diff options
Diffstat (limited to 'fs')
52 files changed, 1904 insertions, 1494 deletions
diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index 47189476b553..5d6edafbed20 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -149,8 +149,8 @@ do_add_page_to_bio(struct bio *bio, int npg, enum req_op op, sector_t isect, /* limit length to what the device mapping allows */ end = disk_addr + *len; - if (end >= map->start + map->len) - *len = map->start + map->len - disk_addr; + if (end >= map->disk_offset + map->len) + *len = map->disk_offset + map->len - disk_addr; retry: if (!bio) { diff --git a/fs/nfs/blocklayout/dev.c b/fs/nfs/blocklayout/dev.c index cab8809f0e0f..44306ac22353 100644 --- a/fs/nfs/blocklayout/dev.c +++ b/fs/nfs/blocklayout/dev.c @@ -257,10 +257,11 @@ static bool bl_map_stripe(struct pnfs_block_dev *dev, u64 offset, struct pnfs_block_dev *child; u64 chunk; u32 chunk_idx; + u64 disk_chunk; u64 disk_offset; chunk = div_u64(offset, dev->chunk_size); - div_u64_rem(chunk, dev->nr_children, &chunk_idx); + disk_chunk = div_u64_rem(chunk, dev->nr_children, &chunk_idx); if (chunk_idx >= dev->nr_children) { dprintk("%s: invalid chunk idx %d (%lld/%lld)\n", @@ -273,7 +274,7 @@ static bool bl_map_stripe(struct pnfs_block_dev *dev, u64 offset, offset = chunk * dev->chunk_size; /* disk offset of the stripe */ - disk_offset = div_u64(offset, dev->nr_children); + disk_offset = disk_chunk * dev->chunk_size; child = &dev->children[chunk_idx]; child->map(child, disk_offset, map); diff --git a/fs/nfs/blocklayout/extent_tree.c b/fs/nfs/blocklayout/extent_tree.c index 8f7cff7a4293..315949a7e92d 100644 --- a/fs/nfs/blocklayout/extent_tree.c +++ b/fs/nfs/blocklayout/extent_tree.c @@ -6,6 +6,7 @@ #include <linux/vmalloc.h> #include "blocklayout.h" +#include "../nfs4trace.h" #define NFSDBG_FACILITY NFSDBG_PNFS_LD @@ -520,10 +521,71 @@ static __be32 *encode_scsi_range(struct pnfs_block_extent *be, __be32 *p) return xdr_encode_hyper(p, be->be_length << SECTOR_SHIFT); } -static int ext_tree_encode_commit(struct pnfs_block_layout *bl, __be32 *p, +/** + * ext_tree_try_encode_commit - try to encode all extents into the buffer + * @bl: pointer to the layout + * @p: pointer to the output buffer + * @buffer_size: size of the output buffer + * @count: output pointer to the number of encoded extents + * @lastbyte: output pointer to the last written byte + * + * Return values: + * %0: Success, all required extents encoded, outputs are valid + * %-ENOSPC: Buffer too small, nothing encoded, outputs are invalid + */ +static int +ext_tree_try_encode_commit(struct pnfs_block_layout *bl, __be32 *p, size_t buffer_size, size_t *count, __u64 *lastbyte) { struct pnfs_block_extent *be; + + spin_lock(&bl->bl_ext_lock); + for (be = ext_tree_first(&bl->bl_ext_rw); be; be = ext_tree_next(be)) { + if (be->be_state != PNFS_BLOCK_INVALID_DATA || + be->be_tag != EXTENT_WRITTEN) + continue; + + (*count)++; + if (ext_tree_layoutupdate_size(bl, *count) > buffer_size) { + spin_unlock(&bl->bl_ext_lock); + return -ENOSPC; + } + } + for (be = ext_tree_first(&bl->bl_ext_rw); be; be = ext_tree_next(be)) { + if (be->be_state != PNFS_BLOCK_INVALID_DATA || + be->be_tag != EXTENT_WRITTEN) + continue; + + if (bl->bl_scsi_layout) + p = encode_scsi_range(be, p); + else + p = encode_block_extent(be, p); + be->be_tag = EXTENT_COMMITTING; + } + *lastbyte = (bl->bl_lwb != 0) ? bl->bl_lwb - 1 : U64_MAX; + bl->bl_lwb = 0; + spin_unlock(&bl->bl_ext_lock); + + return 0; +} + +/** + * ext_tree_encode_commit - encode as much as possible extents into the buffer + * @bl: pointer to the layout + * @p: pointer to the output buffer + * @buffer_size: size of the output buffer + * @count: output pointer to the number of encoded extents + * @lastbyte: output pointer to the last written byte + * + * Return values: + * %0: Success, all required extents encoded, outputs are valid + * %-ENOSPC: Buffer too small, some extents are encoded, outputs are valid + */ +static int +ext_tree_encode_commit(struct pnfs_block_layout *bl, __be32 *p, + size_t buffer_size, size_t *count, __u64 *lastbyte) +{ + struct pnfs_block_extent *be, *be_prev; int ret = 0; spin_lock(&bl->bl_ext_lock); @@ -534,9 +596,9 @@ static int ext_tree_encode_commit(struct pnfs_block_layout *bl, __be32 *p, (*count)++; if (ext_tree_layoutupdate_size(bl, *count) > buffer_size) { - /* keep counting.. */ + (*count)--; ret = -ENOSPC; - continue; + break; } if (bl->bl_scsi_layout) @@ -544,14 +606,30 @@ static int ext_tree_encode_commit(struct pnfs_block_layout *bl, __be32 *p, else p = encode_block_extent(be, p); be->be_tag = EXTENT_COMMITTING; + be_prev = be; + } + if (!ret) { + *lastbyte = (bl->bl_lwb != 0) ? bl->bl_lwb - 1 : U64_MAX; + bl->bl_lwb = 0; + } else { + *lastbyte = be_prev->be_f_offset + be_prev->be_length; + *lastbyte <<= SECTOR_SHIFT; + *lastbyte -= 1; } - *lastbyte = bl->bl_lwb - 1; - bl->bl_lwb = 0; spin_unlock(&bl->bl_ext_lock); return ret; } +/** + * ext_tree_prepare_commit - encode extents that need to be committed + * @arg: layout commit data + * + * Return values: + * %0: Success, all required extents are encoded + * %-ENOSPC: Some extents are encoded, but not all, due to RPC size limit + * %-ENOMEM: Out of memory, extents not encoded + */ int ext_tree_prepare_commit(struct nfs4_layoutcommit_args *arg) { @@ -560,20 +638,18 @@ ext_tree_prepare_commit(struct nfs4_layoutcommit_args *arg) __be32 *start_p; int ret; - dprintk("%s enter\n", __func__); - arg->layoutupdate_page = alloc_page(GFP_NOFS); if (!arg->layoutupdate_page) return -ENOMEM; start_p = page_address(arg->layoutupdate_page); arg->layoutupdate_pages = &arg->layoutupdate_page; -retry: - ret = ext_tree_encode_commit(bl, start_p + 1, buffer_size, &count, &arg->lastbytewritten); + ret = ext_tree_try_encode_commit(bl, start_p + 1, buffer_size, + &count, &arg->lastbytewritten); if (unlikely(ret)) { ext_tree_free_commitdata(arg, buffer_size); - buffer_size = ext_tree_layoutupdate_size(bl, count); + buffer_size = NFS_SERVER(arg->inode)->wsize; count = 0; arg->layoutupdate_pages = @@ -588,7 +664,8 @@ retry: return -ENOMEM; } - goto retry; + ret = ext_tree_encode_commit(bl, start_p + 1, buffer_size, + &count, &arg->lastbytewritten); } *start_p = cpu_to_be32(count); @@ -607,8 +684,9 @@ retry: } } - dprintk("%s found %zu ranges\n", __func__, count); - return 0; + trace_bl_ext_tree_prepare_commit(ret, count, + arg->lastbytewritten, !!ret); + return ret; } void diff --git a/fs/nfs/client.c b/fs/nfs/client.c index cf35ad3f818a..8fb4a950dd55 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -682,6 +682,44 @@ struct nfs_client *nfs_init_client(struct nfs_client *clp, } EXPORT_SYMBOL_GPL(nfs_init_client); +static void nfs4_server_set_init_caps(struct nfs_server *server) +{ +#if IS_ENABLED(CONFIG_NFS_V4) + /* Set the basic capabilities */ + server->caps = server->nfs_client->cl_mvops->init_caps; + if (server->flags & NFS_MOUNT_NORDIRPLUS) + server->caps &= ~NFS_CAP_READDIRPLUS; + if (server->nfs_client->cl_proto == XPRT_TRANSPORT_RDMA) + server->caps &= ~NFS_CAP_READ_PLUS; + + /* + * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower + * authentication. + */ + if (nfs4_disable_idmapping && + server->client->cl_auth->au_flavor == RPC_AUTH_UNIX) + server->caps |= NFS_CAP_UIDGID_NOMAP; +#endif +} + +void nfs_server_set_init_caps(struct nfs_server *server) +{ + switch (server->nfs_client->rpc_ops->version) { + case 2: + server->caps = NFS_CAP_HARDLINKS | NFS_CAP_SYMLINKS; + break; + case 3: + server->caps = NFS_CAP_HARDLINKS | NFS_CAP_SYMLINKS; + if (!(server->flags & NFS_MOUNT_NORDIRPLUS)) + server->caps |= NFS_CAP_READDIRPLUS; + break; + default: + nfs4_server_set_init_caps(server); + break; + } +} +EXPORT_SYMBOL_GPL(nfs_server_set_init_caps); + /* * Create a version 2 or 3 client */ @@ -726,7 +764,6 @@ static int nfs_init_server(struct nfs_server *server, /* Initialise the client representation from the mount data */ server->flags = ctx->flags; server->options = ctx->options; - server->caps |= NFS_CAP_HARDLINKS | NFS_CAP_SYMLINKS; switch (clp->rpc_ops->version) { case 2: @@ -762,6 +799,8 @@ static int nfs_init_server(struct nfs_server *server, if (error < 0) goto error; + nfs_server_set_init_caps(server); + /* Preserve the values of mount_server-related mount options */ if (ctx->mount_server.addrlen) { memcpy(&server->mountd_address, &ctx->mount_server.address, @@ -814,7 +853,6 @@ static void nfs_server_set_fsinfo(struct nfs_server *server, server->wsize = max_rpc_payload; if (server->wsize > NFS_MAX_FILE_IO_SIZE) server->wsize = NFS_MAX_FILE_IO_SIZE; - server->wpages = (server->wsize + PAGE_SIZE - 1) >> PAGE_SHIFT; server->wtmult = nfs_block_bits(fsinfo->wtmult, NULL); @@ -831,7 +869,6 @@ static void nfs_server_set_fsinfo(struct nfs_server *server, server->maxfilesize = fsinfo->maxfilesize; - server->time_delta = fsinfo->time_delta; server->change_attr_type = fsinfo->change_attr_type; server->clone_blksize = fsinfo->clone_blksize; @@ -936,7 +973,6 @@ void nfs_server_copy_userdata(struct nfs_server *target, struct