obj-$(CONFIG_NFS_V4) += nfsv4.o
CFLAGS_nfs4trace.o += -I$(src)
nfsv4-y := nfs4proc.o nfs4xdr.o nfs4state.o nfs4renewd.o nfs4super.o nfs4file.o \
- delegation.o idmap.o callback.o callback_xdr.o callback_proc.o \
+ delegation.o nfs4idmap.o callback.o callback_xdr.o callback_proc.o \
nfs4namespace.o nfs4getroot.o nfs4client.o nfs4session.o \
dns_resolve.o nfs4trace.o
nfsv4-$(CONFIG_NFS_USE_LEGACY_DNS) += cache_lib.o
.free_deviceid_node = bl_free_deviceid_node,
.pg_read_ops = &bl_pg_read_ops,
.pg_write_ops = &bl_pg_write_ops,
+ .sync = pnfs_generic_sync,
};
static int __init nfs4blocklayout_init(void)
container_of(d, struct pnfs_block_dev, node);
bl_free_device(dev);
- kfree(dev);
+ kfree_rcu(dev, node.rcu);
}
static int
if (try_to_freeze())
continue;
- prepare_to_wait(&serv->sv_cb_waitq, &wq, TASK_UNINTERRUPTIBLE);
+ prepare_to_wait(&serv->sv_cb_waitq, &wq, TASK_INTERRUPTIBLE);
spin_lock_bh(&serv->sv_cb_lock);
if (!list_empty(&serv->sv_cb_list)) {
req = list_first_entry(&serv->sv_cb_list,
error);
} else {
spin_unlock_bh(&serv->sv_cb_lock);
- /* schedule_timeout to game the hung task watchdog */
- schedule_timeout(60 * HZ);
+ schedule();
finish_wait(&serv->sv_cb_waitq, &wq);
}
+ flush_signals(current);
}
return 0;
}
#include <linux/lockd/bind.h>
#include <linux/seq_file.h>
#include <linux/mount.h>
-#include <linux/nfs_idmap.h>
#include <linux/vfs.h>
#include <linux/inet.h>
#include <linux/in6.h>
if (freeme == NULL)
goto out;
}
- list_add_rcu(&delegation->super_list, &server->delegations);
+ list_add_tail_rcu(&delegation->super_list, &server->delegations);
rcu_assign_pointer(nfsi->delegation, delegation);
delegation = NULL;
delegation = nfs_inode_detach_delegation(inode);
if (delegation != NULL)
- nfs_do_return_delegation(inode, delegation, 0);
+ nfs_do_return_delegation(inode, delegation, 1);
}
/**
if (scratch == NULL)
return -ENOMEM;
+ if (buflen == 0)
+ goto out_nopages;
+
xdr_init_decode_pages(&stream, &buf, xdr_pages, buflen);
xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE);
break;
} while (!entry->eof);
+out_nopages:
if (count == 0 || (status == -EBADCOOKIE && entry->eof != 0)) {
array = nfs_readdir_get_array(page);
if (!IS_ERR(array)) {
int i;
ssize_t count;
- WARN_ON_ONCE(hdr->pgio_mirror_idx >= dreq->mirror_count);
-
- count = dreq->mirrors[hdr->pgio_mirror_idx].count;
- if (count + dreq->io_start < hdr->io_start + hdr->good_bytes) {
- count = hdr->io_start + hdr->good_bytes - dreq->io_start;
- dreq->mirrors[hdr->pgio_mirror_idx].count = count;
- }
-
- /* update the dreq->count by finding the minimum agreed count from all
- * mirrors */
- count = dreq->mirrors[0].count;
+ if (dreq->mirror_count == 1) {
+ dreq->mirrors[hdr->pgio_mirror_idx].count += hdr->good_bytes;
+ dreq->count += hdr->good_bytes;
+ } else {
+ /* mirrored writes */
+ count = dreq->mirrors[hdr->pgio_mirror_idx].count;
+ if (count + dreq->io_start < hdr->io_start + hdr->good_bytes) {
+ count = hdr->io_start + hdr->good_bytes - dreq->io_start;
+ dreq->mirrors[hdr->pgio_mirror_idx].count = count;
+ }
+ /* update the dreq->count by finding the minimum agreed count from all
+ * mirrors */
+ count = dreq->mirrors[0].count;
- for (i = 1; i < dreq->mirror_count; i++)
- count = min(count, dreq->mirrors[i].count);
+ for (i = 1; i < dreq->mirror_count; i++)
+ count = min(count, dreq->mirrors[i].count);
- dreq->count = count;
+ dreq->count = count;
+ }
}
/*
if (!IS_SWAPFILE(inode))
return 0;
-#ifndef CONFIG_NFS_SWAP
- dprintk("NFS: nfs_direct_IO (%pD) off/no(%Ld/%lu) EINVAL\n",
- iocb->ki_filp, (long long) pos, iter->nr_segs);
-
- return -EINVAL;
-#else
VM_BUG_ON(iov_iter_count(iter) != PAGE_SIZE);
if (iov_iter_rw(iter) == READ)
return nfs_file_direct_read(iocb, iter, pos);
return nfs_file_direct_write(iocb, iter);
-#endif /* CONFIG_NFS_SWAP */
}
static void nfs_direct_release_pages(struct page **pages, unsigned int npages)
if (i_size_read(inode) < iocb->ki_pos)
i_size_write(inode, iocb->ki_pos);
spin_unlock(&inode->i_lock);
+ generic_write_sync(file, pos, result);
}
}
nfs_direct_req_release(dreq);
trace_nfs_fsync_enter(inode);
+ nfs_inode_dio_wait(inode);
do {
ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
if (ret != 0)
* Flush all pending writes before doing anything
* with locks..
*/
- nfs_sync_mapping(filp->f_mapping);
+ vfs_fsync(filp, 0);
l_ctx = nfs_get_lock_context(nfs_file_open_context(filp));
if (!IS_ERR(l_ctx)) {
hdr->res.verf->committed != NFS_DATA_SYNC)
return;
- pnfs_set_layoutcommit(hdr);
+ pnfs_set_layoutcommit(hdr->inode, hdr->lseg,
+ hdr->mds_offset + hdr->res.count);
dprintk("%s inode %lu pls_end_pos %lu\n", __func__, hdr->inode->i_ino,
(unsigned long) NFS_I(hdr->inode)->layout->plh_lwb);
}
}
if (data->verf.committed == NFS_UNSTABLE)
- pnfs_commit_set_layoutcommit(data);
+ pnfs_set_layoutcommit(data->inode, data->lseg, data->lwb);
return 0;
}
}
static void
-filelayout_free_deveiceid_node(struct nfs4_deviceid_node *d)
+filelayout_free_deviceid_node(struct nfs4_deviceid_node *d)
{
nfs4_fl_free_deviceid(container_of(d, struct nfs4_file_layout_dsaddr, id_node));
}
.read_pagelist = filelayout_read_pagelist,
.write_pagelist = filelayout_write_pagelist,
.alloc_deviceid_node = filelayout_alloc_deviceid_node,
- .free_deviceid_node = filelayout_free_deveiceid_node,
+ .free_deviceid_node = filelayout_free_deviceid_node,
+ .sync = pnfs_nfs_generic_sync,
};
static int __init nfs4filelayout_init(void)
nfs4_pnfs_ds_put(ds);
}
kfree(dsaddr->stripe_indices);
- kfree(dsaddr);
+ kfree_rcu(dsaddr, id_node.rcu);
}
/* Decode opaque device data and return the result */
#include <linux/module.h>
#include <linux/sunrpc/metrics.h>
-#include <linux/nfs_idmap.h>
#include "flexfilelayout.h"
#include "../nfs4session.h"
+#include "../nfs4idmap.h"
#include "../internal.h"
#include "../delegation.h"
#include "../nfs4trace.h"
static void
ff_layout_set_layoutcommit(struct nfs_pgio_header *hdr)
{
- pnfs_set_layoutcommit(hdr);
+ pnfs_set_layoutcommit(hdr->inode, hdr->lseg,
+ hdr->mds_offset + hdr->res.count);
dprintk("%s inode %lu pls_end_pos %lu\n", __func__, hdr->inode->i_ino,
(unsigned long) NFS_I(hdr->inode)->layout->plh_lwb);
}
}
if (data->verf.committed == NFS_UNSTABLE)
- pnfs_commit_set_layoutcommit(data);
+ pnfs_set_layoutcommit(data->inode, data->lseg, data->lwb);
return 0;
}
}
static void
-ff_layout_free_deveiceid_node(struct nfs4_deviceid_node *d)
+ff_layout_free_deviceid_node(struct nfs4_deviceid_node *d)
{
nfs4_ff_layout_free_deviceid(container_of(d, struct nfs4_ff_layout_ds,
id_node));
.pg_read_ops = &ff_layout_pg_read_ops,
.pg_write_ops = &ff_layout_pg_write_ops,
.get_ds_info = ff_layout_get_ds_info,
- .free_deviceid_node = ff_layout_free_deveiceid_node,
+ .free_deviceid_node = ff_layout_free_deviceid_node,
.mark_request_commit = pnfs_layout_mark_request_commit,
.clear_request_commit = pnfs_generic_clear_request_commit,
.scan_commit_lists = pnfs_generic_scan_commit_lists,
.write_pagelist = ff_layout_write_pagelist,
.alloc_deviceid_node = ff_layout_alloc_deviceid_node,
.encode_layoutreturn = ff_layout_encode_layoutreturn,
+ .sync = pnfs_nfs_generic_sync,
};
static int __init nfs4flexfilelayout_init(void)
{
nfs4_print_deviceid(&mirror_ds->id_node.deviceid);
nfs4_pnfs_ds_put(mirror_ds->ds);
- kfree(mirror_ds);
+ kfree_rcu(mirror_ds, id_node.rcu);
}
/* Decode opaque device data and construct new_ds using it */
nfs_clear_inode(inode);
}
+int nfs_sync_inode(struct inode *inode)
+{
+ nfs_inode_dio_wait(inode);
+ return nfs_wb_all(inode);
+}
+EXPORT_SYMBOL_GPL(nfs_sync_inode);
+
/**
* nfs_sync_mapping - helper to flush all mmapped dirty data to disk
*/
nfs_zap_caches_locked(inode);
spin_unlock(&inode->i_lock);
}
-EXPORT_SYMBOL_GPL(nfs_zap_caches);
void nfs_zap_mapping(struct inode *inode, struct address_space *mapping)
{
trace_nfs_setattr_enter(inode);
/* Write all dirty data */
- if (S_ISREG(inode->i_mode)) {
- nfs_inode_dio_wait(inode);
- nfs_wb_all(inode);
- }
+ if (S_ISREG(inode->i_mode))
+ nfs_sync_inode(inode);
fattr = nfs_alloc_fattr();
if (fattr == NULL)
trace_nfs_getattr_enter(inode);
/* Flush out writes to the server in order to update c/mtime. */
if (S_ISREG(inode->i_mode)) {
- nfs_inode_dio_wait(inode);
- err = filemap_write_and_wait(inode->i_mapping);
+ mutex_lock(&inode->i_mutex);
+ err = nfs_sync_inode(inode);
+ mutex_unlock(&inode->i_mutex);
if (err)
goto out;
}
}
EXPORT_SYMBOL_GPL(nfs_post_op_update_inode_force_wcc);
+
+static inline bool nfs_fileid_valid(struct nfs_inode *nfsi,
+ struct nfs_fattr *fattr)
+{
+ bool ret1 = true, ret2 = true;
+
+ if (fattr->valid & NFS_ATTR_FATTR_FILEID)
+ ret1 = (nfsi->fileid == fattr->fileid);
+ if (fattr->valid & NFS_ATTR_FATTR_MOUNTED_ON_FILEID)
+ ret2 = (nfsi->fileid == fattr->mounted_on_fileid);
+ return ret1 || ret2;
+}
+
/*
* Many nfs protocol calls return the new file attributes after
* an operation. Here we update the inode to reflect the state
nfs_display_fhandle_hash(NFS_FH(inode)),
atomic_read(&inode->i_count), fattr->valid);
- if ((fattr->valid & NFS_ATTR_FATTR_FILEID) && nfsi->fileid != fattr->fileid) {
+ if (!nfs_fileid_valid(nfsi, fattr)) {
printk(KERN_ERR "NFS: server %s error: fileid changed\n"
"fsid %s: expected fileid 0x%Lx, got 0x%Lx\n",
NFS_SERVER(inode)->nfs_client->cl_hostname,
struct inode *nfs_alloc_inode(struct super_block *sb)
{
struct nfs_inode *nfsi;
- nfsi = (struct nfs_inode *)kmem_cache_alloc(nfs_inode_cachep, GFP_KERNEL);
+ nfsi = kmem_cache_alloc(nfs_inode_cachep, GFP_KERNEL);
if (!nfsi)
return NULL;
nfsi->flags = 0UL;
loff_t offset, loff_t len)
{
struct inode *inode = file_inode(filep);
+ struct nfs_server *server = NFS_SERVER(inode);
struct nfs42_falloc_args args = {
.falloc_fh = NFS_FH(inode),
.falloc_offset = offset,
.falloc_length = len,
+ .falloc_bitmask = server->cache_consistency_bitmask,
+ };
+ struct nfs42_falloc_res res = {
+ .falloc_server = server,
};
- struct nfs42_falloc_res res;
- struct nfs_server *server = NFS_SERVER(inode);
int status;
msg->rpc_argp = &args;
if (status)
return status;
- return nfs4_call_sync(server->client, server, msg,
- &args.seq_args, &res.seq_res, 0);
+ res.falloc_fattr = nfs_alloc_fattr();
+ if (!res.falloc_fattr)
+ return -ENOMEM;
+
+ status = nfs4_call_sync(server->client, server, msg,
+ &args.seq_args, &res.seq_res, 0);
+ if (status == 0)
+ status = nfs_post_op_update_inode(inode, res.falloc_fattr);
+
+ kfree(res.falloc_fattr);
+ return status;
}
static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE))
return -EOPNOTSUPP;
+ mutex_lock(&inode->i_mutex);
+
err = nfs42_proc_fallocate(&msg, filep, offset, len);
if (err == -EOPNOTSUPP)
NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE;
+
+ mutex_unlock(&inode->i_mutex);
return err;
}
if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE))
return -EOPNOTSUPP;
+ nfs_wb_all(inode);
+ mutex_lock(&inode->i_mutex);
+
err = nfs42_proc_fallocate(&msg, filep, offset, len);
+ if (err == 0)
+ truncate_pagecache_range(inode, offset, (offset + len) -1);
if (err == -EOPNOTSUPP)
NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE;
+
+ mutex_unlock(&inode->i_mutex);
return err;
}
#define NFS4_enc_allocate_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
- encode_allocate_maxsz)
+ encode_allocate_maxsz + \
+ encode_getattr_maxsz)
#define NFS4_dec_allocate_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
- decode_allocate_maxsz)
+ decode_allocate_maxsz + \
+ decode_getattr_maxsz)
#define NFS4_enc_deallocate_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
- encode_deallocate_maxsz)
+ encode_deallocate_maxsz + \
+ encode_getattr_maxsz)
#define NFS4_dec_deallocate_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
- decode_deallocate_maxsz)
+ decode_deallocate_maxsz + \
+ decode_getattr_maxsz)
#define NFS4_enc_seek_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_seek_maxsz)
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->falloc_fh, &hdr);
encode_allocate(xdr, args, &hdr);
+ encode_getfattr(xdr, args->falloc_bitmask, &hdr);
encode_nops(&hdr);
}
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, args->falloc_fh, &hdr);
encode_deallocate(xdr, args, &hdr);
+ encode_getfattr(xdr, args->falloc_bitmask, &hdr);
encode_nops(&hdr);
}
if (status)
goto out;
status = decode_allocate(xdr, res);
+ if (status)
+ goto out;
+ decode_getfattr(xdr, res->falloc_fattr, res->falloc_server);
out:
return status;
}
if (status)
goto out;
status = decode_deallocate(xdr, res);
+ if (status)
+ goto out;
+ decode_getfattr(xdr, res->falloc_fattr, res->falloc_server);
out:
return status;
}
*/
#include <linux/module.h>
#include <linux/nfs_fs.h>
-#include <linux/nfs_idmap.h>
#include <linux/nfs_mount.h>
#include <linux/sunrpc/addr.h>
#include <linux/sunrpc/auth.h>
#include "callback.h"
#include "delegation.h"
#include "nfs4session.h"
+#include "nfs4idmap.h"
#include "pnfs.h"
#include "netns.h"
#include "fscache.h"
#include "pnfs.h"
+#include "nfstrace.h"
+
#ifdef CONFIG_NFS_V4_2
#include "nfs42.h"
#endif
if (openflags & O_TRUNC) {
attr.ia_valid |= ATTR_SIZE;
attr.ia_size = 0;
- nfs_wb_all(inode);
+ nfs_sync_inode(inode);
}
inode = NFS_PROTO(dir)->open_context(dir, ctx, openflags, &attr, &opened);
int ret;
struct inode *inode = file_inode(file);
+ trace_nfs_fsync_enter(inode);
+
+ nfs_inode_dio_wait(inode);
do {
ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
if (ret != 0)
mutex_lock(&inode->i_mutex);
ret = nfs_file_fsync_commit(file, start, end, datasync);
if (!ret)
- ret = pnfs_layoutcommit_inode(inode, true);
+ ret = pnfs_sync_inode(inode, !!datasync);
mutex_unlock(&inode->i_mutex);
/*
* If nfs_file_fsync_commit detected a server reboot, then
end = LLONG_MAX;
} while (ret == -EAGAIN);
+ trace_nfs_fsync_exit(inode, ret);
return ret;
}
if (ret < 0)
return ret;
- mutex_lock(&inode->i_mutex);
if (mode & FALLOC_FL_PUNCH_HOLE)
- ret = nfs42_proc_deallocate(filep, offset, len);
- else
- ret = nfs42_proc_allocate(filep, offset, len);
- mutex_unlock(&inode->i_mutex);
-
- nfs_zap_caches(inode);
- return ret;
+ return nfs42_proc_deallocate(filep, offset, len);
+ return nfs42_proc_allocate(filep, offset, len);
}
#endif /* CONFIG_NFS_V4_2 */
#include <linux/types.h>
#include <linux/parser.h>
#include <linux/fs.h>
-#include <linux/nfs_idmap.h>
#include <net/net_namespace.h>
#include <linux/sunrpc/rpc_pipe_fs.h>
#include <linux/nfs_fs.h>
#include "internal.h"
#include "netns.h"
+#include "nfs4idmap.h"
#include "nfs4trace.h"
#define NFS_UINT_MAXLEN 11
/*
- * include/linux/nfs_idmap.h
+ * fs/nfs/nfs4idmap.h
*
* UID and GID to name mapping for clients.
