diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-18 14:32:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-18 14:32:33 -0700 |
| commit | 6860c981b9672324cb53b883cfda8d2ea1445ff1 (patch) | |
| tree | d97a47712479bc2f886012d7f2da8b00ac504f3a | |
| parent | 0570bc8b7c9b41deba6f61ac218922e7168ad648 (diff) | |
| parent | d5b9216fd5114be4ed98ca9c1ecc5f164cd8cf5e (diff) | |
| download | linux-6860c981b9672324cb53b883cfda8d2ea1445ff1.tar.bz2 | |
Merge tag 'nfs-for-5.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Highlights include:
Stable fixes:
- SUNRPC: Ensure bvecs are re-synced when we re-encode the RPC
request
- Fix an Oops in ff_layout_track_ds_error due to a PTR_ERR()
dereference
- Revert buggy NFS readdirplus optimisation
- NFSv4: Handle the special Linux file open access mode
- pnfs: Fix a problem where we gratuitously start doing I/O through
the MDS
Features:
- Allow NFS client to set up multiple TCP connections to the server
using a new 'nconnect=X' mount option. Queue length is used to
balance load.
- Enhance statistics reporting to report on all transports when using
multiple connections.
- Speed up SUNRPC by removing bh-safe spinlocks
- Add a mechanism to allow NFSv4 to request that containers set a
unique per-host identifier for when the hostname is not set.
- Ensure NFSv4 updates the lease_time after a clientid update
Bugfixes and cleanup:
- Fix use-after-free in rpcrdma_post_recvs
- Fix a memory leak when nfs_match_client() is interrupted
- Fix buggy file access checking in NFSv4 open for execute
- disable unsupported client side deduplication
- Fix spurious client disconnections
- Fix occasional RDMA transport deadlock
- Various RDMA cleanups
- Various tracepoint fixes
- Fix the TCP callback channel to guarantee the server can actually
send the number of callback requests that was negotiated at mount
time"
* tag 'nfs-for-5.3-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (68 commits)
pnfs/flexfiles: Add tracepoints for detecting pnfs fallback to MDS
pnfs: Fix a problem where we gratuitously start doing I/O through the MDS
SUNRPC: Optimise transport balancing code
SUNRPC: Ensure the bvecs are reset when we re-encode the RPC request
pnfs/flexfiles: Fix PTR_ERR() dereferences in ff_layout_track_ds_error
NFSv4: Don't use the zero stateid with layoutget
SUNRPC: Fix up backchannel slot table accounting
SUNRPC: Fix initialisation of struct rpc_xprt_switch
SUNRPC: Skip zero-refcount transports
SUNRPC: Replace division by multiplication in calculation of queue length
NFSv4: Validate the stateid before applying it to state recovery
nfs4.0: Refetch lease_time after clientid update
nfs4: Rename nfs41_setup_state_renewal
nfs4: Make nfs4_proc_get_lease_time available for nfs4.0
nfs: Fix copy-and-paste error in debug message
NFS: Replace 16 seq_printf() calls by seq_puts()
NFS: Use seq_putc() in nfs_show_stats()
Revert "NFS: readdirplus optimization by cache mechanism" (memleak)
SUNRPC: Fix transport accounting when caller specifies an rpc_xprt
NFS: Record task, client ID, and XID in xdr_status trace points
...
56 files changed, 1831 insertions, 870 deletions
diff --git a/fs/nfs/Makefile b/fs/nfs/Makefile index c587e3c4c6a6..34cdeaecccf6 100644 --- a/fs/nfs/Makefile +++ b/fs/nfs/Makefile @@ -8,7 +8,8 @@ obj-$(CONFIG_NFS_FS) += nfs.o CFLAGS_nfstrace.o += -I$(src) nfs-y := client.o dir.o file.o getroot.o inode.o super.o \ io.o direct.o pagelist.o read.o symlink.o unlink.o \ - write.o namespace.o mount_clnt.o nfstrace.o export.o + write.o namespace.o mount_clnt.o nfstrace.o \ + export.o sysfs.o nfs-$(CONFIG_ROOT_NFS) += nfsroot.o nfs-$(CONFIG_SYSCTL) += sysctl.o nfs-$(CONFIG_NFS_FSCACHE) += fscache.o fscache-index.o diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index 315967354954..f39924ba050b 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -414,27 +414,39 @@ static __be32 validate_seqid(const struct nfs4_slot_table *tbl, const struct nfs4_slot *slot, const struct cb_sequenceargs * args) { + __be32 ret; + + ret = cpu_to_be32(NFS4ERR_BADSLOT); if (args->csa_slotid > tbl->server_highest_slotid) - return htonl(NFS4ERR_BADSLOT); + goto out_err; /* Replay */ if (args->csa_sequenceid == slot->seq_nr) { + ret = cpu_to_be32(NFS4ERR_DELAY); if (nfs4_test_locked_slot(tbl, slot->slot_nr)) - return htonl(NFS4ERR_DELAY); + goto out_err; + /* Signal process_op to set this error on next op */ + ret = cpu_to_be32(NFS4ERR_RETRY_UNCACHED_REP); if (args->csa_cachethis == 0) - return htonl(NFS4ERR_RETRY_UNCACHED_REP); + goto out_err; /* Liar! We never allowed you to set csa_cachethis != 0 */ - return htonl(NFS4ERR_SEQ_FALSE_RETRY); + ret = cpu_to_be32(NFS4ERR_SEQ_FALSE_RETRY); + goto out_err; } /* Note: wraparound relies on seq_nr being of type u32 */ - if (likely(args->csa_sequenceid == slot->seq_nr + 1)) - return htonl(NFS4_OK); - /* Misordered request */ - return htonl(NFS4ERR_SEQ_MISORDERED); + ret = cpu_to_be32(NFS4ERR_SEQ_MISORDERED); + if (args->csa_sequenceid != slot->seq_nr + 1) + goto out_err; + + return cpu_to_be32(NFS4_OK); + +out_err: + trace_nfs4_cb_seqid_err(args, ret); + return ret; } /* diff --git a/fs/nfs/client.c b/fs/nfs/client.c index d7e4f0848e28..30838304a0bf 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -49,6 +49,7 @@ #include "pnfs.h" #include "nfs.h" #include "netns.h" +#include "sysfs.h" #define NFSDBG_FACILITY NFSDBG_CLIENT @@ -175,6 +176,7 @@ struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init) clp->cl_rpcclient = ERR_PTR(-EINVAL); clp->cl_proto = cl_init->proto; + clp->cl_nconnect = cl_init->nconnect; clp->cl_net = get_net(cl_init->net); clp->cl_principal = "*"; @@ -192,7 +194,7 @@ error_0: EXPORT_SYMBOL_GPL(nfs_alloc_client); #if IS_ENABLED(CONFIG_NFS_V4) -void nfs_cleanup_cb_ident_idr(struct net *net) +static void nfs_cleanup_cb_ident_idr(struct net *net) { struct nfs_net *nn = net_generic(net, nfs_net_id); @@ -214,7 +216,7 @@ static void pnfs_init_server(struct nfs_server *server) } #else -void nfs_cleanup_cb_ident_idr(struct net *net) +static void nfs_cleanup_cb_ident_idr(struct net *net) { } @@ -406,10 +408,10 @@ struct nfs_client *nfs_get_client(const struct nfs_client_initdata *cl_init) clp = nfs_match_client(cl_init); if (clp) { spin_unlock(&nn->nfs_client_lock); - if (IS_ERR(clp)) - return clp; if (new) new->rpc_ops->free_client(new); + if (IS_ERR(clp)) + return clp; return nfs_found_client(cl_init, clp); } if (new) { @@ -493,6 +495,7 @@ int nfs_create_rpc_client(struct nfs_client *clp, struct rpc_create_args args = { .net = clp->cl_net, .protocol = clp->cl_proto, + .nconnect = clp->cl_nconnect, .address = (struct sockaddr *)&clp->cl_addr, .addrsize = clp->cl_addrlen, .timeout = cl_init->timeparms, @@ -658,6 +661,7 @@ static int nfs_init_server(struct nfs_server *server, .net = data->net, .timeparms = &timeparms, .cred = server->cred, + .nconnect = data->nfs_server.nconnect, }; struct nfs_client *clp; int error; @@ -1072,6 +1076,18 @@ void nfs_clients_init(struct net *net) #endif spin_lock_init(&nn->nfs_client_lock); nn->boot_time = ktime_get_real(); + + nfs_netns_sysfs_setup(nn, net); +} + +void nfs_clients_exit(struct net *net) +{ + struct nfs_net *nn = net_generic(net, nfs_net_id); + + nfs_netns_sysfs_destroy(nn); + nfs_cleanup_cb_ident_idr(net); + WARN_ON_ONCE(!list_empty(&nn->nfs_client_list)); + WARN_ON_ONCE(!list_empty(&nn->nfs_volume_list)); } #ifdef CONFIG_PROC_FS diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 57b6a45576ad..8d501093660f 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -80,6 +80,10 @@ static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct inode *dir ctx->dup_cookie = 0; ctx->cred = get_cred(cred); spin_lock(&dir->i_lock); + if (list_empty(&nfsi->open_files) && + (nfsi->cache_validity & NFS_INO_DATA_INVAL_DEFER)) + nfsi->cache_validity |= NFS_INO_INVALID_DATA | + NFS_INO_REVAL_FORCED; list_add(&ctx->list, &nfsi->open_files); spin_unlock(&dir->i_lock); return ctx; @@ -140,19 +144,12 @@ struct nfs_cache_array { struct nfs_cache_array_entry array[0]; }; -struct readdirvec { - unsigned long nr; - unsigned long index; - struct page *pages[NFS_MAX_READDIR_RAPAGES]; -}; - typedef int (*decode_dirent_t)(struct xdr_stream *, struct nfs_entry *, bool); typedef struct { struct file *file; struct page *page; struct dir_context *ctx; unsigned long page_index; - struct readdirvec pvec; u64 *dir_cookie; u64 last_cookie; loff_t current_index; @@ -532,10 +529,6 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en struct nfs_cache_array *array; unsigned int count = 0; int status; - int max_rapages = NFS_MAX_READDIR_RAPAGES; - - desc->pvec.index = desc->page_index; - desc->pvec.nr = 0; scratch = alloc_page(GFP_KERNEL); if (scratch == NULL) @@ -560,40 +553,20 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en if (desc->plus) nfs_prime_dcache(file_dentry(desc->file), entry); - status = nfs_readdir_add_to_array(entry, desc->pvec.pages[desc->pvec.nr]); - if (status == -ENOSPC) { - desc->pvec.nr++; - if (desc->pvec.nr == max_rapages) - break; - status = nfs_readdir_add_to_array(entry, desc->pvec.pages[desc->pvec.nr]); - } + status = nfs_readdir_add_to_array(entry, page); if (status != 0) break; } while (!entry->eof); - /* - * page and desc->pvec.pages[0] are valid, don't need to check - * whether or not to be NULL. - */ - copy_highpage(page, desc->pvec.pages[0]); - out_nopages: if (count == 0 || (status == -EBADCOOKIE && entry->eof != 0)) { - array = kmap_atomic(desc->pvec.pages[desc->pvec.nr]); + array = kmap(page); array->eof_index = array->size; status = 0; - kunmap_atomic(array); + kunmap(page); } put_page(scratch); - - /* - * desc->pvec.nr > 0 means at least one page was completely filled, - * we should return -ENOSPC. Otherwise function - * nfs_readdir_xdr_to_array will enter infinite loop. - */ - if (desc->pvec.nr > 0) - return -ENOSPC; return status; } @@ -627,24 +600,6 @@ out_freepages: return -ENOMEM; } -/* - * nfs_readdir_rapages_init initialize rapages by nfs_cache_array structure. - */ -static -void nfs_readdir_rapages_init(nfs_readdir_descriptor_t *desc) -{ - struct nfs_cache_array *array; - int max_rapages = NFS_MAX_READDIR_RAPAGES; - int index; - - for (index = 0; index < max_rapages; index++) { - array = kmap_atomic(desc->pvec.pages[index]); - memset(array, 0, sizeof(struct nfs_cache_array)); - array->eof_index = -1; - kunmap_atomic(array); - } -} - static int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page, struct inode *inode) { @@ -655,12 +610,6 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page, int status = -ENOMEM; unsigned int array_size = ARRAY_SIZE(pages); - /* - * This means we hit readdir rdpages miss, the preallocated rdpages - * are useless, the preallocate rdpages should be reinitialized. - */ - nfs_readdir_rapages_init(desc); - entry.prev_cookie = 0; entry.cookie = desc->last_cookie; entry.eof = 0; @@ -721,24 +670,9 @@ int nfs_readdir_filler(void *data, struct page* page) struct inode *inode = file_inode(desc->file); int ret; - /* - * If desc->page_index in range desc->pvec.index and - * desc->pvec.index + desc->pvec.nr, we get readdir cache hit. - */ - if (desc->page_index >= desc->pvec.index && - desc->page_index < (desc->pvec.index + desc->pvec.nr)) { - /* - * page and desc->pvec.pages[x] are valid, don't need to check - * whether or not to be NULL. - */ - copy_highpage(page, desc->pvec.pages[desc->page_index - desc->pvec.index]); - ret = 0; - } else { - ret = nfs_readdir_xdr_to_array(desc, page, inode); - if (ret < 0) - goto error; - } - + ret = nfs_readdir_xdr_to_array(desc, page, inode); + if (ret < 0) + goto error; SetPageUptodate(page); if (invalidate_inode_pages2_range(inode->i_mapping, page->index + 1, -1) < 0) { @@ -903,7 +837,6 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx) *desc = &my_desc; struct nfs_open_dir_context *dir_ctx = file->private_data; int res = 0; - int max_rapages = NFS_MAX_READDIR_RAPAGES; dfprintk(FILE, "NFS: readdir(%pD2) starting at cookie %llu\n", file, (long long)ctx->pos); @@ -923,12 +856,6 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx) desc->decode = NFS_PROTO(inode)->decode_dirent; desc->plus = nfs_use_readdirplus(inode, ctx); - res = nfs_readdir_alloc_pages(desc->pvec.pages, max_rapages); - if (res < 0) - return -ENOMEM; - - nfs_readdir_rapages_init(desc); - if (ctx->pos == 0 || nfs_attribute_cache_expired(inode)) res = nfs_revalidate_mapping(inode, file->f_mapping); if (res < 0) @@ -964,7 +891,6 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx) break; } while (!desc->eof); out: - nfs_readdir_free_pages(desc->pvec.pages, max_rapages); if (res > 0) res = 0; dfprintk(FILE, "NFS: readdir(%pD2) returns %d\n", file, res); diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index bcff3bf5ae09..b04e20d28162 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -934,6 +934,10 @@ out_nolseg: if (pgio->pg_error < 0) return; out_mds: + trace_pnfs_mds_fallback_pg_init_read(pgio->pg_inode, + 0, NFS4_MAX_UINT64, IOMODE_READ, + NFS_I(pgio->pg_inode)->layout, + pgio->pg_lseg); pnfs_put_lseg(pgio->pg_lseg); pgio->pg_lseg = NULL; nfs_pageio_reset_read_mds(pgio); @@ -1000,6 +1004,10 @@ retry: return; out_mds: + trace_pnfs_mds_fallback_pg_init_write(pgio->pg_inode, + 0, NFS4_MAX_UINT64, IOMODE_RW, + NFS_I(pgio->pg_inode)->layout, + pgio->pg_lseg); pnfs_put_lseg(pgio->pg_lseg); pgio->pg_lseg = NULL; nfs_pageio_reset_write_mds(pgio); @@ -1026,6 +1034,10 @@ ff_layout_pg_get_mirror_count_write(struct nfs_pageio_descriptor *pgio, if (pgio->pg_lseg) return FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg); + trace_pnfs_mds_fallback_pg_get_mirror_count(pgio->pg_inode, + 0, NFS4_MAX_UINT64, IOMODE_RW, + NFS_I(pgio->pg_inode)->layout, + pgio->pg_lseg); /* no lseg means that pnfs is not in use, so no mirroring here */ nfs_pageio_reset_write_mds(pgio); out: @@ -1075,6 +1087,10 @@ static void ff_layout_reset_write(struct nfs_pgio_header *hdr, bool retry_pnfs) hdr->args.count, (unsigned long long)hdr->args.offset); + trace_pnfs_mds_fallback_write_done(hdr->inode, + hdr->args.offset, hdr->args.count, + IOMODE_RW, NFS_I(hdr->inode)->layout, + hdr->lseg); task->tk_status = pnfs_write_done_resend_to_mds(hdr); } } @@ -1094,6 +1110,10 @@ static void ff_layout_reset_read(struct nfs_pgio_header *hdr) hdr->args.count, (unsigned long long)hdr->args.offset); + trace_pnfs_mds_fallback_read_done(hdr->inode, + hdr->args.offset, hdr->args.count, + IOMODE_READ, NFS_I(hdr->inode)->layout, + hdr->lseg); task->tk_status = pnfs_read_done_resend_to_mds(hdr); } } @@ -1827,6 +1847,9 @@ ff_layout_read_pagelist(struct nfs_pgio_header *hdr) out_failed: if (ff_layout_avoid_mds_available_ds(lseg)) return PNFS_TRY_AGAIN; + trace_pnfs_mds_fallback_read_pagelist(hdr->inode, + hdr->args.offset, hdr->args.count, + IOMODE_READ, NFS_I(hdr->inode)->layout, lseg); return PNFS_NOT_ATTEMPTED; } @@ -1892,6 +1915,9 @@ ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync) out_failed: if (ff_layout_avoid_mds_available_ds(lseg)) return PNFS_TRY_AGAIN; + trace_pnfs_mds_fallback_write_pagelist(hdr->inode, + hdr->args.offset, hdr->args.count, + IOMODE_RW, NFS_I(hdr->inode)->layout, lseg); return PNFS_NOT_ATTEMPTED; } diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c index 19f856f45689..3eda40a320a5 100644 --- a/fs/nfs/flexfilelayout/flexfilelayoutdev.c +++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c @@ -257,7 +257,7 @@ int ff_layout_track_ds_error(struct nfs4_flexfile_layout *flo, if (status == 0) return 0; - if (mirror->mirror_ds == NULL) + if (IS_ERR_OR_NULL(mirror->mirror_ds)) return -EINVAL; dserr = kmalloc(sizeof(*dserr), gfp_flags); diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 0b4a1a974411..8a1758200b57 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -51,6 +51,7 @@ #include "pnfs.h" #include "nfs.h" #include "netns.h" +#include "sysfs.h" #include "nfstrace.h" @@ -208,7 +209,7 @@ static void nfs_set_cache_invalid(struct inode *inode, unsigned long flags) } if (inode->i_mapping->nrpages == 0) - flags &= ~NFS_INO_INVALID_DATA; + flags &= ~(NFS_INO_INVALID_DATA|NFS_INO_DATA_INVAL_DEFER); nfsi->cache_validity |= flags; if (flags & NFS_INO_INVALID_DATA) nfs_fscache_invalidate(inode); @@ -652,7 +653,8 @@ static int nfs_vmtruncate(struct inode * inode, loff_t offset) i_size_write(inode, offset); /* Optimisation */ if (offset == 0) - NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_DATA; + NFS_I(inode)->cache_validity &= ~(NFS_INO_INVALID_DATA | + NFS_INO_DATA_INVAL_DEFER); NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_SIZE; spin_unlock(&inode->i_lock); @@ -1032,6 +1034,10 @@ void nfs_inode_attach_open_context(struct nfs_open_context *ctx) struct nfs_inode *nfsi = NFS_I(inode); spin_lock(&inode->i_lock); + if (list_empty(&nfsi->open_files) && + (nfsi->cache_validity & NFS_INO_DATA_INVAL_DEFER)) + nfsi->cache_validity |= NFS_INO_INVALID_DATA | + NFS_INO_REVAL_FORCED; list_add_tail_rcu(&ctx->list, &nfsi->open_files); spin_unlock(&inode->i_lock); } @@ -1100,6 +1106,7 @@ int nfs_open(struct inode *inode, struct file *filp) nfs_fscache_open_file(inode, filp); return 0; } +EXPORT_SYMBOL_GPL(nfs_open); /* * This function is called whenever some part of NFS notices that @@ -1312,7 +1319,8 @@ int nfs_revalidate_mapping(struct inode *inode, set_bit(NFS_INO_INVALIDATING, bitlock); smp_wmb(); - nfsi->cache_validity &= ~NFS_INO_INVALID_DATA; + nfsi->cache_validity &= ~(NFS_INO_INVALID_DATA| + NFS_INO_DATA_INVAL_DEFER); spin_unlock(&inode->i_lock); trace_nfs_invalidate_mapping_enter(inode); ret = nfs_invalidate_mapping(inode, mapping); @@ -1870,7 +1878,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) dprintk("NFS: change_attr change on server for file %s/%ld\n", inode->i_sb->s_id, inode->i_ino); - } + } else if (!have_delegation) + nfsi->cache_validity |= NFS_INO_DATA_INVAL_DEFER; inode_set_iversion_raw(inode, fattr->change_attr); attr_changed = true; } @@ -2159,12 +2168,8 @@ static int nfs_net_init(struct net *net) static void nfs_net_exit(struct net *net) { - struct nfs_net *nn = net_generic(net, nfs_net_id); - nfs_fs_proc_net_exit(net); - nfs_cleanup_cb_ident_idr(net); - WARN_ON_ONCE(!list_empty(&nn->nfs_client_list)); - WARN_ON_ONCE(!list_empty(&nn->nfs_volume_list)); + nfs_clients_exit(net); } static struct pernet_operations nfs_net_ops = { @@ -2181,6 +2186,10 @@ static int __init init_nfs_fs(void) { int err; + err = nfs_sysfs_init(); + if (err < 0) + goto out10; + err = register_pernet_subsys(&nfs_net_ops); if (err < 0) goto out9; @@ -2244,6 +2253,8 @@ out7: out8: unregister_pernet_subsys(&nfs_net_ops); out9: + nfs_sysfs_exit(); +out10: return err; } @@ -2260,6 +2271,7 @@ static void __exit exit_nfs_fs(void) unregister_nfs_fs(); nfs_fs_proc_exit(); nfsiod_stop(); + nfs_sysfs_exit(); } /* Not quite true; I just maintain it */ diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 498fab72f70b..a2346a2f8361 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -69,8 +69,7 @@ struct nfs_clone_mount { * Maximum number of pages that readdir can use for creating * a vmapped array of pages. */ -#define NFS_MAX_READDIR_PAGES 64 -#define NFS_MAX_READDIR_RAPAGES 8 +#define NFS_MAX_READDIR_PAGES 8 struct nfs_client_initdata { unsigned long init_flags; @@ -82,6 +81,7 @@ struct nfs_client_initdata { struct nfs_subversion *nfs_mod; int proto; u32 minorversion; + unsigned int nconnect; struct net *net; const struct rpc_timeout *timeparms; const struct cred *cred; @@ -123,6 +123,7 @@ struct nfs_parsed_mount_data { char *export_path; int port; unsigned short protocol; + unsigned short nconnect; } nfs_server; void *lsm_opts; @@ -158,6 +159,7 @@ extern void nfs_umount(const struct nfs_mount_request *info); /* client.c */ extern const struct rpc_program nfs_program; extern void nfs_clients_init(struct net *net); +extern void nfs_clients_exit(struct net *net); extern struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *); int nfs_create_rpc_client(struct nfs_client *, const struct nfs_client_initdata *, rpc_authflavor_t); struct nfs_client *nfs_get_client(const struct nfs_client_initdata *); @@ -170,7 +172,6 @@ int nfs_init_server_rpcclient(struct nfs_server *, const struct rpc_timeout *t, struct nfs_server *nfs_alloc_server(void); void nfs_server_copy_userdata(struct nfs_server *, struct nfs_server *); -extern void nfs_cleanup_cb_ident_idr(struct net *); extern void nfs_put_client(struct nfs_client *); extern void nfs_free_client(struct nfs_client *); extern struct nfs_client *nfs4_find_client_ident(struct net *, int); diff --git a/fs/nfs/netns.h b/fs/nfs/netns.h index fc9978c58265..c8374f74dce1 100644 --- a/fs/nfs/netns.h +++ b/fs/nfs/netns.h @@ -15,6 +15,8 @@ struct bl_dev_msg { uint32_t major, minor; }; +struct nfs_netns_client; + struct nfs_net { struct cache_detail *nfs_dns_resolve; struct rpc_pipe *bl_device_pipe; @@ -29,6 +31,7 @@ struct nfs_net { unsigned short nfs_callback_tcpport6; int cb_users[NFS4_MAX_MINOR_VERSION + 1]; #endif + struct nfs_netns_client *nfs_client; spinlock_t nfs_client_lock; ktime_t boot_time; #ifdef CONFIG_PROC_FS diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c index 572794dab4b1..cbc17a203248 100644 --- a/fs/nfs/nfs2xdr.c +++ b/fs/nfs/nfs2xdr.c @@ -151,7 +151,7 @@ static int decode_stat(struct xdr_stream *xdr, enum nfs_stat *status) return 0; out_status: *status = be32_to_cpup(p); - trace_nfs_xdr_status((int)*status); + trace_nfs_xdr_status(xdr, (int)*status); return 0; } diff --git a/fs/nfs/nfs3client.c b/fs/nfs/nfs3client.c index fb0c425b5d45..148ceb74d27c 100644 --- a/fs/nfs/nfs3client.c +++ b/fs/nfs/nfs3client.c @@ -102,6 +102,9 @@ struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv, return ERR_PTR(-EINVAL); cl_init.hostname = buf; + if (mds_clp->cl_nconnect > 1 && ds_proto == XPRT_TRANSPORT_TCP) + cl_init.nconnect = mds_clp->cl_nconnect; + if (mds_srv->flags & NFS_MOUNT_NORESVPORT) set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags); diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index abbbdde97e31..602767850b36 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -343,7 +343,7 @@ static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status) return 0; out_status: *status = be32_to_cpup(p); - trace_nfs_xdr_status((int)*status); + trace_nfs_xdr_status(xdr, (int)*status); return 0; } diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 8a38a254f516..d778dad9a75e 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -312,12 +312,12 @@ extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, const struct nfs_lock_context *l_ctx, fmode_t fmode); +extern int nfs4_proc_get_lease_time(struct nfs_client *clp, + struct nfs_fsinfo *fsinfo); #if defined(CONFIG_NFS_V4_1) extern int nfs41_sequence_done(struct rpc_task *, struct nfs4_sequence_res *); extern int nfs4_proc_create_session(struct nfs_client *, const struct cred *); extern int nfs4_proc_destroy_session(struct nfs4_session *, const struct cred *); -extern int nfs4_proc_get_lease_time(struct nfs_client *clp, - struct nfs_fsinfo *fsinfo); extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync); extern int nfs4_detect_session_trunking(struct nfs_client *clp, diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index 81b9b6d7927a..616393a01c06 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -859,7 +859,8 @@ static int nfs4_set_client(struct nfs_server *server, const size_t addrlen, const char *ip_addr, int proto, const struct rpc_timeout *timeparms, - u32 minorversion, struct net *net) + u32 minorversion, unsigned int nconnect, + struct net *net) { struct nfs_client_initdata cl_init = { .hostname = hostname, @@ -875,6 +876,8 @@ static int nfs4_set_client(struct nfs_server *server, }; struct nfs_client *clp; + if (minorversion > 0 && proto == XPRT_TRANSPORT_TCP) + cl_init.nconnect = nconnect; if (server->flags & NFS_MOUNT_NORESVPORT) set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags); if (server->options & NFS_OPTION_MIGRATION) @@ -941,6 +944,9 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_server *mds_srv, return ERR_PTR(-EINVAL); cl_init.hostname = buf; + if (mds_clp->cl_nconnect > 1 && ds_proto == XPRT_TRANSPORT_TCP) + cl_init.nconnect = mds_clp->cl_nconnect; + if (mds_srv->flags & NFS_MOUNT_NORESVPORT) __set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags); @@ -1074,6 +1080,7 @@ static int nfs4_init_server(struct nfs_server *server, data->nfs_server.protocol, &timeparms, data->minorversion, + data->nfs_server.nconnect, data->net); if (error < 0) return error; @@ -1163,6 +1170,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data, XPRT_TRANSPORT_RDMA, parent_server->client->cl_timeout, parent_client->cl_mvops->minor_version, + parent_client->cl_nconnect, parent_client->cl_net); if (!error) goto init_server; @@ -1176,6 +1184,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data, XPRT_TRANSPORT_TCP, parent_server->client->cl_timeout, parent_client->cl_mvops->minor_version, + parent_client->cl_nconnect, parent_client->cl_net); if (error < 0) goto error; @@ -1271,7 +1280,8 @@ int nfs4_update_server(struct nfs_server *server, const char *hostname, set_bit(NFS_MIG_TSM_POSSIBLE, &server->mig_status); error = nfs4_set_client(server, hostname, sap, salen, buf, clp->cl_proto, clnt->cl_timeout, - clp->cl_minorversion, net); + clp->cl_minorversion, + clp->cl_nconnect, net); clear_bit(NFS_MIG_TSM_POSSIBLE, &server->mig_status); if (error != 0) { nfs_server_insert_lists(server); diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index f4157eb1f69d..96db471ca2e5 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -49,7 +49,7 @@ nfs4_file_open(struct inode *inode, struct file *filp) return err; if ((openflags & O_ACCMODE) == 3) - openflags--; + return nfs_open(inode, filp); /* We can't create new files here */ openflags &= ~(O_CREAT|O_EXCL); @@ -204,7 +204,11 @@ static loff_t nfs42_remap_file_range(struct file *src_file, loff_t src_off, bool same_inode = false; int ret; - if (remap_flags & ~(REMAP_FILE_DEDUP | REMAP_FILE_ADVISORY)) + /* NFS does not support deduplication. */ + if (remap_flags & REMAP_FILE_DEDUP) + return -EOPNOTSUPP; + + if (remap_flags & ~REMAP_FILE_ADVISORY) return -EINVAL; /* check alignment w.r.t. clone_blksize */ diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 6418cb6c079b..39896afc6edf 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -428,6 +428,22 @@ static int nfs4_delay(long *timeout, bool interruptible) return nfs4_delay_killable(timeout); } +static const nfs4_stateid * +nfs4_recoverable_stateid(const nfs4_stateid *stateid) +{ + if (!stateid) + return NULL; + switch (stateid->type) { + case NFS4_OPEN_STATEID_TYPE: + case NFS4_LOCK_STATEID_TYPE: + case NFS4_DELEGATION_STATEID_TYPE: + return stateid; + default: + break; + } + return NULL; +} + /* This is the error handling routine for processes that are allowed * to sleep. */ @@ -436,7 +452,7 @@ static int nfs4_do_handle_exception(struct nfs_server *server, { struct nfs_client *clp = server->nfs_client; struct nfs4_state *state = exception->state; - const nfs4_stateid *stateid = exception->stateid; + const nfs4_stateid *stateid; struct inode *inode = exception->inode; int ret = errorcode; @@ -444,8 +460,9 @@ static int nfs4_do_handle_exception(struct nfs_server *server, exception->recovering = 0; exception->retry = 0; + stateid = nfs4_recoverable_stateid(exception->stateid); if (stateid == NULL && state != NULL) - stateid = &state->stateid; + stateid = nfs4_recoverable_stateid(&state->stateid); switch(errorcode) { case 0: @@ -1165,6 +1182,18 @@ static bool nfs4_clear_cap_atomic_open_v1(struct nfs_server *server, return true; } +static fmode_t _nfs4_ctx_to_accessmode(const struct nfs_open_context *ctx) +{ + return ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); +} + +static fmode_t _nfs4_ctx_to_openmode(const struct nfs_open_context *ctx) +{ + fmode_t ret = ctx->mode & (FMODE_READ|FMODE_WRITE); + + return (ctx->mode & FMODE_EXEC) ? FMODE_READ | ret : ret; +} + static u32 nfs4_map_atomic_open_share(struct nfs_server *server, fmode_t fmode, int openflags) @@ -2900,14 +2929,13 @@ static unsigned nfs4_exclusive_attrset(struct nfs4_opendata *opendata, } static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, - fmode_t fmode, - int flags, - struct nfs_open_context *ctx) + int flags, struct nfs_open_context *ctx) { struct nfs4_state_owner *sp = opendata->owner; struct nfs_server *server = sp->so_server; struct dentry *dentry; struct nfs4_state *state; + fmode_t acc_mode = _nfs4_ctx_to_accessmode(ctx); unsigned int seq; int ret; @@ -2946,7 +2974,8 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, /* Parse layoutget results before we check for access */ pnfs_parse_lgopen(state->inode, opendata->lgp, ctx); - ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags); + ret = nfs4_opendata_access(sp->so_cred, opendata, state, + acc_mode, flags); if (ret != 0) goto out; @@ -2978,7 +3007,7 @@ static int _nfs4_do_open(struct inode *dir, struct dentry *dentry = ctx->dentry; const struct cred *cred = ctx->cred; struct nfs4_threshold **ctx_th = &ctx->mdsthreshold; - fmode_t fmode = ctx->mode & (FMODE_READ|FMODE_WRITE|FMODE_EXEC); + fmode_t fmode = _nfs4_ctx_to_openmode(ctx); enum open_claim_type4 claim = NFS4_OPEN_CLAIM_NULL; struct iattr *sattr = c->sattr; struct nfs4_label *label = c->label; @@ -3024,7 +3053,7 @@ static int _nfs4_do_open(struct inode *dir, if (d_really_is_positive(dentry)) opendata->state = nfs4_get_open_state(d_inode(dentry), sp); - status = _nfs4_open_and_get_state(opendata, fmode, flags, ctx); + status = _nfs4_open_and_get_state(opendata, flags, ctx); if (status != 0) goto err_free_label; state = ctx->state; @@ -3594,9 +3623,9 @@ static void nfs4_close_context(struct nfs_open_context *ctx, int is_sync) if (ctx->state == NULL) return; if (is_sync) - nfs4_close_sync(ctx->state, ctx->mode); + nfs4_close_sync(ctx->state, _nfs4_ctx_to_openmode(ctx)); else - nfs4_close_state(ctx->state, ctx->mode); + nfs4_close_state(ctx->state, _nfs4_ctx_to_openmode(ctx)); } #define FATTR4_WORD1_NFS40_MASK (2*FATTR4_WORD1_MOUNTED_ON_FILEID - 1UL) @@ -5980,7 +6009,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, .rpc_message = &msg, .callback_ops = &nfs4_setclientid_ops, .callback_data = &setclientid, - .flags = RPC_TASK_TIMEOUT, + .flags = RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN, }; int status; @@ -6046,7 +6075,8 @@ int nfs4_proc_setclientid_confirm(struct nfs_client *clp, dprintk("NFS call setclientid_confirm auth=%s, (client ID %llx)\n", clp->cl_rpcclient->cl_auth->au_ops->au_name, clp->cl_clientid); - status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); + status = rpc_call_sync(clp->cl_rpcclient, &msg, + RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN); trace_nfs4_setclientid_confirm(clp, status); dprintk("NFS reply setclientid_confirm: %d\n", status); return status; @@ -7627,7 +7657,7 @@ static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct NFS_SP4_MACH_CRED_SECINFO, &clnt, &msg); status = nfs4_call_sync(clnt, NFS_SERVER(dir), &msg, &args.seq_args, - &res.seq_res, 0); + &res.seq_res, RPC_TASK_NO_ROUND_ROBIN); dprintk("NFS reply secinfo: %d\n", status); put_cred(cred); @@ -7965,7 +7995,7 @@ nfs4_run_exchange_id(struct nfs_client *clp, const struct cred *cred, .rpc_client = clp->cl_rpcclient, .callback_ops = &nfs4_exchange_id_call_ops, .rpc_message = &msg, - .flags = RPC_TASK_TIMEOUT, + .flags = RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN, }; struct nfs41_exchange_id_data *calldata; int status; @@ -8190,7 +8220,8 @@ static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, }; int status; - status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); + status = rpc_call_sync(clp->cl_rpcclient, &msg, + RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN); trace_nfs4_destroy_clientid(clp, status); if (status) dprintk("NFS: Got error %d from the server %s on " @@ -8241,6 +8272,8 @@ out: return ret; } +#endif /* CONFIG_NFS_V4_1 */ + struct nfs4_get_lease_time_data { struct nfs4_get_lease_time_args *args; struct nfs4_get_lease_time_res *res; @@ -8273,7 +8306,7 @@ static void nfs4_get_lease_time_done(struct rpc_task *task, void *calldata) (struct nfs4_get_lease_time_data *)calldata; dprintk("--> %s\n", __func__); - if (!nfs41_sequence_done(task, &data->res->lr_seq_res)) + if (!nfs4_sequence_done(task, &data->res->lr_seq_res)) return; switch (task->tk_status) { case -NFS4ERR_DELAY: @@ -8331,6 +8364,8 @@ int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo) return status; } +#ifdef CONFIG_NFS_V4_1 + /* * Initialize the values to be used by the client in CREATE_SESSION * If nfs4_init_session set the fore channel request and response sizes, @@ -8345,6 +8380,7 @@ static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args, { unsigned int max_rqst_sz, max_resp_sz; unsigned int max_bc_payload = rpc_max_bc_payload(clnt); + unsigned int max_bc_slots = rpc_num_bc_slots(clnt); max_rqst_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxwrite_overhead; max_resp_sz = NFS_MAX_FILE_IO_SIZE + nfs41_maxread_overhead; @@ -8367,6 +8403,8 @@ static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args, args->bc_attrs.max_resp_sz_cached = 0; args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; args->bc_attrs.max_reqs = max_t(unsigned short, max_session_cb_slots, 1); + if (args->bc_attrs.max_reqs > max_bc_slots) + args->bc_attrs.max_reqs = max_bc_slots; dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", @@ -8469,7 +8507,8 @@ static int _nfs4_proc_create_session(struct nfs_client *clp, nfs4_init_channel_attrs(&args, clp->cl_rpcclient); args.flags = (SESSION4_PERSIST | SESSION4_BACK_CHAN); - status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); + status = rpc_call_sync(session->clp->cl_rpcclient, &msg, + RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN); trace_nfs4_create_session(clp, status); switch (status) { @@ -8545,7 +8584,8 @@ int nfs4_proc_destroy_session(struct nfs4_session *session, if (!test_and_clear_bit(NFS4_SESSION_ESTABLISHED, &session->session_state)) return 0; - status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); + status = rpc_call_sync(session->clp->cl_rpcclient, &msg, + RPC_TASK_TIMEOUT | RPC_TASK_NO_ROUND_ROBIN); trace_nfs4_destroy_session(session->clp, status); if (status) @@ -8799,7 +8839,7 @@ static int nfs41_proc_reclaim_complete(struct nfs_client *clp, .rpc_client = clp->cl_rpcclient, .rpc_message = &msg, .callback_ops = &nfs4_reclaim_complete_call_ops, - .flags = RPC_TASK_ASYNC, + .flags = RPC_TASK_ASYNC | RPC_TASK_NO_ROUND_ROBIN, }; int status = -ENOMEM; @@ -9318,7 +9358,7 @@ _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, dprintk("--> %s\n", __func__); status = nfs4_call_sync(clnt, server, &msg, &args.seq_args, - &res.seq_res, 0); + &res.seq_res, RPC_TASK_NO_ROUND_ROBIN); dprintk("<-- %s status=%d\n", __func__, status); put_cred(cred); diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index e2e3c4f04d3e..9afd051a4876 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -87,6 +87,27 @@ const nfs4_stateid current_stateid = { static DEFINE_MUTEX(nfs_clid_init_mutex); +static int nfs4_setup_state_renewal(struct nfs_client *clp) +{ + int status; + struct nfs_fsinfo fsinfo; + unsigned long now; + + if (!test_bit(NFS_CS_CHECK_LEASE_TIME, &clp->cl_res_state)) { + nfs4_schedule_state_renewal(clp); + return 0; + } + + now = jiffies; + status = nfs4_proc_get_lease_time(clp, &fsinfo); + if (status == 0) { + nfs4_set_lease_period(clp, fsinfo.lease_time * HZ, now); + nfs4_schedule_state_renewal(clp); + } + + return status; +} + int nfs4_init_clientid(struct nfs_client *clp, const struct cred *cred) { struct nfs4_setclientid_res clid = { @@ -114,7 +135,7 @@ do_confirm: if (status != 0) goto out; clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state); - nfs4_schedule_state_renewal(clp); + nfs4_setup_state_renewal(clp); out: return status; } @@ -286,34 +307,13 @@ static int nfs4_begin_drain_session(struct nfs_client *clp) #if defined(CONFIG_NFS_V4_1) -static int nfs41_setup_state_renewal(struct nfs_client *clp) -{ - int status; - struct nfs_fsinfo fsinfo; - unsigned long now; - - if (!test_bit(NFS_CS_CHECK_LEASE_TIME, &clp->cl_res_state)) { - nfs4_schedule_state_renewal(clp); - return 0; - } - - now = jiffies; - status = nfs4_proc_get_lease_time(clp, &fsinfo); - if (status == 0) { - nfs4_set_lease_period(clp, fsinfo.lease_time * HZ, now); - nfs4_schedule_state_renewal(clp); - } - - return status; -} - static void nfs41_finish_session_reset(struct nfs_client *clp) { clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state); clear_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state); /* create_session negotiated new slot table */ clear_bit(NFS4CLNT_BIND_CONN_TO_SESSION, &clp->cl_state); - nfs41_setup_state_renewal(clp); + nfs4_setup_state_renewal(clp); } int nfs41_init_clientid(struct nfs_client *clp, const struct cred *cred) @@ -1064,8 +1064,7 @@ int nfs4_select_rw_stateid(struct nfs4_state *state, * choose to use. */ goto out; - nfs4_copy_open_stateid(dst, state); - ret = 0; + ret = nfs4_copy_open_stateid(dst, state) ? 0 : -EAGAIN; out: if (nfs_server_capable(state->inode, NFS_CAP_STATEID_NFSV41)) dst->seqid = 0; diff --git a/fs/nfs/nfs4trace.c b/fs/nfs/nfs4trace.c index e9fb3e50a999..1a8f376b3f73 100644 --- a/fs/nfs/nfs4trace.c +++ b/fs/nfs/nfs4trace.c @@ -16,4 +16,12 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(nfs4_pnfs_read); EXPORT_TRACEPOINT_SYMBOL_GPL(nfs4_pnfs_write); EXPORT_TRACEPOINT_SYMBOL_GPL(nfs4_pnfs_commit_ds); + +EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_pg_init_read); +EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_pg_init_write); +EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_pg_get_mirror_count); +EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_read_done); +EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_write_done); +EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_read_pagelist); +EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_write_pagelist); #endif diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h index cd1a5c08da9a..b2f395fa7350 100644 --- a/fs/nfs/nfs4trace.h +++ b/fs/nfs/nfs4trace.h @@ -156,7 +156,7 @@ TRACE_DEFINE_ENUM(NFS4ERR_WRONG_TYPE); TRACE_DEFINE_ENUM(NFS4ERR_XDEV); #define show_nfsv4_errors(error) \ - __print_symbolic(-(error), \ + __print_symbolic(error, \ { NFS4_OK, "OK" }, \ /* Mapped by nfs4_stat_to_errno() */ \ { EPERM, "EPERM" }, \ @@ -348,7 +348,7 @@ DECLARE_EVENT_CLASS(nfs4_clientid_event, TP_STRUCT__entry( __string(dstaddr, clp->cl_hostname) - __field(int, error) + __field(unsigned long, error) ), TP_fast_assign( @@ -357,8 +357,8 @@ DECLARE_EVENT_CLASS(nfs4_clientid_event, ), TP_printk( - "error=%d (%s) dstaddr=%s", - __entry->error, + "error=%ld (%s) dstaddr=%s", + -__entry->error, show_nfsv4_errors(__entry->error), __get_str(dstaddr) ) @@ -420,7 +420,7 @@ TRACE_EVENT(nfs4_sequence_done, __field(unsigned int, highest_slotid) __field(unsigned int, target_highest_slotid) __field(unsigned int, status_flags) - __field(int, error) + __field(unsigned long, error) ), TP_fast_assign( @@ -435,10 +435,10 @@ TRACE_EVENT(nfs4_sequence_done, __entry->error = res->sr_status; ), TP_printk( - "error=%d (%s) session=0x%08x slot_nr=%u seq_nr=%u " + "error=%ld (%s) session=0x%08x slot_nr=%u seq_nr=%u " "highest_slotid=%u target_highest_slotid=%u " "status_flags=%u (%s)", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), __entry->session, __entry->slot_nr, @@ -467,7 +467,7 @@ TRACE_EVENT(nfs4_cb_sequence, __field(unsigned int, seq_nr) __field(unsigned int, highest_slotid) __field(unsigned int, cachethis) - __field(int, error) + __field(unsigned long, error) ), TP_fast_assign( @@ -476,13 +476,13 @@ TRACE_EVENT(nfs4_cb_sequence, __entry->seq_nr = args->csa_sequenceid; __entry->highest_slotid = args->csa_highestslotid; __entry->cachethis = args->csa_cachethis; - __entry->error = -be32_to_cpu(status); + __entry->error = be32_to_cpu(status); ), TP_printk( - "error=%d (%s) session=0x%08x slot_nr=%u seq_nr=%u " + "error=%ld (%s) session=0x%08x slot_nr=%u seq_nr=%u " "highest_slotid=%u", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), __entry->session, __entry->slot_nr, @@ -490,6 +490,44 @@ TRACE_EVENT(nfs4_cb_sequence, __entry->highest_slotid ) ); + +TRACE_EVENT(nfs4_cb_seqid_err, + TP_PROTO( + const struct cb_sequenceargs *args, + __be32 status + ), + TP_ARGS(args, status), + + TP_STRUCT__entry( + __field(unsigned int, session) + __field(unsigned int, slot_nr) + __field(unsigned int, seq_nr) + __field(unsigned int, highest_slotid) + __field(unsigned int, cachethis) + __field(unsigned long, error) + ), + + TP_fast_assign( + __entry->session = nfs_session_id_hash(&args->csa_sessionid); + __entry->slot_nr = args->csa_slotid; + __entry->seq_nr = args->csa_sequenceid; + __entry->highest_slotid = args->csa_highestslotid; + __entry->cachethis = args->csa_cachethis; + __entry->error = be32_to_cpu(status); + ), + + TP_printk( + "error=%ld (%s) session=0x%08x slot_nr=%u seq_nr=%u " + "highest_slotid=%u", + -__entry->error, + show_nfsv4_errors(__entry->error), + __entry->session, + __entry->slot_nr, + __entry->seq_nr, + __entry->highest_slotid + ) +); + #endif /* CONFIG_NFS_V4_1 */ TRACE_EVENT(nfs4_setup_sequence, @@ -526,26 +564,37 @@ TRACE_EVENT(nfs4_setup_sequence, TRACE_EVENT(nfs4_xdr_status, TP_PROTO( + const struct xdr_stream *xdr, u32 op, int error ), - TP_ARGS(op, error), + TP_ARGS(xdr, op, error), TP_STRUCT__entry( + __field(unsigned int, task_id) + __field(unsigned int, client_id) + __field(u32, xid) __field(u32, op) - __field(int, error) + __field(unsigned long, error) ), TP_fast_assign( + const struct rpc_rqst *rqstp = xdr->rqst; + const struct rpc_task *task = rqstp->rq_task; + + __entry->task_id = task->tk_pid; + __entry->client_id = task->tk_client->cl_clid; + __entry->xid = be32_to_cpu(rqstp->rq_xid); __entry->op = op; - __entry->error = -error; + __entry->error = error; ), TP_printk( - "operation %d: nfs status %d (%s)", - __entry->op, - __entry->error, show_nfsv4_errors(__entry->error) + "task:%u@%d xid=0x%08x error=%ld (%s) operation=%u", + __entry->task_id, __entry->client_id, __entry->xid, + -__entry->error, show_nfsv4_errors(__entry->error), + __entry->op ) ); @@ -559,7 +608,7 @@ DECLARE_EVENT_CLASS(nfs4_open_event, TP_ARGS(ctx, flags, error), TP_STRUCT__entry( - __field(int, error) + __field(unsigned long, error) __field(unsigned int, flags) __field(unsigned int, fmode) __field(dev_t, dev) @@ -577,7 +626,7 @@ DECLARE_EVENT_CLASS(nfs4_open_event, const struct nfs4_state *state = ctx->state; const struct inode *inode = NULL; - __entry->error = error; + __entry->error = -error; __entry->flags = flags; __entry->fmode = (__force unsigned int)ctx->mode; __entry->dev = ctx->dentry->d_sb->s_dev; @@ -609,11 +658,11 @@ DECLARE_EVENT_CLASS(nfs4_open_event, ), TP_printk( - "error=%d (%s) flags=%d (%s) fmode=%s " + "error=%ld (%s) flags=%d (%s) fmode=%s " "fileid=%02x:%02x:%llu fhandle=0x%08x " "name=%02x:%02x:%llu/%s stateid=%d:0x%08x " "openstateid=%d:0x%08x", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), __entry->flags, show_open_flags(__entry->flags), @@ -695,7 +744,7 @@ TRACE_EVENT(nfs4_close, __field(u32, fhandle) __field(u64, fileid) __field(unsigned int, fmode) - __field(int, error) + __field(unsigned long, error) __field(int, stateid_seq) __field(u32, stateid_hash) ), @@ -715,9 +764,9 @@ TRACE_EVENT(nfs4_close, ), TP_printk( - "error=%d (%s) fmode=%s fileid=%02x:%02x:%llu " + "error=%ld (%s) fmode=%s fileid=%02x:%02x:%llu " "fhandle=0x%08x openstateid=%d:0x%08x", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), __entry->fmode ? show_fmode_flags(__entry->fmode) : "closed", @@ -757,7 +806,7 @@ DECLARE_EVENT_CLASS(nfs4_lock_event, TP_ARGS(request, state, cmd, error), TP_STRUCT__entry( - __field(int, error) + __field(unsigned long, error) __field(int, cmd) __field(char, type) __field(loff_t, start) @@ -787,10 +836,10 @@ DECLARE_EVENT_CLASS(nfs4_lock_event, ), TP_printk( - "error=%d (%s) cmd=%s:%s range=%lld:%lld " + "error=%ld (%s) cmd=%s:%s range=%lld:%lld " "fileid=%02x:%02x:%llu fhandle=0x%08x " "stateid=%d:0x%08x", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), show_lock_cmd(__entry->cmd), show_lock_type(__entry->type), @@ -827,7 +876,7 @@ TRACE_EVENT(nfs4_set_lock, TP_ARGS(request, state, lockstateid, cmd, error), TP_STRUCT__entry( - __field(int, error) + __field(unsigned long, error) __field(int, cmd) __field(char, type) __field(loff_t, start) @@ -863,10 +912,10 @@ TRACE_EVENT(nfs4_set_lock, ), TP_printk( - "error=%d (%s) cmd=%s:%s range=%lld:%lld " + "error=%ld (%s) cmd=%s:%s range=%lld:%lld " "fileid=%02x:%02x:%llu fhandle=0x%08x " "stateid=%d:0x%08x lockstateid=%d:0x%08x", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), show_lock_cmd(__entry->cmd), show_lock_type(__entry->type), @@ -932,7 +981,7 @@ TRACE_EVENT(nfs4_delegreturn_exit, TP_STRUCT__entry( __field(dev_t, dev) __field(u32, fhandle) - __field(int, error) + __field(unsigned long, error) __field(int, stateid_seq) __field(u32, stateid_hash) ), @@ -948,9 +997,9 @@ TRACE_EVENT(nfs4_delegreturn_exit, ), TP_printk( - "error=%d (%s) dev=%02x:%02x fhandle=0x%08x " + "error=%ld (%s) dev=%02x:%02x fhandle=0x%08x " "stateid=%d:0x%08x", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), __entry->fhandle, @@ -969,7 +1018,7 @@ DECLARE_EVENT_CLASS(nfs4_test_stateid_event, TP_ARGS(state, lsp, error), TP_STRUCT__entry( - __field(int, error) + __field(unsigned long, error) __field(dev_t, dev) __field(u32, fhandle) __field(u64, fileid) @@ -991,9 +1040,9 @@ DECLARE_EVENT_CLASS(nfs4_test_stateid_event, ), TP_printk( - "error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " + "error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " "stateid=%d:0x%08x", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->fileid, @@ -1026,7 +1075,7 @@ DECLARE_EVENT_CLASS(nfs4_lookup_event, TP_STRUCT__entry( __field(dev_t, dev) - __field(int, error) + __field(unsigned long, error) __field(u64, dir) __string(name, name->name) ), @@ -1034,13 +1083,13 @@ DECLARE_EVENT_CLASS(nfs4_lookup_event, TP_fast_assign( __entry->dev = dir->i_sb->s_dev; __entry->dir = NFS_FILEID(dir); - __entry->error = error; + __entry->error = -error; __assign_str(name, name->name); ), TP_printk( - "error=%d (%s) name=%02x:%02x:%llu/%s", - __entry->error, + "error=%ld (%s) name=%02x:%02x:%llu/%s", + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->dir, @@ -1076,7 +1125,7 @@ TRACE_EVENT(nfs4_lookupp, TP_STRUCT__entry( __field(dev_t, dev) __field(u64, ino) - __field(int, error) + __field(unsigned long, error) ), TP_fast_assign( @@ -1086,8 +1135,8 @@ TRACE_EVENT(nfs4_lookupp, ), TP_printk( - "error=%d (%s) inode=%02x:%02x:%llu", - __entry->error, + "error=%ld (%s) inode=%02x:%02x:%llu", + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->ino @@ -1107,7 +1156,7 @@ TRACE_EVENT(nfs4_rename, TP_STRUCT__entry( __field(dev_t, dev) - __field(int, error) + __field(unsigned long, error) __field(u64, olddir) __string(oldname, oldname->name) __field(u64, newdir) @@ -1124,9 +1173,9 @@ TRACE_EVENT(nfs4_rename, ), TP_printk( - "error=%d (%s) oldname=%02x:%02x:%llu/%s " + "error=%ld (%s) oldname=%02x:%02x:%llu/%s " "newname=%02x:%02x:%llu/%s", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->olddir, @@ -1149,19 +1198,19 @@ DECLARE_EVENT_CLASS(nfs4_inode_event, __field(dev_t, dev) __field(u32, fhandle) __field(u64, fileid) - __field(int, error) + __field(unsigned long, error) ), TP_fast_assign( __entry->dev = inode->i_sb->s_dev; __entry->fileid = NFS_FILEID(inode); __entry->fhandle = nfs_fhandle_hash(NFS_FH(inode)); - __entry->error = error; + __entry->error = error < 0 ? -error : 0; ), TP_printk( - "error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x", - __entry->error, + "error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x", + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->fileid, @@ -1200,7 +1249,7 @@ DECLARE_EVENT_CLASS(nfs4_inode_stateid_event, __field(dev_t, dev) __field(u32, fhandle) __field(u64, fileid) - __field(int, error) + __field(unsigned long, error) __field(int, stateid_seq) __field(u32, stateid_hash) ), @@ -1217,9 +1266,9 @@ DECLARE_EVENT_CLASS(nfs4_inode_stateid_event, ), TP_printk( - "error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " + "error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " "stateid=%d:0x%08x", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->fileid, @@ -1257,7 +1306,7 @@ DECLARE_EVENT_CLASS(nfs4_getattr_event, __field(u32, fhandle) __field(u64, fileid) __field(unsigned int, valid) - __field(int, error) + __field(unsigned long, error) ), TP_fast_assign( @@ -1269,9 +1318,9 @@ DECLARE_EVENT_CLASS(nfs4_getattr_event, ), TP_printk( - "error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " + "error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " "valid=%s", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->fileid, @@ -1304,7 +1353,7 @@ DECLARE_EVENT_CLASS(nfs4_inode_callback_event, TP_ARGS(clp, fhandle, inode, error), TP_STRUCT__entry( - __field(int, error) + __field(unsigned long, error) __field(dev_t, dev) __field(u32, fhandle) __field(u64, fileid) @@ -1325,9 +1374,9 @@ DECLARE_EVENT_CLASS(nfs4_inode_callback_event, ), TP_printk( - "error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " + "error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " "dstaddr=%s", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->fileid, @@ -1359,7 +1408,7 @@ DECLARE_EVENT_CLASS(nfs4_inode_stateid_callback_event, TP_ARGS(clp, fhandle, inode, stateid, error), TP_STRUCT__entry( - __field(int, error) + __field(unsigned long, error) __field(dev_t, dev) __field(u32, fhandle) __field(u64, fileid) @@ -1386,9 +1435,9 @@ DECLARE_EVENT_CLASS(nfs4_inode_stateid_callback_event, ), TP_printk( - "error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " + "error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " "stateid=%d:0x%08x dstaddr=%s", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->fileid, @@ -1422,7 +1471,7 @@ DECLARE_EVENT_CLASS(nfs4_idmap_event, TP_ARGS(name, len, id, error), TP_STRUCT__entry( - __field(int, error) + __field(unsigned long, error) __field(u32, id) __dynamic_array(char, name, len > 0 ? len + 1 : 1) ), @@ -1437,8 +1486,8 @@ DECLARE_EVENT_CLASS(nfs4_idmap_event, ), TP_printk( - "error=%d id=%u name=%s", - __entry->error, + "error=%ld (%s) id=%u name=%s", + -__entry->error, show_nfsv4_errors(__entry->error), __entry->id, __get_str(name) ) @@ -1471,7 +1520,7 @@ DECLARE_EVENT_CLASS(nfs4_read_event, __field(u64, fileid) __field(loff_t, offset) __field(size_t, count) - __field(int, error) + __field(unsigned long, error) __field(int, stateid_seq) __field(u32, stateid_hash) ), @@ -1485,7 +1534,7 @@ DECLARE_EVENT_CLASS(nfs4_read_event, __entry->fhandle = nfs_fhandle_hash(NFS_FH(inode)); __entry->offset = hdr->args.offset; __entry->count = hdr->args.count; - __entry->error = error; + __entry->error = error < 0 ? -error : 0; __entry->stateid_seq = be32_to_cpu(state->stateid.seqid); __entry->stateid_hash = @@ -1493,9 +1542,9 @@ DECLARE_EVENT_CLASS(nfs4_read_event, ), TP_printk( - "error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " + "error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " "offset=%lld count=%zu stateid=%d:0x%08x", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->fileid, @@ -1531,7 +1580,7 @@ DECLARE_EVENT_CLASS(nfs4_write_event, __field(u64, fileid) __field(loff_t, offset) __field(size_t, count) - __field(int, error) + __field(unsigned long, error) __field(int, stateid_seq) __field(u32, stateid_hash) ), @@ -1545,7 +1594,7 @@ DECLARE_EVENT_CLASS(nfs4_write_event, __entry->fhandle = nfs_fhandle_hash(NFS_FH(inode)); __entry->offset = hdr->args.offset; __entry->count = hdr->args.count; - __entry->error = error; + __entry->error = error < 0 ? -error : 0; __entry->stateid_seq = be32_to_cpu(state->stateid.seqid); __entry->stateid_hash = @@ -1553,9 +1602,9 @@ DECLARE_EVENT_CLASS(nfs4_write_event, ), TP_printk( - "error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " + "error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " "offset=%lld count=%zu stateid=%d:0x%08x", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->fileid, @@ -1592,7 +1641,7 @@ DECLARE_EVENT_CLASS(nfs4_commit_event, __field(u64, fileid) __field(loff_t, offset) __field(size_t, count) - __field(int, error) + __field(unsigned long, error) ), TP_fast_assign( @@ -1606,9 +1655,9 @@ DECLARE_EVENT_CLASS(nfs4_commit_event, ), TP_printk( - "error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " + "error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " "offset=%lld count=%zu", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->fileid, @@ -1656,7 +1705,7 @@ TRACE_EVENT(nfs4_layoutget, __field(u32, iomode) __field(u64, offset) __field(u64, count) - __field(int, error) + __field(unsigned long, error) __field(int, stateid_seq) __field(u32, stateid_hash) __field(int, layoutstateid_seq) @@ -1689,10 +1738,10 @@ TRACE_EVENT(nfs4_layoutget, ), TP_printk( - "error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " + "error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " "iomode=%s offset=%llu count=%llu stateid=%d:0x%08x " "layoutstateid=%d:0x%08x", - __entry->error, + -__entry->error, show_nfsv4_errors(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->fileid, @@ -1722,6 +1771,7 @@ TRACE_DEFINE_ENUM(PNFS_UPDATE_LAYOUT_BLOCKED); TRACE_DEFINE_ENUM(PNFS_UPDATE_LAYOUT_INVALID_OPEN); TRACE_DEFINE_ENUM(PNFS_UPDATE_LAYOUT_RETRY); TRACE_DEFINE_ENUM(PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET); +TRACE_DEFINE_ENUM(PNFS_UPDATE_LAYOUT_EXIT); #define show_pnfs_update_layout_reason(reason) \ __print_symbolic(reason, \ @@ -1737,7 +1787,8 @@ TRACE_DEFINE_ENUM(PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET); { PNFS_UPDATE_LAYOUT_BLOCKED, "layouts blocked" }, \ { PNFS_UPDATE_LAYOUT_INVALID_OPEN, "invalid open" }, \ { PNFS_UPDATE_LAYOUT_RETRY, "retrying" }, \ - { PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET, "sent layoutget" }) + { PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET, "sent layoutget" }, \ + { PNFS_UPDATE_LAYOUT_EXIT, "exit" }) TRACE_EVENT(pnfs_update_layout, TP_PROTO(struct inode *inode, @@ -1796,6 +1847,78 @@ TRACE_EVENT(pnfs_update_layout, ) ); +DECLARE_EVENT_CLASS(pnfs_layout_event, + TP_PROTO(struct inode *inode, + loff_t pos, + u64 count, + enum pnfs_iomode iomode, + struct pnfs_layout_hdr *lo, + struct pnfs_layout_segment *lseg + ), + TP_ARGS(inode, pos, count, iomode, lo, lseg), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(u64, fileid) + __field(u32, fhandle) + __field(loff_t, pos) + __field(u64, count) + __field(enum pnfs_iomode, iomode) + __field(int, layoutstateid_seq) + __field(u32, layoutstateid_hash) + __field(long, lseg) + ), + TP_fast_assign( + __entry->dev = inode->i_sb->s_dev; + __entry->fileid = NFS_FILEID(inode); + __entry->fhandle = nfs_fhandle_hash(NFS_FH(inode)); + __entry->pos = pos; + __entry->count = count; + __entry->iomode = iomode; + if (lo != NULL) { + __entry->layoutstateid_seq = + be32_to_cpu(lo->plh_stateid.seqid); + __entry->layoutstateid_hash = + nfs_stateid_hash(&lo->plh_stateid); + } else { + __entry->layoutstateid_seq = 0; + __entry->layoutstateid_hash = 0; + } + __entry->lseg = (long)lseg; + ), + TP_printk( + "fileid=%02x:%02x:%llu fhandle=0x%08x " + "iomode=%s pos=%llu count=%llu " + "layoutstateid=%d:0x%08x lseg=0x%lx", + MAJOR(__entry->dev), MINOR(__entry->dev), + (unsigned long long)__entry->fileid, + __entry->fhandle, + show_pnfs_iomode(__entry->iomode), + (unsigned long long)__entry->pos, + (unsigned long long)__entry->count, + __entry->layoutstateid_seq, __entry->layoutstateid_hash, + __entry->lseg + ) +); + +#define DEFINE_PNFS_LAYOUT_EVENT(name) \ + DEFINE_EVENT(pnfs_layout_event, name, \ + TP_PROTO(struct inode *inode, \ + loff_t pos, \ + u64 count, \ + enum pnfs_iomode iomode, \ + struct pnfs_layout_hdr *lo, \ + struct pnfs_layout_segment *lseg \ + ), \ + TP_ARGS(inode, pos, count, iomode, lo, lseg)) + +DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_pg_init_read); +DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_pg_init_write); +DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_pg_get_mirror_count); +DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_read_done); +DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_write_done); +DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_read_pagelist); +DEFINE_PNFS_LAYOUT_EVENT(pnfs_mds_fallback_write_pagelist); + #endif /* CONFIG_NFS_V4_1 */ #endif /* _TRACE_NFS4_H */ diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 602446158bfb..46a8d636d151 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -837,6 +837,7 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, #define NFS4_dec_sequence_sz \ (compound_decode_hdr_maxsz + \ decode_sequence_maxsz) +#endif #define NFS4_enc_get_lease_time_sz (compound_encode_hdr_maxsz + \ encode_sequence_maxsz + \ encode_putrootfh_maxsz + \ @@ -845,6 +846,7 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req, decode_sequence_maxsz + \ decode_putrootfh_maxsz + \ decode_fsinfo_maxsz) +#if defined(CONFIG_NFS_V4_1) #define NFS4_enc_reclaim_complete_sz (compound_encode_hdr_maxsz + \ encode_sequence_maxsz + \ encode_reclaim_complete_maxsz) @@ -2957,6 +2959,8 @@ static void nfs4_xdr_enc_sequence(struct rpc_rqst *req, struct xdr_stream *xdr, encode_nops(&hdr); } +#endif + /* * a GET_LEASE_TIME request */ @@ -2977,6 +2981,8 @@ static void nfs4_xdr_enc_get_lease_time(struct rpc_rqst *req, encode_nops(&hdr); } +#ifdef CONFIG_NFS_V4_1 + /* * a RECLAIM_COMPLETE request */ @@ -3187,7 +3193,7 @@ static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected, return true; out_status: nfserr = be32_to_cpup(p); - trace_nfs4_xdr_status(opnum, nfserr); + trace_nfs4_xdr_status(xdr, opnum, nfserr); *nfs_retval = nfs4_stat_to_errno(nfserr); return true; out_bad_operation: @@ -3427,7 +3433,7 @@ static int decode_attr_lease_time(struct xdr_stream *xdr, uint32_t *bitmap, uint *res = be32_to_cpup(p); bitmap[0] &= ~FATTR4_WORD0_LEASE_TIME; } - dprintk("%s: file size=%u\n", __func__, (unsigned int)*res); + dprintk("%s: lease time=%u\n", __func__, (unsigned int)*res); return 0; } @@ -7122,6 +7128,8 @@ static int nfs4_xdr_dec_sequence(struct rpc_rqst *rqstp, return status; } +#endif + /* * Decode GET_LEASE_TIME response */ @@ -7143,6 +7151,8 @@ static int nfs4_xdr_dec_get_lease_time(struct rpc_rqst *rqstp, return status; } +#ifdef CONFIG_NFS_V4_1 + /* * Decode RECLAIM_COMPLETE response */ @@ -7551,7 +7561,7 @@ const struct rpc_procinfo nfs4_procedures[] = { PROC41(CREATE_SESSION, enc_create_session, dec_create_session), PROC41(DESTROY_SESSION, enc_destroy_session, dec_destroy_session), PROC41(SEQUENCE, enc_sequence, dec_sequence), - PROC41(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), + PROC(GET_LEASE_TIME, enc_get_lease_time, dec_get_lease_time), PROC41(RECLAIM_COMPLETE,enc_reclaim_complete, dec_reclaim_complete), PROC41(GETDEVICEINFO, enc_getdeviceinfo, dec_getdeviceinfo), PROC41(LAYOUTGET, enc_layoutget, dec_layoutget), diff --git a/fs/nfs/nfstrace.h b/fs/nfs/nfstrace.h index a0d6910aa03a..976d4089e267 100644 --- a/fs/nfs/nfstrace.h +++ b/fs/nfs/nfstrace.h @@ -11,6 +11,16 @@ #include <linux/tracepoint.h> #include <linux/iversion.h> +TRACE_DEFINE_ENUM(DT_UNKNOWN); +TRACE_DEFINE_ENUM(DT_FIFO); +TRACE_DEFINE_ENUM(DT_CHR); +TRACE_DEFINE_ENUM(DT_DIR); +TRACE_DEFINE_ENUM(DT_BLK); +TRACE_DEFINE_ENUM(DT_REG); +TRACE_DEFINE_ENUM(DT_LNK); +TRACE_DEFINE_ENUM(DT_SOCK); +TRACE_DEFINE_ENUM(DT_WHT); + #define nfs_show_file_type(ftype) \ __print_symbolic(ftype, \ { DT_UNKNOWN, "UNKNOWN" }, \ @@ -23,25 +33,57 @@ { DT_SOCK, "SOCK" }, \ { DT_WHT, "WHT" }) +TRACE_DEFINE_ENUM(NFS_INO_INVALID_DATA); +TRACE_DEFINE_ENUM(NFS_INO_INVALID_ATIME); +TRACE_DEFINE_ENUM(NFS_INO_INVALID_ACCESS); +TRACE_DEFINE_ENUM(NFS_INO_INVALID_ACL); +TRACE_DEFINE_ENUM(NFS_INO_REVAL_PAGECACHE); +TRACE_DEFINE_ENUM(NFS_INO_REVAL_FORCED); +TRACE_DEFINE_ENUM(NFS_INO_INVALID_LABEL); +TRACE_DEFINE_ENUM(NFS_INO_INVALID_CHANGE); +TRACE_DEFINE_ENUM(NFS_INO_INVALID_CTIME); +TRACE_DEFINE_ENUM(NFS_INO_INVALID_MTIME); +TRACE_DEFINE_ENUM(NFS_INO_INVALID_SIZE); +TRACE_DEFINE_ENUM(NFS_INO_INVALID_OTHER); + #define nfs_show_cache_validity(v) \ __print_flags(v, "|", \ - { NFS_INO_INVALID_ATTR, "INVALID_ATTR" }, \ { NFS_INO_INVALID_DATA, "INVALID_DATA" }, \ { NFS_INO_INVALID_ATIME, "INVALID_ATIME" }, \ { NFS_INO_INVALID_ACCESS, "INVALID_ACCESS" }, \ { NFS_INO_INVALID_ACL, "INVALID_ACL" }, \ { NFS_INO_REVAL_PAGECACHE, "REVAL_PAGECACHE" }, \ { NFS_INO_REVAL_FORCED, "REVAL_FORCED" }, \ - { NFS_INO_INVALID_LABEL, "INVALID_LABEL" }) + { NFS_INO_INVALID_LABEL, "INVALID_LABEL" }, \ + { NFS_INO_INVALID_CHANGE, "INVALID_CHANGE" }, \ + { NFS_INO_INVALID_CTIME, "INVALID_CTIME" }, \ + { NFS_INO_INVALID_MTIME, "INVALID_MTIME" }, \ + { NFS_INO_INVALID_SIZE, "INVALID_SIZE" }, \ + { NFS_INO_INVALID_OTHER, "INVALID_OTHER" }) + +TRACE_DEFINE_ENUM(NFS_INO_ADVISE_RDPLUS); +TRACE_DEFINE_ENUM(NFS_INO_STALE); +TRACE_DEFINE_ENUM(NFS_INO_ACL_LRU_SET); +TRACE_DEFINE_ENUM(NFS_INO_INVALIDATING); +TRACE_DEFINE_ENUM(NFS_INO_FSCACHE); +TRACE_DEFINE_ENUM(NFS_INO_FSCACHE_LOCK); +TRACE_DEFINE_ENUM(NFS_INO_LAYOUTCOMMIT); +TRACE_DEFINE_ENUM(NFS_INO_LAYOUTCOMMITTING); +TRACE_DEFINE_ENUM(NFS_INO_LAYOUTSTATS); +TRACE_DEFINE_ENUM(NFS_INO_ODIRECT); #define nfs_show_nfsi_flags(v) \ __print_flags(v, "|", \ - { 1 << NFS_INO_ADVISE_RDPLUS, "ADVISE_RDPLUS" }, \ - { 1 << NFS_INO_STALE, "STALE" }, \ - { 1 << NFS_INO_INVALIDATING, "INVALIDATING" }, \ - { 1 << NFS_INO_FSCACHE, "FSCACHE" }, \ - { 1 << NFS_INO_LAYOUTCOMMIT, "NEED_LAYOUTCOMMIT" }, \ - { 1 << NFS_INO_LAYOUTCOMMITTING, "LAYOUTCOMMIT" }) + { BIT(NFS_INO_ADVISE_RDPLUS), "ADVISE_RDPLUS" }, \ + { BIT(NFS_INO_STALE), "STALE" }, \ + { BIT(NFS_INO_ACL_LRU_SET), "ACL_LRU_SET" }, \ + { BIT(NFS_INO_INVALIDATING), "INVALIDATING" }, \ + { BIT(NFS_INO_FSCACHE), "FSCACHE" }, \ + { BIT(NFS_INO_FSCACHE_LOCK), "FSCACHE_LOCK" }, \ + { BIT(NFS_INO_LAYOUTCOMMIT), "NEED_LAYOUTCOMMIT" }, \ + { BIT(NFS_INO_LAYOUTCOMMITTING), "LAYOUTCOMMIT" }, \ + { BIT(NFS_INO_LAYOUTSTATS), "LAYOUTSTATS" }, \ + { BIT(NFS_INO_ODIRECT), "ODIRECT" }) DECLARE_EVENT_CLASS(nfs_inode_event, TP_PROTO( @@ -83,7 +125,7 @@ DECLARE_EVENT_CLASS(nfs_inode_event_done, TP_ARGS(inode, error), TP_STRUCT__entry( - __field(int, error) + __field(unsigned long, error) __field(dev_t, dev) __field(u32, fhandle) __field(unsigned char, type) @@ -96,7 +138,7 @@ DECLARE_EVENT_CLASS(nfs_inode_event_done, TP_fast_assign( const struct nfs_inode *nfsi = NFS_I(inode); - __entry->error = error; + __entry->error = error < 0 ? -error : 0; __entry->dev = inode->i_sb->s_dev; __entry->fileid = nfsi->fileid; __entry->fhandle = nfs_fhandle_hash(&nfsi->fh); @@ -108,10 +150,10 @@ DECLARE_EVENT_CLASS(nfs_inode_event_done, ), TP_printk( - "error=%d fileid=%02x:%02x:%llu fhandle=0x%08x " + "error=%ld (%s) fileid=%02x:%02x:%llu fhandle=0x%08x " "type=%u (%s) version=%llu size=%lld " - "cache_validity=%lu (%s) nfs_flags=%ld (%s)", - __entry->error, + "cache_validity=0x%lx (%s) nfs_flags=0x%lx (%s)", + -__entry->error, nfs_show_status(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->fileid, __entry->fhandle, @@ -158,13 +200,41 @@ DEFINE_NFS_INODE_EVENT_DONE(nfs_fsync_exit); DEFINE_NFS_INODE_EVENT(nfs_access_enter); DEFINE_NFS_INODE_EVENT_DONE(nfs_access_exit); +TRACE_DEFINE_ENUM(LOOKUP_FOLLOW); +TRACE_DEFINE_ENUM(LOOKUP_DIRECTORY); +TRACE_DEFINE_ENUM(LOOKUP_AUTOMOUNT); +TRACE_DEFINE_ENUM(LOOKUP_PARENT); +TRACE_DEFINE_ENUM(LOOKUP_REVAL); +TRACE_DEFINE_ENUM(LOOKUP_RCU); +TRACE_DEFINE_ENUM(LOOKUP_NO_REVAL); +TRACE_DEFINE_ENUM(LOOKUP_NO_EVAL); +TRACE_DEFINE_ENUM(LOOKUP_OPEN); +TRACE_DEFINE_ENUM(LOOKUP_CREATE); +TRACE_DEFINE_ENUM(LOOKUP_EXCL); +TRACE_DEFINE_ENUM(LOOKUP_RENAME_TARGET); +TRACE_DEFINE_ENUM(LOOKUP_JUMPED); +TRACE_DEFINE_ENUM(LOOKUP_ROOT); +TRACE_DEFINE_ENUM(LOOKUP_EMPTY); +TRACE_DEFINE_ENUM(LOOKUP_DOWN); + #define show_lookup_flags(flags) \ - __print_flags((unsigned long)flags, "|", \ - { LOOKUP_AUTOMOUNT, "AUTOMOUNT" }, \ + __print_flags(flags, "|", \ + { LOOKUP_FOLLOW, "FOLLOW" }, \ { LOOKUP_DIRECTORY, "DIRECTORY" }, \ + { LOOKUP_AUTOMOUNT, "AUTOMOUNT" }, \ + { LOOKUP_PARENT, "PARENT" }, \ + { LOOKUP_REVAL, "REVAL" }, \ + { LOOKUP_RCU, "RCU" }, \ + { LOOKUP_NO_REVAL, "NO_REVAL" }, \ + { LOOKUP_NO_EVAL, "NO_EVAL" }, \ { LOOKUP_OPEN, "OPEN" }, \ { LOOKUP_CREATE, "CREATE" }, \ - { LOOKUP_EXCL, "EXCL" }) + { LOOKUP_EXCL, "EXCL" }, \ + { LOOKUP_RENAME_TARGET, "RENAME_TARGET" }, \ + { LOOKUP_JUMPED, "JUMPED" }, \ + { LOOKUP_ROOT, "ROOT" }, \ + { LOOKUP_EMPTY, "EMPTY" }, \ + { LOOKUP_DOWN, "DOWN" }) DECLARE_EVENT_CLASS(nfs_lookup_event, TP_PROTO( @@ -176,7 +246,7 @@ DECLARE_EVENT_CLASS(nfs_lookup_event, TP_ARGS(dir, dentry, flags), TP_STRUCT__entry( - __field(unsigned int, flags) + __field(unsigned long, flags) __field(dev_t, dev) __field(u64, dir) __string(name, dentry->d_name.name) @@ -190,7 +260,7 @@ DECLARE_EVENT_CLASS(nfs_lookup_event, ), TP_printk( - "flags=%u (%s) name=%02x:%02x:%llu/%s", + "flags=0x%lx (%s) name=%02x:%02x:%llu/%s", __entry->flags, show_lookup_flags(__entry->flags), MAJOR(__entry->dev), MINOR(__entry->dev), @@ -219,8 +289,8 @@ DECLARE_EVENT_CLASS(nfs_lookup_event_done, TP_ARGS(dir, dentry, flags, error), TP_STRUCT__entry( - __field(int, error) - __field(unsigned int, flags) + __field(unsigned long, error) + __field(unsigned long, flags) __field(dev_t, dev) __field(u64, dir) __string(name, dentry->d_name.name) @@ -229,14 +299,14 @@ DECLARE_EVENT_CLASS(nfs_lookup_event_done, TP_fast_assign( __entry->dev = dir->i_sb->s_dev; __entry->dir = NFS_FILEID(dir); - __entry->error = error; + __entry->error = error < 0 ? -error : 0; __entry->flags = flags; __assign_str(name, dentry->d_name.name); ), TP_printk( - "error=%d flags=%u (%s) name=%02x:%02x:%llu/%s", - __entry->error, + "error=%ld (%s) flags=0x%lx (%s) name=%02x:%02x:%llu/%s", + -__entry->error, nfs_show_status(__entry->error), __entry->flags, show_lookup_flags(__entry->flags), MAJOR(__entry->dev), MINOR(__entry->dev), @@ -260,15 +330,43 @@ DEFINE_NFS_LOOKUP_EVENT_DONE(nfs_lookup_exit); DEFINE_NFS_LOOKUP_EVENT(nfs_lookup_revalidate_enter); DEFINE_NFS_LOOKUP_EVENT_DONE(nfs_lookup_revalidate_exit); +TRACE_DEFINE_ENUM(O_WRONLY); +TRACE_DEFINE_ENUM(O_RDWR); +TRACE_DEFINE_ENUM(O_CREAT); +TRACE_DEFINE_ENUM(O_EXCL); +TRACE_DEFINE_ENUM(O_NOCTTY); +TRACE_DEFINE_ENUM(O_TRUNC); +TRACE_DEFINE_ENUM(O_APPEND); +TRACE_DEFINE_ENUM(O_NONBLOCK); +TRACE_DEFINE_ENUM(O_DSYNC); +TRACE_DEFINE_ENUM(O_DIRECT); +TRACE_DEFINE_ENUM(O_LARGEFILE); +TRACE_DEFINE_ENUM(O_DIRECTORY); +TRACE_DEFINE_ENUM(O_NOFOLLOW); +TRACE_DEFINE_ENUM(O_NOATIME); +TRACE_DEFINE_ENUM(O_CLOEXEC); + #define show_open_flags(flags) \ - __print_flags((unsigned long)flags, "|", \ + __print_flags(flags, "|", \ + { O_WRONLY, "O_WRONLY" }, \ + { O_RDWR, "O_RDWR" }, \ { O_CREAT, "O_CREAT" }, \ { O_EXCL, "O_EXCL" }, \ + { O_NOCTTY, "O_NOCTTY" }, \ { O_TRUNC, "O_TRUNC" }, \ { O_APPEND, "O_APPEND" }, \ + { O_NONBLOCK, "O_NONBLOCK" }, \ { O_DSYNC, "O_DSYNC" }, \ { O_DIRECT, "O_DIRECT" }, \ - { O_DIRECTORY, "O_DIRECTORY" }) + { O_LARGEFILE, "O_LARGEFILE" }, \ + { O_DIRECTORY, "O_DIRECTORY" }, \ + { O_NOFOLLOW, "O_NOFOLLOW" }, \ + { O_NOATIME, "O_NOATIME" }, \ + { O_CLOEXEC, "O_CLOEXEC" }) + +TRACE_DEFINE_ENUM(FMODE_READ); +TRACE_DEFINE_ENUM(FMODE_WRITE); +TRACE_DEFINE_ENUM(FMODE_EXEC); #define show_fmode_flags(mode) \ __print_flags(mode, "|", \ @@ -286,7 +384,7 @@ TRACE_EVENT(nfs_atomic_open_enter, TP_ARGS(dir, ctx, flags), TP_STRUCT__entry( - __field(unsigned int, flags) + __field(unsigned long, flags) __field(unsigned int, fmode) __field(dev_t, dev) __field(u64, dir) @@ -302,7 +400,7 @@ TRACE_EVENT(nfs_atomic_open_enter, ), TP_printk( - "flags=%u (%s) fmode=%s name=%02x:%02x:%llu/%s", + "flags=0x%lx (%s) fmode=%s name=%02x:%02x:%llu/%s", __entry->flags, show_open_flags(__entry->flags), show_fmode_flags(__entry->fmode), @@ -323,8 +421,8 @@ TRACE_EVENT(nfs_atomic_open_exit, TP_ARGS(dir, ctx, flags, error), TP_STRUCT__entry( - __field(int, error) - __field(unsigned int, flags) + __field(unsigned long, error) + __field(unsigned long, flags) __field(unsigned int, fmode) __field(dev_t, dev) __field(u64, dir) @@ -332,7 +430,7 @@ TRACE_EVENT(nfs_atomic_open_exit, ), TP_fast_assign( - __entry->error = error; + __entry->error = -error; __entry->dev = dir->i_sb->s_dev; __entry->dir = NFS_FILEID(dir); __entry->flags = flags; @@ -341,9 +439,9 @@ TRACE_EVENT(nfs_atomic_open_exit, ), TP_printk( - "error=%d flags=%u (%s) fmode=%s " + "error=%ld (%s) flags=0x%lx (%s) fmode=%s " "name=%02x:%02x:%llu/%s", - __entry->error, + -__entry->error, nfs_show_status(__entry->error), __entry->flags, show_open_flags(__entry->flags), show_fmode_flags(__entry->fmode), @@ -363,7 +461,7 @@ TRACE_EVENT(nfs_create_enter, TP_ARGS(dir, dentry, flags), TP_STRUCT__entry( - __field(unsigned int, flags) + __field(unsigned long, flags) __field(dev_t, dev) __field(u64, dir) __string(name, dentry->d_name.name) @@ -377,7 +475,7 @@ TRACE_EVENT(nfs_create_enter, ), TP_printk( - "flags=%u (%s) name=%02x:%02x:%llu/%s", + "flags=0x%lx (%s) name=%02x:%02x:%llu/%s", __entry->flags, show_open_flags(__entry->flags), MAJOR(__entry->dev), MINOR(__entry->dev), @@ -397,15 +495,15 @@ TRACE_EVENT(nfs_create_exit, TP_ARGS(dir, dentry, flags, error), TP_STRUCT__entry( - __field(int, error) - __field(unsigned int, flags) + __field(unsigned long, error) + __field(unsigned long, flags) __field(dev_t, dev) __field(u64, dir) __string(name, dentry->d_name.name) ), TP_fast_assign( - __entry->error = error; + __entry->error = -error; __entry->dev = dir->i_sb->s_dev; __entry->dir = NFS_FILEID(dir); __entry->flags = flags; @@ -413,8 +511,8 @@ TRACE_EVENT(nfs_create_exit, ), TP_printk( - "error=%d flags=%u (%s) name=%02x:%02x:%llu/%s", - __entry->error, + "error=%ld (%s) flags=0x%lx (%s) name=%02x:%02x:%llu/%s", + -__entry->error, nfs_show_status(__entry->error), __entry->flags, show_open_flags(__entry->flags), MAJOR(__entry->dev), MINOR(__entry->dev), @@ -469,7 +567,7 @@ DECLARE_EVENT_CLASS(nfs_directory_event_done, TP_ARGS(dir, dentry, error), TP_STRUCT__entry( - __field(int, error) + __field(unsigned long, error) __field(dev_t, dev) __field(u64, dir) __string(name, dentry->d_name.name) @@ -478,13 +576,13 @@ DECLARE_EVENT_CLASS(nfs_directory_event_done, TP_fast_assign( __entry->dev = dir->i_sb->s_dev; __entry->dir = NFS_FILEID(dir); - __entry->error = error; + __entry->error = error < 0 ? -error : 0; __assign_str(name, dentry->d_name.name); ), TP_printk( - "error=%d name=%02x:%02x:%llu/%s", - __entry->error, + "error=%ld (%s) name=%02x:%02x:%llu/%s", + -__entry->error, nfs_show_status(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->dir, __get_str(name) @@ -557,7 +655,7 @@ TRACE_EVENT(nfs_link_exit, TP_ARGS(inode, dir, dentry, error), TP_STRUCT__entry( - __field(int, error) + __field(unsigned long, error) __field(dev_t, dev) __field(u64, fileid) __field(u64, dir) @@ -568,13 +666,13 @@ TRACE_EVENT(nfs_link_exit, __entry->dev = inode->i_sb->s_dev; __entry->fileid = NFS_FILEID(inode); __entry->dir = NFS_FILEID(dir); - __entry->error = error; + __entry->error = error < 0 ? -error : 0; __assign_str(name, dentry->d_name.name); ), TP_printk( - "error=%d fileid=%02x:%02x:%llu name=%02x:%02x:%llu/%s", - __entry->error, + "error=%ld (%s) fileid=%02x:%02x:%llu name=%02x:%02x:%llu/%s", + -__entry->error, nfs_show_status(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), __entry->fileid, MAJOR(__entry->dev), MINOR(__entry->dev), @@ -642,7 +740,7 @@ DECLARE_EVENT_CLASS(nfs_rename_event_done, TP_STRUCT__entry( __field(dev_t, dev) - __field(int, error) + __field(unsigned long, error) __field(u64, old_dir) __string(old_name, old_dentry->d_name.name) __field(u64, new_dir) @@ -651,17 +749,17 @@ DECLARE_EVENT_CLASS(nfs_rename_event_done, TP_fast_assign( __entry->dev = old_dir->i_sb->s_dev; + __entry->error = -error; __entry->old_dir = NFS_FILEID(old_dir); __entry->new_dir = NFS_FILEID(new_dir); - __entry->error = error; __assign_str(old_name, old_dentry->d_name.name); __assign_str(new_name, new_dentry->d_name.name); ), TP_printk( - "error=%d old_name=%02x:%02x:%llu/%s " + "error=%ld (%s) old_name=%02x:%02x:%llu/%s " "new_name=%02x:%02x:%llu/%s", - __entry->error, + -__entry->error, nfs_show_status(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->old_dir, __get_str(old_name), @@ -697,7 +795,7 @@ TRACE_EVENT(nfs_sillyrename_unlink, TP_STRUCT__entry( __field(dev_t, dev) - __field(int, error) + __field(unsigned long, error) __field(u64, dir) __dynamic_array(char, name, data->args.name.len + 1) ), @@ -707,15 +805,15 @@ TRACE_EVENT(nfs_sillyrename_unlink, size_t len = data->args.name.len; __entry->dev = dir->i_sb->s_dev; __entry->dir = NFS_FILEID(dir); - __entry->error = error; + __entry->error = -error; memcpy(__get_str(name), data->args.name.name, len); __get_str(name)[len] = 0; ), TP_printk( - "error=%d name=%02x:%02x:%llu/%s", - __entry->error, + "error=%ld (%s) name=%02x:%02x:%llu/%s", + -__entry->error, nfs_show_status(__entry->error), MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->dir, __get_str(name) @@ -974,6 +1072,8 @@ TRACE_DEFINE_ENUM(NFSERR_PERM); TRACE_DEFINE_ENUM(NFSERR_NOENT); TRACE_DEFINE_ENUM(NFSERR_IO); TRACE_DEFINE_ENUM(NFSERR_NXIO); +TRACE_DEFINE_ENUM(ECHILD); +TRACE_DEFINE_ENUM(NFSERR_EAGAIN); TRACE_DEFINE_ENUM(NFSERR_ACCES); TRACE_DEFINE_ENUM(NFSERR_EXIST); TRACE_DEFINE_ENUM(NFSERR_XDEV); @@ -985,6 +1085,7 @@ TRACE_DEFINE_ENUM(NFSERR_FBIG); TRACE_DEFINE_ENUM(NFSERR_NOSPC); TRACE_DEFINE_ENUM(NFSERR_ROFS); TRACE_DEFINE_ENUM(NFSERR_MLINK); +TRACE_DEFINE_ENUM(NFSERR_OPNOTSUPP); TRACE_DEFINE_ENUM(NFSERR_NAMETOOLONG); TRACE_DEFINE_ENUM(NFSERR_NOTEMPTY); TRACE_DEFINE_ENUM(NFSERR_DQUOT); @@ -1007,6 +1108,8 @@ TRACE_DEFINE_ENUM(NFSERR_JUKEBOX); { NFSERR_NOENT, "NOENT" }, \ { NFSERR_IO, "IO" }, \ { NFSERR_NXIO, "NXIO" }, \ + { ECHILD, "CHILD" }, \ + { NFSERR_EAGAIN, "AGAIN" }, \ { NFSERR_ACCES, "ACCES" }, \ { NFSERR_EXIST, "EXIST" }, \ { NFSERR_XDEV, "XDEV" }, \ @@ -1018,6 +1121,7 @@ TRACE_DEFINE_ENUM(NFSERR_JUKEBOX); { NFSERR_NOSPC, "NOSPC" }, \ { NFSERR_ROFS, "ROFS" }, \ { NFSERR_MLINK, "MLINK" }, \ + { NFSERR_OPNOTSUPP, "OPNOTSUPP" }, \ { NFSERR_NAMETOOLONG, "NAMETOOLONG" }, \ { NFSERR_NOTEMPTY, "NOTEMPTY" }, \ { NFSERR_DQUOT, "DQUOT" }, \ @@ -1035,22 +1139,33 @@ TRACE_DEFINE_ENUM(NFSERR_JUKEBOX); TRACE_EVENT(nfs_xdr_status, TP_PROTO( + const struct xdr_stream *xdr, int error ), - TP_ARGS(error), + TP_ARGS(xdr, error), TP_STRUCT__entry( - __field(int, error) + __field(unsigned int, task_id) + __field(unsigned int, client_id) + __field(u32, xid) + __field(unsigned long, error) ), TP_fast_assign( + const struct rpc_rqst *rqstp = xdr->rqst; + const struct rpc_task *task = rqstp->rq_task; + + __entry->task_id = task->tk_pid; + __entry->client_id = task->tk_client->cl_clid; + __entry->xid = be32_to_cpu(rqstp->rq_xid); __entry->error = error; ), TP_printk( - "error=%d (%s)", - __entry->error, nfs_show_status(__entry->error) + "task:%u@%d xid=0x%08x error=%ld (%s)", + __entry->task_id, __entry->client_id, __entry->xid, + -__entry->error, nfs_show_status(__entry->error) ) ); diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 6ef5278326b6..ed4e1b07447b 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -77,7 +77,7 @@ void nfs_set_pgio_error(struct nfs_pgio_header *hdr, int error, loff_t pos) static inline struct nfs_page * nfs_page_alloc(void) { - struct nfs_page *p = kmem_cache_zalloc(nfs_page_cachep, GFP_NOIO); + struct nfs_page *p = kmem_cache_zalloc(nfs_page_cachep, GFP_KERNEL); if (p) INIT_LIST_HEAD(&p->wb_list); return p; @@ -775,8 +775,6 @@ int nfs_generic_pgio(struct nfs_pageio_descriptor *desc, if (pagecount <= ARRAY_SIZE(pg_array->page_array)) pg_array->pagevec = pg_array->page_array; else { - if (hdr->rw_mode == FMODE_WRITE) - gfp_flags = GFP_NOIO; pg_array->pagevec = kcalloc(pagecount, sizeof(struct page *), gfp_flags); if (!pg_array->pagevec) { pg_array->npages = 0; @@ -851,7 +849,7 @@ nfs_pageio_alloc_mirrors(struct nfs_pageio_descriptor *desc, desc->pg_mirrors_dynamic = NULL; if (mirror_count == 1) return desc->pg_mirrors_static; - ret = kmalloc_array(mirror_count, sizeof(*ret), GFP_NOFS); + ret = kmalloc_array(mirror_count, sizeof(*ret), GFP_KERNEL); if (ret != NULL) { for (i = 0; i < mirror_count; i++) nfs_pageio_mirror_init(&ret[i], desc->pg_bsize); diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 83722e936b4a..75bd5b552ba4 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1890,7 +1890,7 @@ lookup_again: spin_unlock(&ino->i_lock); lseg = ERR_PTR(wait_var_event_killable(&lo->plh_outstanding, !atomic_read(&lo->plh_outstanding))); - if (IS_ERR(lseg) || !list_empty(&lo->plh_segs)) + if (IS_ERR(lseg)) goto out_put_layout_hdr; pnfs_put_layout_hdr(lo); goto lookup_again; @@ -1915,6 +1915,7 @@ lookup_again: * stateid. */ if (test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags)) { + int status; /* * The first layoutget for the file. Need to serialize per @@ -1934,13 +1935,20 @@ lookup_again: } first = true; - if (nfs4_select_rw_stateid(ctx->state, + status = nfs4_select_rw_stateid(ctx->state, iomode == IOMODE_RW ? FMODE_WRITE : FMODE_READ, - NULL, &stateid, NULL) != 0) { + NULL, &stateid, NULL); + if (status != 0) { trace_pnfs_update_layout(ino, pos, count, iomode, lo, lseg, PNFS_UPDATE_LAYOUT_INVALID_OPEN); - goto out_unlock; + if (status != -EAGAIN) + goto out_unlock; + spin_unlock(&ino->i_lock); + nfs4_schedule_stateid_recovery(server, ctx->state); + pnfs_clear_first_layoutget(lo); + pnfs_put_layout_hdr(lo); + goto lookup_again; } } else { nfs4_stateid_copy(&stateid, &lo->plh_stateid); @@ -2029,6 +2037,8 @@ lookup_again: out_put_layout_hdr: if (first) pnfs_clear_first_layoutget(lo); + trace_pnfs_update_layout(ino, pos, count, iomode, lo, lseg, + PNFS_UPDATE_LAYOUT_EXIT); pnfs_put_layout_hdr(lo); out: dprintk("%s: inode %s/%llu pNFS layout segment %s for " @@ -2468,7 +2478,7 @@ pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, wb_size, IOMODE_RW, false, - GFP_NOFS); + GFP_KERNEL); if (IS_ERR(pgio->pg_lseg)) { pgio->pg_error = PTR_ERR(pgio->pg_lseg); pgio->pg_lseg = NULL; diff --git a/fs/nfs/super.c b/fs/nfs/super.c index f88ddac2dcdf..3683d2b1cc8e 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -77,6 +77,8 @@ #define NFS_DEFAULT_VERSION 2 #endif +#define NFS_MAX_CONNECTIONS 16 + enum { /* Mount options that take no arguments */ Opt_soft, Opt_softerr, Opt_hard, @@ -108,6 +110,7 @@ enum { Opt_nfsvers, Opt_sec, Opt_proto, Opt_mountproto, Opt_mounthost, Opt_addr, Opt_mountaddr, Opt_clientaddr, + Opt_nconnect, Opt_lookupcache, Opt_fscache_uniq, Opt_local_lock, @@ -181,6 +184,8 @@ static const match_table_t nfs_mount_option_tokens = { { Opt_mounthost, "mounthost=%s" }, { Opt_mountaddr, "mountaddr=%s" }, + { Opt_nconnect, "nconnect=%s" }, + { Opt_lookupcache, "lookupcache=%s" }, { Opt_fscache_uniq, "fsc=%s" }, { Opt_local_lock, "local_lock=%s" }, @@ -582,7 +587,7 @@ static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss, } default: if (showdefaults) - seq_printf(m, ",mountaddr=unspecified"); + seq_puts(m, ",mountaddr=unspecified"); } if (nfss->mountd_version || showdefaults) @@ -673,6 +678,8 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss, seq_printf(m, ",proto=%s", rpc_peeraddr2str(nfss->client, RPC_DISPLAY_NETID)); rcu_read_unlock(); + if (clp->cl_nconnect > 0) + seq_printf(m, ",nconnect=%u", clp->cl_nconnect); if (version == 4) { if (nfss->port != NFS_PORT) seq_printf(m, ",port=%u", nfss->port); @@ -690,29 +697,29 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss, nfs_show_nfsv4_options(m, nfss, showdefaults); if (nfss->options & NFS_OPTION_FSCACHE) - seq_printf(m, ",fsc"); + seq_puts(m, ",fsc"); if (nfss->options & NFS_OPTION_MIGRATION) - seq_printf(m, ",migration"); + seq_puts(m, ",migration"); if (nfss->flags & NFS_MOUNT_LOOKUP_CACHE_NONEG) { if (nfss->flags & NFS_MOUNT_LOOKUP_CACHE_NONE) - seq_printf(m, ",lookupcache=none"); + seq_puts(m, ",lookupcache=none"); else - seq_printf(m, ",lookupcache=pos"); + seq_puts(m, ",lookupcache=pos"); } local_flock = nfss->flags & NFS_MOUNT_LOCAL_FLOCK; local_fcntl = nfss->flags & NFS_MOUNT_LOCAL_FCNTL; if (!local_flock && !local_fcntl) - seq_printf(m, ",local_lock=none"); + seq_puts(m, ",local_lock=none"); else if (local_flock && local_fcntl) - seq_printf(m, ",local_lock=all"); + seq_puts(m, ",local_lock=all"); else if (local_flock) - seq_printf(m, ",local_lock=flock"); + seq_puts(m, ",local_lock=flock"); else - seq_printf(m, ",local_lock=posix"); + seq_puts(m, ",local_lock=posix"); } /* @@ -735,11 +742,21 @@ int nfs_show_options(struct seq_file *m, struct dentry *root) EXPORT_SYMBOL_GPL(nfs_show_options); #if IS_ENABLED(CONFIG_NFS_V4) +static void show_lease(struct seq_file *m, struct nfs_server *server) +{ + struct nfs_client *clp = server->nfs_client; + unsigned long expire; + + seq_printf(m, ",lease_time=%ld", clp->cl_lease_time / HZ); + expire = clp->cl_last_renewal + clp->cl_lease_time; + seq_printf(m, ",lease_expired=%ld", + time_after(expire, jiffies) ? 0 : (jiffies - expire) / HZ); +} #ifdef CONFIG_NFS_V4_1 static void show_sessions(struct seq_file *m, struct nfs_server *server) { if (nfs4_has_session(server->nfs_client)) - seq_printf(m, ",sessions"); + seq_puts(m, ",sessions"); } #else static void show_sessions(struct seq_file *m, struct nfs_server *server) {} @@ -816,7 +833,7 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root) /* * Display all mount option settings */ - seq_printf(m, "\n\topts:\t"); + seq_puts(m, "\n\topts:\t"); seq_puts(m, sb_rdonly(root->d_sb) ? "ro" : "rw"); seq_puts(m, root->d_sb->s_flags & SB_SYNCHRONOUS ? ",sync" : ""); seq_puts(m, root->d_sb->s_flags & SB_NOATIME ? ",noatime" : ""); @@ -827,7 +844,7 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root) show_implementation_id(m, nfss); - seq_printf(m, "\n\tcaps:\t"); + seq_puts(m, "\n\tcaps:\t"); seq_printf(m, "caps=0x%x", nfss->caps); seq_printf(m, ",wtmult=%u", nfss->wtmult); seq_printf(m, ",dtsize=%u", nfss->dtsize); @@ -836,13 +853,14 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root) #if IS_ENABLED(CONFIG_NFS_V4) if (nfss->nfs_client->rpc_ops->version == 4) { - seq_printf(m, "\n\tnfsv4:\t"); + seq_puts(m, "\n\tnfsv4:\t"); seq_printf(m, "bm0=0x%x", nfss->attr_bitmask[0]); seq_printf(m, ",bm1=0x%x", nfss->attr_bitmask[1]); seq_printf(m, ",bm2=0x%x", nfss->attr_bitmask[2]); seq_printf(m, ",acl=0x%x", nfss->acl_bitmask); show_sessions(m, nfss); show_pnfs(m, nfss); + show_lease(m, nfss); } #endif @@ -874,20 +892,20 @@ int nfs_show_stats(struct seq_file *m, struct dentry *root) preempt_enable(); } - seq_printf(m, "\n\tevents:\t"); + seq_puts(m, "\n\tevents:\t"); for (i = 0; i < __NFSIOS_COUNTSMAX; i++) seq_printf(m, "%lu ", totals.events[i]); - seq_printf(m, "\n\tbytes:\t"); + seq_puts(m, "\n\tbytes:\t"); for (i = 0; i < __NFSIOS_BYTESMAX; i++) seq_printf(m, "%Lu ", totals.bytes[i]); #ifdef CONFIG_NFS_FSCACHE if (nfss->options & NFS_OPTION_FSCACHE) { - seq_printf(m, "\n\tfsc:\t"); + seq_puts(m, "\n\tfsc:\t"); for (i = 0; i < __NFSIOS_FSCACHEMAX; i++) seq_printf(m, "%Lu ", totals.fscache[i]); } #endif - seq_printf(m, "\n"); + seq_putc(m, '\n'); rpc_clnt_show_stats(m, nfss->client); @@ -1549,6 +1567,11 @@ static int nfs_parse_mount_options(char *raw, if (mnt->mount_server.addrlen == 0) goto out_invalid_address; break; + case Opt_nconnect: + if (nfs_get_option_ul_bound(args, &option, 1, NFS_MAX_CONNECTIONS)) + goto out_invalid_value; + mnt->nfs_server.nconnect = option; + break; case Opt_lookupcache: string = match_strdup(args); if (string == NULL) diff --git a/fs/nfs/sysfs.c b/fs/nfs/sysfs.c new file mode 100644 index 000000000000..4f3390b20239 --- /dev/null +++ b/fs/nfs/sysfs.c @@ -0,0 +1,187 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2019 Hammerspace Inc + */ + +#include <linux/module.h> +#include <linux/kobject.h> +#include <linux/sysfs.h> +#include <linux/fs.h> +#include <linux/slab.h> +#include <linux/netdevice.h> +#include <linux/string.h> +#include <linux/nfs_fs.h> +#include <linux/rcupdate.h> + +#include "nfs4_fs.h" +#include "netns.h" +#include "sysfs.h" + +struct kobject *nfs_client_kobj; +static struct kset *nfs_client_kset; + +static void nfs_netns_object_release(struct kobject *kobj) +{ + kfree(kobj); +} + +static const struct kobj_ns_type_operations *nfs_netns_object_child_ns_type( + struct kobject *kobj) +{ + return &net_ns_type_operations; +} + +static struct kobj_type nfs_netns_object_type = { + .release = nfs_netns_object_release, + .sysfs_ops = &kobj_sysfs_ops, + .child_ns_type = nfs_netns_object_child_ns_type, +}; + +static struct kobject *nfs_netns_object_alloc(const char *name, + struct kset *kset, struct kobject *parent) +{ + struct kobject *kobj; + + kobj = kzalloc(sizeof(*kobj), GFP_KERNEL); + if (kobj) { + kobj->kset = kset; + if (kobject_init_and_add(kobj, &nfs_netns_object_type, + parent, "%s", name) == 0) + return kobj; + kobject_put(kobj); + } + return NULL; +} + +int nfs_sysfs_init(void) +{ + nfs_client_kset = kset_create_and_add("nfs", NULL, fs_kobj); + if (!nfs_client_kset) + return -ENOMEM; + nfs_client_kobj = nfs_netns_object_alloc("net", nfs_client_kset, NULL); + if (!nfs_client_kobj) { + kset_unregister(nfs_client_kset); + nfs_client_kset = NULL; + return -ENOMEM; + } + return 0; +} + +void nfs_sysfs_exit(void) +{ + kobject_put(nfs_client_kobj); + kset_unregister(nfs_client_kset); +} + +static ssize_t nfs_netns_identifier_show(struct kobject *kobj, + struct kobj_attribute *attr, char *buf) +{ + struct nfs_netns_client *c = container_of(kobj, + struct nfs_netns_client, + kobject); + return scnprintf(buf, PAGE_SIZE, "%s\n", c->identifier); +} + +/* Strip trailing '\n' */ +static size_t nfs_string_strip(const char *c, size_t len) +{ + while (len > 0 && c[len-1] == '\n') + --len; + return len; +} + +static ssize_t nfs_netns_identifier_store(struct kobject *kobj, + struct kobj_attribute *attr, + const char *buf, size_t count) +{ + struct nfs_netns_client *c = container_of(kobj, + struct nfs_netns_client, + kobject); + const char *old; + char *p; + size_t len; + + len = nfs_string_strip(buf, min_t(size_t, count, CONTAINER_ID_MAXLEN)); + if (!len) + return 0; + p = kmemdup_nul(buf, len, GFP_KERNEL); + if (!p) + return -ENOMEM; + old = xchg(&c->identifier, p); + if (old) { + synchronize_rcu(); + kfree(old); + } + return count; +} + +static void nfs_netns_client_release(struct kobject *kobj) +{ + struct nfs_netns_client *c = container_of(kobj, + struct nfs_netns_client, + kobject); + + if (c->identifier) + kfree(c->identifier); + kfree(c); +} + +static const void *nfs_netns_client_namespace(struct kobject *kobj) +{ + return container_of(kobj, struct nfs_netns_client, kobject)->net; +} + +static struct kobj_attribute nfs_netns_client_id = __ATTR(identifier, + 0644, nfs_netns_identifier_show, nfs_netns_identifier_store); + +static struct attribute *nfs_netns_client_attrs[] = { + &nfs_netns_client_id.attr, + NULL, +}; + +static struct kobj_type nfs_netns_client_type = { + .release = nfs_netns_client_release, + .default_attrs = nfs_netns_client_attrs, + .sysfs_ops = &kobj_sysfs_ops, + .namespace = nfs_netns_client_namespace, +}; + +static struct nfs_netns_client *nfs_netns_client_alloc(struct kobject *parent, + struct net *net) +{ + struct nfs_netns_client *p; + + p = kzalloc(sizeof(*p), GFP_KERNEL); + if (p) { + p->net = net; + p->kobject.kset = nfs_client_kset; + if (kobject_init_and_add(&p->kobject, &nfs_netns_client_type, + parent, "nfs_client") == 0) + return p; + kobject_put(&p->kobject); + } + return NULL; +} + +void nfs_netns_sysfs_setup(struct nfs_net *netns, struct net *net) +{ + struct nfs_netns_client *clp; + + clp = nfs_netns_client_alloc(nfs_client_kobj, net); + if (clp) { + netns->nfs_client = clp; + kobject_uevent(&clp->kobject, KOBJ_ADD); + } +} + +void nfs_netns_sysfs_destroy(struct nfs_net *netns) +{ + struct nfs_netns_client *clp = netns->nfs_client; + + if (clp) { + kobject_uevent(&clp->kobject, KOBJ_REMOVE); + kobject_del(&clp->kobject); + kobject_put(&clp->kobject); + netns->nfs_client = NULL; + } +} diff --git a/fs/nfs/sysfs.h b/fs/nfs/sysfs.h new file mode 100644 index 000000000000..f1b27411dcc0 --- /dev/null +++ b/fs/nfs/sysfs.h @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2019 Hammerspace Inc + */ + +#ifndef __NFS_SYSFS_H +#define __NFS_SYSFS_H + +#define CONTAINER_ID_MAXLEN (64) + +struct nfs_netns_client { + struct kobject kobject; + struct net *net; + const char *identifier; +}; + +extern struct kobject *nfs_client_kobj; + +extern int nfs_sysfs_init(void); +extern void nfs_sysfs_exit(void); + +void nfs_netns_sysfs_setup(struct nfs_net *netns, struct net *net); +void nfs_netns_sysfs_destroy(struct nfs_net *netns); + +#endif diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 059a7c38bc4f..92d9cadc6102 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -103,7 +103,7 @@ EXPORT_SYMBOL_GPL(nfs_commit_free); static struct nfs_pgio_header *nfs_writehdr_alloc(void) { - struct nfs_pgio_header *p = mempool_alloc(nfs_wdata_mempool, GFP_NOIO); + struct nfs_pgio_header *p = mempool_alloc(nfs_wdata_mempool, GFP_KERNEL); memset(p, 0, sizeof(*p)); p->rw_mode = FMODE_WRITE; @@ -721,12 +721,11 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc) struct inode *inode = mapping->host; struct nfs_pageio_descriptor pgio; struct nfs_io_completion *ioc; - unsigned int pflags = memalloc_nofs_save(); int err; nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGES); - ioc = nfs_io_completion_alloc(GFP_NOFS); + ioc = nfs_io_completion_alloc(GFP_KERNEL); if (ioc) nfs_io_completion_init(ioc, nfs_io_completion_commit, inode); @@ -737,8 +736,6 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc) nfs_pageio_complete(&pgio); nfs_io_completion_put(ioc); - memalloc_nofs_restore(pflags); - if (err < 0) goto out_err; err = pgio.pg_error; diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h index 22494d170619..fd59904a282c 100644 --- a/include/linux/nfs4.h +++ b/include/linux/nfs4.h @@ -660,6 +660,7 @@ enum pnfs_update_layout_reason { PNFS_UPDATE_LAYOUT_BLOCKED, PNFS_UPDATE_LAYOUT_INVALID_OPEN, PNFS_UPDATE_LAYOUT_SEND_LAYOUTGET, + PNFS_UPDATE_LAYOUT_EXIT, }; #define NFS4_OP_MAP_NUM_LONGS \ diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index d363d5765cdf..0a11712a80e3 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -223,6 +223,8 @@ struct nfs4_copy_state { #define NFS_INO_INVALID_MTIME BIT(10) /* cached mtime is invalid */ #define NFS_INO_INVALID_SIZE BIT(11) /* cached size is invalid */ #define NFS_INO_INVALID_OTHER BIT(12) /* other attrs are invalid */ +#define NFS_INO_DATA_INVAL_DEFER \ + BIT(13) /* Deferred cache invalidation */ #define NFS_INO_INVALID_ATTR (NFS_INO_INVALID_CHANGE \ | NFS_INO_INVALID_CTIME \ diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h index 1e78032a174b..a87fe854f008 100644 --- a/include/linux/nfs_fs_sb.h +++ b/include/linux/nfs_fs_sb.h @@ -58,6 +58,7 @@ struct nfs_client { struct nfs_subversion * cl_nfs_mod; /* pointer to nfs version module */ u32 cl_minorversion;/* NFSv4 minorversion */ + unsigned int cl_nconnect; /* Number of connections */ const char * cl_principal; /* used for machine cred */ #if IS_ENABLED(CONFIG_NFS_V4) diff --git a/include/linux/sunrpc/bc_xprt.h b/include/linux/sunrpc/bc_xprt.h index d4229a78524a..87d27e13d885 100644 --- a/include/linux/sunrpc/bc_xprt.h +++ b/include/linux/sunrpc/bc_xprt.h @@ -43,6 +43,7 @@ void xprt_destroy_backchannel(struct rpc_xprt *, unsigned int max_reqs); int xprt_setup_bc(struct rpc_xprt *xprt, unsigned int min_reqs); void xprt_destroy_bc(struct rpc_xprt *xprt, unsigned int max_reqs); void xprt_free_bc_rqst(struct rpc_rqst *req); +unsigned int xprt_bc_max_slots(struct rpc_xprt *xprt); /* * Determine if a shared backchannel is in use diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h index 6e8073140a5d..abc63bd1be2b 100644 --- a/include/linux/sunrpc/clnt.h +++ b/include/linux/sunrpc/clnt.h @@ -124,6 +124,7 @@ struct rpc_create_args { u32 prognumber; /* overrides program->number */ u32 version; rpc_authflavor_t authflavor; + u32 nconnect; unsigned long flags; char *client_name; struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */ @@ -163,6 +164,8 @@ void rpc_shutdown_client(struct rpc_clnt *); void rpc_release_client(struct rpc_clnt *); void rpc_task_release_transport(struct rpc_task *); void rpc_task_release_client(struct rpc_task *); +struct rpc_xprt *rpc_task_get_xprt(struct rpc_clnt *clnt, + struct rpc_xprt *xprt); int rpcb_create_local(struct net *); void rpcb_put_local(struct net *); @@ -191,6 +194,7 @@ void rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int); struct net * rpc_net_ns(struct rpc_clnt *); size_t rpc_max_payload(struct rpc_clnt *); size_t rpc_max_bc_payload(struct rpc_clnt *); +unsigned int rpc_num_bc_slots(struct rpc_clnt *); void rpc_force_rebind(struct rpc_clnt *); size_t rpc_peeraddr(struct rpc_clnt *, struct sockaddr *, size_t); const char *rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t); diff --git a/include/linux/sunrpc/metrics.h b/include/linux/sunrpc/metrics.h index 1b3751327575..0ee3f7052846 100644 --- a/include/linux/sunrpc/metrics.h +++ b/include/linux/sunrpc/metrics.h @@ -30,7 +30,7 @@ #include <linux/ktime.h> #include <linux/spinlock.h> -#define RPC_IOSTATS_VERS "1.0" +#define RPC_IOSTATS_VERS "1.1" struct rpc_iostats { spinlock_t om_lock; @@ -66,6 +66,11 @@ struct rpc_iostats { ktime_t om_queue, /* queued for xmit */ om_rtt, /* RPC RTT */ om_execute; /* RPC execution */ + /* + * The count of operations that complete with tk_status < 0. + * These statuses usually indicate error conditions. + */ + unsigned long om_error_status; } ____cacheline_aligned; struct rpc_task; diff --git a/include/linux/sunrpc/sched.h b/include/linux/sunrpc/sched.h index d0e451868f02..baa3ecdb882f 100644 --- a/include/linux/sunrpc/sched.h +++ b/include/linux/sunrpc/sched.h @@ -126,6 +126,7 @@ struct rpc_task_setup { #define RPC_CALL_MAJORSEEN 0x0020 /* major timeout seen */ #define RPC_TASK_ROOTCREDS 0x0040 /* force root creds */ #define RPC_TASK_DYNAMIC 0x0080 /* task was kmalloc'ed */ +#define RPC_TASK_NO_ROUND_ROBIN 0x0100 /* send requests on "main" xprt */ #define RPC_TASK_SOFT 0x0200 /* Use soft timeouts */ #define RPC_TASK_SOFTCONN 0x0400 /* Fail if can't connect */ #define RPC_TASK_SENT 0x0800 /* message was sent */ @@ -183,8 +184,9 @@ struct rpc_task_setup { #define RPC_NR_PRIORITY (1 + RPC_PRIORITY_PRIVILEGED - RPC_PRIORITY_LOW) struct rpc_timer { - struct timer_list timer; struct list_head list; + unsigned long expires; + struct delayed_work dwork; }; /* diff --git a/include/linux/sunrpc/xprt.h b/include/linux/sunrpc/xprt.h index a6d9fce7f20e..13e108bcc9eb 100644 --- a/include/linux/sunrpc/xprt.h +++ b/include/linux/sunrpc/xprt.h @@ -158,6 +158,7 @@ struct rpc_xprt_ops { int (*bc_setup)(struct rpc_xprt *xprt, unsigned int min_reqs); size_t (*bc_maxpayload)(struct rpc_xprt *xprt); + unsigned int (*bc_num_slots)(struct rpc_xprt *xprt); void (*bc_free_rqst)(struct rpc_rqst *rqst); void (*bc_destroy)(struct rpc_xprt *xprt, unsigned int max_reqs); @@ -238,6 +239,7 @@ struct rpc_xprt { /* * Send stuff */ + atomic_long_t queuelen; spinlock_t transport_lock; /* lock transport info */ spinlock_t reserve_lock; /* lock slot table */ spinlock_t queue_lock; /* send/receive queue lock */ @@ -250,8 +252,9 @@ struct rpc_xprt { #if defined(CONFIG_SUNRPC_BACKCHANNEL) struct svc_serv *bc_serv; /* The RPC service which will */ /* process the callback */ - int bc_alloc_count; /* Total number of preallocs */ - atomic_t bc_free_slots; + unsigned int bc_alloc_max; + unsigned int bc_alloc_count; /* Total number of preallocs */ + atomic_t bc_slot_count; /* Number of allocated slots */ spinlock_t bc_pa_lock; /* Protects the preallocated * items */ struct list_head bc_pa_list; /* List of preallocated @@ -334,6 +337,9 @@ struct xprt_class { */ struct rpc_xprt *xprt_create_transport(struct xprt_create *args); void xprt_connect(struct rpc_task *task); +unsigned long xprt_reconnect_delay(const struct rpc_xprt *xprt); +void xprt_reconnect_backoff(struct rpc_xprt *xprt, + unsigned long init_to); void xprt_reserve(struct rpc_task *task); void xprt_retry_reserve(struct rpc_task *task); int xprt_reserve_xprt(struct rpc_xprt *xprt, struct rpc_task *task); diff --git a/include/linux/sunrpc/xprtmultipath.h b/include/linux/sunrpc/xprtmultipath.h index af1257c030d2..c6cce3fbf29d 100644 --- a/include/linux/sunrpc/xprtmultipath.h +++ b/include/linux/sunrpc/xprtmultipath.h @@ -15,6 +15,8 @@ struct rpc_xprt_switch { struct kref xps_kref; unsigned int xps_nxprts; + unsigned int xps_nactive; + atomic_long_t xps_queuelen; struct list_head xps_xprt_list; struct net * xps_net; diff --git a/include/linux/sunrpc/xprtsock.h b/include/linux/sunrpc/xprtsock.h index b81d0b3e0799..7638dbe7bc50 100644 --- a/include/linux/sunrpc/xprtsock.h +++ b/include/linux/sunrpc/xprtsock.h @@ -56,6 +56,7 @@ struct sock_xprt { */ unsigned long sock_state; struct delayed_work connect_worker; + struct work_struct error_worker; struct work_struct recv_worker; struct mutex recv_mutex; struct sockaddr_storage srcaddr; @@ -84,6 +85,10 @@ struct sock_xprt { #define XPRT_SOCK_CONNECTING 1U #define XPRT_SOCK_DATA_READY (2) #define XPRT_SOCK_UPD_TIMEOUT (3) +#define XPRT_SOCK_WAKE_ERROR (4) +#define XPRT_SOCK_WAKE_WRITE (5) +#define XPRT_SOCK_WAKE_PENDING (6) +#define XPRT_SOCK_WAKE_DISCONNECT (7) #endif /* __KERNEL__ */ diff --git a/include/trace/events/rpcrdma.h b/include/trace/events/rpcrdma.h index df9851cb82b2..f6a4eaa85a3e 100644 --- a/include/trace/events/rpcrdma.h +++ b/include/trace/events/rpcrdma.h @@ -181,18 +181,6 @@ DECLARE_EVENT_CLASS(xprtrdma_wrch_event, ), \ TP_ARGS(task, mr, nsegs)) -TRACE_DEFINE_ENUM(FRWR_IS_INVALID); -TRACE_DEFINE_ENUM(FRWR_IS_VALID); -TRACE_DEFINE_ENUM(FRWR_FLUSHED_FR); -TRACE_DEFINE_ENUM(FRWR_FLUSHED_LI); - -#define xprtrdma_show_frwr_state(x) \ - __print_symbolic(x, \ - { FRWR_IS_INVALID, "INVALID" }, \ - { FRWR_IS_VALID, "VALID" }, \ - { FRWR_FLUSHED_FR, "FLUSHED_FR" }, \ - { FRWR_FLUSHED_LI, "FLUSHED_LI" }) - DECLARE_EVENT_CLASS(xprtrdma_frwr_done, TP_PROTO( const struct ib_wc *wc, @@ -203,22 +191,19 @@ DECLARE_EVENT_CLASS(xprtrdma_frwr_done, TP_STRUCT__entry( __field(const void *, mr) - __field(unsigned int, state) __field(unsigned int, status) __field(unsigned int, vendor_err) ), TP_fast_assign( __entry->mr = container_of(frwr, struct rpcrdma_mr, frwr); - __entry->state = frwr->fr_state; __entry->status = wc->status; __entry->vendor_err = __entry->status ? wc->vendor_err : 0; ), TP_printk( - "mr=%p state=%s: %s (%u/0x%x)", - __entry->mr, xprtrdma_show_frwr_state(__entry->state), - rdma_show_wc_status(__entry->status), + "mr=%p: %s (%u/0x%x)", + __entry->mr, rdma_show_wc_status(__entry->status), __entry->status, __entry->vendor_err ) ); @@ -390,6 +375,37 @@ DEFINE_RXPRT_EVENT(xprtrdma_op_inject_dsc); DEFINE_RXPRT_EVENT(xprtrdma_op_close); DEFINE_RXPRT_EVENT(xprtrdma_op_connect); +TRACE_EVENT(xprtrdma_op_set_cto, + TP_PROTO( + const struct rpcrdma_xprt *r_xprt, + unsigned long connect, + unsigned long reconnect + ), + + TP_ARGS(r_xprt, connect, reconnect), + + TP_STRUCT__entry( + __field(const void *, r_xprt) + __field(unsigned long, connect) + __field(unsigned long, reconnect) + __string(addr, rpcrdma_addrstr(r_xprt)) + __string(port, rpcrdma_portstr(r_xprt)) + ), + + TP_fast_assign( + __entry->r_xprt = r_xprt; + __entry->connect = connect; + __entry->reconnect = reconnect; + __assign_str(addr, rpcrdma_addrstr(r_xprt)); + __assign_str(port, rpcrdma_portstr(r_xprt)); + ), + + TP_printk("peer=[%s]:%s r_xprt=%p: connect=%lu reconnect=%lu", + __get_str(addr), __get_str(port), __entry->r_xprt, + __entry->connect / HZ, __entry->reconnect / HZ + ) +); + TRACE_EVENT(xprtrdma_qp_event, TP_PROTO( const struct rpcrdma_xprt *r_xprt, @@ -470,13 +486,12 @@ TRACE_DEFINE_ENUM(rpcrdma_replych); TRACE_EVENT(xprtrdma_marshal, TP_PROTO( - const struct rpc_rqst *rqst, - unsigned int hdrlen, + const struct rpcrdma_req *req, unsigned int rtype, unsigned int wtype ), - TP_ARGS(rqst, hdrlen, rtype, wtype), + TP_ARGS(req, rtype, wtype), TP_STRUCT__entry( __field(unsigned int, task_id) @@ -491,10 +506,12 @@ TRACE_EVENT(xprtrdma_marshal, ), TP_fast_assign( + const struct rpc_rqst *rqst = &req->rl_slot; + __entry->task_id = rqst->rq_task->tk_pid; __entry->client_id = rqst->rq_task->tk_client->cl_clid; __entry->xid = be32_to_cpu(rqst->rq_xid); - __entry->hdrlen = hdrlen; + __entry->hdrlen = req->rl_hdrbuf.len; __entry->headlen = rqst->rq_snd_buf.head[0].iov_len; __entry->pagelen = rqst->rq_snd_buf.page_len; __entry->taillen = rqst->rq_snd_buf.tail[0].iov_len; @@ -538,6 +555,33 @@ TRACE_EVENT(xprtrdma_marshal_failed, ) ); +TRACE_EVENT(xprtrdma_prepsend_failed, + TP_PROTO(const struct rpc_rqst *rqst, + int ret + ), + + TP_ARGS(rqst, ret), + + TP_STRUCT__entry( + __field(unsigned int, task_id) + __field(unsigned int, client_id) + __field(u32, xid) + __field(int, ret) + ), + + TP_fast_assign( + __entry->task_id = rqst->rq_task->tk_pid; + __entry->client_id = rqst->rq_task->tk_client->cl_clid; + __entry->xid = be32_to_cpu(rqst->rq_xid); + __entry->ret = ret; + ), + + TP_printk("task:%u@%u xid=0x%08x: ret=%d", + __entry->task_id, __entry->client_id, __entry->xid, + __entry->ret + ) +); + TRACE_EVENT(xprtrdma_post_send, TP_PROTO( const struct rpcrdma_req *req, @@ -559,7 +603,8 @@ TRACE_EVENT(xprtrdma_post_send, const struct rpc_rqst *rqst = &req->rl_slot; __entry->task_id = rqst->rq_task->tk_pid; - __entry->client_id = rqst->rq_task->tk_client->cl_clid; + __entry->client_id = rqst->rq_task->tk_client ? + rqst->rq_task->tk_client->cl_clid : -1; __entry->req = req; __entry->num_sge = req->rl_sendctx->sc_wr.num_sge; __entry->signaled = req->rl_sendctx->sc_wr.send_flags & @@ -698,6 +743,7 @@ TRACE_EVENT(xprtrdma_wc_receive, DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_fastreg); DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li); DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li_wake); +DEFINE_FRWR_DONE_EVENT(xprtrdma_wc_li_done); TRACE_EVENT(xprtrdma_frwr_alloc, TP_PROTO( diff --git a/net/sunrpc/Kconfig b/net/sunrpc/Kconfig index aa307505ca54..3bcf985507be 100644 --- a/net/sunrpc/Kconfig +++ b/net/sunrpc/Kconfig @@ -35,7 +35,7 @@ config RPCSEC_GSS_KRB5 If unsure, say Y. -config CONFIG_SUNRPC_DISABLE_INSECURE_ENCTYPES +config SUNRPC_DISABLE_INSECURE_ENCTYPES bool "Secure RPC: Disable insecure Kerberos encryption types" depends on RPCSEC_GSS_KRB5 default n diff --git a/net/sunrpc/backchannel_rqst.c b/net/sunrpc/backchannel_rqst.c index c47d82622fd1..339e8c077c2d 100644 --- a/net/sunrpc/backchannel_rqst.c +++ b/net/sunrpc/backchannel_rqst.c @@ -31,25 +31,20 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #define RPCDBG_FACILITY RPCDBG_TRANS #endif +#define BC_MAX_SLOTS 64U + +unsigned int xprt_bc_max_slots(struct rpc_xprt *xprt) +{ + return BC_MAX_SLOTS; +} + /* * Helper routines that track the number of preallocation elements * on the transport. */ static inline int xprt_need_to_requeue(struct rpc_xprt *xprt) { - return xprt->bc_alloc_count < atomic_read(&xprt->bc_free_slots); -} - -static inline void xprt_inc_alloc_count(struct rpc_xprt *xprt, unsigned int n) -{ - atomic_add(n, &xprt->bc_free_slots); - xprt->bc_alloc_count += n; -} - -static inline int xprt_dec_alloc_count(struct rpc_xprt *xprt, unsigned int n) -{ - atomic_sub(n, &xprt->bc_free_slots); - return xprt->bc_alloc_count -= n; + return xprt->bc_alloc_count < xprt->bc_alloc_max; } /* @@ -145,6 +140,9 @@ int xprt_setup_bc(struct rpc_xprt *xprt, unsigned int min_reqs) dprintk("RPC: setup backchannel transport\n"); + if (min_reqs > BC_MAX_SLOTS) + min_reqs = BC_MAX_SLOTS; + /* * We use a temporary list to keep track of the preallocated * buffers. Once we're done building the list we splice it @@ -172,7 +170,9 @@ int xprt_setup_bc(struct rpc_xprt *xprt, unsigned int min_reqs) */ spin_lock(&xprt->bc_pa_lock); list_splice(&tmp_list, &xprt->bc_pa_list); - xprt_inc_alloc_count(xprt, min_reqs); + xprt->bc_alloc_count += min_reqs; + xprt->bc_alloc_max += min_reqs; + atomic_add(min_reqs, &xprt->bc_slot_count); spin_unlock(&xprt->bc_pa_lock); dprintk("RPC: setup backchannel transport done\n"); @@ -220,11 +220,13 @@ void xprt_destroy_bc(struct rpc_xprt *xprt, unsigned int max_reqs) goto out; spin_lock_bh(&xprt->bc_pa_lock); - xprt_dec_alloc_count(xprt, max_reqs); + xprt->bc_alloc_max -= max_reqs; list_for_each_entry_safe(req, tmp, &xprt->bc_pa_list, rq_bc_pa_list) { dprintk("RPC: req=%p\n", req); list_del(&req->rq_bc_pa_list); xprt_free_allocation(req); + xprt->bc_alloc_count--; + atomic_dec(&xprt->bc_slot_count); if (--max_reqs == 0) break; } @@ -241,13 +243,14 @@ static struct rpc_rqst *xprt_get_bc_request(struct rpc_xprt *xprt, __be32 xid, struct rpc_rqst *req = NULL; dprintk("RPC: allocate a backchannel request\n"); - if (atomic_read(&xprt->bc_free_slots) <= 0) - goto not_found; if (list_empty(&xprt->bc_pa_list)) { if (!new) goto not_found; + if (atomic_read(&xprt->bc_slot_count) >= BC_MAX_SLOTS) + goto not_found; list_add_tail(&new->rq_bc_pa_list, &xprt->bc_pa_list); xprt->bc_alloc_count++; + atomic_inc(&xprt->bc_slot_count); } req = list_first_entry(&xprt->bc_pa_list, struct rpc_rqst, rq_bc_pa_list); @@ -291,6 +294,7 @@ void xprt_free_bc_rqst(struct rpc_rqst *req) if (xprt_need_to_requeue(xprt)) { list_add_tail(&req->rq_bc_pa_list, &xprt->bc_pa_list); xprt->bc_alloc_count++; + atomic_inc(&xprt->bc_slot_count); req = NULL; } spin_unlock_bh(&xprt->bc_pa_lock); @@ -357,7 +361,7 @@ void xprt_complete_bc_request(struct rpc_rqst *req, uint32_t copied) spin_lock(&xprt->bc_pa_lock); list_del(&req->rq_bc_pa_list); - xprt_dec_alloc_count(xprt, 1); + xprt->bc_alloc_count--; spin_unlock(&xprt->bc_pa_lock); req->rq_private_buf.len = copied; diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index b03bfa055c08..d8679b6027e9 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -528,6 +528,8 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args) .bc_xprt = args->bc_xprt, }; char servername[48]; + struct rpc_clnt *clnt; + int i; if (args->bc_xprt) { WARN_ON_ONCE(!(args->protocol & XPRT_TRANSPORT_BC)); @@ -590,7 +592,15 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args) if (args->flags & RPC_CLNT_CREATE_NONPRIVPORT) xprt->resvport = 0; - return rpc_create_xprt(args, xprt); + clnt = rpc_create_xprt(args, xprt); + if (IS_ERR(clnt) || args->nconnect <= 1) + return clnt; + + for (i = 0; i < args->nconnect - 1; i++) { + if (rpc_clnt_add_xprt(clnt, &xprtargs, NULL, NULL) < 0) + break; + } + return clnt; } EXPORT_SYMBOL_GPL(rpc_create); @@ -968,13 +978,46 @@ out: } EXPORT_SYMBOL_GPL(rpc_bind_new_program); +struct rpc_xprt * +rpc_task_get_xprt(struct rpc_clnt *clnt, struct rpc_xprt *xprt) +{ + struct rpc_xprt_switch *xps; + + if (!xprt) + return NULL; + rcu_read_lock(); + xps = rcu_dereference(clnt->cl_xpi.xpi_xpswitch); + atomic_long_inc(&xps->xps_queuelen); + rcu_read_unlock(); + atomic_long_inc(&xprt->queuelen); + + return xprt; +} + +static void +rpc_task_release_xprt(struct rpc_clnt *clnt, struct rpc_xprt *xprt) +{ + struct rpc_xprt_switch *xps; + + atomic_long_dec(&xprt->queuelen); + rcu_read_lock(); + xps = rcu_dereference(clnt->cl_xpi.xpi_xpswitch); + atomic_long_dec(&xps->xps_queuelen); + rcu_read_unlock(); + + xprt_put(xprt); +} + void rpc_task_release_transport(struct rpc_task *task) { struct rpc_xprt *xprt = task->tk_xprt; if (xprt) { task->tk_xprt = NULL; - xprt_put(xprt); + if (task->tk_client) + rpc_task_release_xprt(task->tk_client, xprt); + else + xprt_put(xprt); } } EXPORT_SYMBOL_GPL(rpc_task_release_transport); @@ -983,6 +1026,7 @@ void rpc_task_release_client(struct rpc_task *task) { struct rpc_clnt *clnt = task->tk_client; + rpc_task_release_transport(task); if (clnt != NULL) { /* Remove from client task list */ spin_lock(&clnt->cl_lock); @@ -992,14 +1036,34 @@ void rpc_task_release_client(struct rpc_task *task) rpc_release_client(clnt); } - rpc_task_release_transport(task); +} + +static struct rpc_xprt * +rpc_task_get_first_xprt(struct rpc_clnt *clnt) +{ + struct rpc_xprt *xprt; + + rcu_read_lock(); + xprt = xprt_get(rcu_dereference(clnt->cl_xprt)); + rcu_read_unlock(); + return rpc_task_get_xprt(clnt, xprt); +} + +static struct rpc_xprt * +rpc_task_get_next_xprt(struct rpc_clnt *clnt) +{ + return rpc_task_get_xprt(clnt, xprt_iter_get_next(&clnt->cl_xpi)); } static void rpc_task_set_transport(struct rpc_task *task, struct rpc_clnt *clnt) { - if (!task->tk_xprt) - task->tk_xprt = xprt_iter_get_next(&clnt->cl_xpi); + if (task->tk_xprt) + return; + if (task->tk_flags & RPC_TASK_NO_ROUND_ROBIN) + task->tk_xprt = rpc_task_get_first_xprt(clnt); + else + task->tk_xprt = rpc_task_get_next_xprt(clnt); } static @@ -1462,6 +1526,19 @@ size_t rpc_max_bc_payload(struct rpc_clnt *clnt) } EXPORT_SYMBOL_GPL(rpc_max_bc_payload); +unsigned int rpc_num_bc_slots(struct rpc_clnt *clnt) +{ + struct rpc_xprt *xprt; + unsigned int ret; + + rcu_read_lock(); + xprt = rcu_dereference(clnt->cl_xprt); + ret = xprt->ops->bc_num_slots(xprt); + rcu_read_unlock(); + return ret; +} +EXPORT_SYMBOL_GPL(rpc_num_bc_slots); + /** * rpc_force_rebind - force transport to check that remote port is unchanged * @clnt: client to rebind @@ -1788,6 +1865,7 @@ rpc_xdr_encode(struct rpc_task *task) req->rq_snd_buf.head[0].iov_len = 0; xdr_init_encode(&xdr, &req->rq_snd_buf, req->rq_snd_buf.head[0].iov_base, req); + xdr_free_bvec(&req->rq_snd_buf); if (rpc_encode_header(task, &xdr)) return; @@ -1827,8 +1905,6 @@ call_encode(struct rpc_task *task) rpc_call_rpcerror(task, task->tk_status); } return; - } else { - xprt_request_prepare(task->tk_rqstp); } /* Add task to reply queue before transmission to avoid races */ @@ -2696,6 +2772,10 @@ int rpc_clnt_test_and_add_xprt(struct rpc_clnt *clnt, return -ENOMEM; data->xps = xprt_switch_get(xps); data->xprt = xprt_get(xprt); + if (rpc_xprt_switch_has_addr(data->xps, (struct sockaddr *)&xprt->addr)) { + rpc_cb_add_xprt_release(data); + goto success; + } task = rpc_call_null_helper(clnt, xprt, NULL, RPC_TASK_SOFT|RPC_TASK_SOFTCONN|RPC_TASK_ASYNC|RPC_TASK_NULLCREDS, @@ -2703,6 +2783,7 @@ int rpc_clnt_test_and_add_xprt(struct rpc_clnt *clnt, if (IS_ERR(task)) return PTR_ERR(task); rpc_put_task(task); +success: return 1; } EXPORT_SYMBOL_GPL(rpc_clnt_test_and_add_xprt); diff --git a/net/sunrpc/debugfs.c b/net/sunrpc/debugfs.c index 707d7aab1546..fd9bca242724 100644 --- a/net/sunrpc/debugfs.c +++ b/net/sunrpc/debugfs.c @@ -1,5 +1,5 @@ // SPDX-License-Identifier: GPL-2.0 -/** +/* * debugfs interface for sunrpc * * (c) 2014 Jeff Layton <jlayton@primarydata.com> @@ -117,12 +117,37 @@ static const struct file_operations tasks_fops = { .release = tasks_release, }; +static int do_xprt_debugfs(struct rpc_clnt *clnt, struct rpc_xprt *xprt, void *numv) +{ + int len; + char name[24]; /* enough for "../../rpc_xprt/ + 8 hex digits + NULL */ + char link[9]; /* enough for 8 hex digits + NULL */ + int *nump = numv; + + if (IS_ERR_OR_NULL(xprt->debugfs)) + return 0; + len = snprintf(name, sizeof(name), "../../rpc_xprt/%s", + xprt->debugfs->d_name.name); + if (len > sizeof(name)) + return -1; + if (*nump == 0) + strcpy(link, "xprt"); + else { + len = snprintf(link, sizeof(link), "xprt%d", *nump); + if (len > sizeof(link)) + return -1; + } + debugfs_create_symlink(link, clnt->cl_debugfs, name); + (*nump)++; + return 0; +} + void rpc_clnt_debugfs_register(struct rpc_clnt *clnt) { int len; - char name[24]; /* enough for "../../rpc_xprt/ + 8 hex digits + NULL */ - struct rpc_xprt *xprt; + char name[9]; /* enough for 8 hex digits + NULL */ + int xprtnum = 0; len = snprintf(name, sizeof(name), "%x", clnt->cl_clid); if (len >= sizeof(name)) @@ -135,26 +160,7 @@ rpc_clnt_debugfs_register(struct rpc_clnt *clnt) debugfs_create_file("tasks", S_IFREG | 0400, clnt->cl_debugfs, clnt, &tasks_fops); - rcu_read_lock(); - xprt = rcu_dereference(clnt->cl_xprt); - /* no "debugfs" dentry? Don't bother with the symlink. */ - if (IS_ERR_OR_NULL(xprt->debugfs)) { - rcu_read_unlock(); - return; - } - len = snprintf(name, sizeof(name), "../../rpc_xprt/%s", - xprt->debugfs->d_name.name); - rcu_read_unlock(); - - if (len >= sizeof(name)) - goto out_err; - - debugfs_create_symlink("xprt", clnt->cl_debugfs, name); - - return; -out_err: - debugfs_remove_recursive(clnt->cl_debugfs); - clnt->cl_debugfs = NULL; + rpc_clnt_iterate_for_each_xprt(clnt, do_xprt_debugfs, &xprtnum); } void diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index a2c114812717..1f275aba786f 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -23,6 +23,7 @@ #include <linux/sched/mm.h> #include <linux/sunrpc/clnt.h> +#include <linux/sunrpc/metrics.h> #include "sunrpc.h" @@ -46,7 +47,7 @@ static mempool_t *rpc_buffer_mempool __read_mostly; static void rpc_async_schedule(struct work_struct *); static void rpc_release_task(struct rpc_task *task); -static void __rpc_queue_timer_fn(struct timer_list *t); +static void __rpc_queue_timer_fn(struct work_struct *); /* * RPC tasks sit here while waiting for conditions to improve. @@ -58,6 +59,7 @@ static struct rpc_wait_queue delay_queue; */ struct workqueue_struct *rpciod_workqueue __read_mostly; struct workqueue_struct *xprtiod_workqueue __read_mostly; +EXPORT_SYMBOL_GPL(xprtiod_workqueue); unsigned long rpc_task_timeout(const struct rpc_task *task) @@ -87,13 +89,19 @@ __rpc_disable_timer(struct rpc_wait_queue *queue, struct rpc_task *task) task->tk_timeout = 0; list_del(&task->u.tk_wait.timer_list); if (list_empty(&queue->timer_list.list)) - del_timer(&queue->timer_list.timer); + cancel_delayed_work(&queue->timer_list.dwork); } static void rpc_set_queue_timer(struct rpc_wait_queue *queue, unsigned long expires) { - timer_reduce(&queue->timer_list.timer, expires); + unsigned long now = jiffies; + queue->timer_list.expires = expires; + if (time_before_eq(expires, now)) + expires = 0; + else + expires -= now; + mod_delayed_work(rpciod_workqueue, &queue->timer_list.dwork, expires); } /* @@ -107,7 +115,8 @@ __rpc_add_timer(struct rpc_wait_queue *queue, struct rpc_task *task, task->tk_pid, jiffies_to_msecs(timeout - jiffies)); task->tk_timeout = timeout; - rpc_set_queue_timer(queue, timeout); + if (list_empty(&queue->timer_list.list) || time_before(timeout, queue->timer_list.expires)) + rpc_set_queue_timer(queue, timeout); list_add(&task->u.tk_wait.timer_list, &queue->timer_list.list); } @@ -250,7 +259,8 @@ static void __rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const c queue->maxpriority = nr_queues - 1; rpc_reset_waitqueue_priority(queue); queue->qlen = 0; - timer_setup(&queue->timer_list.timer, __rpc_queue_timer_fn, 0); + queue->timer_list.expires = 0; + INIT_DEFERRABLE_WORK(&queue->timer_list.dwork, __rpc_queue_timer_fn); INIT_LIST_HEAD(&queue->timer_list.list); rpc_assign_waitqueue_name(queue, qname); } @@ -269,7 +279,7 @@ EXPORT_SYMBOL_GPL(rpc_init_wait_queue); void rpc_destroy_wait_queue(struct rpc_wait_queue *queue) { - del_timer_sync(&queue->timer_list.timer); + cancel_delayed_work_sync(&queue->timer_list.dwork); } EXPORT_SYMBOL_GPL(rpc_destroy_wait_queue); @@ -424,9 +434,9 @@ void rpc_sleep_on_timeout(struct rpc_wait_queue *q, struct rpc_task *task, /* * Protect the queue operations. */ - spin_lock_bh(&q->lock); + spin_lock(&q->lock); __rpc_sleep_on_priority_timeout(q, task, timeout, task->tk_priority); - spin_unlock_bh(&q->lock); + spin_unlock(&q->lock); } EXPORT_SYMBOL_GPL(rpc_sleep_on_timeout); @@ -442,9 +452,9 @@ void rpc_sleep_on(struct rpc_wait_queue *q, struct rpc_task *task, /* * Protect the queue operations. */ - spin_lock_bh(&q->lock); + spin_lock(&q->lock); __rpc_sleep_on_priority(q, task, task->tk_priority); - spin_unlock_bh(&q->lock); + spin_unlock(&q->lock); } EXPORT_SYMBOL_GPL(rpc_sleep_on); @@ -458,9 +468,9 @@ void rpc_sleep_on_priority_timeout(struct rpc_wait_queue *q, /* * Protect the queue operations. */ - spin_lock_bh(&q->lock); + spin_lock(&q->lock); __rpc_sleep_on_priority_timeout(q, task, timeout, priority); - spin_unlock_bh(&q->lock); + spin_unlock(&q->lock); } EXPORT_SYMBOL_GPL(rpc_sleep_on_priority_timeout); @@ -475,9 +485,9 @@ void rpc_sleep_on_priority(struct rpc_wait_queue *q, struct rpc_task *task, /* * Protect the queue operations. */ - spin_lock_bh(&q->lock); + spin_lock(&q->lock); __rpc_sleep_on_priority(q, task, priority); - spin_unlock_bh(&q->lock); + spin_unlock(&q->lock); } EXPORT_SYMBOL_GPL(rpc_sleep_on_priority); @@ -555,9 +565,9 @@ void rpc_wake_up_queued_task_on_wq(struct workqueue_struct *wq, { if (!RPC_IS_QUEUED(task)) return; - spin_lock_bh(&queue->lock); + spin_lock(&queue->lock); rpc_wake_up_task_on_wq_queue_locked(wq, queue, task); - spin_unlock_bh(&queue->lock); + spin_unlock(&queue->lock); } /* @@ -567,9 +577,9 @@ void rpc_wake_up_queued_task(struct rpc_wait_queue *queue, struct rpc_task *task { if (!RPC_IS_QUEUED(task)) return; - spin_lock_bh(&queue->lock); + spin_lock(&queue->lock); rpc_wake_up_task_queue_locked(queue, task); - spin_unlock_bh(&queue->lock); + spin_unlock(&queue->lock); } EXPORT_SYMBOL_GPL(rpc_wake_up_queued_task); @@ -602,9 +612,9 @@ rpc_wake_up_queued_task_set_status(struct rpc_wait_queue *queue, { if (!RPC_IS_QUEUED(task)) return; - spin_lock_bh(&queue->lock); + spin_lock(&queue->lock); rpc_wake_up_task_queue_set_status_locked(queue, task, status); - spin_unlock_bh(&queue->lock); + spin_unlock(&queue->lock); } /* @@ -667,12 +677,12 @@ struct rpc_task *rpc_wake_up_first_on_wq(struct workqueue_struct *wq, dprintk("RPC: wake_up_first(%p \"%s\")\n", queue, rpc_qname(queue)); - spin_lock_bh(&queue->lock); + spin_lock(&queue->lock); task = __rpc_find_next_queued(queue); if (task != NULL) task = rpc_wake_up_task_on_wq_queue_action_locked(wq, queue, task, func, data); - spin_unlock_bh(&queue->lock); + spin_unlock(&queue->lock); return