nfs_server *sour target->acregmax = source->acregmax; target->acdirmin = source->acdirmin; target->acdirmax = source->acdirmax; - target->caps = source->caps; target->options = source->options; target->auth_info = source->auth_info; target->port = source->port; @@ -1007,6 +1043,7 @@ struct nfs_server *nfs_alloc_server(void) INIT_LIST_HEAD(&server->ss_src_copies); atomic_set(&server->active, 0); + atomic_long_set(&server->nr_active_delegations, 0); server->io_stats = nfs_alloc_iostats(); if (!server->io_stats) { @@ -1170,6 +1207,8 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source, if (error < 0) goto out_free_server; + nfs_server_set_init_caps(server); + /* probe the filesystem info for this server filesystem */ error = nfs_probe_server(server, fh); if (error < 0) diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 10ef46e29b25..9d3a5f29f17f 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -27,8 +27,15 @@ #define NFS_DEFAULT_DELEGATION_WATERMARK (5000U) -static atomic_long_t nfs_active_delegations; static unsigned nfs_delegation_watermark = NFS_DEFAULT_DELEGATION_WATERMARK; +module_param_named(delegation_watermark, nfs_delegation_watermark, uint, 0644); + +static struct hlist_head *nfs_delegation_hash(struct nfs_server *server, + const struct nfs_fh *fhandle) +{ + return server->delegation_hash_table + + (nfs_fhandle_hash(fhandle) & server->delegation_hash_mask); +} static void __nfs_free_delegation(struct nfs_delegation *delegation) { @@ -37,11 +44,12 @@ static void __nfs_free_delegation(struct nfs_delegation *delegation) kfree_rcu(delegation, rcu); } -static void nfs_mark_delegation_revoked(struct nfs_delegation *delegation) +static void nfs_mark_delegation_revoked(struct nfs_server *server, + struct nfs_delegation *delegation) { if (!test_and_set_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) { delegation->stateid.type = NFS4_INVALID_STATEID_TYPE; - atomic_long_dec(&nfs_active_delegations); + atomic_long_dec(&server->nr_active_delegations); if (!test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) nfs_clear_verifier_delegated(delegation->inode); } @@ -59,9 +67,10 @@ static void nfs_put_delegation(struct nfs_delegation *delegation) __nfs_free_delegation(delegation); } -static void nfs_free_delegation(struct nfs_delegation *delegation) +static void nfs_free_delegation(struct nfs_server *server, + struct nfs_delegation *delegation) { - nfs_mark_delegation_revoked(delegation); + nfs_mark_delegation_revoked(server, delegation); nfs_put_delegation(delegation); } @@ -237,34 +246,34 @@ void nfs_inode_reclaim_delegation(struct inode *inode, const struct cred *cred, rcu_read_lock(); delegation = rcu_dereference(NFS_I(inode)->delegation); - if (delegation != NULL) { - spin_lock(&delegation->lock); - nfs4_stateid_copy(&delegation->stateid, stateid); - delegation->type = type; - delegation->pagemod_limit = pagemod_limit; - oldcred = delegation->cred; - delegation->cred = get_cred(cred); - switch (deleg_type) { - case NFS4_OPEN_DELEGATE_READ_ATTRS_DELEG: - case NFS4_OPEN_DELEGATE_WRITE_ATTRS_DELEG: - set_bit(NFS_DELEGATION_DELEGTIME, &delegation->flags); - break; - default: - clear_bit(NFS_DELEGATION_DELEGTIME, &delegation->flags); - } - clear_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags); - if (test_and_clear_bit(NFS_DELEGATION_REVOKED, - &delegation->flags)) - atomic_long_inc(&nfs_active_delegations); - spin_unlock(&delegation->lock); - rcu_read_unlock(); - put_cred(oldcred); - trace_nfs4_reclaim_delegation(inode, type); - } else { + if (!delegation) { rcu_read_unlock(); nfs_inode_set_delegation(inode, cred, type, stateid, pagemod_limit, deleg_type); + return; } + + spin_lock(&delegation->lock); + nfs4_stateid_copy(&delegation->stateid, stateid); + delegation->type = type; + delegation->pagemod_limit = pagemod_limit; + oldcred = delegation->cred; + delegation->cred = get_cred(cred); + switch (deleg_type) { + case NFS4_OPEN_DELEGATE_READ_ATTRS_DELEG: + case NFS4_OPEN_DELEGATE_WRITE_ATTRS_DELEG: + set_bit(NFS_DELEGATION_DELEGTIME, &delegation->flags); + break; + default: + clear_bit(NFS_DELEGATION_DELEGTIME, &delegation->flags); + } + clear_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags); + if (test_and_clear_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) + atomic_long_inc(&NFS_SERVER(inode)->nr_active_delegations); + spin_unlock(&delegation->lock); + rcu_read_unlock(); + put_cred(oldcred); + trace_nfs4_reclaim_delegation(inode, type); } static int nfs_do_return_delegation(struct inode *inode, @@ -355,6 +364,8 @@ nfs_detach_delegation_locked(struct nfs_inode *nfsi, rcu_dereference_protected(nfsi->delegation, lockdep_is_held(&clp->cl_lock)); + trace_nfs4_detach_delegation(&nfsi->vfs_inode, delegation->type); + if (deleg_cur == NULL || delegation != deleg_cur) return NULL; @@ -363,6 +374,7 @@ nfs_detach_delegation_locked(struct nfs_inode *nfsi, spin_unlock(&delegation->lock); return NULL; } + hlist_del_init_rcu(&delegation->hash); list_del_rcu(&delegation->super_list); delegation->inode = NULL; rcu_assign_pointer(nfsi->delegation, NULL); @@ -410,7 +422,8 @@ nfs_update_delegation_cred(struct nfs_delegation *delegation, } static void -nfs_update_inplace_delegation(struct nfs_delegation *delegation, +nfs_update_inplace_delegation(struct nfs_server *server, + struct nfs_delegation *delegation, const struct nfs_delegation *update) { if (nfs4_stateid_is_newer(&update->stateid, &delegation->stateid)) { @@ -423,7 +436,7 @@ nfs_update_inplace_delegation(struct nfs_delegation *delegation, nfs_update_delegation_cred(delegation, update->cred); /* smp_mb__before_atomic() is implicit due to xchg() */ clear_bit(NFS_DELEGATION_REVOKED, &delegation->flags); - atomic_long_inc(&nfs_active_delegations); + atomic_long_inc(&server->nr_active_delegations); } } } @@ -478,7 +491,7 @@ int nfs_inode_set_delegation(struct inode *inode, const struct cred *cred, if (nfs4_stateid_match_other(&old_delegation->stateid, &delegation->stateid)) { spin_lock(&old_delegation->lock); - nfs_update_inplace_delegation(old_delegation, + nfs_update_inplace_delegation(server, old_delegation, delegation); spin_unlock(&old_delegation->lock); goto out; @@ -524,10 +537,12 @@ add_new: spin_unlock(&inode->i_lock); list_add_tail_rcu(&delegation->super_list, &server->delegations); + hlist_add_head_rcu(&delegation->hash, + nfs_delegation_hash(server, &NFS_I(inode)->fh)); rcu_assign_pointer(nfsi->delegation, delegation); delegation = NULL; - atomic_long_inc(&nfs_active_delegations); + atomic_long_inc(&server->nr_active_delegations); trace_nfs4_set_delegation(inode, type); @@ -541,7 +556,7 @@ out: __nfs_free_delegation(delegation); if (freeme != NULL) { nfs_do_return_delegation(inode, freeme, 0); - nfs_free_delegation(freeme); + nfs_free_delegation(server, freeme); } return status; } @@ -592,6 +607,8 @@ static bool nfs_delegation_need_return(struct nfs_delegation *delegation) { bool ret = false; + trace_nfs_delegation_need_return(delegation); + if (test_and_clear_bit(NFS_DELEGATION_RETURN, &delegation->flags)) ret = true; if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags) || @@ -751,7 +768,7 @@ void nfs_inode_evict_delegation(struct inode *inode) set_bit(NFS_DELEGATION_RETURNING, &delegation->flags); set_bit(NFS_DELEGATION_INODE_FREEING, &delegation->flags); nfs_do_return_delegation(inode, delegation, 1); - nfs_free_delegation(delegation); + nfs_free_delegation(NFS_SERVER(inode), delegation); } } @@ -837,7 +854,8 @@ void nfs4_inode_return_delegation_on_close(struct inode *inode) if (!delegation) goto out; if (test_bit(NFS_DELEGATION_RETURN_IF_CLOSED, &delegation->flags) || - atomic_long_read(&nfs_active_delegations) >= nfs_delegation_watermark) { + atomic_long_read(&NFS_SERVER(inode)->nr_active_delegations) >= + nfs_delegation_watermark) { spin_lock(&delegation->lock); if (delegation->inode && list_empty(&NFS_I(inode)->open_files) && @@ -1013,7 +1031,7 @@ static void nfs_revoke_delegation(struct inode *inode, } spin_unlock(&delegation->lock); } - nfs_mark_delegation_revoked(delegation); + nfs_mark_delegation_revoked(NFS_SERVER(inode), delegation); ret = true; out: rcu_read_unlock(); @@ -1045,7 +1063,7 @@ void nfs_delegation_mark_returned(struct inode *inode, delegation->stateid.seqid = stateid->seqid; } - nfs_mark_delegation_revoked(delegation); + nfs_mark_delegation_revoked(NFS_SERVER(inode), delegation); clear_bit(NFS_DELEGATION_RETURNING, &delegation->flags); spin_unlock(&delegation->lock); if (nfs_detach_delegation(NFS_I(inode), delegation, NFS_SERVER(inode))) @@ -1158,11 +1176,12 @@ static struct inode * nfs_delegation_find_inode_server(struct nfs_server *server, const struct nfs_fh *fhandle) { + struct hlist_head *head = nfs_delegation_hash(server, fhandle); struct nfs_delegation *delegation; struct super_block *freeme = NULL; struct inode *res = NULL; - list_for_each_entry_rcu(delegation, &server->delegations, super_list) { + hlist_for_each_entry_rcu(delegation, head, hash) { spin_lock(&delegation->lock); if (delegation->inode != NULL && !test_bit(NFS_DELEGATION_REVOKED, &delegation->flags) && @@ -1265,7 +1284,7 @@ restart: if (delegation != NULL) { if (nfs_detach_delegation(NFS_I(inode), delegation, server) != NULL) - nfs_free_delegation(delegation); + nfs_free_delegation(server, delegation); /* Match nfs_start_delegation_return_locked */ nfs_put_delegation(delegation); } @@ -1570,4 +1589,17 @@ out: return ret; } -module_param_named(delegation_watermark, nfs_delegation_watermark, uint, 0644); +int nfs4_delegation_hash_alloc(struct nfs_server *server) +{ + int delegation_buckets, i; + + delegation_buckets = roundup_pow_of_two(nfs_delegation_watermark / 16); + server->delegation_hash_mask = delegation_buckets - 1; + server->delegation_hash_table = kmalloc_array(delegation_buckets, + sizeof(*server->delegation_hash_table), GFP_KERNEL); + if (!server->delegation_hash_table) + return -ENOMEM; + for (i = 0; i < delegation_buckets; i++) + INIT_HLIST_HEAD(&server->delegation_hash_table[i]); + return 0; +} diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h index 8ff5ab9c5c25..08ec2e9c68a4 100644 --- a/fs/nfs/delegation.h +++ b/fs/nfs/delegation.h @@ -14,6 +14,7 @@ * NFSv4 delegation */ struct nfs_delegation { + struct hlist_node hash; struct list_head super_list; const struct cred *cred; struct inode *inode; @@ -123,4 +124,6 @@ static inline int nfs_have_delegated_mtime(struct inode *inode) NFS_DELEGATION_FLAG_TIME); } +int nfs4_delegation_hash_alloc(struct nfs_server *server); + #endif diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index d0e0b435a843..d81217923936 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1828,9 +1828,7 @@ static void block_revalidate(struct dentry *dentry) static void unblock_revalidate(struct dentry *dentry) { - /* store_release ensures wait_var_event() sees the update */ - smp_store_release(&dentry->d_fsdata, NULL); - wake_up_var(&dentry->d_fsdata); + store_release_wake_up(&dentry->d_fsdata, NULL); } /* diff --git a/fs/nfs/export.c b/fs/nfs/export.c index e9c233b6fd20..a10dd5f9d078 100644 --- a/fs/nfs/export.c +++ b/fs/nfs/export.c @@ -66,14 +66,21 @@ nfs_fh_to_dentry(struct super_block *sb, struct fid *fid, { struct nfs_fattr *fattr = NULL; struct nfs_fh *server_fh = nfs_exp_embedfh(fid->raw); - size_t fh_size = offsetof(struct nfs_fh, data) + server_fh->size; + size_t fh_size = offsetof(struct nfs_fh, data); const struct nfs_rpc_ops *rpc_ops; struct dentry *dentry; struct inode *inode; - int len = EMBED_FH_OFF + XDR_QUADLEN(fh_size); + int len = EMBED_FH_OFF; u32 *p = fid->raw; int ret; + /* Initial check of bounds */ + if (fh_len < len + XDR_QUADLEN(fh_size) || + fh_len > XDR_QUADLEN(NFS_MAXFHSIZE)) + return NULL; + /* Calculate embedded filehandle size */ + fh_size += server_fh->size; + len += XDR_QUADLEN(fh_size); /* NULL translates to ESTALE */ if (fh_len < len || fh_type != len) return NULL; diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index 4bea008dbebd..8dc921d83538 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -762,14 +762,14 @@ ff_layout_choose_ds_for_read(struct pnfs_layout_segment *lseg, { struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg); struct nfs4_ff_layout_mirror *mirror; - struct nfs4_pnfs_ds *ds; + struct nfs4_pnfs_ds *ds = ERR_PTR(-EAGAIN); u32 idx; /* mirrors are initially sorted by efficiency */ for (idx = start_idx; idx < fls->mirror_array_cnt; idx++) { mirror = FF_LAYOUT_COMP(lseg, idx); ds = nfs4_ff_layout_prepare_ds(lseg, mirror, false); - if (!ds) + if (IS_ERR(ds)) continue; if (check_device && @@ -777,10 +777,10 @@ ff_layout_choose_ds_for_read(struct pnfs_layout_segment *lseg, continue; *best_idx = idx; - return ds; + break; } - return NULL; + return ds; } static struct nfs4_pnfs_ds * @@ -942,7 +942,7 @@ retry: for (i = 0; i < pgio->pg_mirror_count; i++) { mirror = FF_LAYOUT_COMP(pgio->pg_lseg, i); ds = nfs4_ff_layout_prepare_ds(pgio->pg_lseg, mirror, true); - if (!ds) { + if (IS_ERR(ds)) { if (!ff_layout_no_fallback_to_mds(pgio->pg_lseg)) goto out_mds; pnfs_generic_pg_cleanup(pgio); @@ -1867,6 +1867,7 @@ ff_layout_read_pagelist(struct nfs_pgio_header *hdr) u32 idx = hdr->pgio_mirror_idx; int vers; struct nfs_fh *fh; + bool ds_fatal_error = false; dprintk("--> %s ino %lu pgbase %u req %zu@%llu\n", __func__, hdr->inode->i_ino, @@ -1874,8 +1875,10 @@ ff_layout_read_pagelist(struct nfs_pgio_header *hdr) mirror = FF_LAYOUT_COMP(lseg, idx); ds = nfs4_ff_layout_prepare_ds(lseg, mirror, false); - if (!ds) + if (IS_ERR(ds)) { + ds_fatal_error = nfs_error_is_fatal(PTR_ERR(ds)); goto out_failed; + } ds_clnt = nfs4_ff_find_or_create_ds_client(mirror, ds->ds_clp, hdr->inode); @@ -1923,7 +1926,7 @@ ff_layout_read_pagelist(struct nfs_pgio_header *hdr) return PNFS_ATTEMPTED; out_failed: - if (ff_layout_avoid_mds_available_ds(lseg)) + if (ff_layout_avoid_mds_available_ds(lseg) && !ds_fatal_error) return PNFS_TRY_AGAIN; trace_pnfs_mds_fallback_read_pagelist(hdr->inode, hdr->args.offset, hdr->args.count, @@ -1945,11 +1948,14 @@ ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync) int vers; struct nfs_fh *fh; u32 idx = hdr->pgio_mirror_idx; + bool ds_fatal_error = false; mirror = FF_LAYOUT_COMP(lseg, idx); ds = nfs4_ff_layout_prepare_ds(lseg, mirror, true); - if (!ds) + if (IS_ERR(ds)) { + ds_fatal_error = nfs_error_is_fatal(PTR_ERR(ds)); goto out_failed; + } ds_clnt = nfs4_ff_find_or_create_ds_client(mirror, ds->ds_clp, hdr->inode); @@ -2000,7 +2006,7 @@ ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync) return PNFS_ATTEMPTED; out_failed: - if (ff_layout_avoid_mds_available_ds(lseg)) + if (ff_layout_avoid_mds_available_ds(lseg) && !ds_fatal_error) return PNFS_TRY_AGAIN; trace_pnfs_mds_fallback_write_pagelist(hdr->inode, hdr->args.offset, hdr->args.count, @@ -2043,7 +2049,7 @@ static int ff_layout_initiate_commit(struct nfs_commit_data *data, int how) idx = calc_ds_index_from_commit(lseg, data->ds_commit_index); mirror = FF_LAYOUT_COMP(lseg, idx); ds = nfs4_ff_layout_prepare_ds(lseg, mirror, true); - if (!ds) + if (IS_ERR(ds)) goto out_err; ds_clnt = nfs4_ff_find_or_create_ds_client(mirror, ds->ds_clp, diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c index 656d5c50bbce..30365ec782bb 100644 --- a/fs/nfs/flexfilelayout/flexfilelayoutdev.c +++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c @@ -370,11 +370,11 @@ nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, struct nfs4_ff_layout_mirror *mirror, bool fail_return) { - struct nfs4_pnfs_ds *ds = NULL; + struct nfs4_pnfs_ds *ds; struct inode *ino = lseg->pls_layout->plh_inode; struct nfs_server *s = NFS_SERVER(ino); unsigned int max_payload; - int status; + int status = -EAGAIN; if (!ff_layout_init_mirror_ds(lseg->pls_layout, mirror)) goto noconnect; @@ -418,7 +418,7 @@ noconnect: ff_layout_send_layouterror(lseg); if (fail_return || !ff_layout_has_available_ds(lseg)) pnfs_error_mark_layout_for_return(ino, lseg); - ds = NULL; + ds = ERR_PTR(status); out: return ds; } diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c index 13f71ca8c974..9e94d18448ff 100644 --- a/fs/nfs/fs_context.c +++ b/fs/nfs/fs_context.c @@ -96,6 +96,8 @@ enum nfs_param { Opt_wsize, Opt_write, Opt_xprtsec, + Opt_cert_serial, + Opt_privkey_serial, }; enum { @@ -221,6 +223,8 @@ static const struct fs_parameter_spec nfs_fs_parameters[] = { fsparam_enum ("write", Opt_write, nfs_param_enums_write), fsparam_u32 ("wsize", Opt_wsize), fsparam_string("xprtsec", Opt_xprtsec), + fsparam_s32("cert_serial", Opt_cert_serial), + fsparam_s32("privkey_serial", Opt_privkey_serial), {} }; @@ -551,6 +555,32 @@ static int nfs_parse_version_string(struct fs_context *fc, return 0; } +#ifdef CONFIG_KEYS +static int nfs_tls_key_verify(key_serial_t key_id) +{ + struct key *key = key_lookup(key_id); + int error = 0; + + if (IS_ERR(key)) { + pr_err("key id %08x not found\n", key_id); + return PTR_ERR(key); + } + if (test_bit(KEY_FLAG_REVOKED, &key->flags) || + test_bit(KEY_FLAG_INVALIDATED, &key->flags)) { + pr_err("key id %08x revoked\n", key_id); + error = -EKEYREVOKED; + } + + key_put(key); + return error; +} +#else +static inline int nfs_tls_key_verify(key_serial_t key_id) +{ + return -ENOENT; +} +#endif /* CONFIG_KEYS */ + /* * Parse a single mount parameter. */ @@ -807,6 +837,18 @@ static int nfs_fs_context_parse_param(struct fs_context *fc, if (ret < 0) return ret; break; + case Opt_cert_serial: + ret = nfs_tls_key_verify(result.int_32); + if (ret < 0) + return ret; + ctx->xprtsec.cert_serial = result.int_32; + break; + case Opt_privkey_serial: + ret = nfs_tls_key_verify(result.int_32); + if (ret < 0) + return ret; + ctx->xprtsec.privkey_serial = result.int_32; + break; case Opt_proto: if (!param->string) diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index a2fa6bc4d74e..338ef77ae423 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -197,6 +197,7 @@ void nfs_set_cache_invalid(struct inode *inode, unsigned long flags) if (!