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NFS client updates for Linux 5.14

Browse Source 
Highlights include:
 
 Stable fixes:
 - Two sunrpc fixes for deadlocks involving privileged rpc_wait_queues
 
 Bugfixes
 - SUNRPC: Avoid a KASAN slab-out-of-bounds bug in xdr_set_page_base()
 - SUNRPC: prevent port reuse on transports which don't request it.
 - NFSv3: Fix memory leak in posix_acl_create()
 - NFS: Various fixes to attribute revalidation timeouts
 - NFSv4: Fix handling of non-atomic change attribute updates
 - NFSv4: If a server is down, don't cause mounts to other servers to
   hang as well
 - pNFS: Fix an Oops in pnfs_mark_request_commit() when doing O_DIRECT
 - NFS: Fix mount failures due to incorrect setting of the has_sec_mnt_opts
   filesystem flag
  - NFS: Ensure nfs_readpage returns promptly when an internal error occurs
  - NFS: Fix fscache read from NFS after cache error
  - pNFS: Various bugfixes around the LAYOUTGET operation
 
 Features
 - Multiple patches to add support for fcntl() leases over NFSv4.
 - A sysfs interface to display more information about the various
   transport connections used by the RPC client
 - A sysfs interface to allow a suitably privileged user to offline a
   transport that may no longer point to a valid server
 - A sysfs interface to allow a suitably privileged user to change the
   server IP address used by the RPC client
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Merge tag 'nfs-for-5.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

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

  Features:

   - Multiple patches to add support for fcntl() leases over NFSv4.

   - A sysfs interface to display more information about the various
     transport connections used by the RPC client

   - A sysfs interface to allow a suitably privileged user to offline a
     transport that may no longer point to a valid server

   - A sysfs interface to allow a suitably privileged user to change the
     server IP address used by the RPC client

  Stable fixes:

   - Two sunrpc fixes for deadlocks involving privileged rpc_wait_queues

  Bugfixes:

   - SUNRPC: Avoid a KASAN slab-out-of-bounds bug in xdr_set_page_base()

   - SUNRPC: prevent port reuse on transports which don't request it.

   - NFSv3: Fix memory leak in posix_acl_create()

   - NFS: Various fixes to attribute revalidation timeouts

   - NFSv4: Fix handling of non-atomic change attribute updates

   - NFSv4: If a server is down, don't cause mounts to other servers to
     hang as well

   - pNFS: Fix an Oops in pnfs_mark_request_commit() when doing O_DIRECT

   - NFS: Fix mount failures due to incorrect setting of the
     has_sec_mnt_opts filesystem flag

   - NFS: Ensure nfs_readpage returns promptly when an internal error
     occurs

   - NFS: Fix fscache read from NFS after cache error

   - pNFS: Various bugfixes around the LAYOUTGET operation"

* tag 'nfs-for-5.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (46 commits)
  NFSv4/pNFS: Return an error if _nfs4_pnfs_v3_ds_connect can't load NFSv3
  NFSv4/pNFS: Don't call _nfs4_pnfs_v3_ds_connect multiple times
  NFSv4/pnfs: Clean up layout get on open
  NFSv4/pnfs: Fix layoutget behaviour after invalidation
  NFSv4/pnfs: Fix the layout barrier update
  NFS: Fix fscache read from NFS after cache error
  NFS: Ensure nfs_readpage returns promptly when internal error occurs
  sunrpc: remove an offlined xprt using sysfs
  sunrpc: provide showing transport's state info in the sysfs directory
  sunrpc: display xprt's queuelen of assigned tasks via sysfs
  sunrpc: provide multipath info in the sysfs directory
  NFSv4.1 identify and mark RPC tasks that can move between transports
  sunrpc: provide transport info in the sysfs directory
  SUNRPC: take a xprt offline using sysfs
  sunrpc: add dst_attr attributes to the sysfs xprt directory
  SUNRPC for TCP display xprt's source port in sysfs xprt_info
  SUNRPC query transport's source port
  SUNRPC display xprt's main value in sysfs's xprt_info
  SUNRPC mark the first transport
  sunrpc: add add sysfs directory per xprt under each xprt_switch
  ...
This commit is contained in:
Linus Torvalds 2021-07-09 09:43:57 -07:00
commit 96890bc2ea
34 changed files with 1142 additions and 236 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

94
fs/nfs/delegation.c
View File

@ -75,6 +75,13 @@ void nfs_mark_delegation_referenced(struct nfs_delegation *delegation)
set_bit(NFS_DELEGATION_REFERENCED, &delegation->flags);
}
static void nfs_mark_return_delegation(struct nfs_server *server,
struct nfs_delegation *delegation)
{
set_bit(NFS_DELEGATION_RETURN, &delegation->flags);
set_bit(NFS4CLNT_DELEGRETURN, &server->nfs_client->cl_state);
}
static bool
nfs4_is_valid_delegation(const struct nfs_delegation *delegation,
fmode_t flags)
@ -293,6 +300,7 @@ nfs_start_delegation_return_locked(struct nfs_inode *nfsi)
goto out;
spin_lock(&delegation->lock);
if (!test_and_set_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) {
clear_bit(NFS_DELEGATION_RETURN_DELAYED, &delegation->flags);
/* Refcount matched in nfs_end_delegation_return() */
ret = nfs_get_delegation(delegation);
}
@ -314,16 +322,17 @@ nfs_start_delegation_return(struct nfs_inode *nfsi)
return delegation;
}
static void
nfs_abort_delegation_return(struct nfs_delegation *delegation,
struct nfs_client *clp)
static void nfs_abort_delegation_return(struct nfs_delegation *delegation,
struct nfs_client *clp, int err)
{
spin_lock(&delegation->lock);
clear_bit(NFS_DELEGATION_RETURNING, &delegation->flags);
set_bit(NFS_DELEGATION_RETURN, &delegation->flags);
if (err == -EAGAIN) {
set_bit(NFS_DELEGATION_RETURN_DELAYED, &delegation->flags);
set_bit(NFS4CLNT_DELEGRETURN_DELAYED, &clp->cl_state);
}
spin_unlock(&delegation->lock);
set_bit(NFS4CLNT_DELEGRETURN, &clp->cl_state);
}
static struct nfs_delegation *
@ -521,11 +530,18 @@ out:
static int nfs_end_delegation_return(struct inode *inode, struct nfs_delegation *delegation, int issync)
{
struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
unsigned int mode = O_WRONLY | O_RDWR;
int err = 0;
if (delegation == NULL)
return 0;
do {
if (!issync)
mode |= O_NONBLOCK;
/* Recall of any remaining application leases */
err = break_lease(inode, mode);
while (err == 0) {
if (test_bit(NFS_DELEGATION_REVOKED, &delegation->flags))
break;
err = nfs_delegation_claim_opens(inode, &delegation->stateid,
@ -536,10 +552,10 @@ static int nfs_end_delegation_return(struct inode *inode, struct nfs_delegation
* Guard against state recovery
*/
err = nfs4_wait_clnt_recover(clp);
} while (err == 0);
}
if (err) {
nfs_abort_delegation_return(delegation, clp);
nfs_abort_delegation_return(delegation, clp, err);
goto out;
}
@ -568,6 +584,7 @@ static bool nfs_delegation_need_return(struct nfs_delegation *delegation)
if (ret)
clear_bit(NFS_DELEGATION_RETURN_IF_CLOSED, &delegation->flags);
if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags) ||
test_bit(NFS_DELEGATION_RETURN_DELAYED, &delegation->flags) ||
test_bit(NFS_DELEGATION_REVOKED, &delegation->flags))
ret = false;
@ -647,6 +664,38 @@ out:
return err;
}
static bool nfs_server_clear_delayed_delegations(struct nfs_server *server)
{
struct nfs_delegation *d;
bool ret = false;
list_for_each_entry_rcu (d, &server->delegations, super_list) {
if (!test_bit(NFS_DELEGATION_RETURN_DELAYED, &d->flags))
continue;
nfs_mark_return_delegation(server, d);
clear_bit(NFS_DELEGATION_RETURN_DELAYED, &d->flags);
ret = true;
}
return ret;
}
static bool nfs_client_clear_delayed_delegations(struct nfs_client *clp)
{
struct nfs_server *server;
bool ret = false;
if (!test_and_clear_bit(NFS4CLNT_DELEGRETURN_DELAYED, &clp->cl_state))
goto out;
rcu_read_lock();
list_for_each_entry_rcu (server, &clp->cl_superblocks, client_link) {
if (nfs_server_clear_delayed_delegations(server))
ret = true;
}
rcu_read_unlock();
out:
return ret;
}
/**
* nfs_client_return_marked_delegations - return previously marked delegations
* @clp: nfs_client to process
@ -659,8 +708,14 @@ out:
*/
int nfs_client_return_marked_delegations(struct nfs_client *clp)
{
return nfs_client_for_each_server(clp,
nfs_server_return_marked_delegations, NULL);
int err = nfs_client_for_each_server(
clp, nfs_server_return_marked_delegations, NULL);
if (err)
return err;
/* If a return was delayed, sleep to prevent hard looping */
if (nfs_client_clear_delayed_delegations(clp))
ssleep(1);
return 0;
}
/**
@ -698,13 +753,14 @@ int nfs4_inode_return_delegation(struct inode *inode)
{
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_delegation *delegation;
int err = 0;
nfs_wb_all(inode);
delegation = nfs_start_delegation_return(nfsi);
/* Synchronous recall of any application leases */
break_lease(inode, O_WRONLY | O_RDWR);
nfs_wb_all(inode);
if (delegation != NULL)
err = nfs_end_delegation_return(inode, delegation, 1);
return err;
return nfs_end_delegation_return(inode, delegation, 1);
return 0;
}
/**
@ -775,13 +831,6 @@ static void nfs_mark_return_if_closed_delegation(struct nfs_server *server,
set_bit(NFS4CLNT_DELEGRETURN, &server->nfs_client->cl_state);
}
static void nfs_mark_return_delegation(struct nfs_server *server,
struct nfs_delegation *delegation)
{
set_bit(NFS_DELEGATION_RETURN, &delegation->flags);
set_bit(NFS4CLNT_DELEGRETURN, &server->nfs_client->cl_state);
}
static bool nfs_server_mark_return_all_delegations(struct nfs_server *server)
{
struct nfs_delegation *delegation;
@ -1010,6 +1059,9 @@ int nfs_async_inode_return_delegation(struct inode *inode,
nfs_mark_return_delegation(server, delegation);
rcu_read_unlock();
/* If there are any application leases or delegations, recall them */
break_lease(inode, O_WRONLY | O_RDWR | O_NONBLOCK);
nfs_delegation_run_state_manager(clp);
return 0;
out_enoent:

1
fs/nfs/delegation.h
View File

@ -36,6 +36,7 @@ enum {
NFS_DELEGATION_REVOKED,
NFS_DELEGATION_TEST_EXPIRED,
NFS_DELEGATION_INODE_FREEING,
NFS_DELEGATION_RETURN_DELAYED,
};
int nfs_inode_set_delegation(struct inode *inode, const struct cred *cred,