*
struct nfs_fattr;
struct nfs4_string;
-#if IS_ENABLED(CONFIG_NFS_V4)
int nfs_idmap_init(void);
void nfs_idmap_quit(void);
-#else
-static inline int nfs_idmap_init(void)
-{
- return 0;
-}
-
-static inline void nfs_idmap_quit(void)
-{}
-#endif
-
int nfs_idmap_new(struct nfs_client *);
void nfs_idmap_delete(struct nfs_client *);
#include <linux/namei.h>
#include <linux/mount.h>
#include <linux/module.h>
-#include <linux/nfs_idmap.h>
#include <linux/xattr.h>
#include <linux/utsname.h>
#include <linux/freezer.h>
#include "callback.h"
#include "pnfs.h"
#include "netns.h"
+#include "nfs4idmap.h"
#include "nfs4session.h"
#include "fscache.h"
| FATTR4_WORD1_SPACE_USED
| FATTR4_WORD1_TIME_ACCESS
| FATTR4_WORD1_TIME_METADATA
- | FATTR4_WORD1_TIME_MODIFY,
+ | FATTR4_WORD1_TIME_MODIFY
+ | FATTR4_WORD1_MOUNTED_ON_FILEID,
#ifdef CONFIG_NFS_V4_SECURITY_LABEL
FATTR4_WORD2_SECURITY_LABEL
#endif
struct nfs_fsinfo *info,
bool auth_probe)
{
- int status;
+ int status = 0;
- switch (auth_probe) {
- case false:
+ if (!auth_probe)
status = nfs4_lookup_root(server, fhandle, info);
- if (status != -NFS4ERR_WRONGSEC)
- break;
- default:
+
+ if (auth_probe || status == NFS4ERR_WRONGSEC)
status = nfs4_do_find_root_sec(server, fhandle, info);
- }
if (status == 0)
status = nfs4_server_capabilities(server, fhandle);
{
struct nfs4_getdeviceinfo_args args = {
.pdev = pdev,
+ .notify_types = NOTIFY_DEVICEID4_CHANGE |
+ NOTIFY_DEVICEID4_DELETE,
};
struct nfs4_getdeviceinfo_res res = {
.pdev = pdev,
dprintk("--> %s\n", __func__);
status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0);
+ if (res.notification & ~args.notify_types)
+ dprintk("%s: unsupported notification\n", __func__);
+ if (res.notification != args.notify_types)
+ pdev->nocache = 1;
+
dprintk("<-- %s status=%d\n", __func__, status);
return status;
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/nfs_fs.h>
-#include <linux/nfs_idmap.h>
#include <linux/kthread.h>
#include <linux/module.h>
#include <linux/random.h>
#include "callback.h"
#include "delegation.h"
#include "internal.h"
+#include "nfs4idmap.h"
#include "nfs4session.h"
#include "pnfs.h"
#include "netns.h"
*/
#include <linux/init.h>
#include <linux/module.h>
-#include <linux/nfs_idmap.h>
#include <linux/nfs4_mount.h>
#include <linux/nfs_fs.h>
#include "delegation.h"
#include "internal.h"
#include "nfs4_fs.h"
+#include "nfs4idmap.h"
#include "dns_resolve.h"
#include "pnfs.h"
#include "nfs.h"
{
truncate_inode_pages_final(&inode->i_data);
clear_inode(inode);
- pnfs_return_layout(inode);
- pnfs_destroy_layout(NFS_I(inode));
/* If we are holding a delegation, return it! */
nfs_inode_return_delegation_noreclaim(inode);
+ /* Note that above delegreturn would trigger pnfs return-on-close */
+ pnfs_return_layout(inode);
+ pnfs_destroy_layout(NFS_I(inode));
/* First call standard NFS clear_inode() code */
nfs_clear_inode(inode);
}
* Copyright (c) 2006 Trond Myklebust <Trond.Myklebust@netapp.com>
*/
#include <linux/sysctl.h>
-#include <linux/nfs_idmap.h>
#include <linux/nfs_fs.h>
#include "nfs4_fs.h"
+#include "nfs4idmap.h"
#include "callback.h"
static const int nfs_set_port_min = 0;
#include <linux/nfs.h>
#include <linux/nfs4.h>
#include <linux/nfs_fs.h>
-#include <linux/nfs_idmap.h>
#include "nfs4_fs.h"
#include "internal.h"
+#include "nfs4idmap.h"
#include "nfs4session.h"
#include "pnfs.h"
#include "netns.h"
p = reserve_space(xdr, 4 + 4);
*p++ = cpu_to_be32(1); /* bitmap length */
- *p++ = cpu_to_be32(NOTIFY_DEVICEID4_CHANGE | NOTIFY_DEVICEID4_DELETE);
+ *p++ = cpu_to_be32(args->notify_types);
}
static void
#if defined(CONFIG_NFS_V4_1)
static int decode_getdeviceinfo(struct xdr_stream *xdr,
- struct pnfs_device *pdev)
+ struct nfs4_getdeviceinfo_res *res)
{
+ struct pnfs_device *pdev = res->pdev;
__be32 *p;
uint32_t len, type;
int status;
if (unlikely(!p))
goto out_overflow;
- if (be32_to_cpup(p++) &
- ~(NOTIFY_DEVICEID4_CHANGE | NOTIFY_DEVICEID4_DELETE)) {
- dprintk("%s: unsupported notification\n",
- __func__);
- }
-
+ res->notification = be32_to_cpup(p++);
for (i = 1; i < len; i++) {
if (be32_to_cpup(p++)) {
dprintk("%s: unsupported notification\n",
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status != 0)
goto out;
- status = decode_getdeviceinfo(xdr, res->pdev);
+ status = decode_getdeviceinfo(xdr, res);
out:
return status;
}
.p_name = #proc, \
}
+#define STUB(proc) \
+[NFSPROC4_CLNT_##proc] = { \
+ .p_name = #proc, \
+}
+
struct rpc_procinfo nfs4_procedures[] = {
PROC(READ, enc_read, dec_read),
PROC(WRITE, enc_write, dec_write),
PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name),
PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid),
PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid),
+ STUB(GETDEVICELIST),
PROC(BIND_CONN_TO_SESSION,
enc_bind_conn_to_session, dec_bind_conn_to_session),
PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid),
#define CREATE_TRACE_POINTS
#include "nfstrace.h"
+
+EXPORT_TRACEPOINT_SYMBOL_GPL(nfs_fsync_enter);
+EXPORT_TRACEPOINT_SYMBOL_GPL(nfs_fsync_exit);
dprintk("%s: free od=%p\n", __func__, de->od.od);
osduld_put_device(de->od.od);
- kfree(de);
+ kfree_rcu(d, rcu);
}
struct objio_segment {
.pg_read_ops = &objio_pg_read_ops,
.pg_write_ops = &objio_pg_write_ops,
+ .sync = pnfs_generic_sync,
+
.free_deviceid_node = objio_free_deviceid_node,
.encode_layoutcommit = objlayout_encode_layoutcommit,
pnfs_get_layout_hdr(lo); /* matched in pnfs_roc_release */
spin_unlock(&ino->i_lock);
pnfs_free_lseg_list(&tmp_list);
+ pnfs_layoutcommit_inode(ino, true);
return true;
out_noroc:
}
}
spin_unlock(&ino->i_lock);
- if (layoutreturn)
+ if (layoutreturn) {
+ pnfs_layoutcommit_inode(ino, true);
pnfs_send_layoutreturn(lo, stateid, IOMODE_ANY, true);
+ }
return false;
}
{
trace_nfs4_pnfs_write(hdr, hdr->pnfs_error);
if (!hdr->pnfs_error) {
- pnfs_set_layoutcommit(hdr);
+ pnfs_set_layoutcommit(hdr->inode, hdr->lseg,
+ hdr->mds_offset + hdr->res.count);
hdr->mds_ops->rpc_call_done(&hdr->task, hdr);
} else
pnfs_ld_handle_write_error(hdr);
pnfs_put_lseg(hdr->lseg);
nfs_pgio_header_free(hdr);
}
-EXPORT_SYMBOL_GPL(pnfs_writehdr_free);
int
pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc)
pnfs_put_lseg(hdr->lseg);
nfs_pgio_header_free(hdr);
}
-EXPORT_SYMBOL_GPL(pnfs_readhdr_free);
int
pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc)
EXPORT_SYMBOL_GPL(pnfs_set_lo_fail);
void
-pnfs_set_layoutcommit(struct nfs_pgio_header *hdr)
+pnfs_set_layoutcommit(struct inode *inode, struct pnfs_layout_segment *lseg,
+ loff_t end_pos)
{
- struct inode *inode = hdr->inode;
struct nfs_inode *nfsi = NFS_I(inode);
- loff_t end_pos = hdr->mds_offset + hdr->res.count;
bool mark_as_dirty = false;
spin_lock(&inode->i_lock);
if (!test_and_set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) {
- mark_as_dirty = true;
- dprintk("%s: Set layoutcommit for inode %lu ",
- __func__, inode->i_ino);
- }
- if (!test_and_set_bit(NFS_LSEG_LAYOUTCOMMIT, &hdr->lseg->pls_flags)) {
- /* references matched in nfs4_layoutcommit_release */
- pnfs_get_lseg(hdr->lseg);
- }
- if (end_pos > nfsi->layout->plh_lwb)
nfsi->layout->plh_lwb = end_pos;
- spin_unlock(&inode->i_lock);
- dprintk("%s: lseg %p end_pos %llu\n",
- __func__, hdr->lseg, nfsi->layout->plh_lwb);
-
- /* if pnfs_layoutcommit_inode() runs between inode locks, the next one
- * will be a noop because NFS_INO_LAYOUTCOMMIT will not be set */
- if (mark_as_dirty)
- mark_inode_dirty_sync(inode);
-}
-EXPORT_SYMBOL_GPL(pnfs_set_layoutcommit);
-
-void pnfs_commit_set_layoutcommit(struct nfs_commit_data *data)
-{
- struct inode *inode = data->inode;
- struct nfs_inode *nfsi = NFS_I(inode);
- bool mark_as_dirty = false;
-
- spin_lock(&inode->i_lock);
- if (!test_and_set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) {
mark_as_dirty = true;
dprintk("%s: Set layoutcommit for inode %lu ",
__func__, inode->i_ino);
- }
- if (!test_and_set_bit(NFS_LSEG_LAYOUTCOMMIT, &data->lseg->pls_flags)) {
+ } else if (end_pos > nfsi->layout->plh_lwb)
+ nfsi->layout->plh_lwb = end_pos;
+ if (!test_and_set_bit(NFS_LSEG_LAYOUTCOMMIT, &lseg->pls_flags)) {
/* references matched in nfs4_layoutcommit_release */
- pnfs_get_lseg(data->lseg);
+ pnfs_get_lseg(lseg);
}
- if (data->lwb > nfsi->layout->plh_lwb)
- nfsi->layout->plh_lwb = data->lwb;
spin_unlock(&inode->i_lock);
dprintk("%s: lseg %p end_pos %llu\n",
- __func__, data->lseg, nfsi->layout->plh_lwb);
+ __func__, lseg, nfsi->layout->plh_lwb);
/* if pnfs_layoutcommit_inode() runs between inode locks, the next one
* will be a noop because NFS_INO_LAYOUTCOMMIT will not be set */
if (mark_as_dirty)
mark_inode_dirty_sync(inode);
}
-EXPORT_SYMBOL_GPL(pnfs_commit_set_layoutcommit);
+EXPORT_SYMBOL_GPL(pnfs_set_layoutcommit);
void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data)
{
pnfs_list_write_lseg(inode, &data->lseg_list);
end_pos = nfsi->layout->plh_lwb;
- nfsi->layout->plh_lwb = 0;
nfs4_stateid_copy(&data->args.stateid, &nfsi->layout->plh_stateid);
spin_unlock(&inode->i_lock);
status = ld->prepare_layoutcommit(&data->args);
if (status) {
spin_lock(&inode->i_lock);
- if (end_pos < nfsi->layout->plh_lwb)
+ set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags);
+ if (end_pos > nfsi->layout->plh_lwb)
nfsi->layout->plh_lwb = end_pos;
spin_unlock(&inode->i_lock);
put_rpccred(data->cred);
- set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags);
goto clear_layoutcommitting;
}
}
}
EXPORT_SYMBOL_GPL(pnfs_layoutcommit_inode);
+int
+pnfs_generic_sync(struct inode *inode, bool datasync)
+{
+ return pnfs_layoutcommit_inode(inode, true);
+}
+EXPORT_SYMBOL_GPL(pnfs_generic_sync);
+