(flags & NFS_INO_REVAL_FORCED)) flags &= ~(NFS_INO_INVALID_MODE | NFS_INO_INVALID_OTHER | + NFS_INO_INVALID_BTIME | NFS_INO_INVALID_XATTR); flags &= ~(NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_SIZE); } @@ -522,6 +523,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr) inode_set_atime(inode, 0, 0); inode_set_mtime(inode, 0, 0); inode_set_ctime(inode, 0, 0); + memset(&nfsi->btime, 0, sizeof(nfsi->btime)); inode_set_iversion_raw(inode, 0); inode->i_size = 0; clear_nlink(inode); @@ -545,6 +547,10 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr) inode_set_ctime_to_ts(inode, fattr->ctime); else if (fattr_supported & NFS_ATTR_FATTR_CTIME) nfs_set_cache_invalid(inode, NFS_INO_INVALID_CTIME); + if (fattr->valid & NFS_ATTR_FATTR_BTIME) + nfsi->btime = fattr->btime; + else if (fattr_supported & NFS_ATTR_FATTR_BTIME) + nfs_set_cache_invalid(inode, NFS_INO_INVALID_BTIME); if (fattr->valid & NFS_ATTR_FATTR_CHANGE) inode_set_iversion_raw(inode, fattr->change_attr); else @@ -931,6 +937,7 @@ static void nfs_readdirplus_parent_cache_hit(struct dentry *dentry) static u32 nfs_get_valid_attrmask(struct inode *inode) { + u64 fattr_valid = NFS_SERVER(inode)->fattr_valid; unsigned long cache_validity = READ_ONCE(NFS_I(inode)->cache_validity); u32 reply_mask = STATX_INO | STATX_TYPE; @@ -950,6 +957,9 @@ static u32 nfs_get_valid_attrmask(struct inode *inode) reply_mask |= STATX_UID | STATX_GID; if (!(cache_validity & NFS_INO_INVALID_BLOCKS)) reply_mask |= STATX_BLOCKS; + if (!(cache_validity & NFS_INO_INVALID_BTIME) && + (fattr_valid & NFS_ATTR_FATTR_BTIME)) + reply_mask |= STATX_BTIME; if (!(cache_validity & NFS_INO_INVALID_CHANGE)) reply_mask |= STATX_CHANGE_COOKIE; return reply_mask; @@ -960,6 +970,7 @@ int nfs_getattr(struct mnt_idmap *idmap, const struct path *path, { struct inode *inode = d_inode(path->dentry); struct nfs_server *server = NFS_SERVER(inode); + u64 fattr_valid = server->fattr_valid; unsigned long cache_validity; int err = 0; bool force_sync = query_flags & AT_STATX_FORCE_SYNC; @@ -970,9 +981,12 @@ int nfs_getattr(struct mnt_idmap *idmap, const struct path *path, request_mask &= STATX_TYPE | STATX_MODE | STATX_NLINK | STATX_UID | STATX_GID | STATX_ATIME | STATX_MTIME | STATX_CTIME | - STATX_INO | STATX_SIZE | STATX_BLOCKS | + STATX_INO | STATX_SIZE | STATX_BLOCKS | STATX_BTIME | STATX_CHANGE_COOKIE; + if (!(fattr_valid & NFS_ATTR_FATTR_BTIME)) + request_mask &= ~STATX_BTIME; + if ((query_flags & AT_STATX_DONT_SYNC) && !force_sync) { if (readdirplus_enabled) nfs_readdirplus_parent_cache_hit(path->dentry); @@ -1004,7 +1018,7 @@ int nfs_getattr(struct mnt_idmap *idmap, const struct path *path, /* Is the user requesting attributes that might need revalidation? */ if (!(request_mask & (STATX_MODE|STATX_NLINK|STATX_ATIME|STATX_CTIME| STATX_MTIME|STATX_UID|STATX_GID| - STATX_SIZE|STATX_BLOCKS| + STATX_SIZE|STATX_BLOCKS|STATX_BTIME| STATX_CHANGE_COOKIE))) goto out_no_revalidate; @@ -1028,6 +1042,8 @@ int nfs_getattr(struct mnt_idmap *idmap, const struct path *path, do_update |= cache_validity & NFS_INO_INVALID_OTHER; if (request_mask & STATX_BLOCKS) do_update |= cache_validity & NFS_INO_INVALID_BLOCKS; + if (request_mask & STATX_BTIME) + do_update |= cache_validity & NFS_INO_INVALID_BTIME; if (do_update) { if (readdirplus_enabled) @@ -1049,6 +1065,7 @@ out_no_revalidate: stat->attributes |= STATX_ATTR_CHANGE_MONOTONIC; if (S_ISDIR(inode->i_mode)) stat->blksize = NFS_SERVER(inode)->dtsize; + stat->btime = NFS_I(inode)->btime; out: trace_nfs_getattr_exit(inode, err); return err; @@ -1943,7 +1960,7 @@ static int nfs_inode_finish_partial_attr_update(const struct nfs_fattr *fattr, NFS_INO_INVALID_ATIME | NFS_INO_INVALID_CTIME | NFS_INO_INVALID_MTIME | NFS_INO_INVALID_SIZE | NFS_INO_INVALID_BLOCKS | NFS_INO_INVALID_OTHER | - NFS_INO_INVALID_NLINK; + NFS_INO_INVALID_NLINK | NFS_INO_INVALID_BTIME; unsigned long cache_validity = NFS_I(inode)->cache_validity; enum nfs4_change_attr_type ctype = NFS_SERVER(inode)->change_attr_type; @@ -2209,7 +2226,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) bool attr_changed = false; bool have_delegation; - dfprintk(VFS, "NFS: %s(%s/%lu fh_crc=0x%08x ct=%d info=0x%x)\n", + dfprintk(VFS, "NFS: %s(%s/%lu fh_crc=0x%08x ct=%d info=0x%llx)\n", __func__, inode->i_sb->s_id, inode->i_ino, nfs_display_fhandle_hash(NFS_FH(inode)), atomic_read(&inode->i_count), fattr->valid); @@ -2304,7 +2321,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) | NFS_INO_INVALID_BLOCKS | NFS_INO_INVALID_NLINK | NFS_INO_INVALID_MODE - | NFS_INO_INVALID_OTHER; + | NFS_INO_INVALID_OTHER + | NFS_INO_INVALID_BTIME; if (S_ISDIR(inode->i_mode)) nfs_force_lookup_revalidate(inode); attr_changed = true; @@ -2338,6 +2356,12 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) nfsi->cache_validity |= save_cache_validity & NFS_INO_INVALID_CTIME; + if (fattr->valid & NFS_ATTR_FATTR_BTIME) + nfsi->btime = fattr->btime; + else if (fattr_supported & NFS_ATTR_FATTR_BTIME) + nfsi->cache_validity |= + save_cache_validity & NFS_INO_INVALID_BTIME; + /* Check if our cached file size is stale */ if (fattr->valid & NFS_ATTR_FATTR_SIZE) { new_isize = nfs_size_to_loff_t(fattr->size); @@ -2625,6 +2649,35 @@ static struct pernet_operations nfs_net_ops = { .size = sizeof(struct nfs_net), }; +#ifdef CONFIG_KEYS +static struct key *nfs_keyring; + +static int __init nfs_init_keyring(void) +{ + nfs_keyring = keyring_alloc(".nfs", + GLOBAL_ROOT_UID, GLOBAL_ROOT_GID, + current_cred(), + (KEY_POS_ALL & ~KEY_POS_SETATTR) | + (KEY_USR_ALL & ~KEY_USR_SETATTR), + KEY_ALLOC_NOT_IN_QUOTA, NULL, NULL); + return PTR_ERR_OR_ZERO(nfs_keyring); +} + +static void nfs_exit_keyring(void) +{ + key_put(nfs_keyring); +} +#else +static inline int nfs_init_keyring(void) +{ + return 0; +} + +static inline void nfs_exit_keyring(void) +{ +} +#endif /* CONFIG_KEYS */ + /* * Initialize NFS */ @@ -2632,6 +2685,10 @@ static int __init init_nfs_fs(void) { int err; + err = nfs_init_keyring(); + if (err) + return err; + err = nfs_sysfs_init(); if (err < 0) goto out10; @@ -2692,6 +2749,7 @@ out7: out9: nfs_sysfs_exit(); out10: + nfs_exit_keyring(); return err; } @@ -2707,6 +2765,7 @@ static void __exit exit_nfs_fs(void) nfs_fs_proc_exit(); nfsiod_stop(); nfs_sysfs_exit(); + nfs_exit_keyring(); } /* Not quite true; I just maintain it */ diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 26551ff09a52..74d712b58423 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -207,7 +207,6 @@ struct nfs_mount_request { }; extern int nfs_mount(struct nfs_mount_request *info, int timeo, int retrans); -extern void nfs_umount(const struct nfs_mount_request *info); /* client.c */ extern const struct rpc_program nfs_program; @@ -232,7 +231,7 @@ extern struct nfs_client * nfs4_find_client_sessionid(struct net *, const struct sockaddr *, struct nfs4_sessionid *, u32); extern struct nfs_server *nfs_create_server(struct fs_context *); -extern void nfs4_server_set_init_caps(struct nfs_server *); +extern void nfs_server_set_init_caps(struct nfs_server *); extern struct nfs_server *nfs4_create_server(struct fs_context *); extern struct nfs_server *nfs4_create_referral_server(struct fs_context *); extern int nfs4_update_server(struct nfs_server *server, const char *hostname, @@ -671,9 +670,12 @@ nfs_write_match_verf(const struct nfs_writeverf *verf, static inline gfp_t nfs_io_gfp_mask(void) { - if (current->flags & PF_WQ_WORKER) - return GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN; - return GFP_KERNEL; + gfp_t ret = current_gfp_context(GFP_KERNEL); + + /* For workers __GFP_NORETRY only with __GFP_IO or __GFP_FS */ + if ((current->flags & PF_WQ_WORKER) && ret == GFP_KERNEL) + ret |= __GFP_NORETRY | __GFP_NOWARN; + return ret; } /* diff --git a/fs/nfs/localio.c b/fs/nfs/localio.c index 510d0a16cfe9..bd5fca285899 100644 --- a/fs/nfs/localio.c +++ b/fs/nfs/localio.c @@ -500,14 +500,13 @@ nfs_copy_boot_verifier(struct nfs_write_verifier *verifier, struct inode *inode) { struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; u32 *verf = (u32 *)verifier->data; - int seq = 0; + unsigned int seq; do { - read_seqbegin_or_lock(&clp->cl_boot_lock, &seq); + seq = read_seqbegin(&clp->cl_boot_lock); verf[0] = (u32)clp->cl_nfssvc_boot.tv_sec; verf[1] = (u32)clp->cl_nfssvc_boot.tv_nsec; - } while (need_seqretry(&clp->cl_boot_lock, seq)); - done_seqretry(&clp->cl_boot_lock, seq); + } while (read_seqretry(&clp->cl_boot_lock, seq)); } static void diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c index 57c9dd700b58..db8dfb920394 100644 --- a/fs/nfs/mount_clnt.c +++ b/fs/nfs/mount_clnt.c @@ -223,74 +223,6 @@ out_mnt_err: goto out; } -/** - * nfs_umount - Notify a server that we have unmounted this export - * @info: pointer to umount request arguments - * - * MOUNTPROC_UMNT is advisory, so we set a short timeout, and always - * use UDP. - */ -void nfs_umount(const struct nfs_mount_request *info) -{ - static const struct rpc_timeout nfs_umnt_timeout = { - .to_initval = 1 * HZ, - .to_maxval = 3 * HZ, - .to_retries = 2, - }; - struct rpc_create_args args = { - .net = info->net, - .protocol = IPPROTO_UDP, - .address = (struct sockaddr *)info->sap, - .addrsize = info->salen, - .timeout = &nfs_umnt_timeout, - .servername = info->hostname, - .program = &mnt_program, - .version = info->version, - .authflavor = RPC_AUTH_UNIX, - .flags = RPC_CLNT_CREATE_NOPING, - .cred = current_cred(), - }; - struct rpc_message msg = { - .rpc_argp = info->dirpath, - }; - struct rpc_clnt *clnt; - int status; - - if (strlen(info->dirpath) > MNTPATHLEN) - return; - - if (info->noresvport) - args.flags |= RPC_CLNT_CREATE_NONPRIVPORT; - - clnt = rpc_create(&args); - if (IS_ERR(clnt)) - goto out_clnt_err; - - dprintk("NFS: sending UMNT request for %s:%s\n", - (info->hostname ? info->hostname : "server"), info->dirpath); - - if (info->version == NFS_MNT3_VERSION) - msg.rpc_proc = &clnt->cl_procinfo[MOUNTPROC3_UMNT]; - else - msg.rpc_proc = &clnt->cl_procinfo[MOUNTPROC_UMNT]; - - status = rpc_call_sync(clnt, &msg, 0); - rpc_shutdown_client(clnt); - - if (unlikely(status < 0)) - goto out_call_err; - - return; - -out_clnt_err: - dprintk("NFS: failed to create UMNT RPC client, status=%ld\n", - PTR_ERR(clnt)); - return; - -out_call_err: - dprintk("NFS: UMNT request failed, status=%d\n", status); -} - /* * XDR encode/decode functions for MOUNT */ diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index d3ca91f60fc1..c34c89af9c7d 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -63,7 +63,7 @@ struct nfs4_minor_version_ops { bool (*match_stateid)(const nfs4_stateid *, const nfs4_stateid *); int (*find_root_sec)(struct nfs_server *, struct nfs_fh *, - struct nfs_fsinfo *); + struct nfs_fattr *); void (*free_lock_state)(struct nfs_server *, struct nfs4_lock_state *); int (*test_and_free_expired)(struct nfs_server *, @@ -296,7 +296,8 @@ extern int nfs4_call_sync(struct rpc_clnt *, struct nfs_server *, extern void nfs4_init_sequence(struct nfs4_sequence_args *, struct nfs4_sequence_res *, int, int); extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, const struct cred *, struct nfs4_setclientid_res *); extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, const struct cred *); -extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *, bool); +extern int nfs4_proc_get_rootfh(struct nfs_server *, struct nfs_fh *, + struct nfs_fattr *, bool); extern int nfs4_proc_bind_conn_to_session(struct nfs_client *, const struct cred *cred); extern int nfs4_proc_exchange_id(struct nfs_client *clp, const struct cred *cred); extern int nfs4_destroy_clientid(struct nfs_client *clp); diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index 162c85a83a14..6fddf43d729c 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -802,6 +802,7 @@ static void nfs4_destroy_server(struct nfs_server *server) unset_pnfs_layoutdriver(server); nfs4_purge_state_owners(server, &freeme); nfs4_free_state_owners(&freeme); + kfree(server->delegation_hash_table); } /* @@ -895,55 +896,40 @@ nfs4_find_client_sessionid(struct net *net, const struct sockaddr *addr, * Set up an NFS4 client */ static int nfs4_set_client(struct nfs_server *server, - const char *hostname, - const struct sockaddr_storage *addr, - const size_t addrlen, - const char *ip_addr, - int proto, const struct rpc_timeout *timeparms, - u32 minorversion, unsigned int nconnect, - unsigned int max_connect, - struct net *net, - struct xprtsec_parms *xprtsec) + struct nfs_client_initdata *cl_init) { - struct nfs_client_initdata cl_init = { - .hostname = hostname, - .addr = addr, - .addrlen = addrlen, - .ip_addr = ip_addr, - .nfs_mod = &nfs_v4, - .proto = proto, - .minorversion = minorversion, - .net = net, - .timeparms = timeparms, - .cred = server->cred, - .xprtsec = *xprtsec, - }; struct nfs_client *clp; - if (minorversion == 0) - __set_bit(NFS_CS_REUSEPORT, &cl_init.init_flags); - else - cl_init.max_connect = max_connect; - switch (proto) { + cl_init->nfs_mod = &nfs_v4; + cl_init->cred = server->cred; + + if (cl_init->minorversion == 0) { + __set_bit(NFS_CS_REUSEPORT, &cl_init->init_flags); + cl_init->max_connect = 0; + } + + switch (cl_init->proto) { case XPRT_TRANSPORT_RDMA: case XPRT_TRANSPORT_TCP: case XPRT_TRANSPORT_TCP_TLS: - cl_init.nconnect = nconnect; + break; + default: + cl_init->nconnect = 0; } if (server->flags & NFS_MOUNT_NORESVPORT) - __set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags); + __set_bit(NFS_CS_NORESVPORT, &cl_init->init_flags); if (server->options & NFS_OPTION_MIGRATION) - __set_bit(NFS_CS_MIGRATION, &cl_init.init_flags); + __set_bit(NFS_CS_MIGRATION, &cl_init->init_flags); if (test_bit(NFS_MIG_TSM_POSSIBLE, &server->mig_status)) - __set_bit(NFS_CS_TSM_POSSIBLE, &cl_init.init_flags); - server->port = rpc_get_port((struct sockaddr *)addr); + __set_bit(NFS_CS_TSM_POSSIBLE, &cl_init->init_flags); + server->port = rpc_get_port((struct sockaddr *)cl_init->addr); if (server->flags & NFS_MOUNT_NETUNREACH_FATAL) - __set_bit(NFS_CS_NETUNREACH_FATAL, &cl_init.init_flags); + __set_bit(NFS_CS_NETUNREACH_FATAL, &cl_init->init_flags); /* Allocate or find a client reference we can use */ - clp = nfs_get_client(&cl_init); + clp = nfs_get_client(cl_init); if (IS_ERR(clp)) return PTR_ERR(clp); @@ -1088,29 +1074,15 @@ static void nfs4_session_limit_xasize(struct nfs_server *server) #endif } -void nfs4_server_set_init_caps(struct nfs_server *server) -{ - /* Set the basic capabilities */ - server->caps |= server->nfs_client->cl_mvops->init_caps; - if (server->flags & NFS_MOUNT_NORDIRPLUS) - server->caps &= ~NFS_CAP_READDIRPLUS; - if (server->nfs_client->cl_proto == XPRT_TRANSPORT_RDMA) - server->caps &= ~NFS_CAP_READ_PLUS; - - /* - * Don't use NFS uid/gid mapping if we're using AUTH_SYS or lower - * authentication. - */ - if (nfs4_disable_idmapping && - server->client->cl_auth->au_flavor == RPC_AUTH_UNIX) - server->caps |= NFS_CAP_UIDGID_NOMAP; -} - static int nfs4_server_common_setup(struct nfs_server *server, struct nfs_fh *mntfh, bool auth_probe) { int error; + error = nfs4_delegation_hash_alloc(server); + if (error) + return error; + /* data servers support only a subset of NFSv4.1 */ if (is_ds_only_client(server->nfs_client)) return -EPROTONOSUPPORT; @@ -1118,14 +1090,14 @@ static int nfs4_server_common_setup(struct nfs_server *server, /* We must ensure the session is initialised first */ error = nfs4_init_session(server->nfs_client); if (error < 0) - goto out; + return error; - nfs4_server_set_init_caps(server); + nfs_server_set_init_caps(server); /* Probe the root fh to retrieve its FSID and filehandle */ error = nfs4_get_rootfh(server, mntfh, auth_probe); if (error < 0) - goto out; + return error; dprintk("Server FSID: %llx:%llx\n", (unsigned long long) server->fsid.major, @@ -1134,7 +1106,7 @@ static int nfs4_server_common_setup(struct nfs_server *server, error = nfs_probe_server(server, mntfh); if (error < 0) - goto out; + return error; nfs4_session_limit_rwsize(server); nfs4_session_limit_xasize(server); @@ -1145,8 +1117,7 @@ static int nfs4_server_common_setup(struct nfs_server *server, nfs_server_insert_lists(server); server->mount_time = jiffies; server->destroy = nfs4_destroy_server; -out: - return error; + return 0; } /* @@ -1156,6 +1127,19 @@ static int nfs4_init_server(struct nfs_server *server, struct fs_context *fc) { struct nfs_fs_context *ctx = nfs_fc2context(fc); struct rpc_timeout timeparms; + struct nfs_client_initdata cl_init = { + .hostname = ctx->nfs_server.hostname, + .addr = &ctx->nfs_server._address, + .addrlen = ctx->nfs_server.addrlen, + .ip_addr = ctx->client_address, + .proto = ctx->nfs_server.protocol, + .minorversion = ctx->minorversion, + .net = fc->net_ns, + .timeparms = &timeparms, + .xprtsec = ctx->xprtsec, + .nconnect = ctx->nfs_server.nconnect, + .max_connect = ctx->nfs_server.max_connect, + }; int error; nfs_init_timeout_values(&timeparms, ctx->nfs_server.protocol, @@ -1175,18 +1159,7 @@ static int nfs4_init_server(struct nfs_server *server, struct fs_context *fc) ctx->selected_flavor = RPC_AUTH_UNIX; /* Get a client record */ - error = nfs4_set_client(server, - ctx->nfs_server.hostname, - &ctx->nfs_server._address, - ctx->nfs_server.addrlen, - ctx->client_address, - ctx->nfs_server.protocol, - &timeparms, - ctx->minorversion, - ctx->nfs_server.nconnect, - ctx->nfs_server.max_connect, - fc->net_ns, - &ctx->xprtsec); + error = nfs4_set_client(server, &cl_init); if (error < 0) return error; @@ -1246,18 +1219,28 @@ error: struct nfs_server *nfs4_create_referral_server(struct fs_context *fc) { struct nfs_fs_context *ctx = nfs_fc2context(fc); - struct nfs_client *parent_client; - struct nfs_server *server, *parent_server; - int proto, error; + struct nfs_server *parent_server = NFS_SB(ctx->clone_data.sb); + struct nfs_client *parent_client = parent_server->nfs_client; + struct nfs_client_initdata cl_init = { + .hostname = ctx->nfs_server.hostname, + .addr = &ctx->nfs_server._address, + .addrlen = ctx->nfs_server.addrlen, + .ip_addr = parent_client->cl_ipaddr, + .minorversion = parent_client->cl_mvops->minor_version, + .net = parent_client->cl_net, + .timeparms = parent_server->client->cl_timeout, + .xprtsec = parent_client->cl_xprtsec, + .nconnect = parent_client->cl_nconnect, + .max_connect = parent_client->cl_max_connect, + }; + struct