task; } @@ -711,7 +721,7 @@ void rpc_wake_up(struct rpc_wait_queue *queue) { struct list_head *head; - spin_lock_bh(&queue->lock); + spin_lock(&queue->lock); head = &queue->tasks[queue->maxpriority]; for (;;) { while (!list_empty(head)) { @@ -725,7 +735,7 @@ void rpc_wake_up(struct rpc_wait_queue *queue) break; head--; } - spin_unlock_bh(&queue->lock); + spin_unlock(&queue->lock); } EXPORT_SYMBOL_GPL(rpc_wake_up); @@ -740,7 +750,7 @@ void rpc_wake_up_status(struct rpc_wait_queue *queue, int status) { struct list_head *head; - spin_lock_bh(&queue->lock); + spin_lock(&queue->lock); head = &queue->tasks[queue->maxpriority]; for (;;) { while (!list_empty(head)) { @@ -755,13 +765,15 @@ void rpc_wake_up_status(struct rpc_wait_queue *queue, int status) break; head--; } - spin_unlock_bh(&queue->lock); + spin_unlock(&queue->lock); } EXPORT_SYMBOL_GPL(rpc_wake_up_status); -static void __rpc_queue_timer_fn(struct timer_list *t) +static void __rpc_queue_timer_fn(struct work_struct *work) { - struct rpc_wait_queue *queue = from_timer(queue, t, timer_list.timer); + struct rpc_wait_queue *queue = container_of(work, + struct rpc_wait_queue, + timer_list.dwork.work); struct rpc_task *task, *n; unsigned long expires, now, timeo; @@ -832,6 +844,10 @@ rpc_reset_task_statistics(struct rpc_task *task) void rpc_exit_task(struct rpc_task *task) { task->tk_action = NULL; + if (task->tk_ops->rpc_count_stats) + task->tk_ops->rpc_count_stats(task, task->tk_calldata); + else if (task->tk_client) + rpc_count_iostats(task, task->tk_client->cl_metrics); if (task->tk_ops->rpc_call_done != NULL) { task->tk_ops->rpc_call_done(task, task->tk_calldata); if (task->tk_action != NULL) { @@ -927,13 +943,13 @@ static void __rpc_execute(struct rpc_task *task) * rpc_task pointer may still be dereferenced. */ queue = task->tk_waitqueue; - spin_lock_bh(&queue->lock); + spin_lock(&queue->lock); if (!RPC_IS_QUEUED(task)) { - spin_unlock_bh(&queue->lock); + spin_unlock(&queue->lock); continue; } rpc_clear_running(task); - spin_unlock_bh(&queue->lock); + spin_unlock(&queue->lock); if (task_is_async) return; @@ -1076,7 +1092,8 @@ static void rpc_init_task(struct rpc_task *task, const struct rpc_task_setup *ta /* Initialize workqueue for async tasks */ task->tk_workqueue = task_setup_data->workqueue; - task->tk_xprt = xprt_get(task_setup_data->rpc_xprt); + task->tk_xprt = rpc_task_get_xprt(task_setup_data->rpc_client, + xprt_get(task_setup_data->rpc_xprt)); task->tk_op_cred = get_rpccred(task_setup_data->rpc_op_cred); diff --git a/net/sunrpc/stats.c b/net/sunrpc/stats.c index 2b6dc7e5f74f..7c74197c2ecf 100644 --- a/net/sunrpc/stats.c +++ b/net/sunrpc/stats.c @@ -177,6 +177,8 @@ void rpc_count_iostats_metrics(const struct rpc_task *task, execute = ktime_sub(now, task->tk_start); op_metrics->om_execute = ktime_add(op_metrics->om_execute, execute); + if (task->tk_status < 0) + op_metrics->om_error_status++; spin_unlock(&op_metrics->om_lock); @@ -219,13 +221,14 @@ static void _add_rpc_iostats(struct rpc_iostats *a, struct rpc_iostats *b) a->om_queue = ktime_add(a->om_queue, b->om_queue); a->om_rtt = ktime_add(a->om_rtt, b->om_rtt); a->om_execute = ktime_add(a->om_execute, b->om_execute); + a->om_error_status += b->om_error_status; } static void _print_rpc_iostats(struct seq_file *seq, struct rpc_iostats *stats, int op, const struct rpc_procinfo *procs) { _print_name(seq, op, procs); - seq_printf(seq, "%lu %lu %lu %Lu %Lu %Lu %Lu %Lu\n", + seq_printf(seq, "%lu %lu %lu %llu %llu %llu %llu %llu %lu\n", stats->om_ops, stats->om_ntrans, stats->om_timeouts, @@ -233,12 +236,20 @@ static void _print_rpc_iostats(struct seq_file *seq, struct rpc_iostats *stats, stats->om_bytes_recv, ktime_to_ms(stats->om_queue), ktime_to_ms(stats->om_rtt), - ktime_to_ms(stats->om_execute)); + ktime_to_ms(stats->om_execute), + stats->om_error_status); +} + +static int do_print_stats(struct rpc_clnt *clnt, struct rpc_xprt *xprt, void *seqv) +{ + struct seq_file *seq = seqv; + + xprt->ops->print_stats(xprt, seq); + return 0; } void rpc_clnt_show_stats(struct seq_file *seq, struct rpc_clnt *clnt) { - struct rpc_xprt *xprt; unsigned int op, maxproc = clnt->cl_maxproc; if (!clnt->cl_metrics) @@ -248,11 +259,7 @@ void rpc_clnt_show_stats(struct seq_file *seq, struct rpc_clnt *clnt) seq_printf(seq, "p/v: %u/%u (%s)\n", clnt->cl_prog, clnt->cl_vers, clnt->cl_program->name); - rcu_read_lock(); - xprt = rcu_dereference(clnt->cl_xprt); - if (xprt) - xprt->ops->print_stats(xprt, seq); - rcu_read_unlock(); + rpc_clnt_iterate_for_each_xprt(clnt, do_print_stats, seq); seq_printf(seq, "\tper-op statistics\n"); for (op = 0; op < maxproc; op++) { diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c index e15cb704453e..220b79988000 100644 --- a/net/sunrpc/svc.c +++ b/net/sunrpc/svc.c @@ -1595,7 +1595,7 @@ bc_svc_process(struct svc_serv *serv, struct rpc_rqst *req, /* Parse and execute the bc call */ proc_error = svc_process_common(rqstp, argv, resv); - atomic_inc(&req->rq_xprt->bc_free_slots); + atomic_dec(&req->rq_xprt->bc_slot_count); if (!proc_error) { /* Processing error: drop the request */ xprt_free_bc_request(req); diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index f6c82b1651e7..783748dc5e6f 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -302,9 +302,9 @@ static inline int xprt_lock_write(struct rpc_xprt *xprt, struct rpc_task *task) if (test_bit(XPRT_LOCKED, &xprt->state) && xprt->snd_task == task) return 1; - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); retval = xprt->ops->reserve_xprt(xprt, task); - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); return retval; } @@ -381,9 +381,9 @@ static inline void xprt_release_write(struct rpc_xprt *xprt, struct rpc_task *ta { if (xprt->snd_task != task) return; - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); xprt->ops->release_xprt(xprt, task); - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); } /* @@ -435,9 +435,9 @@ xprt_request_get_cong(struct rpc_xprt *xprt, struct rpc_rqst *req) if (req->rq_cong) return true; - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); ret = __xprt_get_cong(xprt, req) != 0; - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); return ret; } EXPORT_SYMBOL_GPL(xprt_request_get_cong); @@ -464,9 +464,9 @@ static void xprt_clear_congestion_window_wait(struct rpc_xprt *xprt) { if (test_and_clear_bit(XPRT_CWND_WAIT, &xprt->state)) { - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); __xprt_lock_write_next_cong(xprt); - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); } } @@ -563,9 +563,9 @@ bool xprt_write_space(struct rpc_xprt *xprt) if (!test_bit(XPRT_WRITE_SPACE, &xprt->state)) return false; - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); ret = xprt_clear_write_space_locked(xprt); - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); return ret; } EXPORT_SYMBOL_GPL(xprt_write_space); @@ -634,9 +634,9 @@ int xprt_adjust_timeout(struct rpc_rqst *req) req->rq_retries = 0; xprt_reset_majortimeo(req); /* Reset the RTT counters == "slow start" */ - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); rpc_init_rtt(req->rq_task->tk_client->cl_rtt, to->to_initval); - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); status = -ETIMEDOUT; } @@ -668,11 +668,11 @@ static void xprt_autoclose(struct work_struct *work) void xprt_disconnect_done(struct rpc_xprt *xprt) { dprintk("RPC: disconnected transport %p\n", xprt); - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); xprt_clear_connected(xprt); xprt_clear_write_space_locked(xprt); xprt_wake_pending_tasks(xprt, -ENOTCONN); - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); } EXPORT_SYMBOL_GPL(xprt_disconnect_done); @@ -684,7 +684,7 @@ EXPORT_SYMBOL_GPL(xprt_disconnect_done); void xprt_force_disconnect(struct rpc_xprt *xprt) { /* Don't race with the test_bit() in xprt_clear_locked() */ - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); set_bit(XPRT_CLOSE_WAIT, &xprt->state); /* Try to schedule an autoclose RPC call */ if (test_and_set_bit(XPRT_LOCKED, &xprt->state) == 0) @@ -692,7 +692,7 @@ void xprt_force_disconnect(struct rpc_xprt *xprt) else if (xprt->snd_task) rpc_wake_up_queued_task_set_status(&xprt->pending, xprt->snd_task, -ENOTCONN); - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); } EXPORT_SYMBOL_GPL(xprt_force_disconnect); @@ -726,7 +726,7 @@ xprt_request_retransmit_after_disconnect(struct rpc_task *task) void xprt_conditional_disconnect(struct rpc_xprt *xprt, unsigned int cookie) { /* Don't race with the test_bit() in xprt_clear_locked() */ - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); if (cookie != xprt->connect_cookie) goto out; if (test_bit(XPRT_CLOSING, &xprt->state)) @@ -737,7 +737,7 @@ void xprt_conditional_disconnect(struct rpc_xprt *xprt, unsigned int cookie) queue_work(xprtiod_workqueue, &xprt->task_cleanup); xprt_wake_pending_tasks(xprt, -EAGAIN); out: - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); } static bool @@ -750,6 +750,7 @@ static void xprt_schedule_autodisconnect(struct rpc_xprt *xprt) __must_hold(&xprt->transport_lock) { + xprt->last_used = jiffies; if (RB_EMPTY_ROOT(&xprt->recv_queue) && xprt_has_timer(xprt)) mod_timer(&xprt->timer, xprt->last_used + xprt->idle_timeout); } @@ -759,18 +760,13 @@ xprt_init_autodisconnect(struct timer_list *t) { struct rpc_xprt *xprt = from_timer(xprt, t, timer); - spin_lock(&xprt->transport_lock); if (!RB_EMPTY_ROOT(&xprt->recv_queue)) - goto out_abort; + return; /* Reset xprt->last_used to avoid connect/autodisconnect cycling */ xprt->last_used = jiffies; if (test_and_set_bit(XPRT_LOCKED, &xprt->state)) - goto out_abort; - spin_unlock(&xprt->transport_lock); + return; queue_work(xprtiod_workqueue, &xprt->task_cleanup); - return; -out_abort: - spin_unlock(&xprt->transport_lock); } bool xprt_lock_connect(struct rpc_xprt *xprt, @@ -779,7 +775,7 @@ bool xprt_lock_connect(struct rpc_xprt *xprt, { bool ret = false; - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); if (!test_bit(XPRT_LOCKED, &xprt->state)) goto out; if (xprt->snd_task != task) @@ -787,13 +783,13 @@ bool xprt_lock_connect(struct rpc_xprt *xprt, xprt->snd_task = cookie; ret = true; out: - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); return ret; } void xprt_unlock_connect(struct rpc_xprt *xprt, void *cookie) { - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); if (xprt->snd_task != cookie) goto out; if (!test_bit(XPRT_LOCKED, &xprt->state)) @@ -802,7 +798,7 @@ void xprt_unlock_connect(struct rpc_xprt *xprt, void *cookie) xprt->ops->release_xprt(xprt, NULL); xprt_schedule_autodisconnect(xprt); out: - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); wake_up_bit(&xprt->state, XPRT_LOCKED); } @@ -850,6 +846,38 @@ void xprt_connect(struct rpc_task *task) xprt_release_write(xprt, task); } +/** + * xprt_reconnect_delay - compute the wait before scheduling a connect + * @xprt: transport instance + * + */ +unsigned long xprt_reconnect_delay(const struct rpc_xprt *xprt) +{ + unsigned long start, now = jiffies; + + start = xprt->stat.connect_start + xprt->reestablish_timeout; + if (time_after(start, now)) + return start - now; + return 0; +} +EXPORT_SYMBOL_GPL(xprt_reconnect_delay); + +/** + * xprt_reconnect_backoff - compute the new re-establish timeout + * @xprt: transport instance + * @init_to: initial reestablish timeout + * + */ +void xprt_reconnect_backoff(struct rpc_xprt *xprt, unsigned long init_to) +{ + xprt->reestablish_timeout <<= 1; + if (xprt->reestablish_timeout > xprt->max_reconnect_timeout) + xprt->reestablish_timeout = xprt->max_reconnect_timeout; + if (xprt->reestablish_timeout < init_to) + xprt->reestablish_timeout = init_to; +} +EXPORT_SYMBOL_GPL(xprt_reconnect_backoff); + enum xprt_xid_rb_cmp { XID_RB_EQUAL, XID_RB_LEFT, @@ -1013,6 +1041,8 @@ xprt_request_enqueue_receive(struct rpc_task *task) if (!xprt_request_need_enqueue_receive(task, req)) return; + + xprt_request_prepare(task->tk_rqstp); spin_lock(&xprt->queue_lock); /* Update the softirq receive buffer */ @@ -1412,14 +1442,14 @@ xprt_request_transmit(struct rpc_rqst *req, struct rpc_task *snd_task) xprt_inject_disconnect(xprt); task->tk_flags |= RPC_TASK_SENT; - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); xprt->stat.sends++; xprt->stat.req_u += xprt->stat.sends - xprt->stat.recvs; xprt->stat.bklog_u += xprt->backlog.qlen; xprt->stat.sending_u += xprt->sending.qlen; xprt->stat.pending_u += xprt->pending.qlen; - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); req->rq_connect_cookie = connect_cookie; out_dequeue: @@ -1765,18 +1795,13 @@ void xprt_release(struct rpc_task *task) } xprt = req->rq_xprt; - if (task->tk_ops->rpc_count_stats != NULL) - task->tk_ops->rpc_count_stats(task, task->tk_calldata); - else if (task->tk_client) - rpc_count_iostats(task, task->tk_client->cl_metrics); xprt_request_dequeue_all(task, req); - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); xprt->ops->release_xprt(xprt, task); if (xprt->ops->release_request) xprt->ops->release_request(task); - xprt->last_used = jiffies; xprt_schedule_autodisconnect(xprt); - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); if (req->rq_buffer) xprt->ops->buf_free(task); xprt_inject_disconnect(xprt); diff --git a/net/sunrpc/xprtmultipath.c b/net/sunrpc/xprtmultipath.c index 8394124126f8..78c075a68c04 100644 --- a/net/sunrpc/xprtmultipath.c +++ b/net/sunrpc/xprtmultipath.c @@ -19,7 +19,7 @@ #include <linux/sunrpc/addr.h> #include <linux/sunrpc/xprtmultipath.h> -typedef struct rpc_xprt *(*xprt_switch_find_xprt_t)(struct list_head *head, +typedef struct rpc_xprt *(*xprt_switch_find_xprt_t)(struct rpc_xprt_switch *xps, const struct rpc_xprt *cur); static const struct rpc_xprt_iter_ops rpc_xprt_iter_singular; @@ -36,6 +36,7 @@ static void xprt_switch_add_xprt_locked(struct rpc_xprt_switch *xps, if (xps->xps_nxprts == 0) xps->xps_net = xprt->xprt_net; xps->xps_nxprts++; + xps->xps_nactive++; } /** @@ -51,8 +52,7 @@ void rpc_xprt_switch_add_xprt(struct rpc_xprt_switch *xps, if (xprt == NULL) return; spin_lock(&xps->xps_lock); - if ((xps->xps_net == xprt->xprt_net || xps->xps_net == NULL) && - !rpc_xprt_switch_has_addr(xps, (struct sockaddr *)&xprt->addr)) + if (xps->xps_net == xprt->xprt_net || xps->xps_net == NULL) xprt_switch_add_xprt_locked(xps, xprt); spin_unlock(&xps->xps_lock); } @@ -62,6 +62,7 @@ static void xprt_switch_remove_xprt_locked(struct rpc_xprt_switch *xps, { if (unlikely(xprt == NULL)) return; + xps->xps_nactive--; xps->xps_nxprts--; if (xps->xps_nxprts == 0) xps->xps_net = NULL; @@ -102,7 +103,9 @@ struct rpc_xprt_switch *xprt_switch_alloc(struct rpc_xprt *xprt, if (xps != NULL) { spin_lock_init(&xps->xps_lock); kref_init(&xps->xps_kref); - xps->xps_nxprts = 0; + xps->xps_nxprts = xps->xps_nactive = 0; + atomic_long_set(&xps->xps_queuelen, 0); + xps->xps_net = NULL; INIT_LIST_HEAD(&xps->xps_xprt_list); xps->xps_iter_ops = &rpc_xprt_iter_singular; xprt_switch_add_xprt_locked(xps, xprt); @@ -193,9 +196,21 @@ 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; +} + +static struct rpc_xprt *xprt_switch_find_first_entry(struct list_head *head) { - return list_first_or_null_rcu(head, struct rpc_xprt, xprt_switch); + struct rpc_xprt *pos; + + list_for_each_entry_rcu(pos, head, xprt_switch) { + if (xprt_is_active(pos)) + return pos; + } + return NULL; } static @@ -213,9 +228,12 @@ struct rpc_xprt *xprt_switch_find_current_entry(struct list_head *head, const struct rpc_xprt *cur) { struct rpc_xprt *pos; + bool found = false; list_for_each_entry_rcu(pos, head, xprt_switch) { if (cur == pos) + found = true; + if (found && xprt_is_active(pos)) return pos; } return NULL; @@ -260,9 +278,12 @@ struct rpc_xprt *xprt_switch_find_next_entry(struct list_head *head, const struct rpc_xprt *cur) { struct rpc_xprt *pos, *prev = NULL; + bool found = false; list_for_each_entry_rcu(pos, head, xprt_switch) { if (cur == prev) + found = true; + if (found && xprt_is_active(pos)) return pos; prev = pos; } @@ -270,22 +291,15 @@ struct rpc_xprt *xprt_switch_find_next_entry(struct list_head *head, } static -struct rpc_xprt *xprt_switch_set_next_cursor(struct list_head *head, +struct rpc_xprt *xprt_switch_set_next_cursor(struct rpc_xprt_switch *xps, struct rpc_xprt **cursor, xprt_switch_find_xprt_t find_next) { - struct rpc_xprt *cur, *pos, *old; + struct rpc_xprt *pos, *old; - cur = READ_ONCE(*cursor); - for (;;) { - old = cur; - pos = find_next(head, old); - if (pos == NULL) - break; - cur = cmpxchg_relaxed(cursor, old, pos); - if (cur == old) - break; - } + old = smp_load_acquire(cursor); + pos = find_next(xps, old); + smp_store_release(cursor, pos); return pos; } @@ -297,13 +311,11 @@ struct rpc_xprt *xprt_iter_next_entry_multiple(struct rpc_xprt_iter *xpi, if (xps == NULL) return NULL; - return xprt_switch_set_next_cursor(&xps->xps_xprt_list, - &xpi->xpi_cursor, - find_next); + return xprt_switch_set_next_cursor(xps, &xpi->xpi_cursor, find_next); } static -struct rpc_xprt *xprt_switch_find_next_entry_roundrobin(struct list_head *head, +struct rpc_xprt *__xprt_switch_find_next_entry_roundrobin(struct list_head *head, const struct rpc_xprt *cur) { struct rpc_xprt *ret; @@ -315,6 +327,31 @@ struct rpc_xprt *xprt_switch_find_next_entry_roundrobin(struct list_head *head, } static +struct rpc_xprt *xprt_switch_find_next_entry_roundrobin(struct rpc_xprt_switch *xps, + const struct rpc_xprt *cur) +{ + struct list_head *head = &xps->xps_xprt_list; + struct rpc_xprt *xprt; + unsigned int nactive; + + for (;;) { + unsigned long xprt_queuelen, xps_queuelen; + + xprt = __xprt_switch_find_next_entry_roundrobin(head, cur); + if (!xprt) + break; + xprt_queuelen = atomic_long_read(&xprt->queuelen); + xps_queuelen = atomic_long_read(&xps->xps_queuelen); + nactive = READ_ONCE(xps->xps_nactive); + /* Exit loop if xprt_queuelen <= average queue length */ + if (xprt_queuelen * nactive <= xps_queuelen) + break; + cur = xprt; + } + return xprt; +} + +static struct rpc_xprt *xprt_iter_next_entry_roundrobin(struct rpc_xprt_iter *xpi) { return xprt_iter_next_entry_multiple(xpi, @@ -322,9 +359,17 @@ struct rpc_xprt *xprt_iter_next_entry_roundrobin(struct rpc_xprt_iter *xpi) } static +struct rpc_xprt *xprt_switch_find_next_entry_all(struct rpc_xprt_switch *xps, + const struct rpc_xprt *cur) +{ + return xprt_switch_find_next_entry(&xps->xps_xprt_list, cur); +} + +static struct rpc_xprt *xprt_iter_next_entry_all(struct rpc_xprt_iter *xpi) { - return xprt_iter_next_entry_multiple(xpi, xprt_switch_find_next_entry); + return xprt_iter_next_entry_multiple(xpi, + xprt_switch_find_next_entry_all); } /* diff --git a/net/sunrpc/xprtrdma/backchannel.c b/net/sunrpc/xprtrdma/backchannel.c index ce986591f213..59e624b1d7a0 100644 --- a/net/sunrpc/xprtrdma/backchannel.c +++ b/net/sunrpc/xprtrdma/backchannel.c @@ -52,6 +52,13 @@ size_t xprt_rdma_bc_maxpayload(struct rpc_xprt *xprt) return maxmsg - RPCRDMA_HDRLEN_MIN; } +unsigned int xprt_rdma_bc_max_slots(struct rpc_xprt *xprt) +{ + struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt); + + return r_xprt->rx_buf.rb_bc_srv_max_requests; +} + static int rpcrdma_bc_marshal_reply(struct rpc_rqst *rqst) { struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(rqst->rq_xprt); diff --git a/net/sunrpc/xprtrdma/frwr_ops.c b/net/sunrpc/xprtrdma/frwr_ops.c index 794ba4ca0994..0b6dad7580a1 100644 --- a/net/sunrpc/xprtrdma/frwr_ops.c +++ b/net/sunrpc/xprtrdma/frwr_ops.c @@ -144,6 +144,26 @@ frwr_mr_recycle_worker(struct work_struct *work) frwr_release_mr(mr); } +/* frwr_reset - Place MRs back on the free list + * @req: request to reset + * + * Used after a failed marshal. For FRWR, this means the MRs + * don't have to be fully released and recreated. + * + * NB: This is safe only as long as none of @req's MRs are + * involved with an ongoing asynchronous FAST_REG or LOCAL_INV + * Work Request. + */ +void frwr_reset(struct rpcrdma_req *req) +{ + while (!list_empty(&req->rl_registered)) { + struct rpcrdma_mr *mr; + + mr = rpcrdma_mr_pop(&req->rl_registered); + rpcrdma_mr_unmap_and_put(mr); + } +} + /** * frwr_init_mr - Initialize one MR * @ia: interface adapter @@ -168,7 +188,6 @@ int frwr_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr) goto out_list_err; mr->frwr.fr_mr = frmr; - mr->frwr.fr_state = FRWR_IS_INVALID; mr->mr_dir = DMA_NONE; INIT_LIST_HEAD(&mr->mr_list); INIT_WORK(&mr->mr_recycle, frwr_mr_recycle_worker); @@ -298,65 +317,6 @@ size_t frwr_maxpages(struct rpcrdma_xprt *r_xprt) } /** - * frwr_wc_fastreg - Invoked by RDMA provider for a flushed FastReg WC - * @cq: completion queue (ignored) - * @wc: completed WR - * - */ -static void -frwr_wc_fastreg(struct ib_cq *cq, struct ib_wc *wc) -{ - struct ib_cqe *cqe = wc->wr_cqe; - struct rpcrdma_frwr *frwr = - container_of(cqe, struct rpcrdma_frwr, fr_cqe); - - /* WARNING: Only wr_cqe and status are reliable at this point */ - if (wc->status != IB_WC_SUCCESS) - frwr->fr_state = FRWR_FLUSHED_FR; - trace_xprtrdma_wc_fastreg(wc, frwr); -} - -/** - * frwr_wc_localinv - Invoked by RDMA provider for a flushed LocalInv WC - * @cq: completion queue (ignored) - * @wc: completed WR - * - */ -static void -frwr_wc_localinv(struct ib_cq *cq, struct ib_wc *wc) -{ - struct ib_cqe *cqe = wc->wr_cqe; - struct rpcrdma_frwr *frwr = container_of(cqe, struct rpcrdma_frwr, - fr_cqe); - - /* WARNING: Only wr_cqe and status are reliable at this point */ - if (wc->status != IB_WC_SUCCESS) - frwr->fr_state = FRWR_FLUSHED_LI; - trace_xprtrdma_wc_li(wc, frwr); -} - -/** - * frwr_wc_localinv_wake - Invoked by RDMA provider for a signaled LocalInv WC - * @cq: completion queue (ignored) - * @wc: completed WR - * - * Awaken anyone waiting for an MR to finish being fenced. - */ -static void -frwr_wc_localinv_wake(struct ib_cq *cq, struct ib_wc *wc) -{ - struct ib_cqe *cqe = wc->wr_cqe; - struct rpcrdma_frwr *frwr = container_of(cqe, struct rpcrdma_frwr, - fr_cqe); - - /* WARNING: Only wr_cqe and status are reliable at this point */ - if (wc->status != IB_WC_SUCCESS) - frwr->fr_state = FRWR_FLUSHED_LI; - trace_xprtrdma_wc_li_wake(wc, frwr); - complete(&frwr->fr_linv_done); -} - -/** * frwr_map - Register a memory region * @r_xprt: controlling transport * @seg: memory region co-ordinates @@ -378,23 +338,15 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt, { struct rpcrdma_ia *ia = &r_xprt->rx_ia; bool holes_ok = ia->ri_mrtype == IB_MR_TYPE_SG_GAPS; - struct rpcrdma_frwr *frwr; struct rpcrdma_mr *mr; struct ib_mr *ibmr; struct ib_reg_wr *reg_wr; int i, n; u8 key; - mr = NULL; - do { - if (mr) - rpcrdma_mr_recycle(mr); - mr = rpcrdma_mr_get(r_xprt); - if (!mr) - return ERR_PTR(-EAGAIN); - } while (mr->frwr.fr_state != FRWR_IS_INVALID); - frwr = &mr->frwr; - frwr->fr_state = FRWR_IS_VALID; + mr = rpcrdma_mr_get(r_xprt); + if (!mr) + goto out_getmr_err; if (nsegs > ia->ri_max_frwr_depth) nsegs = ia->ri_max_frwr_depth; @@ -423,7 +375,7 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt, if (!mr->mr_nents) goto out_dmamap_err; - ibmr = frwr->fr_mr; + ibmr = mr->frwr.fr_mr; n = ib_map_mr_sg(ibmr, mr->mr_sg, mr->mr_nents, NULL, PAGE_SIZE); if (unlikely(n != mr->mr_nents)) goto out_mapmr_err; @@ -433,7 +385,7 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt, key = (u8)(ibmr->rkey & 0x000000FF); ib_update_fast_reg_key(ibmr, ++key); - reg_wr = &frwr->fr_regwr; + reg_wr = &mr->frwr.fr_regwr; reg_wr->mr = ibmr; reg_wr->key = ibmr->rkey; reg_wr->access = writing ? @@ -448,6 +400,10 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt, *out = mr; return seg; +out_getmr_err: + xprt_wait_for_buffer_space(&r_xprt->rx_xprt); + return