struct nfs4_threshold *pnfs_mdsthreshold_alloc(void)
{
struct nfs4_threshold *thp;
int how,
struct nfs_commit_info *cinfo);
+ int (*sync)(struct inode *inode, bool datasync);
+
/*
* Return PNFS_ATTEMPTED to indicate the layout code has attempted
* I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS
struct page **pages;
unsigned int pgbase;
unsigned int pglen; /* reply buffer length */
+ unsigned char nocache : 1;/* May not be cached */
};
#define NFS4_PNFS_GETDEVLIST_MAXNUM 16
void pnfs_roc_release(struct inode *ino);
void pnfs_roc_set_barrier(struct inode *ino, u32 barrier);
bool pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task);
-void pnfs_set_layoutcommit(struct nfs_pgio_header *);
-void pnfs_commit_set_layoutcommit(struct nfs_commit_data *data);
+void pnfs_set_layoutcommit(struct inode *, struct pnfs_layout_segment *, loff_t);
void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data);
int pnfs_layoutcommit_inode(struct inode *inode, bool sync);
+int pnfs_generic_sync(struct inode *inode, bool datasync);
+int pnfs_nfs_generic_sync(struct inode *inode, bool datasync);
int _pnfs_return_layout(struct inode *);
int pnfs_commit_and_return_layout(struct inode *);
void pnfs_ld_write_done(struct nfs_pgio_header *);
enum {
NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */
NFS_DEVICEID_UNAVAILABLE, /* device temporarily unavailable */
+ NFS_DEVICEID_NOCACHE, /* device may not be cached */
};
/* pnfs_dev.c */
unsigned long flags;
unsigned long timestamp_unavailable;
struct nfs4_deviceid deviceid;
+ struct rcu_head rcu;
atomic_t ref;
};
return NFS_SERVER(inode)->pnfs_curr_ld->flags & PNFS_READ_WHOLE_PAGE;
}
+static inline int
+pnfs_sync_inode(struct inode *inode, bool datasync)
+{
+ if (!pnfs_enabled_sb(NFS_SERVER(inode)))
+ return 0;
+ return NFS_SERVER(inode)->pnfs_curr_ld->sync(inode, datasync);
+}
+
static inline bool
pnfs_layoutcommit_outstanding(struct inode *inode)
{
return false;
}
+static inline int
+pnfs_sync_inode(struct inode *inode, bool datasync)
+{
+ return 0;
+}
+
static inline bool
pnfs_roc(struct inode *ino)
{
*/
d = server->pnfs_curr_ld->alloc_deviceid_node(server, pdev,
gfp_flags);
+ if (d && pdev->nocache)
+ set_bit(NFS_DEVICEID_NOCACHE, &d->flags);
out_free_pages:
for (i = 0; i < max_pages; i++)
rcu_read_lock();
d = _lookup_deviceid(server->pnfs_curr_ld, server->nfs_client, id,
hash);
- if (d != NULL)
- atomic_inc(&d->ref);
+ if (d != NULL && !atomic_inc_not_zero(&d->ref))
+ d = NULL;
rcu_read_unlock();
return d;
}
return;
}
hlist_del_init_rcu(&d->node);
+ clear_bit(NFS_DEVICEID_NOCACHE, &d->flags);
spin_unlock(&nfs4_deviceid_lock);
- synchronize_rcu();
/* balance the initial ref set in pnfs_insert_deviceid */
- if (atomic_dec_and_test(&d->ref))
- d->ld->free_deviceid_node(d);
+ nfs4_put_deviceid_node(d);
}
EXPORT_SYMBOL_GPL(nfs4_delete_deviceid);
bool
nfs4_put_deviceid_node(struct nfs4_deviceid_node *d)
{
+ if (test_bit(NFS_DEVICEID_NOCACHE, &d->flags)) {
+ if (atomic_add_unless(&d->ref, -1, 2))
+ return false;
+ nfs4_delete_deviceid(d->ld, d->nfs_client, &d->deviceid);
+ }
if (!atomic_dec_and_test(&d->ref))
return false;
d->ld->free_deviceid_node(d);
if (d->nfs_client == clp && atomic_read(&d->ref)) {
hlist_del_init_rcu(&d->node);
hlist_add_head(&d->tmpnode, &tmp);
+ clear_bit(NFS_DEVICEID_NOCACHE, &d->flags);
}
rcu_read_unlock();
spin_unlock(&nfs4_deviceid_lock);
if (hlist_empty(&tmp))
return;
- synchronize_rcu();
while (!hlist_empty(&tmp)) {
d = hlist_entry(tmp.first, struct nfs4_deviceid_node, tmpnode);
hlist_del(&d->tmpnode);
- if (atomic_dec_and_test(&d->ref))
- d->ld->free_deviceid_node(d);
+ nfs4_put_deviceid_node(d);
}
}
return(get_v3_ds_connect != NULL);
}
-void __exit nfs4_pnfs_v3_ds_connect_unload(void)
+void nfs4_pnfs_v3_ds_connect_unload(void)
{
if (get_v3_ds_connect) {
symbol_put(nfs3_set_ds_client);
nfs_request_add_commit_list(req, list, cinfo);
}
EXPORT_SYMBOL_GPL(pnfs_layout_mark_request_commit);
+
+int
+pnfs_nfs_generic_sync(struct inode *inode, bool datasync)
+{
+ if (datasync)
+ return 0;
+ return pnfs_layoutcommit_inode(inode, true);
+}
+EXPORT_SYMBOL_GPL(pnfs_nfs_generic_sync);
+
dprintk("NFS: nfs_readpage (%p %ld@%lu)\n",
page, PAGE_CACHE_SIZE, page_file_index(page));
nfs_inc_stats(inode, NFSIOS_VFSREADPAGE);
- nfs_inc_stats(inode, NFSIOS_READPAGES);
+ nfs_add_stats(inode, NFSIOS_READPAGES, 1);
/*
* Try to flush any pending writes to the file..
#include <linux/seq_file.h>
#include <linux/mount.h>
#include <linux/namei.h>
-#include <linux/nfs_idmap.h>
#include <linux/vfs.h>
#include <linux/inet.h>
#include <linux/in6.h>
data->version != nfss->nfs_client->rpc_ops->version ||
data->minorversion != nfss->nfs_client->cl_minorversion ||
data->retrans != nfss->client->cl_timeout->to_retries ||
- data->selected_flavor != nfss->client->cl_auth->au_flavor ||
+ !nfs_auth_info_match(&data->auth_info, nfss->client->cl_auth->au_flavor) ||
data->acregmin != nfss->acregmin / HZ ||
data->acregmax != nfss->acregmax / HZ ||
data->acdirmin != nfss->acdirmin / HZ ||
data->wsize = nfss->wsize;
data->retrans = nfss->client->cl_timeout->to_retries;
data->selected_flavor = nfss->client->cl_auth->au_flavor;
- data->auth_info = nfss->auth_info;
data->acregmin = nfss->acregmin / HZ;
data->acregmax = nfss->acregmax / HZ;
data->acdirmin = nfss->acdirmin / HZ;
int ret;
nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGE);
- nfs_inc_stats(inode, NFSIOS_WRITEPAGES);
+ nfs_add_stats(inode, NFSIOS_WRITEPAGES, 1);
nfs_pageio_cond_complete(pgio, page_file_index(page));
ret = nfs_page_async_flush(pgio, page, wbc->sync_mode == WB_SYNC_NONE);
*/
int nfs_wb_all(struct inode *inode)
{
- struct writeback_control wbc = {
- .sync_mode = WB_SYNC_ALL,
- .nr_to_write = LONG_MAX,
- .range_start = 0,
- .range_end = LLONG_MAX,
- };
int ret;
trace_nfs_writeback_inode_enter(inode);
- ret = sync_inode(inode, &wbc);
+ ret = filemap_write_and_wait(inode->i_mapping);
+ if (!ret) {
+ ret = nfs_commit_inode(inode, FLUSH_SYNC);
+ if (!ret)
+ pnfs_sync_inode(inode, true);
+ }
trace_nfs_writeback_inode_exit(inode, ret);
return ret;
* Try to write back everything synchronously (but check the
* return value!)
*/
+extern int nfs_sync_inode(struct inode *inode);
extern int nfs_wb_all(struct inode *inode);
extern int nfs_wb_page(struct inode *inode, struct page* page);
extern int nfs_wb_page_cancel(struct inode *inode, struct page* page);
struct nfs4_getdeviceinfo_args {
struct nfs4_sequence_args seq_args;
struct pnfs_device *pdev;
+ __u32 notify_types;
};
struct nfs4_getdeviceinfo_res {
struct nfs4_sequence_res seq_res;
struct pnfs_device *pdev;
+ __u32 notification;
};
struct nfs4_layoutcommit_args {
nfs4_stateid falloc_stateid;
u64 falloc_offset;
u64 falloc_length;
+ const u32 *falloc_bitmask;
};
struct nfs42_falloc_res {
struct nfs4_sequence_res seq_res;
unsigned int status;
+
+ struct nfs_fattr *falloc_fattr;
+ const struct nfs_server *falloc_server;
};
struct nfs42_seek_args {
(RPC_REPHDRSIZE + (2 + RPC_MAX_AUTH_SIZE/4))
/*
- * RFC1833/RFC3530 rpcbind (v3+) well-known netid's.
+ * Well-known netids. See:
+ *
+ * http://www.iana.org/assignments/rpc-netids/rpc-netids.xhtml
*/
#define RPCBIND_NETID_UDP "udp"
#define RPCBIND_NETID_TCP "tcp"
+#define RPCBIND_NETID_RDMA "rdma"
+#define RPCBIND_NETID_SCTP "sctp"
#define RPCBIND_NETID_UDP6 "udp6"
#define RPCBIND_NETID_TCP6 "tcp6"
+#define RPCBIND_NETID_RDMA6 "rdma6"
+#define RPCBIND_NETID_SCTP6 "sctp6"
#define RPCBIND_NETID_LOCAL "local"
/*
#ifndef _LINUX_SUNRPC_XPRTRDMA_H
#define _LINUX_SUNRPC_XPRTRDMA_H
-/*
- * rpcbind (v3+) RDMA netid.
- */
-#define RPCBIND_NETID_RDMA "rdma"
-
/*
* Constants. Max RPC/NFS header is big enough to account for
* additional marshaling buffers passed down by Linux client.
/*
- * include/linux/nfs_idmap.h
+ * include/uapi/linux/nfs_idmap.h
*
* UID and GID to name mapping for clients.
*
if (!task->tk_timeout)
return;
- dprintk("RPC: %5u setting alarm for %lu ms\n",
- task->tk_pid, task->tk_timeout * 1000 / HZ);
+ dprintk("RPC: %5u setting alarm for %u ms\n",
+ task->tk_pid, jiffies_to_msecs(task->tk_timeout));
task->u.tk_wait.expires = jiffies + task->tk_timeout;
if (list_empty(&queue->timer_list.list) || time_before(task->u.tk_wait.expires, queue->timer_list.expires))
xprt_clear_locked(xprt);
}
+static void xprt_task_clear_bytes_sent(struct rpc_task *task)
+{
+ if (task != NULL) {
+ struct rpc_rqst *req = task->tk_rqstp;
+ if (req != NULL)
+ req->rq_bytes_sent = 0;
+ }
+}
+
/**
* xprt_release_xprt - allow other requests to use a transport
* @xprt: transport with other tasks potentially waiting
void xprt_release_xprt(struct rpc_xprt *xprt, struct rpc_task *task)
{
if (xprt->snd_task == task) {
- if (task != NULL) {
- struct rpc_rqst *req = task->tk_rqstp;
- if (req != NULL)
- req->rq_bytes_sent = 0;
- }
+ xprt_task_clear_bytes_sent(task);
xprt_clear_locked(xprt);
__xprt_lock_write_next(xprt);
}
void xprt_release_xprt_cong(struct rpc_xprt *xprt, struct rpc_task *task)
{
if (xprt->snd_task == task) {
- if (task != NULL) {
- struct rpc_rqst *req = task->tk_rqstp;
- if (req != NULL)
- req->rq_bytes_sent = 0;
- }
+ xprt_task_clear_bytes_sent(task);
xprt_clear_locked(xprt);
__xprt_lock_write_next_cong(xprt);
}
goto out;
if (xprt->snd_task != task)
goto out;
+ xprt_task_clear_bytes_sent(task);
xprt->snd_task = cookie;
ret = true;
out:
obj-$(CONFIG_SUNRPC_XPRT_RDMA_CLIENT) += xprtrdma.o
-xprtrdma-y := transport.o rpc_rdma.o verbs.o
+xprtrdma-y := transport.o rpc_rdma.o verbs.o \
+ fmr_ops.o frwr_ops.o physical_ops.o
obj-$(CONFIG_SUNRPC_XPRT_RDMA_SERVER) += svcrdma.o
--- /dev/null
+/*
+ * Copyright (c) 2015 Oracle. All rights reserved.
+ * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved.
+ */
+
+/* Lightweight memory registration using Fast Memory Regions (FMR).
+ * Referred to sometimes as MTHCAFMR mode.
+ *
+ * FMR uses synchronous memory registration and deregistration.
+ * FMR registration is known to be fast, but FMR deregistration
+ * can take tens of usecs to complete.
+ */
+
+#include "xprt_rdma.h"
+
+#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
+# define RPCDBG_FACILITY RPCDBG_TRANS
+#endif
+
+/* Maximum scatter/gather per FMR */
+#define RPCRDMA_MAX_FMR_SGES (64)
+
+static int
+fmr_op_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep,
+ struct rpcrdma_create_data_internal *cdata)
+{
+ return 0;
+}
+
+/* FMR mode conveys up to 64 pages of payload per chunk segment.
+ */
+static size_t
+fmr_op_maxpages(struct rpcrdma_xprt *r_xprt)
+{
+ return min_t(unsigned int, RPCRDMA_MAX_DATA_SEGS,
+ rpcrdma_max_segments(r_xprt) * RPCRDMA_MAX_FMR_SGES);
+}
+
+static int
+fmr_op_init(struct rpcrdma_xprt *r_xprt)
+{
+ struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
+ int mr_access_flags = IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_READ;
+ struct ib_fmr_attr fmr_attr = {
+ .max_pages = RPCRDMA_MAX_FMR_SGES,
+ .max_maps = 1,
+ .page_shift = PAGE_SHIFT
+ };
+ struct ib_pd *pd = r_xprt->rx_ia.ri_pd;
+ struct rpcrdma_mw *r;
+ int i, rc;
+
+ INIT_LIST_HEAD(&buf->rb_mws);
+ INIT_LIST_HEAD(&buf->rb_all);
+
+ i = (buf->rb_max_requests + 1) * RPCRDMA_MAX_SEGS;
+ dprintk("RPC: %s: initializing %d FMRs\n", __func__, i);
+
+ while (i--) {
+ r = kzalloc(sizeof(*r), GFP_KERNEL);
+ if (!r)
+ return -ENOMEM;
+
+ r->r.fmr = ib_alloc_fmr(pd, mr_access_flags, &fmr_attr);
+ if (IS_ERR(r->r.fmr))
+ goto out_fmr_err;
+
+ list_add(&r->mw_list, &buf->rb_mws);
+ list_add(&r->mw_all, &buf->rb_all);
+ }
+ return 0;
+
+out_fmr_err:
+ rc = PTR_ERR(r->r.fmr);
+ dprintk("RPC: %s: ib_alloc_fmr status %i\n", __func__, rc);
+ kfree(r);
+ return rc;
+}
+
+/* Use the ib_map_phys_fmr() verb to register a memory region
+ * for remote access via RDMA READ or RDMA WRITE.
+ */
+static int
+fmr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg,
+ int nsegs, bool writing)
+{
+ struct rpcrdma_ia *ia = &r_xprt->rx_ia;
+ struct ib_device *device = ia->ri_id->device;
+ enum dma_data_direction direction = rpcrdma_data_dir(writing);
+ struct rpcrdma_mr_seg *seg1 = seg;
+ struct rpcrdma_mw *mw = seg1->rl_mw;
+ u64 physaddrs[RPCRDMA_MAX_DATA_SEGS];
+ int len, pageoff, i, rc;
+
+ pageoff = offset_in_page(seg1->mr_offset);
+ seg1->mr_offset -= pageoff; /* start of page */
+ seg1->mr_len += pageoff;
+ len = -pageoff;
+ if (nsegs > RPCRDMA_MAX_FMR_SGES)
+ nsegs = RPCRDMA_MAX_FMR_SGES;
+ for (i = 0; i < nsegs;) {
+ rpcrdma_map_one(device, seg, direction);
+ physaddrs[i] = seg->mr_dma;
+ len += seg->mr_len;
+ ++seg;
+ ++i;
+ /* Check for holes */
+ if ((i < nsegs && offset_in_page(seg->mr_offset)) ||
+ offset_in_page((seg-1)->mr_offset + (seg-1)->mr_len))
+ break;
+ }
+
+ rc = ib_map_phys_fmr(mw->r.fmr, physaddrs, i, seg1->mr_dma);
+ if (rc)
+ goto out_maperr;
+
+ seg1->mr_rkey = mw->r.fmr->rkey;
+ seg1->mr_base = seg1->mr_dma + pageoff;
+ seg1->mr_nsegs = i;
+ seg1->mr_len = len;
+ return i;
+
+out_maperr:
+ dprintk("RPC: %s: ib_map_phys_fmr %u@0x%llx+%i (%d) status %i\n",
+ __func__, len, (unsigned long long)seg1->mr_dma,
+ pageoff, i, rc);
+ while (i--)
+ rpcrdma_unmap_one(device, --seg);
+ return rc;
+}
+
+/* Use the ib_unmap_fmr() verb to prevent further remote
+ * access via RDMA READ or RDMA WRITE.
+ */
+static int
+fmr_op_unmap(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg)
+{
+ struct rpcrdma_ia *ia = &r_xprt->rx_ia;
+ struct rpcrdma_mr_seg *seg1 = seg;
+ struct ib_device *device;
+ int rc, nsegs = seg->mr_nsegs;
+ LIST_HEAD(l);
+
+ list_add(&seg1->rl_mw->r.fmr->list, &l);
+ rc = ib_unmap_fmr(&l);
+ read_lock(&ia->ri_qplock);
+ device = ia->ri_id->device;
+ while (seg1->mr_nsegs--)
+ rpcrdma_unmap_one(device, seg++);
+ read_unlock(&ia->ri_qplock);
+ if (rc)
+ goto out_err;
+ return nsegs;
+
+out_err:
+ dprintk("RPC: %s: ib_unmap_fmr status %i\n", __func__, rc);
+ return nsegs;
+}
+
+/* After a disconnect, unmap all FMRs.
+ *
+ * This is invoked only in the transport connect worker in order
+ * to serialize with rpcrdma_register_fmr_external().
+ */
+static void
+fmr_op_reset(struct rpcrdma_xprt *r_xprt)
+{
+ struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
+ struct rpcrdma_mw *r;
+ LIST_HEAD(list);
+ int rc;
+
+ list_for_each_entry(r, &buf->rb_all, mw_all)
+ list_add(&r->r.fmr->list, &list);
+
+ rc = ib_unmap_fmr(&list);
+ if (rc)
+ dprintk("RPC: %s: ib_unmap_fmr failed %i\n",
+ __func__, rc);
+}
+
+static void
+fmr_op_destroy(struct rpcrdma_buffer *buf)
+{
+ struct rpcrdma_mw *r;
+ int rc;
+
+ while (!list_empty(&buf->rb_all)) {
+ r = list_entry(buf->rb_all.next, struct rpcrdma_mw, mw_all);
+ list_del(&r->mw_all);
+ rc = ib_dealloc_fmr(r->r.fmr);
+ if (rc)
+ dprintk("RPC: %s: ib_dealloc_fmr failed %i\n",
+ __func__, rc);
+ kfree(r);
+ }
+}
+
+const struct rpcrdma_memreg_ops rpcrdma_fmr_memreg_ops = {
+ .ro_map = fmr_op_map,
+ .ro_unmap = fmr_op_unmap,
+ .ro_open = fmr_op_open,
+ .ro_maxpages = fmr_op_maxpages,
+ .ro_init = fmr_op_init,
+ .ro_reset = fmr_op_reset,
+ .ro_destroy = fmr_op_destroy,
+ .ro_displayname = "fmr",
+};
--- /dev/null
+/*
+ * Copyright (c) 2015 Oracle. All rights reserved.
+ * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved.
+ */
+
+/* Lightweight memory registration using Fast Registration Work
+ * Requests (FRWR). Also referred to sometimes as FRMR mode.
+ *
+ * FRWR features ordered asynchronous registration and deregistration
+ * of arbitrarily sized memory regions. This is the fastest and safest
+ * but most complex memory registration mode.
+ */
+
+#include "xprt_rdma.h"
+
+#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
+# define RPCDBG_FACILITY RPCDBG_TRANS
+#endif
+
+static int
+__frwr_init(struct rpcrdma_mw *r, struct ib_pd *pd, struct ib_device *device,
+ unsigned int depth)
+{
+ struct rpcrdma_frmr *f = &r->r.frmr;
+ int rc;
+
+ f->fr_mr = ib_alloc_fast_reg_mr(pd, depth);
+ if (IS_ERR(f->fr_mr))
+ goto out_mr_err;
+ f->fr_pgl = ib_alloc_fast_reg_page_list(device, depth);
+ if (IS_ERR(f->fr_pgl))
+ goto out_list_err;
+ return 0;
+
+out_mr_err:
+ rc = PTR_ERR(f->fr_mr);
+ dprintk("RPC: %s: ib_alloc_fast_reg_mr status %i\n",
+ __func__, rc);
+ return rc;
+
+out_list_err:
+ rc = PTR_ERR(f->fr_pgl);
+ dprintk("RPC: %s: ib_alloc_fast_reg_page_list status %i\n",
+ __func__, rc);
+ ib_dereg_mr(f->fr_mr);
+ return rc;
+}
+
+static void
+__frwr_release(struct rpcrdma_mw *r)
+{
+ int rc;
+
+ rc = ib_dereg_mr(r->r.frmr.fr_mr);
+ if (rc)
+ dprintk("RPC: %s: ib_dereg_mr status %i\n",
+ __func__, rc);
+ ib_free_fast_reg_page_list(r->r.frmr.fr_pgl);
+}
+
+static int
+frwr_op_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep,
+ struct rpcrdma_create_data_internal *cdata)
+{
+ struct ib_device_attr *devattr = &ia->ri_devattr;
+ int depth, delta;
+
+ ia->ri_max_frmr_depth =
+ min_t(unsigned int, RPCRDMA_MAX_DATA_SEGS,
+ devattr->max_fast_reg_page_list_len);
+ dprintk("RPC: %s: device's max FR page list len = %u\n",
+ __func__, ia->ri_max_frmr_depth);
+
+ /* Add room for frmr register and invalidate WRs.
+ * 1. FRMR reg WR for head
+ * 2. FRMR invalidate WR for head
+ * 3. N FRMR reg WRs for pagelist
+ * 4. N FRMR invalidate WRs for pagelist
+ * 5. FRMR reg WR for tail
+ * 6. FRMR invalidate WR for tail
+ * 7. The RDMA_SEND WR
+ */
+ depth = 7;
+
+ /* Calculate N if the device max FRMR depth is smaller than
+ * RPCRDMA_MAX_DATA_SEGS.
+ */
+ if (ia->ri_max_frmr_depth < RPCRDMA_MAX_DATA_SEGS) {
+ delta = RPCRDMA_MAX_DATA_SEGS - ia->ri_max_frmr_depth;
+ do {
+ depth += 2; /* FRMR reg + invalidate */
+ delta -= ia->ri_max_frmr_depth;
+ } while (delta > 0);
+ }
+
+ ep->rep_attr.cap.max_send_wr *= depth;
+ if (ep->rep_attr.cap.max_send_wr > devattr->max_qp_wr) {
+ cdata->max_requests = devattr->max_qp_wr / depth;
+ if (!cdata->max_requests)
+ return -EINVAL;
+ ep->rep_attr.cap.max_send_wr = cdata->max_requests *
+ depth;
+ }
+
+ return 0;
+}
+
+/* FRWR mode conveys a list of pages per chunk segment. The
+ * maximum length of that list is the FRWR page list depth.
+ */
+static size_t
+frwr_op_maxpages(struct rpcrdma_xprt *r_xprt)
+{
+ struct rpcrdma_ia *ia = &r_xprt->rx_ia;
+
+ return min_t(unsigned int, RPCRDMA_MAX_DATA_SEGS,
+ rpcrdma_max_segments(r_xprt) * ia->ri_max_frmr_depth);
+}
+
+/* If FAST_REG or LOCAL_INV failed, indicate the frmr needs to be reset. */
+static void
+frwr_sendcompletion(struct ib_wc *wc)
+{
+ struct rpcrdma_mw *r;
+
+ if (likely(wc->status == IB_WC_SUCCESS))
+ return;
+
+ /* WARNING: Only wr_id and status are reliable at this point */
+ r = (struct rpcrdma_mw *)(unsigned long)wc->wr_id;
+ dprintk("RPC: %s: frmr %p (stale), status %d\n",
+ __func__, r, wc->status);
+ r->r.frmr.fr_state = FRMR_IS_STALE;
+}
+
+static int
+frwr_op_init(struct rpcrdma_xprt *r_xprt)
+{
+ struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
+ struct ib_device *device = r_xprt->rx_ia.ri_id->device;
+ unsigned int depth = r_xprt->rx_ia.ri_max_frmr_depth;
+ struct ib_pd *pd = r_xprt->rx_ia.ri_pd;
+ int i;
+
+ INIT_LIST_HEAD(&buf->rb_mws);
+ INIT_LIST_HEAD(&buf->rb_all);
+
+ i = (buf->rb_max_requests + 1) * RPCRDMA_MAX_SEGS;
+ dprintk("RPC: %s: initializing %d FRMRs\n", __func__, i);
+
+ while (i--) {
+ struct rpcrdma_mw *r;
+ int rc;
+
+ r = kzalloc(sizeof(*r), GFP_KERNEL);
+ if (!r)
+ return -ENOMEM;
+
+ rc = __frwr_init(r, pd, device, depth);
+ if (rc) {
+ kfree(r);
+ return rc;
+ }
+
+ list_add(&r->mw_list, &buf->rb_mws);
+ list_add(&r->mw_all, &buf->rb_all);
+ r->mw_sendcompletion = frwr_sendcompletion;
+ }
+
+ return 0;
+}
+
+/* Post a FAST_REG Work Request to register a memory region
+ * for remote access via RDMA READ or RDMA WRITE.