nfs_server *server; bool auth_probe; + int error; server = nfs_alloc_server(); if (!server) return ERR_PTR(-ENOMEM); - parent_server = NFS_SB(ctx->clone_data.sb); - parent_client = parent_server->nfs_client; - server->cred = get_cred(parent_server->cred); /* Initialise the client representation from the parent server */ @@ -1266,38 +1249,17 @@ struct nfs_server *nfs4_create_referral_server(struct fs_context *fc) /* Get a client representation */ #if IS_ENABLED(CONFIG_SUNRPC_XPRT_RDMA) rpc_set_port(&ctx->nfs_server.address, NFS_RDMA_PORT); - error = nfs4_set_client(server, - ctx->nfs_server.hostname, - &ctx->nfs_server._address, - ctx->nfs_server.addrlen, - parent_client->cl_ipaddr, - XPRT_TRANSPORT_RDMA, - parent_server->client->cl_timeout, - parent_client->cl_mvops->minor_version, - parent_client->cl_nconnect, - parent_client->cl_max_connect, - parent_client->cl_net, - &parent_client->cl_xprtsec); + cl_init.proto = XPRT_TRANSPORT_RDMA; + error = nfs4_set_client(server, &cl_init); if (!error) goto init_server; #endif /* IS_ENABLED(CONFIG_SUNRPC_XPRT_RDMA) */ - proto = XPRT_TRANSPORT_TCP; + cl_init.proto = XPRT_TRANSPORT_TCP; if (parent_client->cl_xprtsec.policy != RPC_XPRTSEC_NONE) - proto = XPRT_TRANSPORT_TCP_TLS; + cl_init.proto = XPRT_TRANSPORT_TCP_TLS; rpc_set_port(&ctx->nfs_server.address, NFS_PORT); - error = nfs4_set_client(server, - ctx->nfs_server.hostname, - &ctx->nfs_server._address, - ctx->nfs_server.addrlen, - parent_client->cl_ipaddr, - proto, - parent_server->client->cl_timeout, - parent_client->cl_mvops->minor_version, - parent_client->cl_nconnect, - parent_client->cl_max_connect, - parent_client->cl_net, - &parent_client->cl_xprtsec); + error = nfs4_set_client(server, &cl_init); if (error < 0) goto error; @@ -1353,6 +1315,19 @@ int nfs4_update_server(struct nfs_server *server, const char *hostname, char buf[INET6_ADDRSTRLEN + 1]; struct sockaddr_storage address; struct sockaddr *localaddr = (struct sockaddr *)&address; + struct nfs_client_initdata cl_init = { + .hostname = hostname, + .addr = sap, + .addrlen = salen, + .ip_addr = buf, + .proto = clp->cl_proto, + .minorversion = clp->cl_minorversion, + .net = net, + .timeparms = clnt->cl_timeout, + .xprtsec = clp->cl_xprtsec, + .nconnect = clp->cl_nconnect, + .max_connect = clp->cl_max_connect, + }; int error; error = rpc_switch_client_transport(clnt, &xargs, clnt->cl_timeout); @@ -1368,11 +1343,7 @@ int nfs4_update_server(struct nfs_server *server, const char *hostname, nfs_server_remove_lists(server); 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, - clp->cl_nconnect, clp->cl_max_connect, - net, &clp->cl_xprtsec); + error = nfs4_set_client(server, &cl_init); 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 5c749b6117bb..1d6b5f4230c9 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -253,7 +253,6 @@ static loff_t nfs42_remap_file_range(struct file *src_file, loff_t src_off, struct nfs_server *server = NFS_SERVER(dst_inode); struct inode *src_inode = file_inode(src_file); unsigned int bs = server->clone_blksize; - bool same_inode = false; int ret; /* NFS does not support deduplication. */ @@ -275,20 +274,8 @@ static loff_t nfs42_remap_file_range(struct file *src_file, loff_t src_off, goto out; } - if (src_inode == dst_inode) - same_inode = true; - /* XXX: do we lock at all? what if server needs CB_RECALL_LAYOUT? */ - if (same_inode) { - inode_lock(src_inode); - } else if (dst_inode < src_inode) { - inode_lock_nested(dst_inode, I_MUTEX_PARENT); - inode_lock_nested(src_inode, I_MUTEX_CHILD); - } else { - inode_lock_nested(src_inode, I_MUTEX_PARENT); - inode_lock_nested(dst_inode, I_MUTEX_CHILD); - } - + lock_two_nondirectories(src_inode, dst_inode); /* flush all pending writes on both src and dst so that server * has the latest data */ ret = nfs_sync_inode(src_inode); @@ -306,15 +293,7 @@ static loff_t nfs42_remap_file_range(struct file *src_file, loff_t src_off, truncate_inode_pages_range(&dst_inode->i_data, dst_off, dst_off + count - 1); out_unlock: - if (same_inode) { - inode_unlock(src_inode); - } else if (dst_inode < src_inode) { - inode_unlock(src_inode); - inode_unlock(dst_inode); - } else { - inode_unlock(dst_inode); - inode_unlock(src_inode); - } + unlock_two_nondirectories(src_inode, dst_inode); out: return ret < 0 ? ret : count; } diff --git a/fs/nfs/nfs4getroot.c b/fs/nfs/nfs4getroot.c index 1a69479a3a59..e67ea345de69 100644 --- a/fs/nfs/nfs4getroot.c +++ b/fs/nfs/nfs4getroot.c @@ -12,30 +12,28 @@ int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh, bool auth_probe) { - struct nfs_fsinfo fsinfo; + struct nfs_fattr *fattr = nfs_alloc_fattr(); int ret = -ENOMEM; - fsinfo.fattr = nfs_alloc_fattr(); - if (fsinfo.fattr == NULL) + if (fattr == NULL) goto out; /* Start by getting the root filehandle from the server */ - ret = nfs4_proc_get_rootfh(server, mntfh, &fsinfo, auth_probe); + ret = nfs4_proc_get_rootfh(server, mntfh, fattr, auth_probe); if (ret < 0) { dprintk("nfs4_get_rootfh: getroot error = %d\n", -ret); goto out; } - if (!(fsinfo.fattr->valid & NFS_ATTR_FATTR_TYPE) - || !S_ISDIR(fsinfo.fattr->mode)) { + if (!(fattr->valid & NFS_ATTR_FATTR_TYPE) || !S_ISDIR(fattr->mode)) { printk(KERN_ERR "nfs4_get_rootfh:" " getroot encountered non-directory\n"); ret = -ENOTDIR; goto out; } - memcpy(&server->fsid, &fsinfo.fattr->fsid, sizeof(server->fsid)); + memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid)); out: - nfs_free_fattr(fsinfo.fattr); + nfs_free_fattr(fattr); return ret; } diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 341740fa293d..7d2b67e06cc3 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -222,6 +222,7 @@ const u32 nfs4_fattr_bitmap[3] = { | FATTR4_WORD1_RAWDEV | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS + | FATTR4_WORD1_TIME_CREATE | FATTR4_WORD1_TIME_METADATA | FATTR4_WORD1_TIME_MODIFY | FATTR4_WORD1_MOUNTED_ON_FILEID, @@ -243,6 +244,7 @@ static const u32 nfs4_pnfs_open_bitmap[3] = { | FATTR4_WORD1_RAWDEV | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS + | FATTR4_WORD1_TIME_CREATE | FATTR4_WORD1_TIME_METADATA | FATTR4_WORD1_TIME_MODIFY, FATTR4_WORD2_MDSTHRESHOLD @@ -323,6 +325,9 @@ static void nfs4_bitmap_copy_adjust(__u32 *dst, const __u32 *src, if (!(cache_validity & NFS_INO_INVALID_OTHER)) dst[1] &= ~(FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP); + if (!(cache_validity & NFS_INO_INVALID_BTIME)) + dst[1] &= ~FATTR4_WORD1_TIME_CREATE; + if (nfs_have_delegated_mtime(inode)) { if (!(cache_validity & NFS_INO_INVALID_ATIME)) dst[1] &= ~(FATTR4_WORD1_TIME_ACCESS|FATTR4_WORD1_TIME_ACCESS_SET); @@ -1307,7 +1312,8 @@ nfs4_update_changeattr_locked(struct inode *inode, NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL | NFS_INO_INVALID_SIZE | NFS_INO_INVALID_OTHER | NFS_INO_INVALID_BLOCKS | NFS_INO_INVALID_NLINK | - NFS_INO_INVALID_MODE | NFS_INO_INVALID_XATTR; + NFS_INO_INVALID_MODE | NFS_INO_INVALID_BTIME | + NFS_INO_INVALID_XATTR; nfsi->attrtimeo = NFS_MINATTRTIMEO(inode); } nfsi->attrtimeo_timestamp = jiffies; @@ -4047,6 +4053,10 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f server->fattr_valid &= ~NFS_ATTR_FATTR_CTIME; if (!(res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)) server->fattr_valid &= ~NFS_ATTR_FATTR_MTIME; + if (!(res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)) + server->fattr_valid &= ~NFS_ATTR_FATTR_MTIME; + if (!(res.attr_bitmask[1] & FATTR4_WORD1_TIME_CREATE)) + server->fattr_valid &= ~NFS_ATTR_FATTR_BTIME; memcpy(server->attr_bitmask_nl, res.attr_bitmask, sizeof(server->attr_bitmask)); server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; @@ -4082,7 +4092,7 @@ int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle) }; int err; - nfs4_server_set_init_caps(server); + nfs_server_set_init_caps(server); do { err = nfs4_handle_exception(server, _nfs4_server_capabilities(server, fhandle), @@ -4230,15 +4240,18 @@ out: } static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, - struct nfs_fsinfo *info) + struct nfs_fattr *fattr) { - u32 bitmask[3]; + u32 bitmask[3] = { + [0] = FATTR4_WORD0_TYPE | FATTR4_WORD0_CHANGE | + FATTR4_WORD0_SIZE | FATTR4_WORD0_FSID, + }; struct nfs4_lookup_root_arg args = { .bitmask = bitmask, }; struct nfs4_lookup_res res = { .server = server, - .fattr = info->fattr, + .fattr = fattr, .fh = fhandle, }; struct rpc_message msg = { @@ -4247,27 +4260,20 @@ static int _nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, .rpc_resp = &res, }; - bitmask[0] = nfs4_fattr_bitmap[0]; - bitmask[1] = nfs4_fattr_bitmap[1]; - /* - * Process the label in the upcoming getfattr - */ - bitmask[2] = nfs4_fattr_bitmap[2] & ~FATTR4_WORD2_SECURITY_LABEL; - - nfs_fattr_init(info->fattr); + nfs_fattr_init(fattr); return nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); } static int nfs4_lookup_root(struct nfs_server *server, struct nfs_fh *fhandle, - struct nfs_fsinfo *info) + struct nfs_fattr *fattr) { struct nfs4_exception exception = { .interruptible = true, }; int err; do { - err = _nfs4_lookup_root(server, fhandle, info); - trace_nfs4_lookup_root(server, fhandle, info->fattr, err); + err = _nfs4_lookup_root(server, fhandle, fattr); + trace_nfs4_lookup_root(server, fhandle, fattr, err); switch (err) { case 0: case -NFS4ERR_WRONGSEC: @@ -4280,8 +4286,9 @@ out: return err; } -static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, - struct nfs_fsinfo *info, rpc_authflavor_t flavor) +static int nfs4_lookup_root_sec(struct nfs_server *server, + struct nfs_fh *fhandle, struct nfs_fattr *fattr, + rpc_authflavor_t flavor) { struct rpc_auth_create_args auth_args = { .pseudoflavor = flavor, @@ -4291,7 +4298,7 @@ static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandl auth = rpcauth_create(&auth_args, server->client); if (IS_ERR(auth)) return -EACCES; - return nfs4_lookup_root(server, fhandle, info); + return nfs4_lookup_root(server, fhandle, fattr); } /* @@ -4304,7 +4311,7 @@ static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandl * negative errno value. */ static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, - struct nfs_fsinfo *info) + struct nfs_fattr *fattr) { /* Per 3530bis 15.33.5 */ static const rpc_authflavor_t flav_array[] = { @@ -4320,8 +4327,9 @@ static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, if (server->auth_info.flavor_len > 0) { /* try each flavor specified by user */ for (i = 0; i < server->auth_info.flavor_len; i++) { - status = nfs4_lookup_root_sec(server, fhandle, info, - server->auth_info.flavors[i]); + status = nfs4_lookup_root_sec( + server, fhandle, fattr, + server->auth_info.flavors[i]); if (status == -NFS4ERR_WRONGSEC || status == -EACCES) continue; break; @@ -4329,7 +4337,7 @@ static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, } else { /* no flavors specified by user, try default list */ for (i = 0; i < ARRAY_SIZE(flav_array); i++) { - status = nfs4_lookup_root_sec(server, fhandle, info, + status = nfs4_lookup_root_sec(server, fhandle, fattr, flav_array[i]); if (status == -NFS4ERR_WRONGSEC || status == -EACCES) continue; @@ -4353,28 +4361,22 @@ static int nfs4_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, * nfs4_proc_get_rootfh - get file handle for server's pseudoroot * @server: initialized nfs_server handle * @fhandle: we fill in the pseudo-fs root file handle - * @info: we fill in an FSINFO struct + * @fattr: we fill in a bare bones struct fattr * @auth_probe: probe the auth flavours * * Returns zero on success, or a negative errno. */ int nfs4_proc_get_rootfh(struct nfs_server *server, struct nfs_fh *fhandle, - struct nfs_fsinfo *info, - bool auth_probe) + struct nfs_fattr *fattr, bool auth_probe) { int status = 0; if (!auth_probe) - status = nfs4_lookup_root(server, fhandle, info); + status = nfs4_lookup_root(server, fhandle, fattr); if (auth_probe || status == NFS4ERR_WRONGSEC) - status = server->nfs_client->cl_mvops->find_root_sec(server, - fhandle, info); - - if (status == 0) - status = nfs4_server_capabilities(server, fhandle); - if (status == 0) - status = nfs4_do_fsinfo(server, fhandle, info); + status = server->nfs_client->cl_mvops->find_root_sec( + server, fhandle, fattr); return nfs4_map_errors(status); } @@ -5781,6 +5783,8 @@ void nfs4_bitmask_set(__u32 bitmask[], const __u32 src[], bitmask[1] |= FATTR4_WORD1_TIME_MODIFY; if (cache_validity & NFS_INO_INVALID_BLOCKS) bitmask[1] |= FATTR4_WORD1_SPACE_USED; + if (cache_validity & NFS_INO_INVALID_BTIME) + bitmask[1] |= FATTR4_WORD1_TIME_CREATE; if (cache_validity & NFS_INO_INVALID_SIZE) bitmask[0] |= FATTR4_WORD0_SIZE; @@ -10339,10 +10343,10 @@ nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync) * Use the state managment nfs_client cl_rpcclient, which uses krb5i (if * possible) as per RFC3530bis and RFC5661 Security Considerations sections */ -static int -_nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, - struct nfs_fsinfo *info, - struct nfs4_secinfo_flavors *flavors, bool use_integrity) +static int _nfs41_proc_secinfo_no_name(struct nfs_server *server, + struct nfs_fh *fhandle, + struct nfs4_secinfo_flavors *flavors, + bool use_integrity) { struct nfs41_secinfo_no_name_args args = { .style = SECINFO_STYLE_CURRENT_FH, @@ -10386,9 +10390,9 @@ _nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, return status; } -static int -nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, - struct nfs_fsinfo *info, struct nfs4_secinfo_flavors *flavors) +static int nfs41_proc_secinfo_no_name(struct nfs_server *server, + struct nfs_fh *fhandle, + struct nfs4_secinfo_flavors *flavors) { struct nfs4_exception exception = { .interruptible = true, @@ -10400,7 +10404,7 @@ nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, /* try to use integrity protection with machine cred */ if (_nfs4_is_integrity_protected(server->nfs_client)) - err = _nfs41_proc_secinfo_no_name(server, fhandle, info, + err = _nfs41_proc_secinfo_no_name(server, fhandle, flavors, true); /* @@ -10410,7 +10414,7 @@ nfs41_proc_secinfo_no_name(struct nfs_server *server, struct nfs_fh *fhandle, * the current filesystem's rpc_client and the user cred. */ if (err == -NFS4ERR_WRONGSEC) - err = _nfs41_proc_secinfo_no_name(server, fhandle, info, + err = _nfs41_proc_secinfo_no_name(server, fhandle, flavors, false); switch (err) { @@ -10426,9 +10430,8 @@ out: return err; } -static int -nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, - struct nfs_fsinfo *info) +static int nfs41_find_root_sec(struct nfs_server *server, + struct nfs_fh *fhandle, struct nfs_fattr *fattr) { int err; struct page *page; @@ -10444,14 +10447,14 @@ nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, } flavors = page_address(page); - err = nfs41_proc_secinfo_no_name(server, fhandle, info, flavors); + err = nfs41_proc_secinfo_no_name(server, fhandle, flavors); /* * Fall back on "guess and check" method if * the server doesn't support SECINFO_NO_NAME */ if (err == -NFS4ERR_WRONGSEC || err == -ENOTSUPP) { - err = nfs4_find_root_sec(server, fhandle, info); + err = nfs4_find_root_sec(server, fhandle, fattr); goto out_freepage; } if (err) @@ -10476,8 +10479,8 @@ nfs41_find_root_sec(struct nfs_server *server, struct nfs_fh *fhandle, flavor = RPC_AUTH_MAXFLAVOR; if (flavor != RPC_AUTH_MAXFLAVOR) { - err = nfs4_lookup_root_sec(server, fhandle, - info, flavor); + err = nfs4_lookup_root_sec(server, fhandle, fattr, + flavor); if (!err) break; } @@ -10680,6 +10683,8 @@ nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) static bool nfs41_match_stateid(const nfs4_stateid *s1, const nfs4_stateid *s2) { + trace_nfs41_match_stateid(s1, s2); + if (s1->type != s2->type) return false; @@ -10697,6 +10702,8 @@ static bool nfs41_match_stateid(const nfs4_stateid *s1, static bool nfs4_match_stateid(const nfs4_stateid *s1, const nfs4_stateid *s2) { + trace_nfs4_match_stateid(s1, s2); + return nfs4_stateid_match(s1, s2); } @@ -10867,7 +10874,7 @@ const struct nfs4_minor_version_ops *nfs_v4_minor_ops[] = { static ssize_t nfs4_listxattr(struct dentry *dentry, char *list, size_t size) { - ssize_t error, error2, error3, error4; + ssize_t error, error2, error3, error4 = 0; size_t left = size; error = generic_listxattr(dentry, list, left); @@ -10895,9 +10902,11 @@ static ssize_t nfs4_listxattr(struct dentry *dentry, char *list, size_t size) left -= error3; } - error4 = security_inode_listsecurity(d_inode(dentry), list, left); - if (error4 < 0) - return error4; + if (!nfs_server_capable(d_inode(dentry), NFS_CAP_SECURITY_LABEL)) { + error4 = security_inode_listsecurity(d_inode(dentry), list, left); + if (error4 < 0) + return error4; + } error += error2 + error3 + error4; if (size && error > size) @@ -10951,6 +10960,26 @@ static const struct inode_operations nfs4_file_inode_operations = { .listxattr = nfs4_listxattr, }; +static struct nfs_server *nfs4_clone_server(struct nfs_server *source, + struct nfs_fh *fh, struct nfs_fattr *fattr, + rpc_authflavor_t flavor) +{ + struct nfs_server *server; + int error; + + server = nfs_clone_server(source, fh, fattr, flavor); + if (IS_ERR(server)) + return server; + + error = nfs4_delegation_hash_alloc(server); + if (error) { + nfs_free_server(server); + return ERR_PTR(error); + } + + return server; +} + const struct nfs_rpc_ops nfs_v4_clientops = { .version = 4, /* protocol version */ .dentry_ops = &nfs4_dentry_operations, @@ -11003,7 +11032,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .init_client = nfs4_init_client, .free_client = nfs4_free_client, .create_server = nfs4_create_server, - .clone_server = nfs_clone_server, + .clone_server = nfs4_clone_server, .discover_trunking = nfs4_discover_trunking, .enable_swap = nfs4_enable_swap, .disable_swap = nfs4_disable_swap, diff --git a/fs/nfs/nfs4trace.c b/fs/nfs/nfs4trace.c index 389941ccc9c9..987c92d6364b 100644 --- a/fs/nfs/nfs4trace.c +++ b/fs/nfs/nfs4trace.c @@ -26,11 +26,13 @@ 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); +EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_ds_connect); EXPORT_TRACEPOINT_SYMBOL_GPL(ff_layout_read_error); EXPORT_TRACEPOINT_SYMBOL_GPL(ff_layout_write_error); EXPORT_TRACEPOINT_SYMBOL_GPL(ff_layout_commit_error); +EXPORT_TRACEPOINT_SYMBOL_GPL(bl_ext_tree_prepare_commit); EXPORT_TRACEPOINT_SYMBOL_GPL(bl_pr_key_reg); EXPORT_TRACEPOINT_SYMBOL_GPL(bl_pr_key_reg_err); EXPORT_TRACEPOINT_SYMBOL_GPL(bl_pr_key_unreg); diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h