAKE_DISCONNECT, &transport->sock_state);
}
static void xs_run_error_worker(struct sock_xprt *transport, unsigned int nr)
{
set_bit(nr, &transport->sock_state);
queue_work(xprtiod_workqueue, &transport->error_worker);
}
static void xs_sock_reset_connection_flags(struct rpc_xprt *xprt)
@ -1231,6 +1241,7 @@ static void xs_sock_reset_connection_flags(struct rpc_xprt *xprt)
*/
static void xs_error_report(struct sock *sk)
{
struct sock_xprt *transport;
struct rpc_xprt *xprt;
int err;
@ -1238,13 +1249,14 @@ static void xs_error_report(struct sock *sk)
if (!(xprt = xprt_from_sock(sk)))
goto out;
transport = container_of(xprt, struct sock_xprt, xprt);
err = -sk->sk_err;
if (err == 0)
goto out;
dprintk("RPC: xs_error_report client %p, error=%d...\n",
xprt, -err);
trace_rpc_socket_error(xprt, sk->sk_socket, err);
xprt_wake_pending_tasks(xprt, err);
xs_run_error_worker(transport, XPRT_SOCK_WAKE_ERROR);
out:
read_unlock_bh(&sk->sk_callback_lock);
}
@ -1333,6 +1345,7 @@ static void xs_destroy(struct rpc_xprt *xprt)
cancel_delayed_work_sync(&transport->connect_worker);
xs_close(xprt);
cancel_work_sync(&transport->recv_worker);
cancel_work_sync(&transport->error_worker);
xs_xprt_free(xprt);
module_put(THIS_MODULE);
}
@ -1386,9 +1399,9 @@ static void xs_udp_data_read_skb(struct rpc_xprt *xprt,
}
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
xprt_adjust_cwnd(xprt, task, copied);
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
spin_lock(&xprt->queue_lock);
xprt_complete_rqst(task, copied);
__UDPX_INC_STATS(sk, UDP_MIB_INDATAGRAMS);
@ -1498,7 +1511,6 @@ static void xs_tcp_state_change(struct sock *sk)
trace_rpc_socket_state_change(xprt, sk->sk_socket);
switch (sk->sk_state) {
case TCP_ESTABLISHED:
spin_lock(&xprt->transport_lock);
if (!xprt_test_and_set_connected(xprt)) {
xprt->connect_cookie++;
clear_bit(XPRT_SOCK_CONNECTING, &transport->sock_state);
@ -1507,9 +1519,8 @@ static void xs_tcp_state_change(struct sock *sk)
xprt->stat.connect_count++;
xprt->stat.connect_time += (long)jiffies -
xprt->stat.connect_start;
xprt_wake_pending_tasks(xprt, -EAGAIN);
xs_run_error_worker(transport, XPRT_SOCK_WAKE_PENDING);
}
spin_unlock(&xprt->transport_lock);
break;
case TCP_FIN_WAIT1:
/* The client initiated a shutdown of the socket */
@ -1525,7 +1536,7 @@ static void xs_tcp_state_change(struct sock *sk)
/* The server initiated a shutdown of the socket */
xprt->connect_cookie++;
clear_bit(XPRT_CONNECTED, &xprt->state);
xs_tcp_force_close(xprt);
xs_run_error_worker(transport, XPRT_SOCK_WAKE_DISCONNECT);
/* fall through */
case TCP_CLOSING:
/*
@ -1547,7 +1558,7 @@ static void xs_tcp_state_change(struct sock *sk)
xprt_clear_connecting(xprt);
clear_bit(XPRT_CLOSING, &xprt->state);
/* Trigger the socket release */
xs_tcp_force_close(xprt);
xs_run_error_worker(transport, XPRT_SOCK_WAKE_DISCONNECT);
}
out:
read_unlock_bh(&sk->sk_callback_lock);
@ -1556,6 +1567,7 @@ static void xs_tcp_state_change(struct sock *sk)
static void xs_write_space(struct sock *sk)
{
struct socket_wq *wq;
struct sock_xprt *transport;