17
fs/nfs/direct.c
View File

@ -700,8 +700,8 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr)
{
struct nfs_direct_req *dreq = hdr->dreq;
struct nfs_commit_info cinfo;
bool request_commit = false;
struct nfs_page *req = nfs_list_entry(hdr->pages.next);
int flags = NFS_ODIRECT_DONE;
nfs_init_cinfo_from_dreq(&cinfo, dreq);
@ -713,15 +713,9 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr)
nfs_direct_count_bytes(dreq, hdr);
if (hdr->good_bytes != 0 && nfs_write_need_commit(hdr)) {
switch (dreq->flags) {
case 0:
if (!dreq->flags)
dreq->flags = NFS_ODIRECT_DO_COMMIT;
request_commit = true;
break;
case NFS_ODIRECT_RESCHED_WRITES:
case NFS_ODIRECT_DO_COMMIT:
request_commit = true;
}
flags = dreq->flags;
}
spin_unlock(&dreq->lock);
@ -729,12 +723,15 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr)
req = nfs_list_entry(hdr->pages.next);
nfs_list_remove_request(req);
if (request_commit) {
if (flags == NFS_ODIRECT_DO_COMMIT) {
kref_get(&req->wb_kref);
memcpy(&req->wb_verf, &hdr->verf.verifier,
sizeof(req->wb_verf));
nfs_mark_request_commit(req, hdr->lseg, &cinfo,
hdr->ds_commit_idx);
} else if (flags == NFS_ODIRECT_RESCHED_WRITES) {
kref_get(&req->wb_kref);
nfs_mark_request_commit(req, NULL, &cinfo, 0);
}
nfs_unlock_and_release_request(req);
}

18
fs/nfs/fscache.c
View File

@ -385,12 +385,15 @@ static void nfs_readpage_from_fscache_complete(struct page *page,
"NFS: readpage_from_fscache_complete (0x%p/0x%p/%d)\n",
page, context, error);
/* if the read completes with an error, we just unlock the page and let
* the VM reissue the readpage */
if (!error) {
/*
* If the read completes with an error, mark the page with PG_checked,
* unlock the page, and let the VM reissue the readpage.
*/
if (!error)
SetPageUptodate(page);
unlock_page(page);
}
else
SetPageChecked(page);
unlock_page(page);
}
/*
@ -405,6 +408,11 @@ int __nfs_readpage_from_fscache(struct nfs_open_context *ctx,
"NFS: readpage_from_fscache(fsc:%p/p:%p(i:%lx f:%lx)/0x%p)\n",
nfs_i_fscache(inode), page, page->index, page->flags, inode);
if (PageChecked(page)) {
ClearPageChecked(page);
return 1;
}
ret = fscache_read_or_alloc_page(nfs_i_fscache(inode),
page,
nfs_readpage_from_fscache_complete,

12
fs/nfs/getroot.c
View File

@ -67,7 +67,7 @@ static int nfs_superblock_set_dummy_root(struct super_block *sb, struct inode *i
int nfs_get_root(struct super_block *s, struct fs_context *fc)
{
struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct nfs_server *server = NFS_SB(s);
struct nfs_server *server = NFS_SB(s), *clone_server;
struct nfs_fsinfo fsinfo;
struct dentry *root;
struct inode *inode;
@ -127,7 +127,7 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc)
}
spin_unlock(&root->d_lock);
fc->root = root;
if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL)
if (server->caps & NFS_CAP_SECURITY_LABEL)
kflags |= SECURITY_LSM_NATIVE_LABELS;
if (ctx->clone_data.sb) {
if (d_inode(fc->root)->i_fop != &nfs_dir_operations) {
@ -137,15 +137,19 @@ int nfs_get_root(struct super_block *s, struct fs_context *fc)
/* clone lsm security options from the parent to the new sb */
error = security_sb_clone_mnt_opts(ctx->clone_data.sb,
s, kflags, &kflags_out);
if (error)
goto error_splat_root;
clone_server = NFS_SB(ctx->clone_data.sb);
server->has_sec_mnt_opts = clone_server->has_sec_mnt_opts;
} else {
error = security_sb_set_mnt_opts(s, fc->security,
kflags, &kflags_out);
}
if (error)
goto error_splat_root;
if (NFS_SB(s)->caps & NFS_CAP_SECURITY_LABEL &&
if (server->caps & NFS_CAP_SECURITY_LABEL &&
!(kflags_out & SECURITY_LSM_NATIVE_LABELS))
NFS_SB(s)->caps &= ~NFS_CAP_SECURITY_LABEL;
server->caps &= ~NFS_CAP_SECURITY_LABEL;
nfs_setsecurity(inode, fsinfo.fattr, fsinfo.fattr->label);
error = 0;

61
fs/nfs/inode.c
View File

@ -1101,6 +1101,7 @@ EXPORT_SYMBOL_GPL(nfs_inode_attach_open_context);
void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx)
{
filp->private_data = get_nfs_open_context(ctx);
set_bit(NFS_CONTEXT_FILE_OPEN, &ctx->flags);
if (list_empty(&ctx->list))
nfs_inode_attach_open_context(ctx);
}
@ -1120,6 +1121,8 @@ struct nfs_open_context *nfs_find_open_context(struct inode *inode, const struct
continue;
if ((pos->mode & (FMODE_READ|FMODE_WRITE)) != mode)
continue;
if (!test_bit(NFS_CONTEXT_FILE_OPEN, &pos->flags))
continue;
ctx = get_nfs_open_context(pos);
if (ctx)
break;
@ -1135,6 +1138,7 @@ void nfs_file_clear_open_context(struct file *filp)
if (ctx) {
struct inode *inode = d_inode(ctx->dentry);
clear_bit(NFS_CONTEXT_FILE_OPEN, &ctx->flags);
/*
* We fatal error on write before. Try to writeback
* every page again.
@ -2055,35 +2059,33 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
| NFS_INO_INVALID_OTHER;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
attr_changed = true;
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;
}
} else {
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_CHANGE;
cache_revalidated = false;
if (!have_delegation ||
(nfsi->cache_validity & NFS_INO_INVALID_CHANGE) != 0)
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_MTIME) {
if (fattr->valid & NFS_ATTR_FATTR_MTIME)
inode->i_mtime = fattr->mtime;
} else if (fattr_supported & NFS_ATTR_FATTR_MTIME) {
else if (fattr_supported & NFS_ATTR_FATTR_MTIME)
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_MTIME;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_CTIME) {
if (fattr->valid & NFS_ATTR_FATTR_CTIME)
inode->i_ctime = fattr->ctime;
} else if (fattr_supported & NFS_ATTR_FATTR_CTIME) {
else if (fattr_supported & NFS_ATTR_FATTR_CTIME)
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_CTIME;
cache_revalidated = false;
}
/* Check if our cached file size is stale */
if (fattr->valid & NFS_ATTR_FATTR_SIZE) {
@ -2096,7 +2098,6 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
i_size_write(inode, new_isize);
if (!have_writers)
invalid |= NFS_INO_INVALID_DATA;
attr_changed = true;
}
dprintk("NFS: isize change on server for file %s/%ld "
"(%Ld to %Ld)\n",
@ -2111,19 +2112,15 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
fattr->du.nfs3.used = 0;
fattr->valid |= NFS_ATTR_FATTR_SPACE_USED;
}
} else {
} else
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_SIZE;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_ATIME)
inode->i_atime = fattr->atime;
else if (fattr_supported & NFS_ATTR_FATTR_ATIME) {
else if (fattr_supported & NFS_ATTR_FATTR_ATIME)
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_ATIME;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_MODE) {
if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)) {
@ -2132,71 +2129,55 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
inode->i_mode = newmode;
invalid |= NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL;
attr_changed = true;
}
} else if (fattr_supported & NFS_ATTR_FATTR_MODE) {
} else if (fattr_supported & NFS_ATTR_FATTR_MODE)
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_MODE;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_OWNER) {
if (!uid_eq(inode->i_uid, fattr->uid)) {
invalid |= NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL;
inode->i_uid = fattr->uid;
attr_changed = true;
}
} else if (fattr_supported & NFS_ATTR_FATTR_OWNER) {
} else if (fattr_supported & NFS_ATTR_FATTR_OWNER)
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_OTHER;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_GROUP) {
if (!gid_eq(inode->i_gid, fattr->gid)) {
invalid |= NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL;
inode->i_gid = fattr->gid;
attr_changed = true;
}
} else if (fattr_supported & NFS_ATTR_FATTR_GROUP) {
} else if (fattr_supported & NFS_ATTR_FATTR_GROUP)
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_OTHER;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_NLINK) {
if (inode->i_nlink != fattr->nlink) {
if (S_ISDIR(inode->i_mode))
invalid |= NFS_INO_INVALID_DATA;
set_nlink(inode, fattr->nlink);
attr_changed = true;
}
} else if (fattr_supported & NFS_ATTR_FATTR_NLINK) {
} else if (fattr_supported & NFS_ATTR_FATTR_NLINK)
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_NLINK;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_SPACE_USED) {
/*
* report the blocks in 512byte units
*/
inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
} else if (fattr_supported & NFS_ATTR_FATTR_SPACE_USED) {
} else if (fattr_supported & NFS_ATTR_FATTR_SPACE_USED)
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_BLOCKS;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED) {
if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
inode->i_blocks = fattr->du.nfs2.blocks;
} else if (fattr_supported & NFS_ATTR_FATTR_BLOCKS_USED) {
else if (fattr_supported & NFS_ATTR_FATTR_BLOCKS_USED)
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_BLOCKS;
cache_revalidated = false;
}
/* Update attrtimeo value if we're out of the unstable period */
if (attr_changed) {

4
fs/nfs/nfs3proc.c
View File

@ -385,7 +385,7 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
break;
case NFS3_CREATE_UNCHECKED:
goto out;
goto out_release_acls;
}
nfs_fattr_init(data->res.dir_attr);
nfs_fattr_init(data->res.fattr);
@ -751,7 +751,7 @@ nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
break;
default:
status = -EINVAL;
goto out;
goto out_release_acls;
}
d_alias = nfs3_do_create(dir, dentry, data);

4
fs/nfs/nfs4_fs.h
View File

@ -45,6 +45,7 @@ enum nfs4_client_state {
NFS4CLNT_RECALL_RUNNING,
NFS4CLNT_RECALL_ANY_LAYOUT_READ,
NFS4CLNT_RECALL_ANY_LAYOUT_RW,
NFS4CLNT_DELEGRETURN_DELAYED,
};
#define NFS4_RENEW_TIMEOUT 0x01
@ -322,7 +323,8 @@ extern int update_open_stateid(struct nfs4_state *state,
const nfs4_stateid *open_stateid,
const nfs4_stateid *deleg_stateid,
fmode_t fmode);
extern int nfs4_proc_setlease(struct file *file, long arg,
struct file_lock **lease, void **priv);
extern int nfs4_proc_get_lease_time(struct nfs_client *clp,
struct nfs_fsinfo *fsinfo);
extern void nfs4_update_changeattr(struct inode *dir,