ERR_PTR(-EAGAIN); + out_dmamap_err: mr->mr_dir = DMA_NONE; trace_xprtrdma_frwr_sgerr(mr, i); @@ -461,6 +417,23 @@ out_mapmr_err: } /** + * frwr_wc_fastreg - Invoked by RDMA provider for a flushed FastReg WC + * @cq: completion queue (ignored) + * @wc: completed WR + * + */ +static void frwr_wc_fastreg(struct ib_cq *cq, struct ib_wc *wc) +{ + struct ib_cqe *cqe = wc->wr_cqe; + struct rpcrdma_frwr *frwr = + container_of(cqe, struct rpcrdma_frwr, fr_cqe); + + /* WARNING: Only wr_cqe and status are reliable at this point */ + trace_xprtrdma_wc_fastreg(wc, frwr); + /* The MR will get recycled when the associated req is retransmitted */ +} + +/** * frwr_send - post Send WR containing the RPC Call message * @ia: interface adapter * @req: Prepared RPC Call @@ -512,31 +485,75 @@ void frwr_reminv(struct rpcrdma_rep *rep, struct list_head *mrs) if (mr->mr_handle == rep->rr_inv_rkey) { list_del_init(&mr->mr_list); trace_xprtrdma_mr_remoteinv(mr); - mr->frwr.fr_state = FRWR_IS_INVALID; rpcrdma_mr_unmap_and_put(mr); break; /* only one invalidated MR per RPC */ } } +static void __frwr_release_mr(struct ib_wc *wc, struct rpcrdma_mr *mr) +{ + if (wc->status != IB_WC_SUCCESS) + rpcrdma_mr_recycle(mr); + else + rpcrdma_mr_unmap_and_put(mr); +} + /** - * frwr_unmap_sync - invalidate memory regions that were registered for @req - * @r_xprt: controlling transport - * @mrs: list of MRs to process + * frwr_wc_localinv - Invoked by RDMA provider for a LOCAL_INV WC + * @cq: completion queue (ignored) + * @wc: completed WR + * + */ +static void frwr_wc_localinv(struct ib_cq *cq, struct ib_wc *wc) +{ + struct ib_cqe *cqe = wc->wr_cqe; + struct rpcrdma_frwr *frwr = + container_of(cqe, struct rpcrdma_frwr, fr_cqe); + struct rpcrdma_mr *mr = container_of(frwr, struct rpcrdma_mr, frwr); + + /* WARNING: Only wr_cqe and status are reliable at this point */ + trace_xprtrdma_wc_li(wc, frwr); + __frwr_release_mr(wc, mr); +} + +/** + * frwr_wc_localinv_wake - Invoked by RDMA provider for a LOCAL_INV WC + * @cq: completion queue (ignored) + * @wc: completed WR * - * Sleeps until it is safe for the host CPU to access the - * previously mapped memory regions. + * Awaken anyone waiting for an MR to finish being fenced. + */ +static void frwr_wc_localinv_wake(struct ib_cq *cq, struct ib_wc *wc) +{ + struct ib_cqe *cqe = wc->wr_cqe; + struct rpcrdma_frwr *frwr = + container_of(cqe, struct rpcrdma_frwr, fr_cqe); + struct rpcrdma_mr *mr = container_of(frwr, struct rpcrdma_mr, frwr); + + /* WARNING: Only wr_cqe and status are reliable at this point */ + trace_xprtrdma_wc_li_wake(wc, frwr); + complete(&frwr->fr_linv_done); + __frwr_release_mr(wc, mr); +} + +/** + * frwr_unmap_sync - invalidate memory regions that were registered for @req + * @r_xprt: controlling transport instance + * @req: rpcrdma_req with a non-empty list of MRs to process * - * Caller ensures that @mrs is not empty before the call. This - * function empties the list. + * Sleeps until it is safe for the host CPU to access the previously mapped + * memory regions. This guarantees that registered MRs are properly fenced + * from the server before the RPC consumer accesses the data in them. It + * also ensures proper Send flow control: waking the next RPC waits until + * this RPC has relinquished all its Send Queue entries. */ -void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs) +void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req) { struct ib_send_wr *first, **prev, *last; const struct ib_send_wr *bad_wr; - struct rpcrdma_ia *ia = &r_xprt->rx_ia; struct rpcrdma_frwr *frwr; struct rpcrdma_mr *mr; - int count, rc; + int rc; /* ORDER: Invalidate all of the MRs first * @@ -544,33 +561,32 @@ void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs) * a single ib_post_send() call. */ frwr = NULL; - count = 0; prev = &first; - list_for_each_entry(mr, mrs, mr_list) { - mr->frwr.fr_state = FRWR_IS_INVALID; + while (!list_empty(&req->rl_registered)) { + mr = rpcrdma_mr_pop(&req->rl_registered); - frwr = &mr->frwr; trace_xprtrdma_mr_localinv(mr); + r_xprt->rx_stats.local_inv_needed++; + frwr = &mr->frwr; frwr->fr_cqe.done = frwr_wc_localinv; last = &frwr->fr_invwr; - memset(last, 0, sizeof(*last)); + last->next = NULL; last->wr_cqe = &frwr->fr_cqe; + last->sg_list = NULL; + last->num_sge = 0; last->opcode = IB_WR_LOCAL_INV; + last->send_flags = IB_SEND_SIGNALED; last->ex.invalidate_rkey = mr->mr_handle; - count++; *prev = last; prev = &last->next; } - if (!frwr) - goto unmap; /* Strong send queue ordering guarantees that when the * last WR in the chain completes, all WRs in the chain * are complete. */ - last->send_flags = IB_SEND_SIGNALED; frwr->fr_cqe.done = frwr_wc_localinv_wake; reinit_completion(&frwr->fr_linv_done); @@ -578,37 +594,126 @@ void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct list_head *mrs) * replaces the QP. The RPC reply handler won't call us * unless ri_id->qp is a valid pointer. */ - r_xprt->rx_stats.local_inv_needed++; bad_wr = NULL; - rc = ib_post_send(ia->ri_id->qp, first, &bad_wr); + rc = ib_post_send(r_xprt->rx_ia.ri_id->qp, first, &bad_wr); + trace_xprtrdma_post_send(req, rc); + + /* The final LOCAL_INV WR in the chain is supposed to + * do the wake. If it was never posted, the wake will + * not happen, so don't wait in that case. + */ if (bad_wr != first) wait_for_completion(&frwr->fr_linv_done); - if (rc) - goto out_release; + if (!rc) + return; - /* ORDER: Now DMA unmap all of the MRs, and return - * them to the free MR list. + /* Recycle MRs in the LOCAL_INV chain that did not get posted. */ -unmap: - while (!list_empty(mrs)) { - mr = rpcrdma_mr_pop(mrs); - rpcrdma_mr_unmap_and_put(mr); + while (bad_wr) { + frwr = container_of(bad_wr, struct rpcrdma_frwr, + fr_invwr); + mr = container_of(frwr, struct rpcrdma_mr, frwr); + bad_wr = bad_wr->next; + + list_del_init(&mr->mr_list); + rpcrdma_mr_recycle(mr); } - return; +} -out_release: - pr_err("rpcrdma: FRWR invalidate ib_post_send returned %i\n", rc); +/** + * frwr_wc_localinv_done - Invoked by RDMA provider for a signaled LOCAL_INV WC + * @cq: completion queue (ignored) + * @wc: completed WR + * + */ +static void frwr_wc_localinv_done(struct ib_cq *cq, struct ib_wc *wc) +{ + struct ib_cqe *cqe = wc->wr_cqe; + struct rpcrdma_frwr *frwr = + container_of(cqe, struct rpcrdma_frwr, fr_cqe); + struct rpcrdma_mr *mr = container_of(frwr, struct rpcrdma_mr, frwr); - /* Unmap and release the MRs in the LOCAL_INV WRs that did not - * get posted. + /* WARNING: Only wr_cqe and status are reliable at this point */ + trace_xprtrdma_wc_li_done(wc, frwr); + rpcrdma_complete_rqst(frwr->fr_req->rl_reply); + __frwr_release_mr(wc, mr); +} + +/** + * frwr_unmap_async - invalidate memory regions that were registered for @req + * @r_xprt: controlling transport instance + * @req: rpcrdma_req with a non-empty list of MRs to process + * + * This guarantees that registered MRs are properly fenced from the + * server before the RPC consumer accesses the data in them. It also + * ensures proper Send flow control: waking the next RPC waits until + * this RPC has relinquished all its Send Queue entries. + */ +void frwr_unmap_async(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req) +{ + struct ib_send_wr *first, *last, **prev; + const struct ib_send_wr *bad_wr; + struct rpcrdma_frwr *frwr; + struct rpcrdma_mr *mr; + int rc; + + /* Chain the LOCAL_INV Work Requests and post them with + * a single ib_post_send() call. + */ + frwr = NULL; + prev = &first; + while (!list_empty(&req->rl_registered)) { + mr = rpcrdma_mr_pop(&req->rl_registered); + + trace_xprtrdma_mr_localinv(mr); + r_xprt->rx_stats.local_inv_needed++; + + frwr = &mr->frwr; + frwr->fr_cqe.done = frwr_wc_localinv; + frwr->fr_req = req; + last = &frwr->fr_invwr; + last->next = NULL; + last->wr_cqe = &frwr->fr_cqe; + last->sg_list = NULL; + last->num_sge = 0; + last->opcode = IB_WR_LOCAL_INV; + last->send_flags = IB_SEND_SIGNALED; + last->ex.invalidate_rkey = mr->mr_handle; + + *prev = last; + prev = &last->next; + } + + /* Strong send queue ordering guarantees that when the + * last WR in the chain completes, all WRs in the chain + * are complete. The last completion will wake up the + * RPC waiter. + */ + frwr->fr_cqe.done = frwr_wc_localinv_done; + + /* Transport disconnect drains the receive CQ before it + * replaces the QP. The RPC reply handler won't call us + * unless ri_id->qp is a valid pointer. + */ + bad_wr = NULL; + rc = ib_post_send(r_xprt->rx_ia.ri_id->qp, first, &bad_wr); + trace_xprtrdma_post_send(req, rc); + if (!rc) + return; + + /* Recycle MRs in the LOCAL_INV chain that did not get posted. */ while (bad_wr) { - frwr = container_of(bad_wr, struct rpcrdma_frwr, - fr_invwr); + frwr = container_of(bad_wr, struct rpcrdma_frwr, fr_invwr); mr = container_of(frwr, struct rpcrdma_mr, frwr); bad_wr = bad_wr->next; - list_del_init(&mr->mr_list); rpcrdma_mr_recycle(mr); } + + /* The final LOCAL_INV WR in the chain is supposed to + * do the wake. If it was never posted, the wake will + * not happen, so wake here in that case. + */ + rpcrdma_complete_rqst(req->rl_reply); } diff --git a/net/sunrpc/xprtrdma/rpc_rdma.c b/net/sunrpc/xprtrdma/rpc_rdma.c index 85115a2e2639..4345e6912392 100644 --- a/net/sunrpc/xprtrdma/rpc_rdma.c +++ b/net/sunrpc/xprtrdma/rpc_rdma.c @@ -366,6 +366,9 @@ rpcrdma_encode_read_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, unsigned int pos; int nsegs; + if (rtype == rpcrdma_noch) + goto done; + pos = rqst->rq_snd_buf.head[0].iov_len; if (rtype == rpcrdma_areadch) pos = 0; @@ -389,7 +392,8 @@ rpcrdma_encode_read_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, nsegs -= mr->mr_nents; } while (nsegs); - return 0; +done: + return encode_item_not_present(xdr); } /* Register and XDR encode the Write list. Supports encoding a list @@ -417,6 +421,9 @@ rpcrdma_encode_write_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, int nsegs, nchunks; __be32 *segcount; + if (wtype != rpcrdma_writech) + goto done; + seg = req->rl_segments; nsegs = rpcrdma_convert_iovs(r_xprt, &rqst->rq_rcv_buf, rqst->rq_rcv_buf.head[0].iov_len, @@ -451,7 +458,8 @@ rpcrdma_encode_write_list(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, /* Update count of segments in this Write chunk */ *segcount = cpu_to_be32(nchunks); - return 0; +done: + return encode_item_not_present(xdr); } /* Register and XDR encode the Reply chunk. Supports encoding an array @@ -476,6 +484,9 @@ rpcrdma_encode_reply_chunk(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, int nsegs, nchunks; __be32 *segcount; + if (wtype != rpcrdma_replych) + return encode_item_not_present(xdr); + seg = req->rl_segments; nsegs = rpcrdma_convert_iovs(r_xprt, &rqst->rq_rcv_buf, 0, wtype, seg); if (nsegs < 0) @@ -511,6 +522,16 @@ rpcrdma_encode_reply_chunk(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, return 0; } +static void rpcrdma_sendctx_done(struct kref *kref) +{ + struct rpcrdma_req *req = + container_of(kref, struct rpcrdma_req, rl_kref); + struct rpcrdma_rep *rep = req->rl_reply; + + rpcrdma_complete_rqst(rep); + rep->rr_rxprt->rx_stats.reply_waits_for_send++; +} + /** * rpcrdma_sendctx_unmap - DMA-unmap Send buffer * @sc: sendctx containing SGEs to unmap @@ -520,6 +541,9 @@ void rpcrdma_sendctx_unmap(struct rpcrdma_sendctx *sc) { struct ib_sge *sge; + if (!sc->sc_unmap_count) + return; + /* The first two SGEs contain the transport header and * the inline buffer. These are always left mapped so * they can be cheaply re-used. @@ -529,9 +553,7 @@ void rpcrdma_sendctx_unmap(struct rpcrdma_sendctx *sc) ib_dma_unmap_page(sc->sc_device, sge->addr, sge->length, DMA_TO_DEVICE); - if (test_and_clear_bit(RPCRDMA_REQ_F_TX_RESOURCES, - &sc->sc_req->rl_flags)) - wake_up_bit(&sc->sc_req->rl_flags, RPCRDMA_REQ_F_TX_RESOURCES); + kref_put(&sc->sc_req->rl_kref, rpcrdma_sendctx_done); } /* Prepare an SGE for the RPC-over-RDMA transport header. @@ -666,7 +688,7 @@ map_tail: out: sc->sc_wr.num_sge += sge_no; if (sc->sc_unmap_count) - __set_bit(RPCRDMA_REQ_F_TX_RESOURCES, &req->rl_flags); + kref_get(&req->rl_kref); return true; out_regbuf: @@ -699,22 +721,28 @@ rpcrdma_prepare_send_sges(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req, u32 hdrlen, struct xdr_buf *xdr, enum rpcrdma_chunktype rtype) { + int ret; + + ret = -EAGAIN; req->rl_sendctx = rpcrdma_sendctx_get_locked(r_xprt); if (!req->rl_sendctx) - return -EAGAIN; + goto err; req->rl_sendctx->sc_wr.num_sge = 0; req->rl_sendctx->sc_unmap_count = 0; req->rl_sendctx->sc_req = req; - __clear_bit(RPCRDMA_REQ_F_TX_RESOURCES, &req->rl_flags); + kref_init(&req->rl_kref); + ret = -EIO; if (!rpcrdma_prepare_hdr_sge(r_xprt, req, hdrlen)) - return -EIO; - + goto err; if (rtype != rpcrdma_areadch) if (!rpcrdma_prepare_msg_sges(r_xprt, req, xdr, rtype)) - return -EIO; - + goto err; return 0; + +err: + trace_xprtrdma_prepsend_failed(&req->rl_slot, ret); + return ret; } /** @@ -842,50 +870,28 @@ rpcrdma_marshal_req(struct rpcrdma_xprt *r_xprt, struct rpc_rqst *rqst) * send a Call message with a Position Zero Read chunk and a * regular Read chunk at the same time. */ - if (rtype != rpcrdma_noch) { - ret = rpcrdma_encode_read_list(r_xprt, req, rqst, rtype); - if (ret) - goto out_err; - } - ret = encode_item_not_present(xdr); + ret = rpcrdma_encode_read_list(r_xprt, req, rqst, rtype); if (ret) goto out_err; - - if (wtype == rpcrdma_writech) { - ret = rpcrdma_encode_write_list(r_xprt, req, rqst, wtype); - if (ret) - goto out_err; - } - ret = encode_item_not_present(xdr); + ret = rpcrdma_encode_write_list(r_xprt, req, rqst, wtype); if (ret) goto out_err; - - if (wtype != rpcrdma_replych) - ret = encode_item_not_present(xdr); - else - ret = rpcrdma_encode_reply_chunk(r_xprt, req, rqst, wtype); + ret = rpcrdma_encode_reply_chunk(r_xprt, req, rqst, wtype); if (ret) goto out_err; - trace_xprtrdma_marshal(rqst, xdr_stream_pos(xdr), rtype, wtype); - - ret = rpcrdma_prepare_send_sges(r_xprt, req, xdr_stream_pos(xdr), + ret = rpcrdma_prepare_send_sges(r_xprt, req, req->rl_hdrbuf.len, &rqst->rq_snd_buf, rtype); if (ret) goto out_err; + + trace_xprtrdma_marshal(req, rtype, wtype); return 0; out_err: trace_xprtrdma_marshal_failed(rqst, ret); - switch (ret) { - case -EAGAIN: - xprt_wait_for_buffer_space(rqst->rq_xprt); - break; - case -ENOBUFS: - break; - default: - r_xprt->rx_stats.failed_marshal_count++; - } + r_xprt->rx_stats.failed_marshal_count++; + frwr_reset(req); return ret; } @@ -1269,51 +1275,17 @@ out_badheader: goto out; } -void rpcrdma_release_rqst(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req) -{ - /* Invalidate and unmap the data payloads before waking - * the waiting application. This guarantees the memory - * regions are properly fenced from the server before the - * application accesses the data. It also ensures proper - * send flow control: waking the next RPC waits until this - * RPC has relinquished all its Send Queue entries. - */ - if (!list_empty(&req->rl_registered)) - frwr_unmap_sync(r_xprt, &req->rl_registered); - - /* Ensure that any DMA mapped pages associated with - * the Send of the RPC Call have been unmapped before - * allowing the RPC to complete. This protects argument - * memory not controlled by the RPC client from being - * re-used before we're done with it. - */ - if (test_bit(RPCRDMA_REQ_F_TX_RESOURCES, &req->rl_flags)) { - r_xprt->rx_stats.reply_waits_for_send++; - out_of_line_wait_on_bit(&req->rl_flags, - RPCRDMA_REQ_F_TX_RESOURCES, - bit_wait, - TASK_UNINTERRUPTIBLE); - } -} - -/* Reply handling runs in the poll worker thread. Anything that - * might wait is deferred to a separate workqueue. - */ -void rpcrdma_deferred_completion(struct work_struct *work) +static void rpcrdma_reply_done(struct kref *kref) { - struct rpcrdma_rep *rep = - container_of(work, struct rpcrdma_rep, rr_work); - struct rpcrdma_req *req = rpcr_to_rdmar(rep->rr_rqst); - struct rpcrdma_xprt *r_xprt = rep->rr_rxprt; + struct rpcrdma_req *req = + container_of(kref, struct rpcrdma_req, rl_kref); - trace_xprtrdma_defer_cmp(rep); - if (rep->rr_wc_flags & IB_WC_WITH_INVALIDATE) - frwr_reminv(rep, &req->rl_registered); - rpcrdma_release_rqst(r_xprt, req); - rpcrdma_complete_rqst(rep); + rpcrdma_complete_rqst(req->rl_reply); } -/* Process received RPC/RDMA messages. +/** + * rpcrdma_reply_handler - Process received RPC/RDMA messages + * @rep: Incoming rpcrdma_rep object to process * * Errors must result in the RPC task either being awakened, or * allowed to timeout, to discover the errors at that time. @@ -1360,10 +1332,10 @@ void rpcrdma_reply_handler(struct rpcrdma_rep *rep) else if (credits > buf->rb_max_requests) credits = buf->rb_max_requests; if (buf->rb_credits != credits) { - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); buf->rb_credits = credits; xprt->cwnd = credits << RPC_CWNDSHIFT; - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); } req = rpcr_to_rdmar(rqst); @@ -1373,10 +1345,16 @@ void rpcrdma_reply_handler(struct rpcrdma_rep *rep) } req->rl_reply = rep; rep->rr_rqst = rqst; - clear_bit(RPCRDMA_REQ_F_PENDING, &req->rl_flags); trace_xprtrdma_reply(rqst->rq_task, rep, req, credits); - queue_work(buf->rb_completion_wq, &rep->rr_work); + + if (rep->rr_wc_flags & IB_WC_WITH_INVALIDATE) + frwr_reminv(rep, &req->rl_registered); + if (!list_empty(&req->rl_registered)) + frwr_unmap_async(r_xprt, req); + /* LocalInv completion will complete the RPC */ + else + kref_put(&req->rl_kref, rpcrdma_reply_done); return; out_badversion: diff --git a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c index bed57d8b5c19..d1fcc41d5eb5 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_backchannel.c +++ b/net/sunrpc/xprtrdma/svc_rdma_backchannel.c @@ -72,9 +72,9 @@ int svc_rdma_handle_bc_reply(struct rpc_xprt *xprt, __be32 *rdma_resp, else if (credits > r_xprt->rx_buf.rb_bc_max_requests) credits = r_xprt->rx_buf.rb_bc_max_requests; - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); xprt->cwnd = credits << RPC_CWNDSHIFT; - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); spin_lock(&xprt->queue_lock); ret = 0; diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c index 0004535c0188..3fe665152d95 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_transport.c +++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c @@ -226,9 +226,9 @@ static void handle_connect_req(struct rdma_cm_id *new_cma_id, * Enqueue the new transport on the accept queue of the listening * transport */ - spin_lock_bh(&listen_xprt->sc_lock); + spin_lock(&listen_xprt->sc_lock); list_add_tail(&newxprt->sc_accept_q, &listen_xprt->sc_accept_q); - spin_unlock_bh(&listen_xprt->sc_lock); + spin_unlock(&listen_xprt->sc_lock); set_bit(XPT_CONN, &listen_xprt->sc_xprt.xpt_flags); svc_xprt_enqueue(&listen_xprt->sc_xprt); @@ -401,7 +401,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) listen_rdma = container_of(xprt, struct svcxprt_rdma, sc_xprt); clear_bit(XPT_CONN, &xprt->xpt_flags); /* Get the next entry off the accept list */ - spin_lock_bh(&listen_rdma->sc_lock); + spin_lock(&listen_rdma->sc_lock); if (!list_empty(&listen_rdma->sc_accept_q)) { newxprt = list_entry(listen_rdma->sc_accept_q.next, struct svcxprt_rdma, sc_accept_q); @@ -409,7 +409,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt) } if (!list_empty(&listen_rdma->sc_accept_q)) set_bit(XPT_CONN, &listen_rdma->sc_xprt.xpt_flags); - spin_unlock_bh(&listen_rdma->sc_lock); + spin_unlock(&listen_rdma->sc_lock); if (!newxprt) return NULL; diff --git a/net/sunrpc/xprtrdma/transport.c b/net/sunrpc/xprtrdma/transport.c index 1f73a6a7e43c..52abddac19e5 100644 --- a/net/sunrpc/xprtrdma/transport.c +++ b/net/sunrpc/xprtrdma/transport.c @@ -298,6 +298,7 @@ xprt_rdma_destroy(struct rpc_xprt *xprt) module_put(THIS_MODULE); } +/* 60 second timeout, no retries */ static const struct rpc_timeout xprt_rdma_default_timeout = { .to_initval = 60 * HZ, .to_maxval = 60 * HZ, @@ -323,8 +324,9 @@ xprt_setup_rdma(struct xprt_create *args) if (!xprt) return ERR_PTR(-ENOMEM); - /* 60 second timeout, no retries */ xprt->timeout = &xprt_rdma_default_timeout; + xprt->connect_timeout = xprt->timeout->to_initval; + xprt->max_reconnect_timeout = xprt->timeout->to_maxval; xprt->bind_timeout = RPCRDMA_BIND_TO; xprt->reestablish_timeout = RPCRDMA_INIT_REEST_TO; xprt->idle_timeout = RPCRDMA_IDLE_DISC_TO; @@ -487,31 +489,64 @@ xprt_rdma_timer(struct rpc_xprt *xprt, struct rpc_task *task) } /** - * xprt_rdma_connect - try to establish a transport connection + * xprt_rdma_set_connect_timeout - set timeouts for establishing a connection + * @xprt: controlling transport instance + * @connect_timeout: reconnect timeout after client disconnects + * @reconnect_timeout: reconnect timeout after server disconnects + * + */ +static void xprt_rdma_tcp_set_connect_timeout(struct rpc_xprt *xprt, + unsigned long connect_timeout, + unsigned long reconnect_timeout) +{ + struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt); + + trace_xprtrdma_op_set_cto(r_xprt, connect_timeout, reconnect_timeout); + + spin_lock(&xprt->transport_lock); + + if (connect_timeout < xprt->connect_timeout) { + struct rpc_timeout to; + unsigned long initval; + + to = *xprt->timeout; + initval = connect_timeout; + if (initval < RPCRDMA_INIT_REEST_TO << 1) + initval = RPCRDMA_INIT_REEST_TO << 1; + to.to_initval = initval; + to.to_maxval = initval; + r_xprt->rx_timeout = to; + xprt->timeout = &r_xprt->rx_timeout; + xprt->connect_timeout = connect_timeout; + } + + if (reconnect_timeout < xprt->max_reconnect_timeout) + xprt->max_reconnect_timeout = reconnect_timeout; + + spin_unlock(&xprt->transport_lock); +} + +/** + * xprt_rdma_connect - schedule an attempt to reconnect * @xprt: transport state - * @task: RPC scheduler context + * @task: RPC scheduler context (unused) * */ static void xprt_rdma_connect(struct rpc_xprt *xprt, struct rpc_task *task) { struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt); + unsigned long delay; trace_xprtrdma_op_connect(r_xprt); + + delay = 0; if (r_xprt->rx_ep.rep_connected != 0) { - /* Reconnect */ - schedule_delayed_work(&r_xprt->rx_connect_worker, - xprt->reestablish_timeout); - xprt->reestablish_timeout <<= 1; - if (xprt->reestablish_timeout > RPCRDMA_MAX_REEST_TO) - xprt->reestablish_timeout = RPCRDMA_MAX_REEST_TO; - else if (xprt->reestablish_timeout < RPCRDMA_INIT_REEST_TO) - xprt->reestablish_timeout = RPCRDMA_INIT_REEST_TO; - } else { - schedule_delayed_work(&r_xprt->rx_connect_worker, 0); - if (!RPC_IS_ASYNC(task)) - flush_delayed_work(&r_xprt->rx_connect_worker); + delay = xprt_reconnect_delay(xprt); + xprt_reconnect_backoff(xprt, RPCRDMA_INIT_REEST_TO); } + queue_delayed_work(xprtiod_workqueue, &r_xprt->rx_connect_worker, + delay); } /** @@ -550,8 +585,11 @@ out_sleep: static void xprt_rdma_free_slot(struct rpc_xprt *xprt, struct rpc_rqst *rqst) { + struct rpcrdma_xprt *r_xprt = + container_of(xprt, struct rpcrdma_xprt, rx_xprt); + memset(rqst, 0, sizeof(*rqst)); - rpcrdma_buffer_put(rpcr_to_rdmar(rqst)); + rpcrdma_buffer_put(&r_xprt->rx_buf, rpcr_to_rdmar(rqst)); rpc_wake_up_next(&xprt->backlog); } @@ -618,9 +656,16 @@ xprt_rdma_free(struct rpc_task *task) struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(rqst->rq_xprt); struct rpcrdma_req *req = rpcr_to_rdmar(rqst); - if (test_bit(RPCRDMA_REQ_F_PENDING, &req->rl_flags)) - rpcrdma_release_rqst(r_xprt, req); trace_xprtrdma_op_free(task, req); + + if (!list_empty(&req->rl_registered)) + frwr_unmap_sync(r_xprt, req); + + /* XXX: If the RPC is completing because of a signal and + * not because a reply was received, we ought to ensure + * that the Send