struct rpc_xprt *xprt;
if (!sk->sk_socket)
@ -1564,13 +1576,14 @@ static void xs_write_space(struct sock *sk)
if (unlikely(!(xprt = xprt_from_sock(sk))))
return;
transport = container_of(xprt, struct sock_xprt, xprt);
rcu_read_lock();
wq = rcu_dereference(sk->sk_wq);
if (!wq || test_and_clear_bit(SOCKWQ_ASYNC_NOSPACE, &wq->flags) == 0)
goto out;
if (xprt_write_space(xprt))
sk->sk_write_pending--;
xs_run_error_worker(transport, XPRT_SOCK_WAKE_WRITE);
sk->sk_write_pending--;
out:
rcu_read_unlock();
}
@ -1664,9 +1677,9 @@ static void xs_udp_set_buffer_size(struct rpc_xprt *xprt, size_t sndsize, size_t
*/
static void xs_udp_timer(struct rpc_xprt *xprt, struct rpc_task *task)
{
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
xprt_adjust_cwnd(xprt, task, -ETIMEDOUT);
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
}
static int xs_get_random_port(void)
@ -2201,13 +2214,13 @@ static void xs_tcp_set_socket_timeouts(struct rpc_xprt *xprt,
unsigned int opt_on = 1;
unsigned int timeo;
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
keepidle = DIV_ROUND_UP(xprt->timeout->to_initval, HZ);
keepcnt = xprt->timeout->to_retries + 1;
timeo = jiffies_to_msecs(xprt->timeout->to_initval) *
(xprt->timeout->to_retries + 1);
clear_bit(XPRT_SOCK_UPD_TIMEOUT, &transport->sock_state);
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
/* TCP Keepalive options */
kernel_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE,
@ -2232,7 +2245,7 @@ static void xs_tcp_set_connect_timeout(struct rpc_xprt *xprt,
struct rpc_timeout to;
unsigned long initval;
spin_lock_bh(&xprt->transport_lock);
spin_lock(&xprt->transport_lock);
if (reconnect_timeout < xprt->max_reconnect_timeout)
xprt->max_reconnect_timeout = reconnect_timeout;
if (connect_timeout < xprt->connect_timeout) {
@ -2249,7 +2262,7 @@ static void xs_tcp_set_connect_timeout(struct rpc_xprt *xprt,
xprt->connect_timeout = connect_timeout;
}
set_bit(XPRT_SOCK_UPD_TIMEOUT, &transport->sock_state);
spin_unlock_bh(&xprt->transport_lock);
spin_unlock(&xprt->transport_lock);
}
static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
@ -2402,25 +2415,6 @@ static void xs_tcp_setup_socket(struct work_struct *work)
xprt_wake_pending_tasks(xprt, status);
}
static unsigned long xs_reconnect_delay(const struct rpc_xprt *xprt)
{
unsigned long start, now = jiffies;
start = xprt->stat.connect_start + xprt->reestablish_timeout;
if (time_after(start, now))
return start - now;
return 0;
}
static void xs_reconnect_backoff(struct rpc_xprt *xprt)
{
xprt->reestablish_timeout <<= 1;
if (xprt->reestablish_timeout > xprt->max_reconnect_timeout)
xprt->reestablish_timeout = xprt->max_reconnect_timeout;
if (xprt->reestablish_timeout < XS_TCP_INIT_REEST_TO)
xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO;
}
/**
* xs_connect - connect a socket to a remote endpoint
* @xprt: pointer to transport structure
@ -2450,8 +2444,8 @@ static void xs_connect(struct rpc_xprt *xprt, struct rpc_task *task)
/* Start by resetting any existing state */
xs_reset_transport(transport);