82
fs/nfs/nfs4client.c
View File

@ -197,8 +197,11 @@ void nfs40_shutdown_client(struct nfs_client *clp)
struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *cl_init)
{
int err;
char buf[INET6_ADDRSTRLEN + 1];
const char *ip_addr = cl_init->ip_addr;
struct nfs_client *clp = nfs_alloc_client(cl_init);
int err;
if (IS_ERR(clp))
return clp;
@ -222,6 +225,44 @@ struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *cl_init)
init_waitqueue_head(&clp->cl_lock_waitq);
#endif
INIT_LIST_HEAD(&clp->pending_cb_stateids);
if (cl_init->minorversion != 0)
__set_bit(NFS_CS_INFINITE_SLOTS, &clp->cl_flags);
__set_bit(NFS_CS_DISCRTRY, &clp->cl_flags);
__set_bit(NFS_CS_NO_RETRANS_TIMEOUT, &clp->cl_flags);
/*
* Set up the connection to the server before we add add to the
* global list.
*/
err = nfs_create_rpc_client(clp, cl_init, RPC_AUTH_GSS_KRB5I);
if (err == -EINVAL)
err = nfs_create_rpc_client(clp, cl_init, RPC_AUTH_UNIX);
if (err < 0)
goto error;
/* If no clientaddr= option was specified, find a usable cb address */
if (ip_addr == NULL) {
struct sockaddr_storage cb_addr;
struct sockaddr *sap = (struct sockaddr *)&cb_addr;
err = rpc_localaddr(clp->cl_rpcclient, sap, sizeof(cb_addr));
if (err < 0)
goto error;
err = rpc_ntop(sap, buf, sizeof(buf));
if (err < 0)
goto error;
ip_addr = (const char *)buf;
}
strlcpy(clp->cl_ipaddr, ip_addr, sizeof(clp->cl_ipaddr));
err = nfs_idmap_new(clp);
if (err < 0) {
dprintk("%s: failed to create idmapper. Error = %d\n",
__func__, err);
goto error;
}
__set_bit(NFS_CS_IDMAP, &clp->cl_res_state);
return clp;
error:
@ -372,8 +413,6 @@ static int nfs4_init_client_minor_version(struct nfs_client *clp)
struct nfs_client *nfs4_init_client(struct nfs_client *clp,
const struct nfs_client_initdata *cl_init)
{
char buf[INET6_ADDRSTRLEN + 1];
const char *ip_addr = cl_init->ip_addr;
struct nfs_client *old;
int error;
@ -381,43 +420,6 @@ struct nfs_client *nfs4_init_client(struct nfs_client *clp,
/* the client is initialised already */
return clp;
/* Check NFS protocol revision and initialize RPC op vector */
clp->rpc_ops = &nfs_v4_clientops;
if (clp->cl_minorversion != 0)
__set_bit(NFS_CS_INFINITE_SLOTS, &clp->cl_flags);
__set_bit(NFS_CS_DISCRTRY, &clp->cl_flags);
__set_bit(NFS_CS_NO_RETRANS_TIMEOUT, &clp->cl_flags);
error = nfs_create_rpc_client(clp, cl_init, RPC_AUTH_GSS_KRB5I);
if (error == -EINVAL)
error = nfs_create_rpc_client(clp, cl_init, RPC_AUTH_UNIX);
if (error < 0)
goto error;
/* If no clientaddr= option was specified, find a usable cb address */
if (ip_addr == NULL) {
struct sockaddr_storage cb_addr;
struct sockaddr *sap = (struct sockaddr *)&cb_addr;
error = rpc_localaddr(clp->cl_rpcclient, sap, sizeof(cb_addr));
if (error < 0)
goto error;
error = rpc_ntop(sap, buf, sizeof(buf));
if (error < 0)
goto error;
ip_addr = (const char *)buf;
}
strlcpy(clp->cl_ipaddr, ip_addr, sizeof(clp->cl_ipaddr));
error = nfs_idmap_new(clp);
if (error < 0) {
dprintk("%s: failed to create idmapper. Error = %d\n",
__func__, error);
goto error;
}
__set_bit(NFS_CS_IDMAP, &clp->cl_res_state);
error = nfs4_init_client_minor_version(clp);
if (error < 0)
goto error;

8
fs/nfs/nfs4file.c
View File

@ -435,6 +435,12 @@ void nfs42_ssc_unregister_ops(void)
}
#endif /* CONFIG_NFS_V4_2 */
static int nfs4_setlease(struct file *file, long arg, struct file_lock **lease,
void **priv)
{
return nfs4_proc_setlease(file, arg, lease, priv);
}
const struct file_operations nfs4_file_operations = {
.read_iter = nfs_file_read,
.write_iter = nfs_file_write,
@ -448,7 +454,7 @@ const struct file_operations nfs4_file_operations = {
.splice_read = generic_file_splice_read,
.splice_write = iter_file_splice_write,
.check_flags = nfs_check_flags,
.setlease = simple_nosetlease,
.setlease = nfs4_setlease,
#ifdef CONFIG_NFS_V4_2
.copy_file_range = nfs4_copy_file_range,
.llseek = nfs4_file_llseek,

118
fs/nfs/nfs4proc.c
View File

@ -1155,7 +1155,11 @@ static int nfs4_call_sync_sequence(struct rpc_clnt *clnt,
struct nfs4_sequence_args *args,
struct nfs4_sequence_res *res)
{
return nfs4_do_call_sync(clnt, server, msg, args, res, 0);
unsigned short task_flags = 0;
if (server->nfs_client->cl_minorversion)
task_flags = RPC_TASK_MOVEABLE;
return nfs4_do_call_sync(clnt, server, msg, args, res, task_flags);
}
@ -1205,12 +1209,12 @@ nfs4_update_changeattr_locked(struct inode *inode,
u64 change_attr = inode_peek_iversion_raw(inode);
cache_validity |= NFS_INO_INVALID_CTIME | NFS_INO_INVALID_MTIME;
if (S_ISDIR(inode->i_mode))
cache_validity |= NFS_INO_INVALID_DATA;
switch (NFS_SERVER(inode)->change_attr_type) {
case NFS4_CHANGE_TYPE_IS_UNDEFINED:
break;
case NFS4_CHANGE_TYPE_IS_TIME_METADATA:
if ((s64)(change_attr - cinfo->after) > 0)
if (cinfo->after == change_attr)
goto out;
break;
default:
@ -1218,24 +1222,21 @@ nfs4_update_changeattr_locked(struct inode *inode,
goto out;
}
if (cinfo->atomic && cinfo->before == change_attr) {
nfsi->attrtimeo_timestamp = jiffies;
} else {
if (S_ISDIR(inode->i_mode)) {
cache_validity |= NFS_INO_INVALID_DATA;
nfs_force_lookup_revalidate(inode);
} else {
if (!NFS_PROTO(inode)->have_delegation(inode,
FMODE_READ))
cache_validity |= NFS_INO_REVAL_PAGECACHE;
}
if (cinfo->before != change_attr)
cache_validity |= NFS_INO_INVALID_ACCESS |
NFS_INO_INVALID_ACL |
NFS_INO_INVALID_XATTR;
}
inode_set_iversion_raw(inode, cinfo->after);
if (!cinfo->atomic || cinfo->before != change_attr) {
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
if (!NFS_PROTO(inode)->have_delegation(inode, FMODE_READ))
cache_validity |=
NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL |
NFS_INO_INVALID_SIZE | NFS_INO_INVALID_OTHER |
NFS_INO_INVALID_BLOCKS | NFS_INO_INVALID_NLINK |
NFS_INO_INVALID_MODE | NFS_INO_INVALID_XATTR |
NFS_INO_REVAL_PAGECACHE;
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
}
nfsi->attrtimeo_timestamp = jiffies;
nfsi->read_cache_jiffies = timestamp;
nfsi->attr_gencount = nfs_inc_attr_generation_counter();
nfsi->cache_validity &= ~NFS_INO_INVALID_CHANGE;
@ -2569,6 +2570,9 @@ static int nfs4_run_open_task(struct nfs4_opendata *data,
};
int status;
if (server->nfs_client->cl_minorversion)
task_setup_data.flags |= RPC_TASK_MOVEABLE;
kref_get(&data->kref);
data->rpc_done = false;
data->rpc_status = 0;
@ -3749,6 +3753,9 @@ int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait)
};
int status = -ENOMEM;
if (server->nfs_client->cl_minorversion)
task_setup_data.flags |= RPC_TASK_MOVEABLE;
nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_CLEANUP,
&task_setup_data.rpc_client, &msg);
@ -4188,6 +4195,9 @@ static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
};
unsigned short task_flags = 0;
if (nfs4_has_session(server->nfs_client))
task_flags = RPC_TASK_MOVEABLE;
/* Is this is an attribute revalidation, subject to softreval? */
if (inode && (server->flags & NFS_MOUNT_SOFTREVAL))
task_flags |= RPC_TASK_TIMEOUT;
@ -4307,6 +4317,9 @@ static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir,
};
unsigned short task_flags = 0;
if (server->nfs_client->cl_minorversion)
task_flags = RPC_TASK_MOVEABLE;
/* Is this is an attribute revalidation, subject to softreval? */
if (nfs_lookup_is_soft_revalidate(dentry))
task_flags |= RPC_TASK_TIMEOUT;
@ -6538,7 +6551,7 @@ static int _nfs4_proc_delegreturn(struct inode *inode, const struct cred *cred,
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs4_delegreturn_ops,
.flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT,
.flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT | RPC_TASK_MOVEABLE,
};
int status = 0;
@ -6856,6 +6869,11 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
.workqueue = nfsiod_workqueue,
.flags = RPC_TASK_ASYNC,
};
struct nfs_client *client =
NFS_SERVER(lsp->ls_state->inode)->nfs_client;
if (client->cl_minorversion)
task_setup_data.flags |= RPC_TASK_MOVEABLE;
nfs4_state_protect(NFS_SERVER(lsp->ls_state->inode)->nfs_client,
NFS_SP4_MACH_CRED_CLEANUP, &task_setup_data.rpc_client, &msg);
@ -7130,6 +7148,10 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
.flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF,
};
int ret;
struct nfs_client *client = NFS_SERVER(state->inode)->nfs_client;
if (client->cl_minorversion)
task_setup_data.flags |= RPC_TASK_MOVEABLE;
dprintk("%s: begin!\n", __func__);
data = nfs4_alloc_lockdata(fl, nfs_file_open_context(fl->fl_file),
@ -7438,6 +7460,43 @@ nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request)
return nfs4_retry_setlk(state, cmd, request);
}
static int nfs4_delete_lease(struct file *file, void **priv)
{
return generic_setlease(file, F_UNLCK, NULL, priv);
}
static int nfs4_add_lease(struct file *file, long arg, struct file_lock **lease,
void **priv)
{
struct inode *inode = file_inode(file);
fmode_t type = arg == F_RDLCK ? FMODE_READ : FMODE_WRITE;
int ret;
/* No delegation, no lease */
if (!nfs4_have_delegation(inode, type))
return -EAGAIN;
ret = generic_setlease(file, arg, lease, priv);
if (ret || nfs4_have_delegation(inode, type))
return ret;
/* We raced with a delegation return */
nfs4_delete_lease(file, priv);
return -EAGAIN;
}
int nfs4_proc_setlease(struct file *file, long arg, struct file_lock **lease,
void **priv)
{
switch (arg) {
case F_RDLCK:
case F_WRLCK:
return nfs4_add_lease(file, arg, lease, priv);
case F_UNLCK:
return nfs4_delete_lease(file, priv);
default:
return -EINVAL;
}
}
int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid)
{
struct nfs_server *server = NFS_SERVER(state->inode);
@ -9186,7 +9245,7 @@ static struct rpc_task *_nfs41_proc_sequence(struct nfs_client *clp,
.rpc_client = clp->cl_rpcclient,
.rpc_message = &msg,
.callback_ops = &nfs41_sequence_ops,
.flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT,
.flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT | RPC_TASK_MOVEABLE,
};
struct rpc_task *ret;
@ -9385,7 +9444,7 @@ nfs4_layoutget_handle_exception(struct rpc_task *task,
{
struct inode *inode = lgp->args.inode;
struct nfs_server *server = NFS_SERVER(inode);
struct pnfs_layout_hdr *lo;
struct pnfs_layout_hdr *lo = lgp->lo;
int nfs4err = task->tk_status;
int err, status = 0;
LIST_HEAD(head);
@ -9437,7 +9496,6 @@ nfs4_layoutget_handle_exception(struct rpc_task *task,
case -NFS4ERR_BAD_STATEID:
exception->timeout = 0;
spin_lock(&inode->i_lock);
lo = NFS_I(inode)->layout;
/* If the open stateid was bad, then recover it. */
if (!lo || test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) ||
!nfs4_stateid_match_other(&lgp->args.stateid, &lo->plh_stateid)) {
@ -9509,7 +9567,8 @@ nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout)
.rpc_message = &msg,
.callback_ops = &nfs4_layoutget_call_ops,
.callback_data = lgp,
.flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF,
.flags = RPC_TASK_ASYNC | RPC_TASK_CRED_NOREF |
RPC_TASK_MOVEABLE,
};
struct pnfs_layout_segment *lseg = NULL;
struct nfs4_exception exception = {
@ -9520,9 +9579,6 @@ nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout)
dprintk("--> %s\n", __func__);
/* nfs4_layoutget_release calls pnfs_put_layout_hdr */
pnfs_get_layout_hdr(NFS_I(inode)->layout);
nfs4_init_sequence(&lgp->args.seq_args, &lgp->res.seq_res, 0, 0);
task = rpc_run_task(&task_setup_data);
@ -9650,6 +9706,7 @@ int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync)
.rpc_message = &msg,
.callback_ops = &nfs4_layoutreturn_call_ops,
.callback_data = lrp,
.flags = RPC_TASK_MOVEABLE,
};
int status = 0;
@ -9804,6 +9861,7 @@ nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync)
.rpc_message = &msg,
.callback_ops = &nfs4_layoutcommit_ops,
.callback_data = data,
.flags = RPC_TASK_MOVEABLE,
};
struct rpc_task *task;
int status = 0;
@ -10131,7 +10189,7 @@ static int nfs41_free_stateid(struct nfs_server *server,
.rpc_client = server->client,
.rpc_message = &msg,
.callback_ops = &nfs41_free_stateid_ops,
.flags = RPC_TASK_ASYNC,
.flags = RPC_TASK_ASYNC | RPC_TASK_MOVEABLE,
};
struct nfs_free_stateid_data *data;
struct rpc_task *task;