+ */
+static int
+frwr_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg,
+ int nsegs, bool writing)
+{
+ struct rpcrdma_ia *ia = &r_xprt->rx_ia;
+ struct ib_device *device = ia->ri_id->device;
+ enum dma_data_direction direction = rpcrdma_data_dir(writing);
+ struct rpcrdma_mr_seg *seg1 = seg;
+ struct rpcrdma_mw *mw = seg1->rl_mw;
+ struct rpcrdma_frmr *frmr = &mw->r.frmr;
+ struct ib_mr *mr = frmr->fr_mr;
+ struct ib_send_wr fastreg_wr, *bad_wr;
+ u8 key;
+ int len, pageoff;
+ int i, rc;
+ int seg_len;
+ u64 pa;
+ int page_no;
+
+ pageoff = offset_in_page(seg1->mr_offset);
+ seg1->mr_offset -= pageoff; /* start of page */
+ seg1->mr_len += pageoff;
+ len = -pageoff;
+ if (nsegs > ia->ri_max_frmr_depth)
+ nsegs = ia->ri_max_frmr_depth;
+ for (page_no = i = 0; i < nsegs;) {
+ rpcrdma_map_one(device, seg, direction);
+ pa = seg->mr_dma;
+ for (seg_len = seg->mr_len; seg_len > 0; seg_len -= PAGE_SIZE) {
+ frmr->fr_pgl->page_list[page_no++] = pa;
+ pa += PAGE_SIZE;
+ }
+ len += seg->mr_len;
+ ++seg;
+ ++i;
+ /* Check for holes */
+ if ((i < nsegs && offset_in_page(seg->mr_offset)) ||
+ offset_in_page((seg-1)->mr_offset + (seg-1)->mr_len))
+ break;
+ }
+ dprintk("RPC: %s: Using frmr %p to map %d segments (%d bytes)\n",
+ __func__, mw, i, len);
+
+ frmr->fr_state = FRMR_IS_VALID;
+
+ memset(&fastreg_wr, 0, sizeof(fastreg_wr));
+ fastreg_wr.wr_id = (unsigned long)(void *)mw;
+ fastreg_wr.opcode = IB_WR_FAST_REG_MR;
+ fastreg_wr.wr.fast_reg.iova_start = seg1->mr_dma + pageoff;
+ fastreg_wr.wr.fast_reg.page_list = frmr->fr_pgl;
+ fastreg_wr.wr.fast_reg.page_shift = PAGE_SHIFT;
+ fastreg_wr.wr.fast_reg.page_list_len = page_no;
+ fastreg_wr.wr.fast_reg.length = len;
+ fastreg_wr.wr.fast_reg.access_flags = writing ?
+ IB_ACCESS_REMOTE_WRITE | IB_ACCESS_LOCAL_WRITE :
+ IB_ACCESS_REMOTE_READ;
+ key = (u8)(mr->rkey & 0x000000FF);
+ ib_update_fast_reg_key(mr, ++key);
+ fastreg_wr.wr.fast_reg.rkey = mr->rkey;
+
+ DECR_CQCOUNT(&r_xprt->rx_ep);
+ rc = ib_post_send(ia->ri_id->qp, &fastreg_wr, &bad_wr);
+ if (rc)
+ goto out_senderr;
+
+ seg1->mr_rkey = mr->rkey;
+ seg1->mr_base = seg1->mr_dma + pageoff;
+ seg1->mr_nsegs = i;
+ seg1->mr_len = len;
+ return i;
+
+out_senderr:
+ dprintk("RPC: %s: ib_post_send status %i\n", __func__, rc);
+ ib_update_fast_reg_key(mr, --key);
+ frmr->fr_state = FRMR_IS_INVALID;
+ while (i--)
+ rpcrdma_unmap_one(device, --seg);
+ return rc;
+}
+
+/* Post a LOCAL_INV Work Request to prevent further remote access
+ * via RDMA READ or RDMA WRITE.
+ */
+static int
+frwr_op_unmap(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg)
+{
+ struct rpcrdma_mr_seg *seg1 = seg;
+ struct rpcrdma_ia *ia = &r_xprt->rx_ia;
+ struct ib_send_wr invalidate_wr, *bad_wr;
+ int rc, nsegs = seg->mr_nsegs;
+ struct ib_device *device;
+
+ seg1->rl_mw->r.frmr.fr_state = FRMR_IS_INVALID;
+
+ memset(&invalidate_wr, 0, sizeof(invalidate_wr));
+ invalidate_wr.wr_id = (unsigned long)(void *)seg1->rl_mw;
+ invalidate_wr.opcode = IB_WR_LOCAL_INV;
+ invalidate_wr.ex.invalidate_rkey = seg1->rl_mw->r.frmr.fr_mr->rkey;
+ DECR_CQCOUNT(&r_xprt->rx_ep);
+
+ read_lock(&ia->ri_qplock);
+ device = ia->ri_id->device;
+ while (seg1->mr_nsegs--)
+ rpcrdma_unmap_one(device, seg++);
+ rc = ib_post_send(ia->ri_id->qp, &invalidate_wr, &bad_wr);
+ read_unlock(&ia->ri_qplock);
+ if (rc)
+ goto out_err;
+ return nsegs;
+
+out_err:
+ /* Force rpcrdma_buffer_get() to retry */
+ seg1->rl_mw->r.frmr.fr_state = FRMR_IS_STALE;
+ dprintk("RPC: %s: ib_post_send status %i\n", __func__, rc);
+ return nsegs;
+}
+
+/* After a disconnect, a flushed FAST_REG_MR can leave an FRMR in
+ * an unusable state. Find FRMRs in this state and dereg / reg
+ * each. FRMRs that are VALID and attached to an rpcrdma_req are
+ * also torn down.
+ *
+ * This gives all in-use FRMRs a fresh rkey and leaves them INVALID.
+ *
+ * This is invoked only in the transport connect worker in order
+ * to serialize with rpcrdma_register_frmr_external().
+ */
+static void
+frwr_op_reset(struct rpcrdma_xprt *r_xprt)
+{
+ struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
+ struct ib_device *device = r_xprt->rx_ia.ri_id->device;
+ unsigned int depth = r_xprt->rx_ia.ri_max_frmr_depth;
+ struct ib_pd *pd = r_xprt->rx_ia.ri_pd;
+ struct rpcrdma_mw *r;
+ int rc;
+
+ list_for_each_entry(r, &buf->rb_all, mw_all) {
+ if (r->r.frmr.fr_state == FRMR_IS_INVALID)
+ continue;
+
+ __frwr_release(r);
+ rc = __frwr_init(r, pd, device, depth);
+ if (rc) {
+ dprintk("RPC: %s: mw %p left %s\n",
+ __func__, r,
+ (r->r.frmr.fr_state == FRMR_IS_STALE ?
+ "stale" : "valid"));
+ continue;
+ }
+
+ r->r.frmr.fr_state = FRMR_IS_INVALID;
+ }
+}
+
+static void
+frwr_op_destroy(struct rpcrdma_buffer *buf)
+{
+ struct rpcrdma_mw *r;
+
+ while (!list_empty(&buf->rb_all)) {
+ r = list_entry(buf->rb_all.next, struct rpcrdma_mw, mw_all);
+ list_del(&r->mw_all);
+ __frwr_release(r);
+ kfree(r);
+ }
+}
+
+const struct rpcrdma_memreg_ops rpcrdma_frwr_memreg_ops = {
+ .ro_map = frwr_op_map,
+ .ro_unmap = frwr_op_unmap,
+ .ro_open = frwr_op_open,
+ .ro_maxpages = frwr_op_maxpages,
+ .ro_init = frwr_op_init,
+ .ro_reset = frwr_op_reset,
+ .ro_destroy = frwr_op_destroy,
+ .ro_displayname = "frwr",
+};
--- /dev/null
+/*
+ * Copyright (c) 2015 Oracle. All rights reserved.
+ * Copyright (c) 2003-2007 Network Appliance, Inc. All rights reserved.
+ */
+
+/* No-op chunk preparation. All client memory is pre-registered.
+ * Sometimes referred to as ALLPHYSICAL mode.
+ *
+ * Physical registration is simple because all client memory is
+ * pre-registered and never deregistered. This mode is good for
+ * adapter bring up, but is considered not safe: the server is
+ * trusted not to abuse its access to client memory not involved
+ * in RDMA I/O.
+ */
+
+#include "xprt_rdma.h"
+
+#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
+# define RPCDBG_FACILITY RPCDBG_TRANS
+#endif
+
+static int
+physical_op_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep,
+ struct rpcrdma_create_data_internal *cdata)
+{
+ return 0;
+}
+
+/* PHYSICAL memory registration conveys one page per chunk segment.
+ */
+static size_t
+physical_op_maxpages(struct rpcrdma_xprt *r_xprt)
+{
+ return min_t(unsigned int, RPCRDMA_MAX_DATA_SEGS,
+ rpcrdma_max_segments(r_xprt));
+}
+
+static int
+physical_op_init(struct rpcrdma_xprt *r_xprt)
+{
+ return 0;
+}
+
+/* The client's physical memory is already exposed for
+ * remote access via RDMA READ or RDMA WRITE.
+ */
+static int
+physical_op_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg,
+ int nsegs, bool writing)
+{
+ struct rpcrdma_ia *ia = &r_xprt->rx_ia;
+
+ rpcrdma_map_one(ia->ri_id->device, seg,
+ rpcrdma_data_dir(writing));
+ seg->mr_rkey = ia->ri_bind_mem->rkey;
+ seg->mr_base = seg->mr_dma;
+ seg->mr_nsegs = 1;
+ return 1;
+}
+
+/* Unmap a memory region, but leave it registered.
+ */
+static int
+physical_op_unmap(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr_seg *seg)
+{
+ struct rpcrdma_ia *ia = &r_xprt->rx_ia;
+
+ read_lock(&ia->ri_qplock);
+ rpcrdma_unmap_one(ia->ri_id->device, seg);
+ read_unlock(&ia->ri_qplock);
+
+ return 1;
+}
+
+static void
+physical_op_reset(struct rpcrdma_xprt *r_xprt)
+{
+}
+
+static void
+physical_op_destroy(struct rpcrdma_buffer *buf)
+{
+}
+
+const struct rpcrdma_memreg_ops rpcrdma_physical_memreg_ops = {
+ .ro_map = physical_op_map,
+ .ro_unmap = physical_op_unmap,
+ .ro_open = physical_op_open,
+ .ro_maxpages = physical_op_maxpages,
+ .ro_init = physical_op_init,
+ .ro_reset = physical_op_reset,
+ .ro_destroy = physical_op_destroy,
+ .ro_displayname = "physical",
+};
# define RPCDBG_FACILITY RPCDBG_TRANS
#endif
+enum rpcrdma_chunktype {
+ rpcrdma_noch = 0,
+ rpcrdma_readch,
+ rpcrdma_areadch,
+ rpcrdma_writech,
+ rpcrdma_replych
+};
+
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
static const char transfertypes[][12] = {
"pure inline", /* no chunks */
struct rpcrdma_write_array *warray = NULL;
struct rpcrdma_write_chunk *cur_wchunk = NULL;
__be32 *iptr = headerp->rm_body.rm_chunks;
+ int (*map)(struct rpcrdma_xprt *, struct rpcrdma_mr_seg *, int, bool);
if (type == rpcrdma_readch || type == rpcrdma_areadch) {
/* a read chunk - server will RDMA Read our memory */
if (nsegs < 0)
return nsegs;
+ map = r_xprt->rx_ia.ri_ops->ro_map;
do {
- n = rpcrdma_register_external(seg, nsegs,
- cur_wchunk != NULL, r_xprt);
+ n = map(r_xprt, seg, nsegs, cur_wchunk != NULL);
if (n <= 0)
goto out;
if (cur_rchunk) { /* read */
return (unsigned char *)iptr - (unsigned char *)headerp;
out:
- if (r_xprt->rx_ia.ri_memreg_strategy != RPCRDMA_FRMR) {
- for (pos = 0; nchunks--;)
- pos += rpcrdma_deregister_external(
- &req->rl_segments[pos], r_xprt);
- }
- return n;
-}
+ if (r_xprt->rx_ia.ri_memreg_strategy == RPCRDMA_FRMR)
+ return n;
-/*
- * Marshal chunks. This routine returns the header length
- * consumed by marshaling.
- *
- * Returns positive RPC/RDMA header size, or negative errno.
- */
-
-ssize_t
-rpcrdma_marshal_chunks(struct rpc_rqst *rqst, ssize_t result)
-{
- struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
- struct rpcrdma_msg *headerp = rdmab_to_msg(req->rl_rdmabuf);
-
- if (req->rl_rtype != rpcrdma_noch)
- result = rpcrdma_create_chunks(rqst, &rqst->rq_snd_buf,
- headerp, req->rl_rtype);
- else if (req->rl_wtype != rpcrdma_noch)
- result = rpcrdma_create_chunks(rqst, &rqst->rq_rcv_buf,
- headerp, req->rl_wtype);
- return result;
+ for (pos = 0; nchunks--;)
+ pos += r_xprt->rx_ia.ri_ops->ro_unmap(r_xprt,
+ &req->rl_segments[pos]);
+ return n;
}
/*
char *base;
size_t rpclen, padlen;
ssize_t hdrlen;
+ enum rpcrdma_chunktype rtype, wtype;
struct rpcrdma_msg *headerp;
/*
* into pages; otherwise use reply chunks.
*/
if (rqst->rq_rcv_buf.buflen <= RPCRDMA_INLINE_READ_THRESHOLD(rqst))
- req->rl_wtype = rpcrdma_noch;
+ wtype = rpcrdma_noch;
else if (rqst->rq_rcv_buf.page_len == 0)
- req->rl_wtype = rpcrdma_replych;
+ wtype = rpcrdma_replych;
else if (rqst->rq_rcv_buf.flags & XDRBUF_READ)
- req->rl_wtype = rpcrdma_writech;
+ wtype = rpcrdma_writech;
else
- req->rl_wtype = rpcrdma_replych;
+ wtype = rpcrdma_replych;
/*
* Chunks needed for arguments?
* TBD check NFSv4 setacl
*/
if (rqst->rq_snd_buf.len <= RPCRDMA_INLINE_WRITE_THRESHOLD(rqst))
- req->rl_rtype = rpcrdma_noch;
+ rtype = rpcrdma_noch;
else if (rqst->rq_snd_buf.page_len == 0)
- req->rl_rtype = rpcrdma_areadch;
+ rtype = rpcrdma_areadch;
else
- req->rl_rtype = rpcrdma_readch;
+ rtype = rpcrdma_readch;
/* The following simplification is not true forever */
- if (req->rl_rtype != rpcrdma_noch && req->rl_wtype == rpcrdma_replych)
- req->rl_wtype = rpcrdma_noch;
- if (req->rl_rtype != rpcrdma_noch && req->rl_wtype != rpcrdma_noch) {
+ if (rtype != rpcrdma_noch && wtype == rpcrdma_replych)
+ wtype = rpcrdma_noch;
+ if (rtype != rpcrdma_noch && wtype != rpcrdma_noch) {
dprintk("RPC: %s: cannot marshal multiple chunk lists\n",
__func__);
return -EIO;
* When padding is in use and applies to the transfer, insert
* it and change the message type.