delay = xs_reconnect_delay(xprt);
xs_reconnect_backoff(xprt);
delay = xprt_reconnect_delay(xprt);
xprt_reconnect_backoff(xprt, XS_TCP_INIT_REEST_TO);
} else
dprintk("RPC: xs_connect scheduled xprt %p\n", xprt);
@ -2461,6 +2455,56 @@ static void xs_connect(struct rpc_xprt *xprt, struct rpc_task *task)
delay);
}
static void xs_wake_disconnect(struct sock_xprt *transport)
{
if (test_and_clear_bit(XPRT_SOCK_WAKE_DISCONNECT, &transport->sock_state))
xs_tcp_force_close(&transport->xprt);
}
static void xs_wake_write(struct sock_xprt *transport)
{
if (test_and_clear_bit(XPRT_SOCK_WAKE_WRITE, &transport->sock_state))
xprt_write_space(&transport->xprt);
}
static void xs_wake_error(struct sock_xprt *transport)
{
int sockerr;
int sockerr_len = sizeof(sockerr);
if (!test_bit(XPRT_SOCK_WAKE_ERROR, &transport->sock_state))
return;
mutex_lock(&transport->recv_mutex);
if (transport->sock == NULL)
goto out;
if (!test_and_clear_bit(XPRT_SOCK_WAKE_ERROR, &transport->sock_state))
goto out;
if (kernel_getsockopt(transport->sock, SOL_SOCKET, SO_ERROR,
(char *)&sockerr, &sockerr_len) != 0)
goto out;
if (sockerr < 0)
xprt_wake_pending_tasks(&transport->xprt, sockerr);
out:
mutex_unlock(&transport->recv_mutex);
}
static void xs_wake_pending(struct sock_xprt *transport)
{
if (test_and_clear_bit(XPRT_SOCK_WAKE_PENDING, &transport->sock_state))
xprt_wake_pending_tasks(&transport->xprt, -EAGAIN);
}
static void xs_error_handle(struct work_struct *work)
{
struct sock_xprt *transport = container_of(work,
struct sock_xprt, error_worker);
xs_wake_disconnect(transport);
xs_wake_write(transport);
xs_wake_error(transport);
xs_wake_pending(transport);
}
/**
* xs_local_print_stats - display AF_LOCAL socket-specifc stats
* @xprt: rpc_xprt struct containing statistics
@ -2745,6 +2789,7 @@ static const struct rpc_xprt_ops xs_tcp_ops = {
#ifdef CONFIG_SUNRPC_BACKCHANNEL
.bc_setup = xprt_setup_bc,
.bc_maxpayload = xs_tcp_bc_maxpayload,
.bc_num_slots = xprt_bc_max_slots,
.bc_free_rqst = xprt_free_bc_rqst,
.bc_destroy = xprt_destroy_bc,
#endif
@ -2873,6 +2918,7 @@ static struct rpc_xprt *xs_setup_local(struct xprt_create *args)
xprt->timeout = &xs_local_default_timeout;
INIT_WORK(&transport->recv_worker, xs_stream_data_receive_workfn);
INIT_WORK(&transport->error_worker, xs_error_handle);
INIT_DELAYED_WORK(&transport->connect_worker, xs_dummy_setup_socket);
switch (sun->sun_family) {
@ -2943,6 +2989,7 @@ static struct rpc_xprt *xs_setup_udp(struct xprt_create *args)
xprt->timeout = &xs_udp_default_timeout;
INIT_WORK(&transport->recv_worker, xs_udp_data_receive_workfn);
INIT_WORK(&transport->error_worker, xs_error_handle);
INIT_DELAYED_WORK(&transport->connect_worker, xs_udp_setup_socket);
switch (addr->sa_family) {
@ -3024,6 +3071,7 @@ static struct rpc_xprt *xs_setup_tcp(struct xprt_create *args)
(xprt->timeout->to_retries + 1);
INIT_WORK(&transport->recv_worker, xs_stream_data_receive_workfn);
INIT_WORK(&transport->error_worker, xs_error_handle);
INIT_DELAYED_WORK(&transport->connect_worker, xs_tcp_setup_socket);
switch (addr->sa_family) {