8
fs/nfs/pagelist.c
View File

@ -954,6 +954,7 @@ static int nfs_generic_pg_pgios(struct nfs_pageio_descriptor *desc)
{
struct nfs_pgio_header *hdr;
int ret;
unsigned short task_flags = 0;
hdr = nfs_pgio_header_alloc(desc->pg_rw_ops);
if (!hdr) {
@ -962,14 +963,17 @@ static int nfs_generic_pg_pgios(struct nfs_pageio_descriptor *desc)
}
nfs_pgheader_init(desc, hdr, nfs_pgio_header_free);
ret = nfs_generic_pgio(desc, hdr);
if (ret == 0)
if (ret == 0) {
if (NFS_SERVER(hdr->inode)->nfs_client->cl_minorversion)
task_flags = RPC_TASK_MOVEABLE;
ret = nfs_initiate_pgio(NFS_CLIENT(hdr->inode),
hdr,
hdr->cred,
NFS_PROTO(hdr->inode),
desc->pg_rpc_callops,
desc->pg_ioflags,
RPC_TASK_CRED_NOREF);
RPC_TASK_CRED_NOREF | task_flags);
}
return ret;
}

68
fs/nfs/pnfs.c
View File

@ -966,10 +966,8 @@ void
pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, const nfs4_stateid *new,
const struct cred *cred, bool update_barrier)
{
u32 oldseq, newseq, new_barrier = 0;
oldseq = be32_to_cpu(lo->plh_stateid.seqid);
newseq = be32_to_cpu(new->seqid);
u32 oldseq = be32_to_cpu(lo->plh_stateid.seqid);
u32 newseq = be32_to_cpu(new->seqid);
if (!pnfs_layout_is_valid(lo)) {
pnfs_set_layout_cred(lo, cred);
@ -979,19 +977,21 @@ pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, const nfs4_stateid *new,
clear_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags);
return;
}
if (pnfs_seqid_is_newer(newseq, oldseq)) {
if (pnfs_seqid_is_newer(newseq, oldseq))
nfs4_stateid_copy(&lo->plh_stateid, new);
/*
* Because of wraparound, we want to keep the barrier
* "close" to the current seqids.
*/
new_barrier = newseq - atomic_read(&lo->plh_outstanding);
}
if (update_barrier)
new_barrier = be32_to_cpu(new->seqid);
else if (new_barrier == 0)
if (update_barrier) {
pnfs_barrier_update(lo, newseq);
return;
pnfs_barrier_update(lo, new_barrier);
}
/*
* Because of wraparound, we want to keep the barrier
* "close" to the current seqids. We really only want to
* get here from a layoutget call.
*/
if (atomic_read(&lo->plh_outstanding) == 1)
pnfs_barrier_update(lo, be32_to_cpu(lo->plh_stateid.seqid));
}
static bool
@ -1128,8 +1128,7 @@ void pnfs_layoutget_free(struct nfs4_layoutget *lgp)
size_t max_pages = lgp->args.layout.pglen / PAGE_SIZE;
nfs4_free_pages(lgp->args.layout.pages, max_pages);
if (lgp->args.inode)
pnfs_put_layout_hdr(NFS_I(lgp->args.inode)->layout);
pnfs_put_layout_hdr(lgp->lo);
put_nfs_open_context(lgp->args.ctx);
kfree(lgp);
}
@ -2014,7 +2013,7 @@ lookup_again:
* If the layout segment list is empty, but there are outstanding
* layoutget calls, then they might be subject to a layoutrecall.
*/
if (list_empty(&lo->plh_segs) &&
if ((list_empty(&lo->plh_segs) || !pnfs_layout_is_valid(lo)) &&
atomic_read(&lo->plh_outstanding) != 0) {
spin_unlock(&ino->i_lock);
lseg = ERR_PTR(wait_var_event_killable(&lo->plh_outstanding,
@ -2124,6 +2123,9 @@ lookup_again:
goto out_put_layout_hdr;
}
lgp->lo = lo;
pnfs_get_layout_hdr(lo);
lseg = nfs4_proc_layoutget(lgp, &timeout);
trace_pnfs_update_layout(ino, pos, count, iomode, lo, lseg,
PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET);
@ -2255,6 +2257,7 @@ static void _lgopen_prepare_attached(struct nfs4_opendata *data,
pnfs_put_layout_hdr(lo);
return;
}
lgp->lo = lo;
data->lgp = lgp;
data->o_arg.lg_args = &lgp->args;
data->o_res.lg_res = &lgp->res;
@ -2263,6 +2266,7 @@ static void _lgopen_prepare_attached(struct nfs4_opendata *data,
static void _lgopen_prepare_floating(struct nfs4_opendata *data,
struct nfs_open_context *ctx)
{
struct inode *ino = data->dentry->d_inode;
struct pnfs_layout_range rng = {
.iomode = (data->o_arg.fmode & FMODE_WRITE) ?
IOMODE_RW: IOMODE_READ,
@ -2271,7 +2275,7 @@ static void _lgopen_prepare_floating(struct nfs4_opendata *data,
};
struct nfs4_layoutget *lgp;
lgp = pnfs_alloc_init_layoutget_args(NULL, ctx, &current_stateid,
lgp = pnfs_alloc_init_layoutget_args(ino, ctx, &current_stateid,
&rng, GFP_KERNEL);
if (!lgp)
return;
@ -2291,6 +2295,8 @@ void pnfs_lgopen_prepare(struct nfs4_opendata *data,
/* Could check on max_ops, but currently hardcoded high enough */
if (!nfs_server_capable(data->dir->d_inode, NFS_CAP_LGOPEN))
return;
if (data->lgp)
return;
if (data->state)
_lgopen_prepare_attached(data, ctx);
else
@ -2330,13 +2336,13 @@ void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp,
}
return;
}
if (!lgp->args.inode) {
if (!lgp->lo) {
lo = _pnfs_grab_empty_layout(ino, ctx);
if (!lo)
return;
lgp->args.inode = ino;
lgp->lo = lo;
} else
lo = NFS_I(lgp->args.inode)->layout;
lo = lgp->lo;
lseg = pnfs_layout_process(lgp);
if (!IS_ERR(lseg)) {
@ -2349,11 +2355,9 @@ void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp,
void nfs4_lgopen_release(struct nfs4_layoutget *lgp)
{
if (lgp != NULL) {
struct inode *inode = lgp->args.inode;
if (inode) {
struct pnfs_layout_hdr *lo = NFS_I(inode)->layout;
pnfs_clear_first_layoutget(lo);
nfs_layoutget_end(lo);
if (lgp->lo) {
pnfs_clear_first_layoutget(lgp->lo);
nfs_layoutget_end(lgp->lo);
}
pnfs_layoutget_free(lgp);
}
@ -2362,7 +2366,7 @@ void nfs4_lgopen_release(struct nfs4_layoutget *lgp)
struct pnfs_layout_segment *
pnfs_layout_process(struct nfs4_layoutget *lgp)
{
struct pnfs_layout_hdr *lo = NFS_I(lgp->args.inode)->layout;
struct pnfs_layout_hdr *lo = lgp->lo;
struct nfs4_layoutget_res *res = &lgp->res;
struct pnfs_layout_segment *lseg;
struct inode *ino = lo->plh_inode;
@ -2390,11 +2394,13 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
goto out_forget;
}
if (!pnfs_layout_is_valid(lo) && !pnfs_is_first_layoutget(lo))
goto out_forget;
if (nfs4_stateid_match_other(&lo->plh_stateid, &res->stateid)) {
/* existing state ID, make sure the sequence number matches. */
if (pnfs_layout_stateid_blocked(lo, &res->stateid)) {
if (!pnfs_layout_is_valid(lo) &&
pnfs_is_first_layoutget(lo))
if (!pnfs_layout_is_valid(lo))
lo->plh_barrier = 0;
dprintk("%s forget reply due to sequence\n", __func__);
goto out_forget;
@ -2413,8 +2419,6 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
goto out_forget;
} else {
/* We have a completely new layout */
if (!pnfs_is_first_layoutget(lo))
goto out_forget;
pnfs_set_layout_stateid(lo, &res->stateid, lgp->cred, true);
}

54
fs/nfs/pnfs_nfs.c
View File

@ -805,19 +805,16 @@ out:
}
EXPORT_SYMBOL_GPL(nfs4_pnfs_ds_add);
static void nfs4_wait_ds_connect(struct nfs4_pnfs_ds *ds)
static int nfs4_wait_ds_connect(struct nfs4_pnfs_ds *ds)
{
might_sleep();
wait_on_bit(&ds->ds_state, NFS4DS_CONNECTING,
TASK_KILLABLE);
return wait_on_bit(&ds->ds_state, NFS4DS_CONNECTING, TASK_KILLABLE);
}
static void nfs4_clear_ds_conn_bit(struct nfs4_pnfs_ds *ds)
{
smp_mb__before_atomic();
clear_bit(NFS4DS_CONNECTING, &ds->ds_state);
smp_mb__after_atomic();
wake_up_bit(&ds->ds_state, NFS4DS_CONNECTING);
clear_and_wake_up_bit(NFS4DS_CONNECTING, &ds->ds_state);
}
static struct nfs_client *(*get_v3_ds_connect)(
@ -858,7 +855,7 @@ static int _nfs4_pnfs_v3_ds_connect(struct nfs_server *mds_srv,
dprintk("--> %s DS %s\n", __func__, ds->ds_remotestr);
if (!load_v3_ds_connect())
goto out;
return -EPROTONOSUPPORT;
list_for_each_entry(da, &ds->ds_addrs, da_node) {
dprintk("%s: DS %s: trying address %s\n",
@ -993,30 +990,33 @@ int nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds,
{
int err;
again:
err = 0;
if (test_and_set_bit(NFS4DS_CONNECTING, &ds->ds_state) == 0) {
if (version == 3) {
err = _nfs4_pnfs_v3_ds_connect(mds_srv, ds, timeo,
retrans);
} else if (version == 4) {
err = _nfs4_pnfs_v4_ds_connect(mds_srv, ds, timeo,
retrans, minor_version);
} else {
dprintk("%s: unsupported DS version %d\n", __func__,
version);
err = -EPROTONOSUPPORT;
}
do {
err = nfs4_wait_ds_connect(ds);
if (err || ds->ds_clp)
goto out;
if (nfs4_test_deviceid_unavailable(devid))
return -ENODEV;
} while (test_and_set_bit(NFS4DS_CONNECTING, &ds->ds_state) != 0);
nfs4_clear_ds_conn_bit(ds);
} else {
nfs4_wait_ds_connect(ds);
if (ds->ds_clp)
goto connect_done;
/* what was waited on didn't connect AND didn't mark unavail */
if (!ds->ds_clp && !nfs4_test_deviceid_unavailable(devid))
goto again;
switch (version) {
case 3:
err = _nfs4_pnfs_v3_ds_connect(mds_srv, ds, timeo, retrans);
break;
case 4:
err = _nfs4_pnfs_v4_ds_connect(mds_srv, ds, timeo, retrans,
minor_version);
break;
default:
dprintk("%s: unsupported DS version %d\n", __func__, version);
err = -EPROTONOSUPPORT;
}
connect_done:
nfs4_clear_ds_conn_bit(ds);
out:
/*
* At this point the ds->ds_clp should be ready, but it might have
* hit an error.