*/
- if (req->rl_rtype == rpcrdma_noch) {
+ if (rtype == rpcrdma_noch) {
padlen = rpcrdma_inline_pullup(rqst,
RPCRDMA_INLINE_PAD_VALUE(rqst));
headerp->rm_body.rm_padded.rm_pempty[1] = xdr_zero;
headerp->rm_body.rm_padded.rm_pempty[2] = xdr_zero;
hdrlen += 2 * sizeof(u32); /* extra words in padhdr */
- if (req->rl_wtype != rpcrdma_noch) {
+ if (wtype != rpcrdma_noch) {
dprintk("RPC: %s: invalid chunk list\n",
__func__);
return -EIO;
* on receive. Therefore, we request a reply chunk
* for non-writes wherever feasible and efficient.
*/
- if (req->rl_wtype == rpcrdma_noch)
- req->rl_wtype = rpcrdma_replych;
+ if (wtype == rpcrdma_noch)
+ wtype = rpcrdma_replych;
}
}
- hdrlen = rpcrdma_marshal_chunks(rqst, hdrlen);
+ if (rtype != rpcrdma_noch) {
+ hdrlen = rpcrdma_create_chunks(rqst, &rqst->rq_snd_buf,
+ headerp, rtype);
+ wtype = rtype; /* simplify dprintk */
+
+ } else if (wtype != rpcrdma_noch) {
+ hdrlen = rpcrdma_create_chunks(rqst, &rqst->rq_rcv_buf,
+ headerp, wtype);
+ }
if (hdrlen < 0)
return hdrlen;
dprintk("RPC: %s: %s: hdrlen %zd rpclen %zd padlen %zd"
" headerp 0x%p base 0x%p lkey 0x%x\n",
- __func__, transfertypes[req->rl_wtype], hdrlen, rpclen, padlen,
+ __func__, transfertypes[wtype], hdrlen, rpclen, padlen,
headerp, base, rdmab_lkey(req->rl_rdmabuf));
/*
static struct rpc_xprt_ops xprt_rdma_procs; /* forward reference */
+static void
+xprt_rdma_format_addresses4(struct rpc_xprt *xprt, struct sockaddr *sap)
+{
+ struct sockaddr_in *sin = (struct sockaddr_in *)sap;
+ char buf[20];
+
+ snprintf(buf, sizeof(buf), "%08x", ntohl(sin->sin_addr.s_addr));
+ xprt->address_strings[RPC_DISPLAY_HEX_ADDR] = kstrdup(buf, GFP_KERNEL);
+
+ xprt->address_strings[RPC_DISPLAY_NETID] = RPCBIND_NETID_RDMA;
+}
+
+static void
+xprt_rdma_format_addresses6(struct rpc_xprt *xprt, struct sockaddr *sap)
+{
+ struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap;
+ char buf[40];
+
+ snprintf(buf, sizeof(buf), "%pi6", &sin6->sin6_addr);
+ xprt->address_strings[RPC_DISPLAY_HEX_ADDR] = kstrdup(buf, GFP_KERNEL);
+
+ xprt->address_strings[RPC_DISPLAY_NETID] = RPCBIND_NETID_RDMA6;
+}
+
static void
xprt_rdma_format_addresses(struct rpc_xprt *xprt)
{
struct sockaddr *sap = (struct sockaddr *)
&rpcx_to_rdmad(xprt).addr;
- struct sockaddr_in *sin = (struct sockaddr_in *)sap;
- char buf[64];
+ char buf[128];
+
+ switch (sap->sa_family) {
+ case AF_INET:
+ xprt_rdma_format_addresses4(xprt, sap);
+ break;
+ case AF_INET6:
+ xprt_rdma_format_addresses6(xprt, sap);
+ break;
+ default:
+ pr_err("rpcrdma: Unrecognized address family\n");
+ return;
+ }
(void)rpc_ntop(sap, buf, sizeof(buf));
xprt->address_strings[RPC_DISPLAY_ADDR] = kstrdup(buf, GFP_KERNEL);
snprintf(buf, sizeof(buf), "%u", rpc_get_port(sap));
xprt->address_strings[RPC_DISPLAY_PORT] = kstrdup(buf, GFP_KERNEL);
- xprt->address_strings[RPC_DISPLAY_PROTO] = "rdma";
-
- snprintf(buf, sizeof(buf), "%08x", ntohl(sin->sin_addr.s_addr));
- xprt->address_strings[RPC_DISPLAY_HEX_ADDR] = kstrdup(buf, GFP_KERNEL);
-
snprintf(buf, sizeof(buf), "%4hx", rpc_get_port(sap));
xprt->address_strings[RPC_DISPLAY_HEX_PORT] = kstrdup(buf, GFP_KERNEL);
- /* netid */
- xprt->address_strings[RPC_DISPLAY_NETID] = "rdma";
+ xprt->address_strings[RPC_DISPLAY_PROTO] = "rdma";
}
static void
xprt_rdma_connect_worker);
xprt_rdma_format_addresses(xprt);
- xprt->max_payload = rpcrdma_max_payload(new_xprt);
+ xprt->max_payload = new_xprt->rx_ia.ri_ops->ro_maxpages(new_xprt);
+ if (xprt->max_payload == 0)
+ goto out4;
+ xprt->max_payload <<= PAGE_SHIFT;
dprintk("RPC: %s: transport data payload maximum: %zu bytes\n",
__func__, xprt->max_payload);
for (i = 0; req->rl_nchunks;) {
--req->rl_nchunks;
- i += rpcrdma_deregister_external(
- &req->rl_segments[i], r_xprt);
+ i += r_xprt->rx_ia.ri_ops->ro_unmap(r_xprt,
+ &req->rl_segments[i]);
}
rpcrdma_buffer_put(req);
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
int rc = 0;
- if (req->rl_niovs == 0)
- rc = rpcrdma_marshal_req(rqst);
- else if (r_xprt->rx_ia.ri_memreg_strategy != RPCRDMA_ALLPHYSICAL)
- rc = rpcrdma_marshal_chunks(rqst, 0);
+ rc = rpcrdma_marshal_req(rqst);
if (rc < 0)
goto failed_marshal;
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/prefetch.h>
+#include <linux/sunrpc/addr.h>
#include <asm/bitops.h>
#include "xprt_rdma.h"
# define RPCDBG_FACILITY RPCDBG_TRANS
#endif
-static void rpcrdma_reset_frmrs(struct rpcrdma_ia *);
-static void rpcrdma_reset_fmrs(struct rpcrdma_ia *);
-
/*
* internal functions
*/
"remote access error",
"remote operation error",
"transport retry counter exceeded",
- "RNR retrycounter exceeded",
+ "RNR retry counter exceeded",
"local RDD violation error",
"remove invalid RD request",
"operation aborted",
static void
rpcrdma_sendcq_process_wc(struct ib_wc *wc)
{
- if (likely(wc->status == IB_WC_SUCCESS))
- return;
-
/* WARNING: Only wr_id and status are reliable at this point */
- if (wc->wr_id == 0ULL) {
- if (wc->status != IB_WC_WR_FLUSH_ERR)
+ if (wc->wr_id == RPCRDMA_IGNORE_COMPLETION) {
+ if (wc->status != IB_WC_SUCCESS &&
+ wc->status != IB_WC_WR_FLUSH_ERR)
pr_err("RPC: %s: SEND: %s\n",
__func__, COMPLETION_MSG(wc->status));
} else {
struct rpcrdma_mw *r;
r = (struct rpcrdma_mw *)(unsigned long)wc->wr_id;
- r->r.frmr.fr_state = FRMR_IS_STALE;
- pr_err("RPC: %s: frmr %p (stale): %s\n",
- __func__, r, COMPLETION_MSG(wc->status));
+ r->mw_sendcompletion(wc);
}
}
struct rpcrdma_ia *ia = &xprt->rx_ia;
struct rpcrdma_ep *ep = &xprt->rx_ep;
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
- struct sockaddr_in *addr = (struct sockaddr_in *) &ep->rep_remote_addr;
+ struct sockaddr *sap = (struct sockaddr *)&ep->rep_remote_addr;
#endif
struct ib_qp_attr *attr = &ia->ri_qp_attr;
struct ib_qp_init_attr *iattr = &ia->ri_qp_init_attr;
wake_up_all(&ep->rep_connect_wait);
/*FALLTHROUGH*/
default:
- dprintk("RPC: %s: %pI4:%u (ep 0x%p): %s\n",
- __func__, &addr->sin_addr.s_addr,
- ntohs(addr->sin_port), ep,
+ dprintk("RPC: %s: %pIS:%u (ep 0x%p): %s\n",
+ __func__, sap, rpc_get_port(sap), ep,
CONNECTION_MSG(event->event));
break;
}
if (connstate == 1) {
int ird = attr->max_dest_rd_atomic;
int tird = ep->rep_remote_cma.responder_resources;
- printk(KERN_INFO "rpcrdma: connection to %pI4:%u "
- "on %s, memreg %d slots %d ird %d%s\n",
- &addr->sin_addr.s_addr,
- ntohs(addr->sin_port),
+
+ pr_info("rpcrdma: connection to %pIS:%u on %s, memreg '%s', %d credits, %d responders%s\n",
+ sap, rpc_get_port(sap),
ia->ri_id->device->name,
- ia->ri_memreg_strategy,
+ ia->ri_ops->ro_displayname,
xprt->rx_buf.rb_max_requests,
ird, ird < 4 && ird < tird / 2 ? " (low!)" : "");
} else if (connstate < 0) {
- printk(KERN_INFO "rpcrdma: connection to %pI4:%u closed (%d)\n",
- &addr->sin_addr.s_addr,
- ntohs(addr->sin_port),
- connstate);
+ pr_info("rpcrdma: connection to %pIS:%u closed (%d)\n",
+ sap, rpc_get_port(sap), connstate);
}
#endif
if (memreg == RPCRDMA_FRMR) {
/* Requires both frmr reg and local dma lkey */
- if ((devattr->device_cap_flags &
+ if (((devattr->device_cap_flags &
(IB_DEVICE_MEM_MGT_EXTENSIONS|IB_DEVICE_LOCAL_DMA_LKEY)) !=
- (IB_DEVICE_MEM_MGT_EXTENSIONS|IB_DEVICE_LOCAL_DMA_LKEY)) {
+ (IB_DEVICE_MEM_MGT_EXTENSIONS|IB_DEVICE_LOCAL_DMA_LKEY)) ||
+ (devattr->max_fast_reg_page_list_len == 0)) {
dprintk("RPC: %s: FRMR registration "
"not supported by HCA\n", __func__);
memreg = RPCRDMA_MTHCAFMR;
- } else {
- /* Mind the ia limit on FRMR page list depth */
- ia->ri_max_frmr_depth = min_t(unsigned int,
- RPCRDMA_MAX_DATA_SEGS,
- devattr->max_fast_reg_page_list_len);
}
}
if (memreg == RPCRDMA_MTHCAFMR) {
*/
switch (memreg) {
case RPCRDMA_FRMR:
+ ia->ri_ops = &rpcrdma_frwr_memreg_ops;
break;
case RPCRDMA_ALLPHYSICAL:
+ ia->ri_ops = &rpcrdma_physical_memreg_ops;
mem_priv = IB_ACCESS_LOCAL_WRITE |
IB_ACCESS_REMOTE_WRITE |
IB_ACCESS_REMOTE_READ;
goto register_setup;
case RPCRDMA_MTHCAFMR:
+ ia->ri_ops = &rpcrdma_fmr_memreg_ops;
if (ia->ri_have_dma_lkey)
break;
mem_priv = IB_ACCESS_LOCAL_WRITE;
rc = -ENOMEM;
goto out3;
}
- dprintk("RPC: %s: memory registration strategy is %d\n",
- __func__, memreg);
+ dprintk("RPC: %s: memory registration strategy is '%s'\n",
+ __func__, ia->ri_ops->ro_displayname);
/* Else will do memory reg/dereg for each chunk */
ia->ri_memreg_strategy = memreg;
ep->rep_attr.event_handler = rpcrdma_qp_async_error_upcall;
ep->rep_attr.qp_context = ep;
- /* send_cq and recv_cq initialized below */
ep->rep_attr.srq = NULL;
ep->rep_attr.cap.max_send_wr = cdata->max_requests;
- switch (ia->ri_memreg_strategy) {
- case RPCRDMA_FRMR: {
- int depth = 7;
-
- /* Add room for frmr register and invalidate WRs.
- * 1. FRMR reg WR for head
- * 2. FRMR invalidate WR for head
- * 3. N FRMR reg WRs for pagelist
- * 4. N FRMR invalidate WRs for pagelist
- * 5. FRMR reg WR for tail
- * 6. FRMR invalidate WR for tail
- * 7. The RDMA_SEND WR
- */
-
- /* Calculate N if the device max FRMR depth is smaller than
- * RPCRDMA_MAX_DATA_SEGS.