completion has fired, so that memory + * involved with the Send is not still visible to the NIC. + */ } /** @@ -667,7 +712,6 @@ xprt_rdma_send_request(struct rpc_rqst *rqst) goto drop_connection; rqst->rq_xtime = ktime_get(); - __set_bit(RPCRDMA_REQ_F_PENDING, &req->rl_flags); if (rpcrdma_ep_post(&r_xprt->rx_ia, &r_xprt->rx_ep, req)) goto drop_connection; @@ -760,6 +804,7 @@ static const struct rpc_xprt_ops xprt_rdma_procs = { .send_request = xprt_rdma_send_request, .close = xprt_rdma_close, .destroy = xprt_rdma_destroy, + .set_connect_timeout = xprt_rdma_tcp_set_connect_timeout, .print_stats = xprt_rdma_print_stats, .enable_swap = xprt_rdma_enable_swap, .disable_swap = xprt_rdma_disable_swap, @@ -767,6 +812,7 @@ static const struct rpc_xprt_ops xprt_rdma_procs = { #if defined(CONFIG_SUNRPC_BACKCHANNEL) .bc_setup = xprt_rdma_bc_setup, .bc_maxpayload = xprt_rdma_bc_maxpayload, + .bc_num_slots = xprt_rdma_bc_max_slots, .bc_free_rqst = xprt_rdma_bc_free_rqst, .bc_destroy = xprt_rdma_bc_destroy, #endif diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index 84bb37924540..805b1f35e1ca 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -89,14 +89,12 @@ static void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp); */ static void rpcrdma_xprt_drain(struct rpcrdma_xprt *r_xprt) { - struct rpcrdma_buffer *buf = &r_xprt->rx_buf; struct rpcrdma_ia *ia = &r_xprt->rx_ia; /* Flush Receives, then wait for deferred Reply work * to complete. */ ib_drain_rq(ia->ri_id->qp); - drain_workqueue(buf->rb_completion_wq); /* Deferred Reply processing might have scheduled * local invalidations. @@ -901,7 +899,7 @@ out_emptyq: * completions recently. This is a sign the Send Queue is * backing up. Cause the caller to pause and try again. */ - set_bit(RPCRDMA_BUF_F_EMPTY_SCQ, &buf->rb_flags); + xprt_wait_for_buffer_space(&r_xprt->rx_xprt); r_xprt->rx_stats.empty_sendctx_q++; return NULL; } @@ -936,10 +934,7 @@ rpcrdma_sendctx_put_locked(struct rpcrdma_sendctx *sc) /* Paired with READ_ONCE */ smp_store_release(&buf->rb_sc_tail, next_tail); - if (test_and_clear_bit(RPCRDMA_BUF_F_EMPTY_SCQ, &buf->rb_flags)) { - smp_mb__after_atomic(); - xprt_write_space(&sc->sc_xprt->rx_xprt); - } + xprt_write_space(&sc->sc_xprt->rx_xprt); } static void @@ -977,8 +972,6 @@ rpcrdma_mrs_create(struct rpcrdma_xprt *r_xprt) r_xprt->rx_stats.mrs_allocated += count; spin_unlock(&buf->rb_mrlock); trace_xprtrdma_createmrs(r_xprt, count); - - xprt_write_space(&r_xprt->rx_xprt); } static void @@ -990,6 +983,7 @@ rpcrdma_mr_refresh_worker(struct work_struct *work) rx_buf); rpcrdma_mrs_create(r_xprt); + xprt_write_space(&r_xprt->rx_xprt); } /** @@ -1025,7 +1019,6 @@ struct rpcrdma_req *rpcrdma_req_create(struct rpcrdma_xprt *r_xprt, size_t size, if (!req->rl_recvbuf) goto out4; - req->rl_buffer = buffer; INIT_LIST_HEAD(&req->rl_registered); spin_lock(&buffer->rb_lock); list_add(&req->rl_all, &buffer->rb_allreqs); @@ -1042,9 +1035,9 @@ out1: return NULL; } -static bool rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt, bool temp) +static struct rpcrdma_rep *rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt, + bool temp) { - struct rpcrdma_buffer *buf = &r_xprt->rx_buf; struct rpcrdma_rep *rep; rep = kzalloc(sizeof(*rep), GFP_KERNEL); @@ -1055,27 +1048,22 @@ static bool rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt, bool temp) DMA_FROM_DEVICE, GFP_KERNEL); if (!rep->rr_rdmabuf) goto out_free; + xdr_buf_init(&rep->rr_hdrbuf, rdmab_data(rep->rr_rdmabuf), rdmab_length(rep->rr_rdmabuf)); - rep->rr_cqe.done = rpcrdma_wc_receive; rep->rr_rxprt = r_xprt; - INIT_WORK(&rep->rr_work, rpcrdma_deferred_completion); rep->rr_recv_wr.next = NULL; rep->rr_recv_wr.wr_cqe = &rep->rr_cqe; rep->rr_recv_wr.sg_list = &rep->rr_rdmabuf->rg_iov; rep->rr_recv_wr.num_sge = 1; rep->rr_temp = temp; - - spin_lock(&buf->rb_lock); - list_add(&rep->rr_list, &buf->rb_recv_bufs); - spin_unlock(&buf->rb_lock); - return true; + return rep; out_free: kfree(rep); out: - return false; + return NULL; } /** @@ -1089,7 +1077,6 @@ int rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt) struct rpcrdma_buffer *buf = &r_xprt->rx_buf; int i, rc; - buf->rb_flags = 0; buf->rb_max_requests = r_xprt->rx_ep.rep_max_requests; buf->rb_bc_srv_max_requests = 0; spin_lock_init(&buf->rb_mrlock); @@ -1122,15 +1109,6 @@ int rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt) if (rc) goto out; - buf->rb_completion_wq = alloc_workqueue("rpcrdma-%s", - WQ_MEM_RECLAIM | WQ_HIGHPRI, - 0, - r_xprt->rx_xprt.address_strings[RPC_DISPLAY_ADDR]); - if (!buf->rb_completion_wq) { - rc = -ENOMEM; - goto out; - } - return 0; out: rpcrdma_buffer_destroy(buf); @@ -1204,11 +1182,6 @@ rpcrdma_buffer_destroy(struct rpcrdma_buffer *buf) { cancel_delayed_work_sync(&buf->rb_refresh_worker); - if (buf->rb_completion_wq) { - destroy_workqueue(buf->rb_completion_wq); - buf->rb_completion_wq = NULL; - } - rpcrdma_sendctxs_destroy(buf); while (!list_empty(&buf->rb_recv_bufs)) { @@ -1325,13 +1298,12 @@ rpcrdma_buffer_get(struct rpcrdma_buffer *buffers) /** * rpcrdma_buffer_put - Put request/reply buffers back into pool + * @buffers: buffer pool * @req: object to return * */ -void -rpcrdma_buffer_put(struct rpcrdma_req *req) +void rpcrdma_buffer_put(struct rpcrdma_buffer *buffers, struct rpcrdma_req *req) { - struct rpcrdma_buffer *buffers = req->rl_buffer; struct rpcrdma_rep *rep = req->rl_reply; req->rl_reply = NULL; @@ -1484,8 +1456,7 @@ rpcrdma_ep_post(struct rpcrdma_ia *ia, struct ib_send_wr *send_wr = &req->rl_sendctx->sc_wr; int rc; - if (!ep->rep_send_count || - test_bit(RPCRDMA_REQ_F_TX_RESOURCES, &req->rl_flags)) { + if (!ep->rep_send_count || kref_read(&req->rl_kref) > 1) { send_wr->send_flags |= IB_SEND_SIGNALED; ep->rep_send_count = ep->rep_send_batch; } else { @@ -1505,11 +1476,13 @@ rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp) { struct rpcrdma_buffer *buf = &r_xprt->rx_buf; struct rpcrdma_ep *ep = &r_xprt->rx_ep; - struct ib_recv_wr *wr, *bad_wr; + struct ib_recv_wr *i, *wr, *bad_wr; + struct rpcrdma_rep *rep; int needed, count, rc; rc = 0; count = 0; + needed = buf->rb_credits + (buf->rb_bc_srv_max_requests << 1); if (ep->rep_receive_count > needed) goto out; @@ -1517,51 +1490,65 @@ rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp) if (!temp) needed += RPCRDMA_MAX_RECV_BATCH; - count = 0; + /* fast path: all needed reps can be found on the free list */ wr = NULL; + spin_lock(&buf->rb_lock); while (needed) { - struct rpcrdma_regbuf *rb; - struct rpcrdma_rep *rep; - - spin_lock(&buf->rb_lock); rep = list_first_entry_or_null(&buf->rb_recv_bufs, struct rpcrdma_rep, rr_list); - if (likely(rep)) - list_del(&rep->rr_list); - spin_unlock(&buf->rb_lock); - if (!rep) { - if (!rpcrdma_rep_create(r_xprt, temp)) - break; - continue; - } + if (!rep) + break; - rb = rep->rr_rdmabuf; - if (!rpcrdma_regbuf_dma_map(r_xprt, rb)) { - rpcrdma_recv_buffer_put(rep); + list_del(&rep->rr_list); + rep->rr_recv_wr.next = wr; + wr = &rep->rr_recv_wr; + --needed; + } + spin_unlock(&buf->rb_lock); + + while (needed) { + rep = rpcrdma_rep_create(r_xprt, temp); + if (!rep) break; - } - trace_xprtrdma_post_recv(rep->rr_recv_wr.wr_cqe); rep->rr_recv_wr.next = wr; wr = &rep->rr_recv_wr; - ++count; --needed; } - if (!count) + if (!wr) goto out; + for (i = wr; i; i = i->next) { + rep = container_of(i, struct rpcrdma_rep, rr_recv_wr); + + if (!rpcrdma_regbuf_dma_map(r_xprt, rep->rr_rdmabuf)) + goto release_wrs; + + trace_xprtrdma_post_recv(rep->rr_recv_wr.wr_cqe); + ++count; + } + rc = ib_post_recv(r_xprt->rx_ia.ri_id->qp, wr, (const struct ib_recv_wr **)&bad_wr); +out: + trace_xprtrdma_post_recvs(r_xprt, count, rc); if (rc) { - for (wr = bad_wr; wr; wr = wr->next) { + for (wr = bad_wr; wr;) { struct rpcrdma_rep *rep; rep = container_of(wr, struct rpcrdma_rep, rr_recv_wr); + wr = wr->next; rpcrdma_recv_buffer_put(rep); --count; } } ep->rep_receive_count += count; -out: - trace_xprtrdma_post_recvs(r_xprt, count, rc); + return; + +release_wrs: + for (i = wr; i;) { + rep = container_of(i, struct rpcrdma_rep, rr_recv_wr); + i = i->next; + rpcrdma_recv_buffer_put(rep); + } } diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h index d1e0749bcbc4..92ce09fcea74 100644 --- a/net/sunrpc/xprtrdma/xprt_rdma.h +++ b/net/sunrpc/xprtrdma/xprt_rdma.h @@ -44,7 +44,8 @@ #include <linux/wait.h> /* wait_queue_head_t, etc */ #include <linux/spinlock.h> /* spinlock_t, etc */ -#include <linux/atomic.h> /* atomic_t, etc */ +#include <linux/atomic.h> /* atomic_t, etc */ +#include <linux/kref.h> /* struct kref */ #include <linux/workqueue.h> /* struct work_struct */ #include <rdma/rdma_cm.h> /* RDMA connection api */ @@ -202,10 +203,9 @@ struct rpcrdma_rep { bool rr_temp; struct rpcrdma_regbuf *rr_rdmabuf; struct rpcrdma_xprt *rr_rxprt; - struct work_struct rr_work; + struct rpc_rqst *rr_rqst; struct xdr_buf rr_hdrbuf; struct xdr_stream rr_stream; - struct rpc_rqst *rr_rqst; struct list_head rr_list; struct ib_recv_wr rr_recv_wr; }; @@ -240,18 +240,12 @@ struct rpcrdma_sendctx { * An external memory region is any buffer or page that is registered * on the fly (ie, not pre-registered). */ -enum rpcrdma_frwr_state { - FRWR_IS_INVALID, /* ready to be used */ - FRWR_IS_VALID, /* in use */ - FRWR_FLUSHED_FR, /* flushed FASTREG WR */ - FRWR_FLUSHED_LI, /* flushed LOCALINV WR */ -}; - +struct rpcrdma_req; struct rpcrdma_frwr { struct ib_mr *fr_mr; struct ib_cqe fr_cqe; - enum rpcrdma_frwr_state fr_state; struct completion fr_linv_done; + struct rpcrdma_req *fr_req; union { struct ib_reg_wr fr_regwr; struct ib_send_wr fr_invwr; @@ -326,7 +320,6 @@ struct rpcrdma_buffer; struct rpcrdma_req { struct list_head rl_list; struct rpc_rqst rl_slot; - struct rpcrdma_buffer *rl_buffer; struct rpcrdma_rep *rl_reply; struct xdr_stream rl_stream; struct xdr_buf rl_hdrbuf; @@ -336,18 +329,12 @@ struct rpcrdma_req { struct rpcrdma_regbuf *rl_recvbuf; /* rq_rcv_buf */ struct list_head rl_all; - unsigned long rl_flags; + struct kref rl_kref; struct list_head rl_registered; /* registered segments */ struct rpcrdma_mr_seg rl_segments[RPCRDMA_MAX_SEGS]; }; -/* rl_flags */ -enum { - RPCRDMA_REQ_F_PENDING = 0, - RPCRDMA_REQ_F_TX_RESOURCES, -}; - static inline struct rpcrdma_req * rpcr_to_rdmar(const struct rpc_rqst *rqst) { @@ -391,22 +378,15 @@ struct rpcrdma_buffer { struct list_head rb_recv_bufs; struct list_head rb_allreqs; - unsigned long rb_flags; u32 rb_max_requests; u32 rb_credits; /* most recent credit grant */ u32 rb_bc_srv_max_requests; u32 rb_bc_max_requests; - struct workqueue_struct *rb_completion_wq; struct delayed_work rb_refresh_worker; }; -/* rb_flags */ -enum { - RPCRDMA_BUF_F_EMPTY_SCQ = 0, -}; - /* * Statistics for RPCRDMA */ @@ -452,6 +432,7 @@ struct rpcrdma_xprt { struct rpcrdma_ep rx_ep; struct rpcrdma_buffer rx_buf; struct delayed_work rx_connect_worker; + struct rpc_timeout rx_timeout; struct rpcrdma_stats rx_stats; }; @@ -518,7 +499,8 @@ rpcrdma_mr_recycle(struct rpcrdma_mr *mr) } struct rpcrdma_req *rpcrdma_buffer_get(struct rpcrdma_buffer *); -void rpcrdma_buffer_put(struct rpcrdma_req *); +void rpcrdma_buffer_put(struct rpcrdma_buffer *buffers, + struct rpcrdma_req *req); void rpcrdma_recv_buffer_put(struct rpcrdma_rep *); bool rpcrdma_regbuf_realloc(struct rpcrdma_regbuf *rb, size_t size, @@ -564,6 +546,7 @@ rpcrdma_data_dir(bool writing) /* Memory registration calls xprtrdma/frwr_ops.c */ bool frwr_is_supported(struct ib_device *device); +void frwr_reset(struct rpcrdma_req *req); int frwr_open(struct rpcrdma_ia *ia, struct rpcrdma_ep *ep); int frwr_init_mr(struct rpcrdma_ia *ia, struct rpcrdma_mr *mr); void frwr_release_mr(struct rpcrdma_mr *mr); @@ -574,8 +557,8 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr **mr); int frwr_send(struct rpcrdma_ia *ia, struct rpcrdma_req *req); void frwr_reminv(struct rpcrdma_rep *rep, struct list_head *mrs); -void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, - struct list_head *mrs); +void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req); +void frwr_unmap_async(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req); /* * RPC/RDMA protocol calls - xprtrdma/rpc_rdma.c @@ -598,9 +581,6 @@ int rpcrdma_marshal_req(struct rpcrdma_xprt *r_xprt, struct rpc_rqst *rqst); void rpcrdma_set_max_header_sizes(struct rpcrdma_xprt *); void rpcrdma_complete_rqst(struct rpcrdma_rep *rep); void rpcrdma_reply_handler(struct rpcrdma_rep *rep); -void rpcrdma_release_rqst(struct rpcrdma_xprt *r_xprt, - struct rpcrdma_req *req); -void rpcrdma_deferred_completion(struct work_struct *work); static inline void rpcrdma_set_xdrlen(struct xdr_buf *xdr, size_t len) { @@ -625,6 +605,7 @@ void xprt_rdma_cleanup(void); #if defined(CONFIG_SUNRPC_BACKCHANNEL) int xprt_rdma_bc_setup(struct rpc_xprt *, unsigned int); size_t xprt_rdma_bc_maxpayload(struct rpc_xprt *); +unsigned int xprt_rdma_bc_max_slots(struct rpc_xprt *); int rpcrdma_bc_post_recv(struct rpcrdma_xprt *, unsigned int); void rpcrdma_bc_receive_call(struct rpcrdma_xprt *, struct rpcrdma_rep *); int xprt_rdma_bc_send_reply(struct rpc_rqst *rqst); diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index 36652352a38c..e2176c167a57 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -880,7 +880,7 @@ static int xs_nospace(struct rpc_rqst *req) req->rq_slen); /* Protect against races with write_space */ - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); /* Don't race with disconnect */ if (xprt_connected(xprt)) { @@ -890,7 +890,7 @@ static int xs_nospace(struct rpc_rqst *req) } else ret = -ENOTCONN; - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); /* Race breaker in case memory is freed before above code is called */ if (ret == -EAGAIN) { @@ -909,6 +909,7 @@ static int xs_nospace(struct rpc_rqst *req) static void xs_stream_prepare_request(struct rpc_rqst *req) { + xdr_free_bvec(&req->rq_rcv_buf); req->rq_task->tk_status = xdr_alloc_bvec(&req->rq_rcv_buf, GFP_KERNEL); } @@ -1211,6 +1212,15 @@ static void xs_sock_reset_state_flags(struct rpc_xprt *xprt) struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt); clear_bit(XPRT_SOCK_DATA_READY, &transport->sock_state); + clear_bit(XPRT_SOCK_WAKE_ERROR, &transport->sock_state); + clear_bit(XPRT_SOCK_WAKE_WRITE, &transport->sock_state); + clear_bit(XPRT_SOCK_WAKE_DISCONNECT, &transport->sock_state); +} + +static void xs_run_error_worker(struct sock_xprt *transport, unsigned int nr) +{ + set_bit(nr, &transport->sock_state); + queue_work(xprtiod_workqueue, &transport->error_worker); } static void xs_sock_reset_connection_flags(struct rpc_xprt *xprt) @@ -1231,6 +1241,7 @@ static void xs_sock_reset_connection_flags(struct rpc_xprt *xprt) */ static void xs_error_report(struct sock *sk) { + struct sock_xprt *transport; struct rpc_xprt *xprt; int err; @@ -1238,13 +1249,14 @@ static void xs_error_report(struct sock *sk) if (!(xprt = xprt_from_sock(sk))) goto out; + transport = container_of(xprt, struct sock_xprt, xprt); err = -sk->sk_err; if (err == 0) goto out; dprintk("RPC: xs_error_report client %p, error=%d...\n", xprt, -err); trace_rpc_socket_error(xprt, sk->sk_socket, err); - xprt_wake_pending_tasks(xprt, err); + xs_run_error_worker(transport, XPRT_SOCK_WAKE_ERROR); out: read_unlock_bh(&sk->sk_callback_lock); } @@ -1333,6 +1345,7 @@ static void xs_destroy(struct rpc_xprt *xprt) cancel_delayed_work_sync(&transport->connect_worker); xs_close(xprt); cancel_work_sync(&transport->recv_worker); + cancel_work_sync(&transport->error_worker); xs_xprt_free(xprt); module_put(THIS_MODULE); } @@ -1386,9 +1399,9 @@ static void xs_udp_data_read_skb(struct rpc_xprt *xprt, } - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); xprt_adjust_cwnd(xprt, task, copied); - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); spin_lock(&xprt->queue_lock); xprt_complete_rqst(task, copied); __UDPX_INC_STATS(sk, UDP_MIB_INDATAGRAMS); @@ -1498,7 +1511,6 @@ static void xs_tcp_state_change(struct sock *sk) trace_rpc_socket_state_change(xprt, sk->sk_socket); switch (sk->sk_state) { case TCP_ESTABLISHED: - spin_lock(&xprt->transport_lock); if (!xprt_test_and_set_connected(xprt)) { xprt->connect_cookie++; clear_bit(XPRT_SOCK_CONNECTING, &transport->sock_state); @@ -1507,9 +1519,8 @@ static void xs_tcp_state_change(struct sock *sk) xprt->stat.connect_count++; xprt->stat.connect_time += (long)jiffies - xprt->stat.connect_start; - xprt_wake_pending_tasks(xprt, -EAGAIN); + xs_run_error_worker(transport, XPRT_SOCK_WAKE_PENDING); } - spin_unlock(&xprt->transport_lock); break; case TCP_FIN_WAIT1: /* The client initiated a shutdown of the socket */ @@ -1525,7 +1536,7 @@ static void xs_tcp_state_change(struct sock *sk) /* The server initiated a shutdown of the socket */ xprt->connect_cookie++; clear_bit(XPRT_CONNECTED, &xprt->state); - xs_tcp_force_close(xprt); + xs_run_error_worker(transport, XPRT_SOCK_WAKE_DISCONNECT); /* fall through */ case TCP_CLOSING: /* @@ -1547,7 +1558,7 @@ static void xs_tcp_state_change(struct sock *sk) xprt_clear_connecting(xprt); clear_bit(XPRT_CLOSING, &xprt->state); /* Trigger the socket release */ - xs_tcp_force_close(xprt); + xs_run_error_worker(transport, XPRT_SOCK_WAKE_DISCONNECT); } out: read_unlock_bh(&sk->sk_callback_lock); @@ -1556,6 +1567,7 @@ static void xs_tcp_state_change(struct sock *sk) static void xs_write_space(struct sock *sk) { struct socket_wq *wq; + struct sock_xprt *transport; struct rpc_xprt *xprt; if (!sk->sk_socket) @@ -1564,13 +1576,14 @@ static void xs_write_space(struct sock *sk) if (unlikely(!(xprt = xprt_from_sock(sk)))) return; + transport = container_of(xprt, struct sock_xprt, xprt); rcu_read_lock(); wq = rcu_dereference(sk->sk_wq); if (!wq || test_and_clear_bit(SOCKWQ_ASYNC_NOSPACE, &wq->flags) == 0) goto out; - if (xprt_write_space(xprt)) - sk->sk_write_pending--; + xs_run_error_worker(transport, XPRT_SOCK_WAKE_WRITE); + sk->sk_write_pending--; out: rcu_read_unlock(); } @@ -1664,9 +1677,9 @@ static void xs_udp_set_buffer_size(struct rpc_xprt *xprt, size_t sndsize, size_t */ static void xs_udp_timer(struct rpc_xprt *xprt, struct rpc_task *task) { - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); xprt_adjust_cwnd(xprt, task, -ETIMEDOUT); - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); } static int xs_get_random_port(void) @@ -2201,13 +2214,13 @@ static void xs_tcp_set_socket_timeouts(struct rpc_xprt *xprt, unsigned int opt_on = 1; unsigned int timeo; - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); keepidle = DIV_ROUND_UP(xprt->timeout->to_initval, HZ); keepcnt = xprt->timeout->to_retries + 1; timeo = jiffies_to_msecs(xprt->timeout->to_initval) * (xprt->timeout->to_retries + 1); clear_bit(XPRT_SOCK_UPD_TIMEOUT, &transport->sock_state); - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); /* TCP Keepalive options */ kernel_setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, @@ -2232,7 +2245,7 @@ static void xs_tcp_set_connect_timeout(struct rpc_xprt *xprt, struct rpc_timeout to; unsigned long initval; - spin_lock_bh(&xprt->transport_lock); + spin_lock(&xprt->transport_lock); if (reconnect_timeout < xprt->max_reconnect_timeout) xprt->max_reconnect_timeout = reconnect_timeout; if (connect_timeout < xprt->connect_timeout) { @@ -2249,7 +2262,7 @@ static void xs_tcp_set_connect_timeout(struct rpc_xprt *xprt, xprt->connect_timeout = connect_timeout; } set_bit(XPRT_SOCK_UPD_TIMEOUT, &transport->sock_state); - spin_unlock_bh(&xprt->transport_lock); + spin_unlock(&xprt->transport_lock); } static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock) @@ -2402,25 +2415,6 @@ out: xprt_wake_pending_tasks(xprt, status); } -static unsigned long xs_reconnect_delay(const struct rpc_xprt *xprt) -{ - unsigned long start, now = jiffies; - - start = xprt->stat.connect_start + xprt->reestablish_timeout; - if (time_after(start, now)) - return start - now; - return 0; -} - -static void xs_reconnect_backoff(struct rpc_xprt *xprt) -{ - xprt->reestablish_timeout <<= 1; - if (xprt->reestablish_timeout > xprt->max_reconnect_timeout) - xprt->reestablish_timeout = xprt->max_reconnect_timeout; - if (xprt->reestablish_timeout < XS_TCP_INIT_REEST_TO) - xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO; -} - /** * xs_connect - connect a socket to a remote endpoint * @xprt: pointer to transport structure @@ -2450,8 +2444,8 @@ static void xs_connect(struct rpc_xprt *xprt, struct rpc_task *task) /* Start by resetting any existing state */ xs_reset_transport(transport); - delay = xs_reconnect_delay(xprt); - xs_reconnect_backoff(xprt); + delay = xprt_reconnect_delay(xprt); + xprt_reconnect_backoff(xprt, XS_TCP_INIT_REEST_TO); } else dprintk("RPC: xs_connect scheduled xprt %p\n", xprt); @@ -2461,6 +2455,56 @@ static void xs_connect(struct rpc_xprt *xprt, struct rpc_task *task) delay); } +static void xs_wake_disconnect(struct sock_xprt *transport) +{ + if (test_and_clear_bit(XPRT_SOCK_WAKE_DISCONNECT, &transport->sock_state)) + xs_tcp_force_close(&transport->xprt); +} + +static void xs_wake_write(struct sock_xprt *transport) +{ + if (test_and_clear_bit(XPRT_SOCK_WAKE_WRITE, &transport->sock_state)) + xprt_write_space(&transport->xprt); +} + +static void xs_wake_error(struct sock_xprt *transport) +{ + int sockerr; + int sockerr_len = sizeof(sockerr); + + if (!test_bit(XPRT_SOCK_WAKE_ERROR, &transport->sock_state)) + return; + mutex_lock(&transport->recv_mutex); + if (transport->sock == NULL) + goto out; + if (!test_and_clear_bit(XPRT_SOCK_WAKE_ERROR, &transport->sock_state)) + goto out; + if (kernel_getsockopt(transport->sock, SOL_SOCKET, SO_ERROR, + (char *)&sockerr, &sockerr_len) != 0) + goto out; + if (sockerr < 0) + xprt_wake_pending_tasks(&transport->xprt, sockerr); +out: + mutex_unlock(&transport->recv_mutex); +} + +static void xs_wake_pending(struct sock_xprt *transport) +{ + if (test_and_clear_bit(XPRT_SOCK_WAKE_PENDING, &transport->sock_state)) + xprt_wake_pending_tasks(&transport->xprt, -EAGAIN); +} + +static void xs_error_handle(struct work_struct *work) +{ + struct sock_xprt *transport = container_of(work, + struct sock_xprt, error_worker); + + xs_wake_disconnect(transport); + xs_wake_write(transport); + xs_wake_error(transport); + xs_wake_pending(transport); +} + /** * xs_local_print_stats - display AF_LOCAL socket-specifc stats * @xprt: rpc_xprt struct containing statistics @@ -2745,6 +2789,7 @@ static const struct rpc_xprt_ops xs_tcp_ops = { #ifdef CONFIG_SUNRPC_BACKCHANNEL .bc_setup = xprt_setup_bc, .bc_maxpayload = xs_tcp_bc_maxpayload, + .bc_num_slots = xprt_bc_max_slots, .bc_free_rqst = xprt_free_bc_rqst, .bc_destroy = xprt_destroy_bc, #endif @@ -2873,6 +2918,7 @@ static struct rpc_xprt *xs_setup_local(struct xprt_create *args) xprt->timeout = &xs_local_default_timeout; INIT_WORK(&transport->recv_worker, xs_stream_data_receive_workfn); + INIT_WORK(&transport->error_worker, xs_error_handle); INIT_DELAYED_WORK(&transport->connect_worker, xs_dummy_setup_socket); switch (sun->sun_family) { @@ -2943,6 +2989,7 @@ static struct rpc_xprt *xs_setup_udp(struct xprt_create *args) xprt->timeout = &xs_udp_default_timeout; INIT_WORK(&transport->recv_worker, xs_udp_data_receive_workfn); + INIT_WORK(&transport->error_worker, xs_error_handle); INIT_DELAYED_WORK(&transport->connect_worker, xs_udp_setup_socket); switch (addr->sa_family) { @@ -3024,6 +3071,7 @@ static struct rpc_xprt *xs_setup_tcp(struct xprt_create *args) (xprt->timeout->to_retries + 1); INIT_WORK(&transport->recv_worker, xs_stream_data_receive_workfn); + INIT_WORK(&transport->error_worker, xs_error_handle); INIT_DELAYED_WORK(&transport->connect_worker, xs_tcp_setup_socket); switch (addr->sa_family) { |