20
fs/nfs/read.c
View File

@ -74,8 +74,7 @@ void nfs_pageio_init_read(struct nfs_pageio_descriptor *pgio,
}
EXPORT_SYMBOL_GPL(nfs_pageio_init_read);
static void nfs_pageio_complete_read(struct nfs_pageio_descriptor *pgio,
struct inode *inode)
static void nfs_pageio_complete_read(struct nfs_pageio_descriptor *pgio)
{
struct nfs_pgio_mirror *pgm;
unsigned long npages;
@ -86,9 +85,9 @@ static void nfs_pageio_complete_read(struct nfs_pageio_descriptor *pgio,
WARN_ON_ONCE(pgio->pg_mirror_count != 1);
pgm = &pgio->pg_mirrors[0];
NFS_I(inode)->read_io += pgm->pg_bytes_written;
NFS_I(pgio->pg_inode)->read_io += pgm->pg_bytes_written;
npages = (pgm->pg_bytes_written + PAGE_SIZE - 1) >> PAGE_SHIFT;
nfs_add_stats(inode, NFSIOS_READPAGES, npages);
nfs_add_stats(pgio->pg_inode, NFSIOS_READPAGES, npages);
}
@ -363,22 +362,23 @@ int nfs_readpage(struct file *file, struct page *page)
} else
desc.ctx = get_nfs_open_context(nfs_file_open_context(file));
xchg(&desc.ctx->error, 0);
if (!IS_SYNC(inode)) {
ret = nfs_readpage_from_fscache(desc.ctx, inode, page);
if (ret == 0)
goto out;
goto out_wait;
}
xchg(&desc.ctx->error, 0);
nfs_pageio_init_read(&desc.pgio, inode, false,
&nfs_async_read_completion_ops);
ret = readpage_async_filler(&desc, page);
if (ret)
goto out;
if (!ret)
nfs_pageio_complete_read(&desc.pgio, inode);
nfs_pageio_complete_read(&desc.pgio);
ret = desc.pgio.pg_error < 0 ? desc.pgio.pg_error : 0;
out_wait:
if (!ret) {
ret = wait_on_page_locked_killable(page);
if (!PageUptodate(page) && !ret)
@ -430,7 +430,7 @@ int nfs_readpages(struct file *file, struct address_space *mapping,
ret = read_cache_pages(mapping, pages, readpage_async_filler, &desc);
nfs_pageio_complete_read(&desc.pgio, inode);
nfs_pageio_complete_read(&desc.pgio);
read_complete:
put_nfs_open_context(desc.ctx);

6
fs/nfs/write.c
View File

@ -1810,6 +1810,7 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how,
struct nfs_commit_info *cinfo)
{
struct nfs_commit_data *data;
unsigned short task_flags = 0;
/* another commit raced with us */
if (list_empty(head))
@ -1820,8 +1821,11 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how,
/* Set up the argument struct */
nfs_init_commit(data, head, NULL, cinfo);
atomic_inc(&cinfo->mds->rpcs_out);
if (NFS_SERVER(inode)->nfs_client->cl_minorversion)
task_flags = RPC_TASK_MOVEABLE;
return nfs_initiate_commit(NFS_CLIENT(inode), data, NFS_PROTO(inode),
data->mds_ops, how, RPC_TASK_CRED_NOREF);
data->mds_ops, how,
RPC_TASK_CRED_NOREF | task_flags);
}
/*

1
include/linux/nfs_fs.h
View File

@ -84,6 +84,7 @@ struct nfs_open_context {
#define NFS_CONTEXT_RESEND_WRITES (1)
#define NFS_CONTEXT_BAD (2)
#define NFS_CONTEXT_UNLOCK (3)
#define NFS_CONTEXT_FILE_OPEN (4)
int error;
struct list_head list;

1
include/linux/nfs_xdr.h
View File

@ -277,6 +277,7 @@ struct nfs4_layoutget {
struct nfs4_layoutget_args args;
struct nfs4_layoutget_res res;
const struct cred *cred;
struct pnfs_layout_hdr *lo;
gfp_t gfp_flags;
};

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

@ -29,6 +29,7 @@
#include <linux/sunrpc/xprtmultipath.h>
struct rpc_inode;
struct rpc_sysfs_client;
/*
* The high-level client handle
@ -71,6 +72,7 @@ struct rpc_clnt {
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
struct dentry *cl_debugfs; /* debugfs directory */
#endif
struct rpc_sysfs_client *cl_sysfs; /* sysfs directory */
/* cl_work is only needed after cl_xpi is no longer used,
* and that are of similar size
*/

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

@ -121,6 +121,7 @@ struct rpc_task_setup {
*/
#define RPC_TASK_ASYNC 0x0001 /* is an async task */
#define RPC_TASK_SWAPPER 0x0002 /* is swapping in/out */
#define RPC_TASK_MOVEABLE 0x0004 /* nfs4.1+ rpc tasks */
#define RPC_TASK_NULLCREDS 0x0010 /* Use AUTH_NULL credential */
#define RPC_CALL_MAJORSEEN 0x0020 /* major timeout seen */
#define RPC_TASK_ROOTCREDS 0x0040 /* force root creds */
@ -139,6 +140,7 @@ struct rpc_task_setup {
#define RPC_IS_SOFT(t) ((t)->tk_flags & (RPC_TASK_SOFT|RPC_TASK_TIMEOUT))
#define RPC_IS_SOFTCONN(t) ((t)->tk_flags & RPC_TASK_SOFTCONN)
#define RPC_WAS_SENT(t) ((t)->tk_flags & RPC_TASK_SENT)
#define RPC_IS_MOVEABLE(t) ((t)->tk_flags & RPC_TASK_MOVEABLE)
#define RPC_TASK_RUNNING 0
#define RPC_TASK_QUEUED 1

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

@ -53,6 +53,7 @@ enum rpc_display_format_t {
struct rpc_task;
struct rpc_xprt;
struct xprt_class;
struct seq_file;
struct svc_serv;
struct net;
@ -182,9 +183,11 @@ enum xprt_transports {
XPRT_TRANSPORT_LOCAL = 257,
};
struct rpc_sysfs_xprt;
struct rpc_xprt {
struct kref kref; /* Reference count */
const struct rpc_xprt_ops *ops; /* transport methods */
unsigned int id; /* transport id */
const struct rpc_timeout *timeout; /* timeout parms */
struct sockaddr_storage addr; /* server address */
@ -288,6 +291,9 @@ struct rpc_xprt {
atomic_t inject_disconnect;
#endif
struct rcu_head rcu;
const struct xprt_class *xprt_class;
struct rpc_sysfs_xprt *xprt_sysfs;
bool main; /*mark if this is the 1st transport */
};
#if defined(CONFIG_SUNRPC_BACKCHANNEL)
@ -370,6 +376,7 @@ struct rpc_xprt * xprt_alloc(struct net *net, size_t size,
void xprt_free(struct rpc_xprt *);
void xprt_add_backlog(struct rpc_xprt *xprt, struct rpc_task *task);
bool xprt_wake_up_backlog(struct rpc_xprt *xprt, struct rpc_rqst *req);
void xprt_cleanup_ids(void);
static inline int
xprt_enable_swap(struct rpc_xprt *xprt)
@ -408,6 +415,7 @@ void xprt_conditional_disconnect(struct rpc_xprt *xprt, unsigned int cookie);
bool xprt_lock_connect(struct rpc_xprt *, struct rpc_task *, void *);
void xprt_unlock_connect(struct rpc_xprt *, void *);
void xprt_release_write(struct rpc_xprt *, struct rpc_task *);
/*
* Reserved bit positions in xprt->state
@ -419,6 +427,8 @@ void xprt_unlock_connect(struct rpc_xprt *, void *);
#define XPRT_BOUND (4)
#define XPRT_BINDING (5)
#define XPRT_CLOSING (6)
#define XPRT_OFFLINE (7)
#define XPRT_REMOVE (8)
#define XPRT_CONGESTED (9)
#define XPRT_CWND_WAIT (10)
#define XPRT_WRITE_SPACE (11)

6
include/linux/sunrpc/xprtmultipath.h
View File

@ -10,10 +10,12 @@
#define _NET_SUNRPC_XPRTMULTIPATH_H
struct rpc_xprt_iter_ops;
struct rpc_sysfs_xprt_switch;
struct rpc_xprt_switch {
spinlock_t xps_lock;
struct kref xps_kref;
unsigned int xps_id;
unsigned int xps_nxprts;
unsigned int xps_nactive;
atomic_long_t xps_queuelen;
@ -23,6 +25,7 @@ struct rpc_xprt_switch {
const struct rpc_xprt_iter_ops *xps_iter_ops;
struct rpc_sysfs_xprt_switch *xps_sysfs;
struct rcu_head xps_rcu;
};
@ -71,4 +74,7 @@ extern struct rpc_xprt *xprt_iter_get_next(struct rpc_xprt_iter *xpi);
extern bool rpc_xprt_switch_has_addr(struct rpc_xprt_switch *xps,
const struct sockaddr *sap);
extern void xprt_multipath_cleanup_ids(void);
#endif

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

@ -10,6 +10,7 @@
int init_socket_xprt(void);
void cleanup_socket_xprt(void);
unsigned short get_srcport(struct rpc_xprt *);
#define RPC_MIN_RESVPORT (1U)
#define RPC_MAX_RESVPORT (65535U)

2
net/sunrpc/Makefile
View File

@ -12,7 +12,7 @@ sunrpc-y := clnt.o xprt.o socklib.o xprtsock.o sched.o \
auth.o auth_null.o auth_unix.o \
svc.o svcsock.o svcauth.o svcauth_unix.o \
addr.o rpcb_clnt.o timer.o xdr.o \
sunrpc_syms.o cache.o rpc_pipe.o \
sunrpc_syms.o cache.o rpc_pipe.o sysfs.o \
svc_xprt.o \
xprtmultipath.o
sunrpc-$(CONFIG_SUNRPC_DEBUG) += debugfs.o