- */
- if (ia->ri_max_frmr_depth < RPCRDMA_MAX_DATA_SEGS) {
- int delta = RPCRDMA_MAX_DATA_SEGS -
- ia->ri_max_frmr_depth;
-
- do {
- depth += 2; /* FRMR reg + invalidate */
- delta -= ia->ri_max_frmr_depth;
- } while (delta > 0);
-
- }
- ep->rep_attr.cap.max_send_wr *= depth;
- if (ep->rep_attr.cap.max_send_wr > devattr->max_qp_wr) {
- cdata->max_requests = devattr->max_qp_wr / depth;
- if (!cdata->max_requests)
- return -EINVAL;
- ep->rep_attr.cap.max_send_wr = cdata->max_requests *
- depth;
- }
- break;
- }
- default:
- break;
- }
+ rc = ia->ri_ops->ro_open(ia, ep, cdata);
+ if (rc)
+ return rc;
ep->rep_attr.cap.max_recv_wr = cdata->max_requests;
ep->rep_attr.cap.max_send_sge = (cdata->padding ? 4 : 2);
ep->rep_attr.cap.max_recv_sge = 1;
rpcrdma_ep_disconnect(ep, ia);
rpcrdma_flush_cqs(ep);
- switch (ia->ri_memreg_strategy) {
- case RPCRDMA_FRMR:
- rpcrdma_reset_frmrs(ia);
- break;
- case RPCRDMA_MTHCAFMR:
- rpcrdma_reset_fmrs(ia);
- break;
- case RPCRDMA_ALLPHYSICAL:
- break;
- default:
- rc = -EIO;
- goto out;
- }
-
xprt = container_of(ia, struct rpcrdma_xprt, rx_ia);
+ ia->ri_ops->ro_reset(xprt);
+
id = rpcrdma_create_id(xprt, ia,
(struct sockaddr *)&xprt->rx_data.addr);
if (IS_ERR(id)) {
return ERR_PTR(rc);
}
-static int
-rpcrdma_init_fmrs(struct rpcrdma_ia *ia, struct rpcrdma_buffer *buf)
-{
- int mr_access_flags = IB_ACCESS_REMOTE_WRITE | IB_ACCESS_REMOTE_READ;
- struct ib_fmr_attr fmr_attr = {
- .max_pages = RPCRDMA_MAX_DATA_SEGS,
- .max_maps = 1,
- .page_shift = PAGE_SHIFT
- };
- struct rpcrdma_mw *r;
- int i, rc;
-
- i = (buf->rb_max_requests + 1) * RPCRDMA_MAX_SEGS;
- dprintk("RPC: %s: initializing %d FMRs\n", __func__, i);
-
- while (i--) {
- r = kzalloc(sizeof(*r), GFP_KERNEL);
- if (r == NULL)
- return -ENOMEM;
-
- r->r.fmr = ib_alloc_fmr(ia->ri_pd, mr_access_flags, &fmr_attr);
- if (IS_ERR(r->r.fmr)) {
- rc = PTR_ERR(r->r.fmr);
- dprintk("RPC: %s: ib_alloc_fmr failed %i\n",
- __func__, rc);
- goto out_free;
- }
-
- list_add(&r->mw_list, &buf->rb_mws);
- list_add(&r->mw_all, &buf->rb_all);
- }
- return 0;
-
-out_free:
- kfree(r);
- return rc;
-}
-
-static int
-rpcrdma_init_frmrs(struct rpcrdma_ia *ia, struct rpcrdma_buffer *buf)
-{
- struct rpcrdma_frmr *f;
- struct rpcrdma_mw *r;
- int i, rc;
-
- i = (buf->rb_max_requests + 1) * RPCRDMA_MAX_SEGS;
- dprintk("RPC: %s: initializing %d FRMRs\n", __func__, i);
-
- while (i--) {
- r = kzalloc(sizeof(*r), GFP_KERNEL);
- if (r == NULL)
- return -ENOMEM;
- f = &r->r.frmr;
-
- f->fr_mr = ib_alloc_fast_reg_mr(ia->ri_pd,
- ia->ri_max_frmr_depth);
- if (IS_ERR(f->fr_mr)) {
- rc = PTR_ERR(f->fr_mr);
- dprintk("RPC: %s: ib_alloc_fast_reg_mr "
- "failed %i\n", __func__, rc);
- goto out_free;
- }
-
- f->fr_pgl = ib_alloc_fast_reg_page_list(ia->ri_id->device,
- ia->ri_max_frmr_depth);
- if (IS_ERR(f->fr_pgl)) {
- rc = PTR_ERR(f->fr_pgl);
- dprintk("RPC: %s: ib_alloc_fast_reg_page_list "
- "failed %i\n", __func__, rc);
-
- ib_dereg_mr(f->fr_mr);
- goto out_free;
- }
-
- list_add(&r->mw_list, &buf->rb_mws);
- list_add(&r->mw_all, &buf->rb_all);
- }
-
- return 0;
-
-out_free:
- kfree(r);
- return rc;
-}
-
int
rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt)
{
buf->rb_recv_bufs = (struct rpcrdma_rep **) p;
p = (char *) &buf->rb_recv_bufs[buf->rb_max_requests];
- INIT_LIST_HEAD(&buf->rb_mws);
- INIT_LIST_HEAD(&buf->rb_all);
- switch (ia->ri_memreg_strategy) {
- case RPCRDMA_FRMR:
- rc = rpcrdma_init_frmrs(ia, buf);
- if (rc)
- goto out;
- break;
- case RPCRDMA_MTHCAFMR:
- rc = rpcrdma_init_fmrs(ia, buf);
- if (rc)
- goto out;
- break;
- default:
- break;
- }
+ rc = ia->ri_ops->ro_init(r_xprt);
+ if (rc)
+ goto out;
for (i = 0; i < buf->rb_max_requests; i++) {
struct rpcrdma_req *req;
kfree(req);
}
-static void
-rpcrdma_destroy_fmrs(struct rpcrdma_buffer *buf)
-{
- struct rpcrdma_mw *r;
- int rc;
-
- while (!list_empty(&buf->rb_all)) {
- r = list_entry(buf->rb_all.next, struct rpcrdma_mw, mw_all);
- list_del(&r->mw_all);
- list_del(&r->mw_list);
-
- rc = ib_dealloc_fmr(r->r.fmr);
- if (rc)
- dprintk("RPC: %s: ib_dealloc_fmr failed %i\n",
- __func__, rc);
-
- kfree(r);
- }
-}
-
-static void
-rpcrdma_destroy_frmrs(struct rpcrdma_buffer *buf)
-{
- struct rpcrdma_mw *r;
- int rc;
-
- while (!list_empty(&buf->rb_all)) {
- r = list_entry(buf->rb_all.next, struct rpcrdma_mw, mw_all);
- list_del(&r->mw_all);
- list_del(&r->mw_list);
-
- rc = ib_dereg_mr(r->r.frmr.fr_mr);
- if (rc)
- dprintk("RPC: %s: ib_dereg_mr failed %i\n",
- __func__, rc);
- ib_free_fast_reg_page_list(r->r.frmr.fr_pgl);
-
- kfree(r);
- }
-}
-
void
rpcrdma_buffer_destroy(struct rpcrdma_buffer *buf)
{
rpcrdma_destroy_req(ia, buf->rb_send_bufs[i]);
}
- switch (ia->ri_memreg_strategy) {
- case RPCRDMA_FRMR:
- rpcrdma_destroy_frmrs(buf);
- break;
- case RPCRDMA_MTHCAFMR:
- rpcrdma_destroy_fmrs(buf);
- break;
- default:
- break;
- }
+ ia->ri_ops->ro_destroy(buf);
kfree(buf->rb_pool);
}
-/* After a disconnect, unmap all FMRs.
- *
- * This is invoked only in the transport connect worker in order
- * to serialize with rpcrdma_register_fmr_external().
- */
-static void
-rpcrdma_reset_fmrs(struct rpcrdma_ia *ia)
-{
- struct rpcrdma_xprt *r_xprt =
- container_of(ia, struct rpcrdma_xprt, rx_ia);
- struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
- struct list_head *pos;
- struct rpcrdma_mw *r;
- LIST_HEAD(l);
- int rc;
-
- list_for_each(pos, &buf->rb_all) {
- r = list_entry(pos, struct rpcrdma_mw, mw_all);
-
- INIT_LIST_HEAD(&l);
- list_add(&r->r.fmr->list, &l);
- rc = ib_unmap_fmr(&l);
- if (rc)
- dprintk("RPC: %s: ib_unmap_fmr failed %i\n",
- __func__, rc);
- }
-}
-
-/* After a disconnect, a flushed FAST_REG_MR can leave an FRMR in
- * an unusable state. Find FRMRs in this state and dereg / reg
- * each. FRMRs that are VALID and attached to an rpcrdma_req are
- * also torn down.
- *
- * This gives all in-use FRMRs a fresh rkey and leaves them INVALID.
- *
- * This is invoked only in the transport connect worker in order
- * to serialize with rpcrdma_register_frmr_external().
- */
-static void
-rpcrdma_reset_frmrs(struct rpcrdma_ia *ia)
-{
- struct rpcrdma_xprt *r_xprt =
- container_of(ia, struct rpcrdma_xprt, rx_ia);
- struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
- struct list_head *pos;
- struct rpcrdma_mw *r;
- int rc;
-
- list_for_each(pos, &buf->rb_all) {
- r = list_entry(pos, struct rpcrdma_mw, mw_all);
-
- if (r->r.frmr.fr_state == FRMR_IS_INVALID)
- continue;
-
- rc = ib_dereg_mr(r->r.frmr.fr_mr);
- if (rc)
- dprintk("RPC: %s: ib_dereg_mr failed %i\n",
- __func__, rc);
- ib_free_fast_reg_page_list(r->r.frmr.fr_pgl);
-
- r->r.frmr.fr_mr = ib_alloc_fast_reg_mr(ia->ri_pd,
- ia->ri_max_frmr_depth);
- if (IS_ERR(r->r.frmr.fr_mr)) {
- rc = PTR_ERR(r->r.frmr.fr_mr);
- dprintk("RPC: %s: ib_alloc_fast_reg_mr"
- " failed %i\n", __func__, rc);
- continue;
- }
- r->r.frmr.fr_pgl = ib_alloc_fast_reg_page_list(
- ia->ri_id->device,
- ia->ri_max_frmr_depth);
- if (IS_ERR(r->r.frmr.fr_pgl)) {
- rc = PTR_ERR(r->r.frmr.fr_pgl);
- dprintk("RPC: %s: "
- "ib_alloc_fast_reg_page_list "
- "failed %i\n", __func__, rc);
-
- ib_dereg_mr(r->r.frmr.fr_mr);
- continue;
- }
- r->r.frmr.fr_state = FRMR_IS_INVALID;
- }
-}
-
/* "*mw" can be NULL when rpcrdma_buffer_get_mrs() fails, leaving
* some req segments uninitialized.
*/
}
}
-/* rpcrdma_unmap_one() was already done by rpcrdma_deregister_frmr_external().
+/* rpcrdma_unmap_one() was already done during deregistration.
* Redo only the ib_post_send().
*/
static void
* Wrappers for internal-use kmalloc memory registration, used by buffer code.
*/
+void
+rpcrdma_mapping_error(struct rpcrdma_mr_seg *seg)
+{
+ dprintk("RPC: map_one: offset %p iova %llx len %zu\n",
+ seg->mr_offset,
+ (unsigned long long)seg->mr_dma, seg->mr_dmalen);
+}
+
static int
rpcrdma_register_internal(struct rpcrdma_ia *ia, void *va, int len,
struct ib_mr **mrp, struct ib_sge *iov)
}
}
-/*
- * Wrappers for chunk registration, shared by read/write chunk code.
- */
-
-static void
-rpcrdma_map_one(struct rpcrdma_ia *ia, struct rpcrdma_mr_seg *seg, int writing)
-{
- seg->mr_dir = writing ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
- seg->mr_dmalen = seg->mr_len;
- if (seg->mr_page)
- seg->mr_dma = ib_dma_map_page(ia->ri_id->device,
- seg->mr_page, offset_in_page(seg->mr_offset),
- seg->mr_dmalen, seg->mr_dir);
- else
- seg->mr_dma = ib_dma_map_single(ia->ri_id->device,
- seg->mr_offset,
- seg->mr_dmalen, seg->mr_dir);
- if (ib_dma_mapping_error(ia->ri_id->device, seg->mr_dma)) {
- dprintk("RPC: %s: mr_dma %llx mr_offset %p mr_dma_len %zu\n",
- __func__,
- (unsigned long long)seg->mr_dma,
- seg->mr_offset, seg->mr_dmalen);
- }
-}
-
-static void
-rpcrdma_unmap_one(struct rpcrdma_ia *ia, struct rpcrdma_mr_seg *seg)
-{
- if (seg->mr_page)
- ib_dma_unmap_page(ia->ri_id->device,
- seg->mr_dma, seg->mr_dmalen, seg->mr_dir);
- else
- ib_dma_unmap_single(ia->ri_id->device,
- seg->mr_dma, seg->mr_dmalen, seg->mr_dir);
-}
-
-static int
-rpcrdma_register_frmr_external(struct rpcrdma_mr_seg *seg,
- int *nsegs, int writing, struct rpcrdma_ia *ia,
- struct rpcrdma_xprt *r_xprt)
-{
- struct rpcrdma_mr_seg *seg1 = seg;
- struct rpcrdma_mw *mw = seg1->rl_mw;
- struct rpcrdma_frmr *frmr = &mw->r.frmr;
- struct ib_mr *mr = frmr->fr_mr;
- struct ib_send_wr fastreg_wr, *bad_wr;
- u8 key;
- int len, pageoff;
- int i, rc;
- int seg_len;
- u64 pa;
- int page_no;
-
- pageoff = offset_in_page(seg1->mr_offset);
- seg1->mr_offset -= pageoff; /* start of page */
- seg1->mr_len += pageoff;
- len = -pageoff;
- if (*nsegs > ia->ri_max_frmr_depth)
- *nsegs = ia->ri_max_frmr_depth;
- for (page_no = i = 0; i < *nsegs;) {
- rpcrdma_map_one(ia, seg, writing);
- pa = seg->mr_dma;
- for (seg_len = seg->mr_len; seg_len > 0; seg_len -= PAGE_SIZE) {
- frmr->fr_pgl->page_list[page_no++] = pa;
- pa += PAGE_SIZE;
- }
- len += seg->mr_len;
- ++seg;
- ++i;
- /* Check for holes */
- if ((i < *nsegs && offset_in_page(seg->mr_offset)) ||
- offset_in_page((seg-1)->mr_offset + (seg-1)->mr_len))
- break;
- }
- dprintk("RPC: %s: Using frmr %p to map %d segments\n",
- __func__, mw, i);
-
- frmr->fr_state = FRMR_IS_VALID;
-
- memset(&fastreg_wr, 0, sizeof(fastreg_wr));
- fastreg_wr.wr_id = (unsigned long)(void *)mw;
- fastreg_wr.opcode = IB_WR_FAST_REG_MR;
- fastreg_wr.wr.fast_reg.iova_start = seg1->mr_dma;
- fastreg_wr.wr.fast_reg.page_list = frmr->fr_pgl;
- fastreg_wr.wr.fast_reg.page_list_len = page_no;
- fastreg_wr.wr.fast_reg.page_shift = PAGE_SHIFT;
- fastreg_wr.wr.fast_reg.length = page_no << PAGE_SHIFT;
- if (fastreg_wr.wr.fast_reg.length < len) {
- rc = -EIO;
- goto out_err;
- }
-
- /* Bump the key */
- key = (u8)(mr->rkey & 0x000000FF);
- ib_update_fast_reg_key(mr, ++key);
-
- fastreg_wr.wr.fast_reg.access_flags = (writing ?