30
net/sunrpc/clnt.c
View File

@ -41,6 +41,7 @@
#include <trace/events/sunrpc.h>
#include "sunrpc.h"
#include "sysfs.h"
#include "netns.h"
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
@ -327,6 +328,7 @@ err_auth:
out:
if (pipefs_sb)
rpc_put_sb_net(net);
rpc_sysfs_client_destroy(clnt);
rpc_clnt_debugfs_unregister(clnt);
return err;
}
@ -410,6 +412,7 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args,
}
rpc_clnt_set_transport(clnt, xprt, timeout);
xprt->main = true;
xprt_iter_init(&clnt->cl_xpi, xps);
xprt_switch_put(xps);
@ -423,6 +426,7 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args,
/* save the nodename */
rpc_clnt_set_nodename(clnt, nodename);
rpc_sysfs_client_setup(clnt, xps, rpc_net_ns(clnt));
err = rpc_client_register(clnt, args->authflavor, args->client_name);
if (err)
goto out_no_path;
@ -733,6 +737,7 @@ int rpc_switch_client_transport(struct rpc_clnt *clnt,
rpc_unregister_client(clnt);
__rpc_clnt_remove_pipedir(clnt);
rpc_sysfs_client_destroy(clnt);
rpc_clnt_debugfs_unregister(clnt);
/*
@ -879,6 +884,7 @@ static void rpc_free_client_work(struct work_struct *work)
* so they cannot be called in rpciod, so they are handled separately
* here.
*/
rpc_sysfs_client_destroy(clnt);
rpc_clnt_debugfs_unregister(clnt);
rpc_free_clid(clnt);
rpc_clnt_remove_pipedir(clnt);
@ -2100,6 +2106,30 @@ call_connect_status(struct rpc_task *task)
case -ENOTCONN:
case -EAGAIN:
case -ETIMEDOUT:
if (!(task->tk_flags & RPC_TASK_NO_ROUND_ROBIN) &&
(task->tk_flags & RPC_TASK_MOVEABLE) &&
test_bit(XPRT_REMOVE, &xprt->state)) {
struct rpc_xprt *saved = task->tk_xprt;
struct rpc_xprt_switch *xps;
rcu_read_lock();
xps = xprt_switch_get(rcu_dereference(clnt->cl_xpi.xpi_xpswitch));
rcu_read_unlock();
if (xps->xps_nxprts > 1) {
long value;
xprt_release(task);
value = atomic_long_dec_return(&xprt->queuelen);
if (value == 0)
rpc_xprt_switch_remove_xprt(xps, saved);
xprt_put(saved);
task->tk_xprt = NULL;
task->tk_action = call_start;
}
xprt_switch_put(xps);
if (!task->tk_xprt)
return;
}
goto out_retry;
case -ENOBUFS:
rpc_delay(task, HZ >> 2);

12
net/sunrpc/sched.c
View File

@ -591,11 +591,21 @@ static struct rpc_task *__rpc_find_next_queued_priority(struct rpc_wait_queue *q
struct list_head *q;
struct rpc_task *task;
/*
* Service the privileged queue.
*/
q = &queue->tasks[RPC_NR_PRIORITY - 1];
if (queue->maxpriority > RPC_PRIORITY_PRIVILEGED && !list_empty(q)) {
task = list_first_entry(q, struct rpc_task, u.tk_wait.list);
goto out;
}
/*
* Service a batch of tasks from a single owner.
*/
q = &queue->tasks[queue->priority];
if (!list_empty(q) && --queue->nr) {
if (!list_empty(q) && queue->nr) {
queue->nr--;
task = list_first_entry(q, struct rpc_task, u.tk_wait.list);
goto out;
}

10
net/sunrpc/sunrpc_syms.c
View File

@ -24,6 +24,7 @@
#include <linux/sunrpc/xprtsock.h>
#include "sunrpc.h"
#include "sysfs.h"
#include "netns.h"
unsigned int sunrpc_net_id;
@ -103,6 +104,10 @@ init_sunrpc(void)
if (err)
goto out4;
err = rpc_sysfs_init();
if (err)
goto out5;
sunrpc_debugfs_init();
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
rpc_register_sysctl();
@ -111,6 +116,8 @@ init_sunrpc(void)
init_socket_xprt(); /* clnt sock transport */
return 0;
out5:
unregister_rpc_pipefs();
out4:
unregister_pernet_subsys(&sunrpc_net_ops);
out3:
@ -124,7 +131,10 @@ out:
static void __exit
cleanup_sunrpc(void)
{
rpc_sysfs_exit();
rpc_cleanup_clids();
xprt_cleanup_ids();
xprt_multipath_cleanup_ids();
rpcauth_remove_module();
cleanup_socket_xprt();
svc_cleanup_xprt_sock();

588
net/sunrpc/sysfs.c Normal file
View File

@ -0,0 +1,588 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2020 Anna Schumaker <Anna.Schumaker@Netapp.com>
*/
#include <linux/sunrpc/clnt.h>
#include <linux/kobject.h>
#include <linux/sunrpc/addr.h>
#include <linux/sunrpc/xprtsock.h>
#include "sysfs.h"
struct xprt_addr {
const char *addr;
struct rcu_head rcu;
};
static void free_xprt_addr(struct rcu_head *head)
{
struct xprt_addr *addr = container_of(head, struct xprt_addr, rcu);
kfree(addr->addr);
kfree(addr);
}
static struct kset *rpc_sunrpc_kset;
static struct kobject *rpc_sunrpc_client_kobj, *rpc_sunrpc_xprt_switch_kobj;
static void rpc_sysfs_object_release(struct kobject *kobj)
{
kfree(kobj);
}
static const struct kobj_ns_type_operations *
rpc_sysfs_object_child_ns_type(struct kobject *kobj)
{
return &net_ns_type_operations;
}
static struct kobj_type rpc_sysfs_object_type = {
.release = rpc_sysfs_object_release,
.sysfs_ops = &kobj_sysfs_ops,
.child_ns_type = rpc_sysfs_object_child_ns_type,
};
static struct kobject *rpc_sysfs_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, &rpc_sysfs_object_type,
parent, "%s", name) == 0)
return kobj;
kobject_put(kobj);
}
return NULL;
}
static inline struct rpc_xprt *
rpc_sysfs_xprt_kobj_get_xprt(struct kobject *kobj)
{
struct rpc_sysfs_xprt *x = container_of(kobj,
struct rpc_sysfs_xprt, kobject);
return xprt_get(x->xprt);
}
static inline struct rpc_xprt_switch *
rpc_sysfs_xprt_kobj_get_xprt_switch(struct kobject *kobj)
{
struct rpc_sysfs_xprt *x = container_of(kobj,
struct rpc_sysfs_xprt, kobject);
return xprt_switch_get(x->xprt_switch);
}
static inline struct rpc_xprt_switch *
rpc_sysfs_xprt_switch_kobj_get_xprt(struct kobject *kobj)
{
struct rpc_sysfs_xprt_switch *x = container_of(kobj,
struct rpc_sysfs_xprt_switch, kobject);
return xprt_switch_get(x->xprt_switch);
}
static ssize_t rpc_sysfs_xprt_dstaddr_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
ssize_t ret;
if (!xprt)
return 0;
ret = sprintf(buf, "%s\n", xprt->address_strings[RPC_DISPLAY_ADDR]);
xprt_put(xprt);
return ret + 1;
}
static ssize_t rpc_sysfs_xprt_info_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
ssize_t ret;
if (!xprt)
return 0;
ret = sprintf(buf, "last_used=%lu\ncur_cong=%lu\ncong_win=%lu\n"
"max_num_slots=%u\nmin_num_slots=%u\nnum_reqs=%u\n"
"binding_q_len=%u\nsending_q_len=%u\npending_q_len=%u\n"
"backlog_q_len=%u\nmain_xprt=%d\nsrc_port=%u\n"
"tasks_queuelen=%ld\n",
xprt->last_used, xprt->cong, xprt->cwnd, xprt->max_reqs,
xprt->min_reqs, xprt->num_reqs, xprt->binding.qlen,
xprt->sending.qlen, xprt->pending.qlen,
xprt->backlog.qlen, xprt->main,
(xprt->xprt_class->ident == XPRT_TRANSPORT_TCP) ?
get_srcport(xprt) : 0,
atomic_long_read(&xprt->queuelen));
xprt_put(xprt);
return ret + 1;
}
static ssize_t rpc_sysfs_xprt_state_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
ssize_t ret;
int locked, connected, connecting, close_wait, bound, binding,
closing, congested, cwnd_wait, write_space, offline, remove;
if (!xprt)
return 0;
if (!xprt->state) {
ret = sprintf(buf, "state=CLOSED\n");
} else {
locked = test_bit(XPRT_LOCKED, &xprt->state);
connected = test_bit(XPRT_CONNECTED, &xprt->state);
connecting = test_bit(XPRT_CONNECTING, &xprt->state);
close_wait = test_bit(XPRT_CLOSE_WAIT, &xprt->state);
bound = test_bit(XPRT_BOUND, &xprt->state);
binding = test_bit(XPRT_BINDING, &xprt->state);
closing = test_bit(XPRT_CLOSING, &xprt->state);
congested = test_bit(XPRT_CONGESTED, &xprt->state);
cwnd_wait = test_bit(XPRT_CWND_WAIT, &xprt->state);
write_space = test_bit(XPRT_WRITE_SPACE, &xprt->state);
offline = test_bit(XPRT_OFFLINE, &xprt->state);
remove = test_bit(XPRT_REMOVE, &xprt->state);
ret = sprintf(buf, "state=%s %s %s %s %s %s %s %s %s %s %s %s\n",
locked ? "LOCKED" : "",
connected ? "CONNECTED" : "",
connecting ? "CONNECTING" : "",
close_wait ? "CLOSE_WAIT" : "",
bound ? "BOUND" : "",
binding ? "BOUNDING" : "",
closing ? "CLOSING" : "",
congested ? "CONGESTED" : "",
cwnd_wait ? "CWND_WAIT" : "",
write_space ? "WRITE_SPACE" : "",
offline ? "OFFLINE" : "",
remove ? "REMOVE" : "");
}
xprt_put(xprt);
return ret + 1;
}
static ssize_t rpc_sysfs_xprt_switch_info_show(struct kobject *kobj,
struct kobj_attribute *attr,
char *buf)
{
struct rpc_xprt_switch *xprt_switch =
rpc_sysfs_xprt_switch_kobj_get_xprt(kobj);
ssize_t ret;
if (!xprt_switch)
return 0;
ret = sprintf(buf, "num_xprts=%u\nnum_active=%u\nqueue_len=%ld\n",
xprt_switch->xps_nxprts, xprt_switch->xps_nactive,
atomic_long_read(&xprt_switch->xps_queuelen));
xprt_switch_put(xprt_switch);
return ret + 1;
}
static ssize_t rpc_sysfs_xprt_dstaddr_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
struct sockaddr *saddr;
char *dst_addr;
int port;
struct xprt_addr *saved_addr;
size_t buf_len;
if (!xprt)
return 0;
if (!(xprt->xprt_class->ident == XPRT_TRANSPORT_TCP ||
xprt->xprt_class->ident == XPRT_TRANSPORT_RDMA)) {
xprt_put(xprt);
return -EOPNOTSUPP;
}
if (wait_on_bit_lock(&xprt->state, XPRT_LOCKED, TASK_KILLABLE)) {
count = -EINTR;
goto out_put;
}
saddr = (struct sockaddr *)&xprt->addr;
port = rpc_get_port(saddr);
/* buf_len is the len until the first occurence of either
* '\n' or '\0'
*/
buf_len = strcspn(buf, "\n");
dst_addr = kstrndup(buf, buf_len, GFP_KERNEL);
if (!dst_addr)
goto out_err;
saved_addr = kzalloc(sizeof(*saved_addr), GFP_KERNEL);
if (!saved_addr)
goto out_err_free;
saved_addr->addr =
rcu_dereference_raw(xprt->address_strings[RPC_DISPLAY_ADDR]);
rcu_assign_pointer(xprt->address_strings[RPC_DISPLAY_ADDR], dst_addr);
call_rcu(&saved_addr->rcu, free_xprt_addr);
xprt->addrlen = rpc_pton(xprt->xprt_net, buf, buf_len, saddr,
sizeof(*saddr));
rpc_set_port(saddr, port);
xprt_force_disconnect(xprt);
out:
xprt_release_write(xprt, NULL);
out_put:
xprt_put(xprt);
return count;
out_err_free:
kfree(dst_addr);
out_err:
count = -ENOMEM;
goto out;
}
static ssize_t rpc_sysfs_xprt_state_change(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
struct rpc_xprt *xprt = rpc_sysfs_xprt_kobj_get_xprt(kobj);
int offline = 0, online = 0, remove = 0;
struct rpc_xprt_switch *xps = rpc_sysfs_xprt_kobj_get_xprt_switch(kobj);
if (!xprt)
return 0;
if (!strncmp(buf, "offline", 7))
offline = 1;
else if (!strncmp(buf, "online", 6))
online = 1;
else if (!strncmp(buf, "remove", 6))
remove = 1;
else
return -EINVAL;
if (wait_on_bit_lock(&xprt->state, XPRT_LOCKED, TASK_KILLABLE)) {
count = -EINTR;
goto out_put;
}
if (xprt->main) {
count = -EINVAL;
goto release_tasks;
}
if (offline) {
set_bit(XPRT_OFFLINE, &xprt->state);
spin_lock(&xps->xps_lock);
xps->xps_nactive--;
spin_unlock(&xps->xps_lock);
} else if (online) {
clear_bit(XPRT_OFFLINE, &xprt->state);
spin_lock(&xps->xps_lock);
xps->xps_nactive++;
spin_unlock(&xps->xps_lock);
} else if (remove) {
if (test_bit(XPRT_OFFLINE, &xprt->state)) {
set_bit(XPRT_REMOVE, &xprt->state);
xprt_force_disconnect(xprt);
if (test_bit(XPRT_CONNECTED, &xprt->state)) {
if (!xprt->sending.qlen &&
!xprt->pending.qlen &&
!xprt->backlog.qlen &&
!atomic_long_read(&xprt->queuelen))
rpc_xprt_switch_remove_xprt(xps, xprt);
}
} else {
count = -EINVAL;
}
}
release_tasks:
xprt_release_write(xprt, NULL);
out_put:
xprt_put(xprt);
xprt_switch_put(xps);
return count;
}
int rpc_sysfs_init(void)
{
rpc_sunrpc_kset = kset_create_and_add("sunrpc", NULL, kernel_kobj);
if (!rpc_sunrpc_kset)
return -ENOMEM;
rpc_sunrpc_client_kobj =
rpc_sysfs_object_alloc("rpc-clients", rpc_sunrpc_kset, NULL);
if (!rpc_sunrpc_client_kobj)
goto err_client;
rpc_sunrpc_xprt_switch_kobj =
rpc_sysfs_object_alloc("xprt-switches", rpc_sunrpc_kset, NULL);
if (!rpc_sunrpc_xprt_switch_kobj)
goto err_switch;
return 0;
err_switch:
kobject_put(rpc_sunrpc_client_kobj);
rpc_sunrpc_client_kobj = NULL;
err_client:
kset_unregister(rpc_sunrpc_kset);
rpc_sunrpc_kset = NULL;
return -ENOMEM;
}
static void rpc_sysfs_client_release(struct kobject *kobj)
{
struct rpc_sysfs_client *c;
c = container_of(kobj, struct rpc_sysfs_client, kobject);
kfree(c);
}
static void rpc_sysfs_xprt_switch_release(struct kobject *kobj)
{
struct rpc_sysfs_xprt_switch *xprt_switch;
xprt_switch = container_of(kobj, struct rpc_sysfs_xprt_switch, kobject);
kfree(xprt_switch);
}
static void rpc_sysfs_xprt_release(struct kobject *kobj)
{
struct rpc_sysfs_xprt *xprt;
xprt = container_of(kobj, struct rpc_sysfs_xprt, kobject);
kfree(xprt);
}
static const void *rpc_sysfs_client_namespace(struct kobject *kobj)
{
return container_of(kobj, struct rpc_sysfs_client, kobject)->net;
}
static const void *rpc_sysfs_xprt_switch_namespace(struct kobject *kobj)
{
return container_of(kobj, struct rpc_sysfs_xprt_switch, kobject)->net;
}
static const void *rpc_sysfs_xprt_namespace(struct kobject *kobj)
{
return container_of(kobj, struct rpc_sysfs_xprt,
kobject)->xprt->xprt_net;
}
static struct kobj_attribute rpc_sysfs_xprt_dstaddr = __ATTR(dstaddr,
0644, rpc_sysfs_xprt_dstaddr_show, rpc_sysfs_xprt_dstaddr_store);
static struct kobj_attribute rpc_sysfs_xprt_info = __ATTR(xprt_info,
0444, rpc_sysfs_xprt_info_show, NULL);
static struct kobj_attribute rpc_sysfs_xprt_change_state = __ATTR(xprt_state,
0644, rpc_sysfs_xprt_state_show, rpc_sysfs_xprt_state_change);
static struct attribute *rpc_sysfs_xprt_attrs[] = {
&rpc_sysfs_xprt_dstaddr.attr,
&rpc_sysfs_xprt_info.attr,
&rpc_sysfs_xprt_change_state.attr,
NULL,
};
static struct kobj_attribute rpc_sysfs_xprt_switch_info =
__ATTR(xprt_switch_info, 0444, rpc_sysfs_xprt_switch_info_show, NULL);
static struct attribute *rpc_sysfs_xprt_switch_attrs[] = {
&rpc_sysfs_xprt_switch_info.attr,
NULL,
};
static struct kobj_type rpc_sysfs_client_type = {
.release = rpc_sysfs_client_release,
.sysfs_ops = &kobj_sysfs_ops,
.namespace = rpc_sysfs_client_namespace,
};
static struct kobj_type rpc_sysfs_xprt_switch_type = {
.release = rpc_sysfs_xprt_switch_release,
.default_attrs = rpc_sysfs_xprt_switch_attrs,
.sysfs_ops = &kobj_sysfs_ops,
.namespace = rpc_sysfs_xprt_switch_namespace,
};
static struct kobj_type rpc_sysfs_xprt_type = {
.release = rpc_sysfs_xprt_release,
.default_attrs = rpc_sysfs_xprt_attrs,
.sysfs_ops = &kobj_sysfs_ops,
.namespace = rpc_sysfs_xprt_namespace,
};
void rpc_sysfs_exit(void)
{
kobject_put(rpc_sunrpc_client_kobj);
kobject_put(rpc_sunrpc_xprt_switch_kobj);
kset_unregister(rpc_sunrpc_kset);
}
static struct rpc_sysfs_client *rpc_sysfs_client_alloc(struct kobject *parent,
struct net *net,
int clid)
{
struct rpc_sysfs_client *p;
p = kzalloc(sizeof(*p), GFP_KERNEL);
if (p) {
p->net = net;
p->kobject.kset = rpc_sunrpc_kset;
if (kobject_init_and_add(&p->kobject, &rpc_sysfs_client_type,
parent, "clnt-%d", clid) == 0)
return p;
kobject_put(&p->kobject);
}
return NULL;
}
static struct rpc_sysfs_xprt_switch *
rpc_sysfs_xprt_switch_alloc(struct kobject *parent,
struct rpc_xprt_switch *xprt_switch,
struct net *net,
gfp_t gfp_flags)
{
struct rpc_sysfs_xprt_switch *p;
p = kzalloc(sizeof(*p), gfp_flags);
if (p) {
p->net = net;
p->kobject.kset = rpc_sunrpc_kset;
if (kobject_init_and_add(&p->kobject,
&rpc_sysfs_xprt_switch_type,
parent, "switch-%d",
xprt_switch->xps_id) == 0)
return p;
kobject_put(&p->kobject);
}
return NULL;
}
static struct rpc_sysfs_xprt *rpc_sysfs_xprt_alloc(struct kobject *parent,
struct rpc_xprt *xprt,
gfp_t gfp_flags)
{
struct rpc_sysfs_xprt *p;
p = kzalloc(sizeof(*p), gfp_flags);
if (!p)
goto out;
p->kobject.kset = rpc_sunrpc_kset;
if (kobject_init_and_add(&p->kobject, &rpc_sysfs_xprt_type,
parent, "xprt-%d-%s", xprt->id,
xprt->address_strings[RPC_DISPLAY_PROTO]) == 0)
return p;
kobject_put(&p->kobject);
out:
return NULL;
}
void rpc_sysfs_client_setup(struct rpc_clnt *clnt,
struct rpc_xprt_switch *xprt_switch,
struct net *net)
{
struct rpc_sysfs_client *rpc_client;
rpc_client = rpc_sysfs_client_alloc(rpc_sunrpc_client_kobj,
net, clnt->cl_clid);
if (rpc_client) {
char name[] = "switch";
struct rpc_sysfs_xprt_switch *xswitch =
(struct rpc_sysfs_xprt_switch *)xprt_switch->xps_sysfs;
int ret;
clnt->cl_sysfs = rpc_client;
rpc_client->clnt = clnt;
rpc_client->xprt_switch = xprt_switch;
kobject_uevent(&rpc_client->kobject, KOBJ_ADD);
ret = sysfs_create_link_nowarn(&rpc_client->kobject,
&xswitch->kobject, name);
if (ret)
pr_warn("can't create link to %s in sysfs (%d)\n",
name, ret);
}
}
void rpc_sysfs_xprt_switch_setup(struct rpc_xprt_switch *xprt_switch,
struct rpc_xprt *xprt,
gfp_t gfp_flags)
{
struct rpc_sysfs_xprt_switch *rpc_xprt_switch;
struct net *net;
if (xprt_switch->xps_net)
net = xprt_switch->xps_net;
else
net = xprt->xprt_net;
rpc_xprt_switch =
rpc_sysfs_xprt_switch_alloc(rpc_sunrpc_xprt_switch_kobj,
xprt_switch, net, gfp_flags);
if (rpc_xprt_switch) {
xprt_switch->xps_sysfs = rpc_xprt_switch;
rpc_xprt_switch->xprt_switch = xprt_switch;
rpc_xprt_switch->xprt = xprt;
kobject_uevent(&rpc_xprt_switch->kobject, KOBJ_ADD);
}
}
void rpc_sysfs_xprt_setup(struct rpc_xprt_switch *xprt_switch,
struct rpc_xprt *xprt,
gfp_t gfp_flags)
{
struct rpc_sysfs_xprt *rpc_xprt;
struct rpc_sysfs_xprt_switch *switch_obj =
(struct rpc_sysfs_xprt_switch *)xprt_switch->xps_sysfs;
rpc_xprt = rpc_sysfs_xprt_alloc(&switch_obj->kobject, xprt, gfp_flags);
if (rpc_xprt) {
xprt->xprt_sysfs = rpc_xprt;
rpc_xprt->xprt = xprt;
rpc_xprt->xprt_switch = xprt_switch;
kobject_uevent(&rpc_xprt->kobject, KOBJ_ADD);
}
}
void rpc_sysfs_client_destroy(struct rpc_clnt *clnt)
{
struct rpc_sysfs_client *rpc_client = clnt->cl_sysfs;
if (rpc_client) {
char name[] = "switch";
sysfs_remove_link(&rpc_client->kobject, name);
kobject_uevent(&rpc_client->kobject, KOBJ_REMOVE);
kobject_del(&rpc_client->kobject);
kobject_put(&rpc_client->kobject);
clnt->cl_sysfs = NULL;
}
}
void rpc_sysfs_xprt_switch_destroy(struct rpc_xprt_switch *xprt_switch)
{
struct rpc_sysfs_xprt_switch *rpc_xprt_switch = xprt_switch->xps_sysfs;
if (rpc_xprt_switch) {
kobject_uevent(&rpc_xprt_switch->kobject, KOBJ_REMOVE);
kobject_del(&rpc_xprt_switch->kobject);
kobject_put(&rpc_xprt_switch->kobject);
xprt_switch->xps_sysfs = NULL;
}
}
void rpc_sysfs_xprt_destroy(struct rpc_xprt *xprt)
{
struct rpc_sysfs_xprt *rpc_xprt = xprt->xprt_sysfs;
if (rpc_xprt) {
kobject_uevent(&rpc_xprt->kobject, KOBJ_REMOVE);
kobject_del(&rpc_xprt->kobject);
kobject_put(&rpc_xprt->kobject);
xprt->xprt_sysfs = NULL;
}
}