- IB_ACCESS_REMOTE_WRITE | IB_ACCESS_LOCAL_WRITE :
- IB_ACCESS_REMOTE_READ);
- fastreg_wr.wr.fast_reg.rkey = mr->rkey;
- DECR_CQCOUNT(&r_xprt->rx_ep);
-
- rc = ib_post_send(ia->ri_id->qp, &fastreg_wr, &bad_wr);
- if (rc) {
- dprintk("RPC: %s: failed ib_post_send for register,"
- " status %i\n", __func__, rc);
- ib_update_fast_reg_key(mr, --key);
- goto out_err;
- } else {
- seg1->mr_rkey = mr->rkey;
- seg1->mr_base = seg1->mr_dma + pageoff;
- seg1->mr_nsegs = i;
- seg1->mr_len = len;
- }
- *nsegs = i;
- return 0;
-out_err:
- frmr->fr_state = FRMR_IS_INVALID;
- while (i--)
- rpcrdma_unmap_one(ia, --seg);
- return rc;
-}
-
-static int
-rpcrdma_deregister_frmr_external(struct rpcrdma_mr_seg *seg,
- struct rpcrdma_ia *ia, struct rpcrdma_xprt *r_xprt)
-{
- struct rpcrdma_mr_seg *seg1 = seg;
- struct ib_send_wr invalidate_wr, *bad_wr;
- int rc;
-
- seg1->rl_mw->r.frmr.fr_state = FRMR_IS_INVALID;
-
- memset(&invalidate_wr, 0, sizeof invalidate_wr);
- invalidate_wr.wr_id = (unsigned long)(void *)seg1->rl_mw;
- invalidate_wr.opcode = IB_WR_LOCAL_INV;
- invalidate_wr.ex.invalidate_rkey = seg1->rl_mw->r.frmr.fr_mr->rkey;
- DECR_CQCOUNT(&r_xprt->rx_ep);
-
- read_lock(&ia->ri_qplock);
- while (seg1->mr_nsegs--)
- rpcrdma_unmap_one(ia, seg++);
- rc = ib_post_send(ia->ri_id->qp, &invalidate_wr, &bad_wr);
- read_unlock(&ia->ri_qplock);
- if (rc) {
- /* Force rpcrdma_buffer_get() to retry */
- seg1->rl_mw->r.frmr.fr_state = FRMR_IS_STALE;
- dprintk("RPC: %s: failed ib_post_send for invalidate,"
- " status %i\n", __func__, rc);
- }
- return rc;
-}
-
-static int
-rpcrdma_register_fmr_external(struct rpcrdma_mr_seg *seg,
- int *nsegs, int writing, struct rpcrdma_ia *ia)
-{
- struct rpcrdma_mr_seg *seg1 = seg;
- u64 physaddrs[RPCRDMA_MAX_DATA_SEGS];
- int len, pageoff, i, rc;
-
- pageoff = offset_in_page(seg1->mr_offset);
- seg1->mr_offset -= pageoff; /* start of page */
- seg1->mr_len += pageoff;
- len = -pageoff;
- if (*nsegs > RPCRDMA_MAX_DATA_SEGS)
- *nsegs = RPCRDMA_MAX_DATA_SEGS;
- for (i = 0; i < *nsegs;) {
- rpcrdma_map_one(ia, seg, writing);
- physaddrs[i] = seg->mr_dma;
- len += seg->mr_len;
- ++seg;
- ++i;
- /* Check for holes */
- if ((i < *nsegs && offset_in_page(seg->mr_offset)) ||
- offset_in_page((seg-1)->mr_offset + (seg-1)->mr_len))
- break;
- }
- rc = ib_map_phys_fmr(seg1->rl_mw->r.fmr, physaddrs, i, seg1->mr_dma);
- if (rc) {
- dprintk("RPC: %s: failed ib_map_phys_fmr "
- "%u@0x%llx+%i (%d)... status %i\n", __func__,
- len, (unsigned long long)seg1->mr_dma,
- pageoff, i, rc);
- while (i--)
- rpcrdma_unmap_one(ia, --seg);
- } else {
- seg1->mr_rkey = seg1->rl_mw->r.fmr->rkey;
- seg1->mr_base = seg1->mr_dma + pageoff;
- seg1->mr_nsegs = i;
- seg1->mr_len = len;
- }
- *nsegs = i;
- return rc;
-}
-
-static int
-rpcrdma_deregister_fmr_external(struct rpcrdma_mr_seg *seg,
- struct rpcrdma_ia *ia)
-{
- struct rpcrdma_mr_seg *seg1 = seg;
- LIST_HEAD(l);
- int rc;
-
- list_add(&seg1->rl_mw->r.fmr->list, &l);
- rc = ib_unmap_fmr(&l);
- read_lock(&ia->ri_qplock);
- while (seg1->mr_nsegs--)
- rpcrdma_unmap_one(ia, seg++);
- read_unlock(&ia->ri_qplock);
- if (rc)
- dprintk("RPC: %s: failed ib_unmap_fmr,"
- " status %i\n", __func__, rc);
- return rc;
-}
-
-int
-rpcrdma_register_external(struct rpcrdma_mr_seg *seg,
- int nsegs, int writing, struct rpcrdma_xprt *r_xprt)
-{
- struct rpcrdma_ia *ia = &r_xprt->rx_ia;
- int rc = 0;
-
- switch (ia->ri_memreg_strategy) {
-
- case RPCRDMA_ALLPHYSICAL:
- rpcrdma_map_one(ia, seg, writing);
- seg->mr_rkey = ia->ri_bind_mem->rkey;
- seg->mr_base = seg->mr_dma;
- seg->mr_nsegs = 1;
- nsegs = 1;
- break;
-
- /* Registration using frmr registration */
- case RPCRDMA_FRMR:
- rc = rpcrdma_register_frmr_external(seg, &nsegs, writing, ia, r_xprt);
- break;
-
- /* Registration using fmr memory registration */
- case RPCRDMA_MTHCAFMR:
- rc = rpcrdma_register_fmr_external(seg, &nsegs, writing, ia);
- break;
-
- default:
- return -EIO;
- }
- if (rc)
- return rc;
-
- return nsegs;
-}
-
-int
-rpcrdma_deregister_external(struct rpcrdma_mr_seg *seg,
- struct rpcrdma_xprt *r_xprt)
-{
- struct rpcrdma_ia *ia = &r_xprt->rx_ia;
- int nsegs = seg->mr_nsegs, rc;
-
- switch (ia->ri_memreg_strategy) {
-
- case RPCRDMA_ALLPHYSICAL:
- read_lock(&ia->ri_qplock);
- rpcrdma_unmap_one(ia, seg);
- read_unlock(&ia->ri_qplock);
- break;
-
- case RPCRDMA_FRMR:
- rc = rpcrdma_deregister_frmr_external(seg, ia, r_xprt);
- break;
-
- case RPCRDMA_MTHCAFMR:
- rc = rpcrdma_deregister_fmr_external(seg, ia);
- break;
-
- default:
- break;
- }
- return nsegs;
-}
-
/*
* Prepost any receive buffer, then post send.
*
}
send_wr.next = NULL;
- send_wr.wr_id = 0ULL; /* no send cookie */
+ send_wr.wr_id = RPCRDMA_IGNORE_COMPLETION;
send_wr.sg_list = req->rl_send_iov;
send_wr.num_sge = req->rl_niovs;
send_wr.opcode = IB_WR_SEND;
return rc;
}
-/* Physical mapping means one Read/Write list entry per-page.
- * All list entries must fit within an inline buffer
- *
- * NB: The server must return a Write list for NFS READ,
- * which has the same constraint. Factor in the inline
- * rsize as well.
+/* How many chunk list items fit within our inline buffers?
*/
-static size_t
-rpcrdma_physical_max_payload(struct rpcrdma_xprt *r_xprt)
+unsigned int
+rpcrdma_max_segments(struct rpcrdma_xprt *r_xprt)
{
struct rpcrdma_create_data_internal *cdata = &r_xprt->rx_data;
- unsigned int inline_size, pages;
+ int bytes, segments;
- inline_size = min_t(unsigned int,
- cdata->inline_wsize, cdata->inline_rsize);
- inline_size -= RPCRDMA_HDRLEN_MIN;
- pages = inline_size / sizeof(struct rpcrdma_segment);
- return pages << PAGE_SHIFT;
-}
-
-static size_t
-rpcrdma_mr_max_payload(struct rpcrdma_xprt *r_xprt)
-{
- return RPCRDMA_MAX_DATA_SEGS << PAGE_SHIFT;
-}
-
-size_t
-rpcrdma_max_payload(struct rpcrdma_xprt *r_xprt)
-{
- size_t result;
-
- switch (r_xprt->rx_ia.ri_memreg_strategy) {
- case RPCRDMA_ALLPHYSICAL:
- result = rpcrdma_physical_max_payload(r_xprt);
- break;
- default:
- result = rpcrdma_mr_max_payload(r_xprt);
+ bytes = min_t(unsigned int, cdata->inline_wsize, cdata->inline_rsize);
+ bytes -= RPCRDMA_HDRLEN_MIN;
+ if (bytes < sizeof(struct rpcrdma_segment) * 2) {
+ pr_warn("RPC: %s: inline threshold too small\n",
+ __func__);
+ return 0;
}
- return result;
+
+ segments = 1 << (fls(bytes / sizeof(struct rpcrdma_segment)) - 1);
+ dprintk("RPC: %s: max chunk list size = %d segments\n",
+ __func__, segments);
+ return segments;
}
* Interface Adapter -- one per transport instance
*/
struct rpcrdma_ia {
+ const struct rpcrdma_memreg_ops *ri_ops;
rwlock_t ri_qplock;
struct rdma_cm_id *ri_id;
struct ib_pd *ri_pd;
#define INIT_CQCOUNT(ep) atomic_set(&(ep)->rep_cqcount, (ep)->rep_cqinit)
#define DECR_CQCOUNT(ep) atomic_sub_return(1, &(ep)->rep_cqcount)
+/* Force completion handler to ignore the signal
+ */
+#define RPCRDMA_IGNORE_COMPLETION (0ULL)
+
/* Registered buffer -- registered kmalloc'd memory for RDMA SEND/RECV
*
* The below structure appears at the front of a large region of kmalloc'd
return (struct rpcrdma_msg *)rb->rg_base;
}
-enum rpcrdma_chunktype {
- rpcrdma_noch = 0,
- rpcrdma_readch,
- rpcrdma_areadch,
- rpcrdma_writech,
- rpcrdma_replych
-};
-
/*
* struct rpcrdma_rep -- this structure encapsulates state required to recv
* and complete a reply, asychronously. It needs several pieces of
struct ib_fmr *fmr;
struct rpcrdma_frmr frmr;
} r;
+ void (*mw_sendcompletion)(struct ib_wc *);
struct list_head mw_list;
struct list_head mw_all;
};
unsigned int rl_niovs; /* 0, 2 or 4 */
unsigned int rl_nchunks; /* non-zero if chunks */
unsigned int rl_connect_cookie; /* retry detection */
- enum rpcrdma_chunktype rl_rtype, rl_wtype;
struct rpcrdma_buffer *rl_buffer; /* home base for this structure */
struct rpcrdma_rep *rl_reply;/* holder for reply buffer */
struct ib_sge rl_send_iov[4]; /* for active requests */
unsigned long bad_reply_count;
};
+/*
+ * Per-registration mode operations
+ */
+struct rpcrdma_xprt;
+struct rpcrdma_memreg_ops {
+ int (*ro_map)(struct rpcrdma_xprt *,
+ struct rpcrdma_mr_seg *, int, bool);
+ int (*ro_unmap)(struct rpcrdma_xprt *,
+ struct rpcrdma_mr_seg *);
+ int (*ro_open)(struct rpcrdma_ia *,
+ struct rpcrdma_ep *,
+ struct rpcrdma_create_data_internal *);
+ size_t (*ro_maxpages)(struct rpcrdma_xprt *);
+ int (*ro_init)(struct rpcrdma_xprt *);
+ void (*ro_reset)(struct rpcrdma_xprt *);
+ void (*ro_destroy)(struct rpcrdma_buffer *);
+ const char *ro_displayname;
+};
+
+extern const struct rpcrdma_memreg_ops rpcrdma_fmr_memreg_ops;
+extern const struct rpcrdma_memreg_ops rpcrdma_frwr_memreg_ops;
+extern const struct rpcrdma_memreg_ops rpcrdma_physical_memreg_ops;
+
/*
* RPCRDMA transport -- encapsulates the structures above for
* integration with RPC.
void rpcrdma_recv_buffer_get(struct rpcrdma_req *);
void rpcrdma_recv_buffer_put(struct rpcrdma_rep *);
-int rpcrdma_register_external(struct rpcrdma_mr_seg *,
- int, int, struct rpcrdma_xprt *);
-int rpcrdma_deregister_external(struct rpcrdma_mr_seg *,
- struct rpcrdma_xprt *);
-
struct rpcrdma_regbuf *rpcrdma_alloc_regbuf(struct rpcrdma_ia *,
size_t, gfp_t);
void rpcrdma_free_regbuf(struct rpcrdma_ia *,
struct rpcrdma_regbuf *);
+unsigned int rpcrdma_max_segments(struct rpcrdma_xprt *);
+
+/*
+ * Wrappers for chunk registration, shared by read/write chunk code.
+ */
+
+void rpcrdma_mapping_error(struct rpcrdma_mr_seg *);
+
+static inline enum dma_data_direction
+rpcrdma_data_dir(bool writing)
+{
+ return writing ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
+}
+
+static inline void
+rpcrdma_map_one(struct ib_device *device, struct rpcrdma_mr_seg *seg,
+ enum dma_data_direction direction)
+{
+ seg->mr_dir = direction;
+ seg->mr_dmalen = seg->mr_len;
+
+ if (seg->mr_page)
+ seg->mr_dma = ib_dma_map_page(device,
+ seg->mr_page, offset_in_page(seg->mr_offset),
+ seg->mr_dmalen, seg->mr_dir);
+ else
+ seg->mr_dma = ib_dma_map_single(device,
+ seg->mr_offset,
+ seg->mr_dmalen, seg->mr_dir);
+
+ if (ib_dma_mapping_error(device, seg->mr_dma))
+ rpcrdma_mapping_error(seg);
+}
+
+static inline void
+rpcrdma_unmap_one(struct ib_device *device, struct rpcrdma_mr_seg *seg)
+{
+ if (seg->mr_page)
+ ib_dma_unmap_page(device,
+ seg->mr_dma, seg->mr_dmalen, seg->mr_dir);
+ else
+ ib_dma_unmap_single(device,
+ seg->mr_dma, seg->mr_dmalen, seg->mr_dir);
+}
+
/*
* RPC/RDMA connection management calls - xprtrdma/rpc_rdma.c
*/
/*
* RPC/RDMA protocol calls - xprtrdma/rpc_rdma.c
*/
-ssize_t rpcrdma_marshal_chunks(struct rpc_rqst *, ssize_t);
int rpcrdma_marshal_req(struct rpc_rqst *);
-size_t rpcrdma_max_payload(struct rpcrdma_xprt *);
/* Temporary NFS request map cache. Created in svc_rdma.c */
extern struct kmem_cache *svc_rdma_map_cachep;
git.openpandora.org / pandora-kernel.git / commitdiff