42
net/sunrpc/sysfs.h Normal file
View File

@ -0,0 +1,42 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2020 Anna Schumaker <Anna.Schumaker@Netapp.com>
*/
#ifndef __SUNRPC_SYSFS_H
#define __SUNRPC_SYSFS_H
struct rpc_sysfs_client {
struct kobject kobject;
struct net *net;
struct rpc_clnt *clnt;
struct rpc_xprt_switch *xprt_switch;
};
struct rpc_sysfs_xprt_switch {
struct kobject kobject;
struct net *net;
struct rpc_xprt_switch *xprt_switch;
struct rpc_xprt *xprt;
};
struct rpc_sysfs_xprt {
struct kobject kobject;
struct rpc_xprt *xprt;
struct rpc_xprt_switch *xprt_switch;
};
int rpc_sysfs_init(void);
void rpc_sysfs_exit(void);
void rpc_sysfs_client_setup(struct rpc_clnt *clnt,
struct rpc_xprt_switch *xprt_switch,
struct net *net);
void rpc_sysfs_client_destroy(struct rpc_clnt *clnt);
void rpc_sysfs_xprt_switch_setup(struct rpc_xprt_switch *xprt_switch,
struct rpc_xprt *xprt, gfp_t gfp_flags);
void rpc_sysfs_xprt_switch_destroy(struct rpc_xprt_switch *xprt);
void rpc_sysfs_xprt_setup(struct rpc_xprt_switch *xprt_switch,
struct rpc_xprt *xprt, gfp_t gfp_flags);
void rpc_sysfs_xprt_destroy(struct rpc_xprt *xprt);
#endif

7
net/sunrpc/xdr.c
View File

@ -1230,10 +1230,9 @@ static unsigned int xdr_set_page_base(struct xdr_stream *xdr,
void *kaddr;
maxlen = xdr->buf->page_len;
if (base >= maxlen) {
base = maxlen;
maxlen = 0;
} else
if (base >= maxlen)
return 0;
else
maxlen -= base;
if (len > maxlen)
len = maxlen;

30
net/sunrpc/xprt.c
View File

@ -55,6 +55,7 @@
#include <trace/events/sunrpc.h>
#include "sunrpc.h"
#include "sysfs.h"
/*
* Local variables
@ -443,7 +444,7 @@ void xprt_release_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task)
}
EXPORT_SYMBOL_GPL(xprt_release_xprt_cong);
static inline void xprt_release_write(struct rpc_xprt *xprt, struct rpc_task *task)
void xprt_release_write(struct rpc_xprt *xprt, struct rpc_task *task)
{
if (xprt->snd_task != task)
return;
@ -1746,6 +1747,30 @@ static void xprt_free_all_slots(struct rpc_xprt *xprt)
}
}
static DEFINE_IDA(rpc_xprt_ids);
void xprt_cleanup_ids(void)
{
ida_destroy(&rpc_xprt_ids);
}
static int xprt_alloc_id(struct rpc_xprt *xprt)
{
int id;
id = ida_simple_get(&rpc_xprt_ids, 0, 0, GFP_KERNEL);
if (id < 0)
return id;
xprt->id = id;
return 0;
}
static void xprt_free_id(struct rpc_xprt *xprt)
{
ida_simple_remove(&rpc_xprt_ids, xprt->id);
}
struct rpc_xprt *xprt_alloc(struct net *net, size_t size,
unsigned int num_prealloc,
unsigned int max_alloc)
@ -1758,6 +1783,7 @@ struct rpc_xprt *xprt_alloc(struct net *net, size_t size,
if (xprt == NULL)
goto out;
xprt_alloc_id(xprt);
xprt_init(xprt, net);
for (i = 0; i < num_prealloc; i++) {
@ -1786,6 +1812,8 @@ void xprt_free(struct rpc_xprt *xprt)
{
put_net(xprt->xprt_net);
xprt_free_all_slots(xprt);
xprt_free_id(xprt);
rpc_sysfs_xprt_destroy(xprt);
kfree_rcu(xprt, rcu);
}
EXPORT_SYMBOL_GPL(xprt_free);

38
net/sunrpc/xprtmultipath.c
View File

@ -19,6 +19,8 @@
#include <linux/sunrpc/addr.h>
#include <linux/sunrpc/xprtmultipath.h>
#include "sysfs.h"
typedef struct rpc_xprt *(*xprt_switch_find_xprt_t)(struct rpc_xprt_switch *xps,
const struct rpc_xprt *cur);
@ -55,6 +57,7 @@ void rpc_xprt_switch_add_xprt(struct rpc_xprt_switch *xps,
if (xps->xps_net == xprt->xprt_net || xps->xps_net == NULL)
xprt_switch_add_xprt_locked(xps, xprt);
spin_unlock(&xps->xps_lock);
rpc_sysfs_xprt_setup(xps, xprt, GFP_KERNEL);
}
static void xprt_switch_remove_xprt_locked(struct rpc_xprt_switch *xps,
@ -62,7 +65,8 @@ static void xprt_switch_remove_xprt_locked(struct rpc_xprt_switch *xps,
{
if (unlikely(xprt == NULL))
return;
xps->xps_nactive--;
if (!test_bit(XPRT_OFFLINE, &xprt->state))
xps->xps_nactive--;
xps->xps_nxprts--;
if (xps->xps_nxprts == 0)
xps->xps_net = NULL;
@ -86,6 +90,30 @@ void rpc_xprt_switch_remove_xprt(struct rpc_xprt_switch *xps,
xprt_put(xprt);
}
static DEFINE_IDA(rpc_xprtswitch_ids);
void xprt_multipath_cleanup_ids(void)
{
ida_destroy(&rpc_xprtswitch_ids);
}
static int xprt_switch_alloc_id(struct rpc_xprt_switch *xps, gfp_t gfp_flags)
{
int id;
id = ida_simple_get(&rpc_xprtswitch_ids, 0, 0, gfp_flags);
if (id < 0)
return id;
xps->xps_id = id;
return 0;
}
static void xprt_switch_free_id(struct rpc_xprt_switch *xps)
{
ida_simple_remove(&rpc_xprtswitch_ids, xps->xps_id);
}
/**
* xprt_switch_alloc - Allocate a new struct rpc_xprt_switch
* @xprt: pointer to struct rpc_xprt
@ -103,12 +131,15 @@ 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);
xprt_switch_alloc_id(xps, gfp_flags);
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;
rpc_sysfs_xprt_switch_setup(xps, xprt, gfp_flags);
xprt_switch_add_xprt_locked(xps, xprt);
rpc_sysfs_xprt_setup(xps, xprt, gfp_flags);
}
return xps;
@ -136,6 +167,8 @@ static void xprt_switch_free(struct kref *kref)
struct rpc_xprt_switch, xps_kref);
xprt_switch_free_entries(xps);
rpc_sysfs_xprt_switch_destroy(xps);
xprt_switch_free_id(xps);
kfree_rcu(xps, xps_rcu);
}
@ -198,7 +231,8 @@ void xprt_iter_default_rewind(struct rpc_xprt_iter *xpi)
static
bool xprt_is_active(const struct rpc_xprt *xprt)
{
return kref_read(&xprt->kref) != 0;
return (kref_read(&xprt->kref) != 0 &&
!test_bit(XPRT_OFFLINE, &xprt->state));
}
static

2
net/sunrpc/xprtrdma/transport.c
View File

@ -73,6 +73,7 @@ unsigned int xprt_rdma_max_inline_read = RPCRDMA_DEF_INLINE;
unsigned int xprt_rdma_max_inline_write = RPCRDMA_DEF_INLINE;
unsigned int xprt_rdma_memreg_strategy = RPCRDMA_FRWR;
int xprt_rdma_pad_optimize;
static struct xprt_class xprt_rdma;
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
@ -349,6 +350,7 @@ xprt_setup_rdma(struct xprt_create *args)
/* Ensure xprt->addr holds valid server TCP (not RDMA)
* address, for any side protocols which peek at it */
xprt->prot = IPPROTO_TCP;
xprt->xprt_class = &xprt_rdma;
xprt->addrlen = args->addrlen;
memcpy(&xprt->addr, sap, xprt->addrlen);

19
net/sunrpc/xprtsock.c
View File

@ -91,6 +91,11 @@ static unsigned int xprt_max_resvport_limit = RPC_MAX_RESVPORT;
static struct ctl_table_header *sunrpc_table_header;
static struct xprt_class xs_local_transport;
static struct xprt_class xs_udp_transport;
static struct xprt_class xs_tcp_transport;
static struct xprt_class xs_bc_tcp_transport;
/*
* FIXME: changing the UDP slot table size should also resize the UDP
* socket buffers for existing UDP transports
@ -1648,6 +1653,13 @@ static int xs_get_srcport(struct sock_xprt *transport)
return port;
}
unsigned short get_srcport(struct rpc_xprt *xprt)
{
struct sock_xprt *sock = container_of(xprt, struct sock_xprt, xprt);
return sock->srcport;
}
EXPORT_SYMBOL(get_srcport);
static unsigned short xs_next_srcport(struct sock_xprt *transport, unsigned short port)
{
if (transport->srcport != 0)
@ -1689,7 +1701,8 @@ static int xs_bind(struct sock_xprt *transport, struct socket *sock)
err = kernel_bind(sock, (struct sockaddr *)&myaddr,
transport->xprt.addrlen);
if (err == 0) {
transport->srcport = port;
if (transport->xprt.reuseport)
transport->srcport = port;
break;
}
last = port;
@ -2779,6 +2792,7 @@ static struct rpc_xprt *xs_setup_local(struct xprt_create *args)
transport = container_of(xprt, struct sock_xprt, xprt);
xprt->prot = 0;
xprt->xprt_class = &xs_local_transport;
xprt->max_payload = RPC_MAX_FRAGMENT_SIZE;
xprt->bind_timeout = XS_BIND_TO;
@ -2848,6 +2862,7 @@ static struct rpc_xprt *xs_setup_udp(struct xprt_create *args)
transport = container_of(xprt, struct sock_xprt, xprt);
xprt->prot = IPPROTO_UDP;
xprt->xprt_class = &xs_udp_transport;
/* XXX: header size can vary due to auth type, IPv6, etc. */
xprt->max_payload = (1U << 16) - (MAX_HEADER << 3);
@ -2928,6 +2943,7 @@ static struct rpc_xprt *xs_setup_tcp(struct xprt_create *args)
transport = container_of(xprt, struct sock_xprt, xprt);
xprt->prot = IPPROTO_TCP;
xprt->xprt_class = &xs_tcp_transport;
xprt->max_payload = RPC_MAX_FRAGMENT_SIZE;
xprt->bind_timeout = XS_BIND_TO;
@ -3001,6 +3017,7 @@ static struct rpc_xprt *xs_setup_bc_tcp(struct xprt_create *args)
transport = container_of(xprt, struct sock_xprt, xprt);
xprt->prot = IPPROTO_TCP;
xprt->xprt_class = &xs_bc_tcp_transport;
xprt->max_payload = RPC_MAX_FRAGMENT_SIZE;
xprt->timeout = &xs_tcp_default_timeout;