index deab4c0e21a0..9776d220cec3 100644 --- a/fs/nfs/nfs4trace.h +++ b/fs/nfs/nfs4trace.h @@ -14,6 +14,8 @@ #include <trace/misc/fs.h> #include <trace/misc/nfs.h> +#include "delegation.h" + #define show_nfs_fattr_flags(valid) \ __print_flags((unsigned long)valid, "|", \ { NFS_ATTR_FATTR_TYPE, "TYPE" }, \ @@ -30,7 +32,8 @@ { NFS_ATTR_FATTR_CTIME, "CTIME" }, \ { NFS_ATTR_FATTR_CHANGE, "CHANGE" }, \ { NFS_ATTR_FATTR_OWNER_NAME, "OWNER_NAME" }, \ - { NFS_ATTR_FATTR_GROUP_NAME, "GROUP_NAME" }) + { NFS_ATTR_FATTR_GROUP_NAME, "GROUP_NAME" }, \ + { NFS_ATTR_FATTR_BTIME, "BTIME" }) DECLARE_EVENT_CLASS(nfs4_clientid_event, TP_PROTO( @@ -273,6 +276,32 @@ TRACE_EVENT(nfs4_cb_offload, show_nfs_stable_how(__entry->cb_how) ) ); + +TRACE_EVENT(pnfs_ds_connect, + TP_PROTO( + char *ds_remotestr, + int status + ), + + TP_ARGS(ds_remotestr, status), + + TP_STRUCT__entry( + __string(ds_ips, ds_remotestr) + __field(int, status) + ), + + TP_fast_assign( + __assign_str(ds_ips); + __entry->status = status; + ), + + TP_printk( + "ds_ips=%s, status=%d", + __get_str(ds_ips), + __entry->status + ) +); + #endif /* CONFIG_NFS_V4_1 */ TRACE_EVENT(nfs4_setup_sequence, @@ -956,6 +985,52 @@ DECLARE_EVENT_CLASS(nfs4_set_delegation_event, TP_ARGS(inode, fmode)) DEFINE_NFS4_SET_DELEGATION_EVENT(nfs4_set_delegation); DEFINE_NFS4_SET_DELEGATION_EVENT(nfs4_reclaim_delegation); +DEFINE_NFS4_SET_DELEGATION_EVENT(nfs4_detach_delegation); + +#define show_delegation_flags(flags) \ + __print_flags(flags, "|", \ + { BIT(NFS_DELEGATION_NEED_RECLAIM), "NEED_RECLAIM" }, \ + { BIT(NFS_DELEGATION_RETURN), "RETURN" }, \ + { BIT(NFS_DELEGATION_RETURN_IF_CLOSED), "RETURN_IF_CLOSED" }, \ + { BIT(NFS_DELEGATION_REFERENCED), "REFERENCED" }, \ + { BIT(NFS_DELEGATION_RETURNING), "RETURNING" }, \ + { BIT(NFS_DELEGATION_REVOKED), "REVOKED" }, \ + { BIT(NFS_DELEGATION_TEST_EXPIRED), "TEST_EXPIRED" }, \ + { BIT(NFS_DELEGATION_INODE_FREEING), "INODE_FREEING" }, \ + { BIT(NFS_DELEGATION_RETURN_DELAYED), "RETURN_DELAYED" }) + +DECLARE_EVENT_CLASS(nfs4_delegation_event, + TP_PROTO( + const struct nfs_delegation *delegation + ), + + TP_ARGS(delegation), + + TP_STRUCT__entry( + __field(u32, fhandle) + __field(unsigned int, fmode) + __field(unsigned long, flags) + ), + + TP_fast_assign( + __entry->fhandle = nfs_fhandle_hash(NFS_FH(delegation->inode)); + __entry->fmode = delegation->type; + __entry->flags = delegation->flags; + ), + + TP_printk( + "fhandle=0x%08x fmode=%s flags=%s", + __entry->fhandle, show_fs_fmode_flags(__entry->fmode), + show_delegation_flags(__entry->flags) + ) +); +#define DEFINE_NFS4_DELEGATION_EVENT(name) \ + DEFINE_EVENT(nfs4_delegation_event, name, \ + TP_PROTO( \ + const struct nfs_delegation *delegation \ + ), \ + TP_ARGS(delegation)) +DEFINE_NFS4_DELEGATION_EVENT(nfs_delegation_need_return); TRACE_EVENT(nfs4_delegreturn_exit, TP_PROTO( @@ -1449,6 +1524,63 @@ DECLARE_EVENT_CLASS(nfs4_inode_stateid_callback_event, DEFINE_NFS4_INODE_STATEID_CALLBACK_EVENT(nfs4_cb_recall); DEFINE_NFS4_INODE_STATEID_CALLBACK_EVENT(nfs4_cb_layoutrecall_file); +#define show_stateid_type(type) \ + __print_symbolic(type, \ + { NFS4_INVALID_STATEID_TYPE, "INVALID" }, \ + { NFS4_SPECIAL_STATEID_TYPE, "SPECIAL" }, \ + { NFS4_OPEN_STATEID_TYPE, "OPEN" }, \ + { NFS4_LOCK_STATEID_TYPE, "LOCK" }, \ + { NFS4_DELEGATION_STATEID_TYPE, "DELEGATION" }, \ + { NFS4_LAYOUT_STATEID_TYPE, "LAYOUT" }, \ + { NFS4_PNFS_DS_STATEID_TYPE, "PNFS_DS" }, \ + { NFS4_REVOKED_STATEID_TYPE, "REVOKED" }, \ + { NFS4_FREED_STATEID_TYPE, "FREED" }) + +DECLARE_EVENT_CLASS(nfs4_match_stateid_event, + TP_PROTO( + const nfs4_stateid *s1, + const nfs4_stateid *s2 + ), + + TP_ARGS(s1, s2), + + TP_STRUCT__entry( + __field(int, s1_seq) + __field(int, s2_seq) + __field(u32, s1_hash) + __field(u32, s2_hash) + __field(int, s1_type) + __field(int, s2_type) + ), + + TP_fast_assign( + __entry->s1_seq = s1->seqid; + __entry->s1_hash = nfs_stateid_hash(s1); + __entry->s1_type = s1->type; + __entry->s2_seq = s2->seqid; + __entry->s2_hash = nfs_stateid_hash(s2); + __entry->s2_type = s2->type; + ), + + TP_printk( + "s1=%s:%x:%u s2=%s:%x:%u", + show_stateid_type(__entry->s1_type), + __entry->s1_hash, __entry->s1_seq, + show_stateid_type(__entry->s2_type), + __entry->s2_hash, __entry->s2_seq + ) +); + +#define DEFINE_NFS4_MATCH_STATEID_EVENT(name) \ + DEFINE_EVENT(nfs4_match_stateid_event, name, \ + TP_PROTO( \ + const nfs4_stateid *s1, \ + const nfs4_stateid *s2 \ + ), \ + TP_ARGS(s1, s2)) +DEFINE_NFS4_MATCH_STATEID_EVENT(nfs41_match_stateid); +DEFINE_NFS4_MATCH_STATEID_EVENT(nfs4_match_stateid); + DECLARE_EVENT_CLASS(nfs4_idmap_event, TP_PROTO( const char *name, @@ -2163,6 +2295,40 @@ TRACE_EVENT(ff_layout_commit_error, ) ); +TRACE_EVENT(bl_ext_tree_prepare_commit, + TP_PROTO( + int ret, + size_t count, + u64 lwb, + bool not_all_ranges + ), + + TP_ARGS(ret, count, lwb, not_all_ranges), + + TP_STRUCT__entry( + __field(int, ret) + __field(size_t, count) + __field(u64, lwb) + __field(bool, not_all_ranges) + ), + + TP_fast_assign( + __entry->ret = ret; + __entry->count = count; + __entry->lwb = lwb; + __entry->not_all_ranges = not_all_ranges; + ), + + TP_printk( + "ret=%d, found %zu ranges, lwb=%llu%s", + __entry->ret, + __entry->count, + __entry->lwb, + __entry->not_all_ranges ? ", not all ranges encoded" : + "" + ) +); + DECLARE_EVENT_CLASS(pnfs_bl_pr_key_class, TP_PROTO( const struct block_device *bdev, diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 318afde38057..49ff98571fa5 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1623,6 +1623,7 @@ static void encode_readdir(struct xdr_stream *xdr, const struct nfs4_readdir_arg | FATTR4_WORD1_RAWDEV | FATTR4_WORD1_SPACE_USED | FATTR4_WORD1_TIME_ACCESS + | FATTR4_WORD1_TIME_CREATE | FATTR4_WORD1_TIME_METADATA | FATTR4_WORD1_TIME_MODIFY; attrs[2] |= FATTR4_WORD2_SECURITY_LABEL; @@ -4207,6 +4208,24 @@ static int decode_attr_time_access(struct xdr_stream *xdr, uint32_t *bitmap, str return status; } +static int decode_attr_time_create(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) +{ + int status = 0; + + time->tv_sec = 0; + time->tv_nsec = 0; + if (unlikely(bitmap[1] & (FATTR4_WORD1_TIME_CREATE - 1U))) + return -EIO; + if (likely(bitmap[1] & FATTR4_WORD1_TIME_CREATE)) { + status = decode_attr_time(xdr, time); + if (status == 0) + status = NFS_ATTR_FATTR_BTIME; + bitmap[1] &= ~FATTR4_WORD1_TIME_CREATE; + } + dprintk("%s: btime=%lld\n", __func__, time->tv_sec); + return status; +} + static int decode_attr_time_metadata(struct xdr_stream *xdr, uint32_t *bitmap, struct timespec64 *time) { int status = 0; @@ -4781,6 +4800,11 @@ static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, goto xdr_error; fattr->valid |= status; + status = decode_attr_time_create(xdr, bitmap, &fattr->btime); + if (status < 0) + goto xdr_error; + fattr->valid |= status; + status = decode_attr_time_metadata(xdr, bitmap, &fattr->ctime); if (status < 0) goto xdr_error; diff --git a/fs/nfs/nfstrace.h b/fs/nfs/nfstrace.h index 7a058bd8c566..96b1323318c2 100644 --- a/fs/nfs/nfstrace.h +++ b/fs/nfs/nfstrace.h @@ -32,7 +32,8 @@ { NFS_INO_INVALID_BLOCKS, "INVALID_BLOCKS" }, \ { NFS_INO_INVALID_XATTR, "INVALID_XATTR" }, \ { NFS_INO_INVALID_NLINK, "INVALID_NLINK" }, \ - { NFS_INO_INVALID_MODE, "INVALID_MODE" }) + { NFS_INO_INVALID_MODE, "INVALID_MODE" }, \ + { NFS_INO_INVALID_BTIME, "INVALID_BTIME" }) #define nfs_show_nfsi_flags(v) \ __print_flags(v, "|", \ @@ -56,6 +57,7 @@ DECLARE_EVENT_CLASS(nfs_inode_event, __field(u32, fhandle) __field(u64, fileid) __field(u64, version) + __field(unsigned long, cache_validity) ), TP_fast_assign( @@ -64,14 +66,17 @@ DECLARE_EVENT_CLASS(nfs_inode_event, __entry->fileid = nfsi->fileid; __entry->fhandle = nfs_fhandle_hash(&nfsi->fh); __entry->version = inode_peek_iversion_raw(inode); + __entry->cache_validity = nfsi->cache_validity; ), TP_printk( - "fileid=%02x:%02x:%llu fhandle=0x%08x version=%llu ", + "fileid=%02x:%02x:%llu fhandle=0x%08x version=%llu cache_validity=0x%lx (%s)", MAJOR(__entry->dev), MINOR(__entry->dev), (unsigned long long)__entry->fileid, __entry->fhandle, - (unsigned long long)__entry->version + (unsigned long long)__entry->version, + __entry->cache_validity, + nfs_show_cache_validity(__entry->cache_validity) ) ); diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 1a7ec68bde15..a3135b5af7ee 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -306,7 +306,6 @@ void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo) { struct inode *inode; - unsigned long i_state; if (!lo) return; @@ -317,12 +316,11 @@ pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo) if (!list_empty(&lo->plh_segs)) WARN_ONCE(1, "NFS: BUG unfreed layout segments.\n"); pnfs_detach_layout_hdr(lo); - i_state = inode->i_state; + /* Notify pnfs_destroy_layout_final() that we're done */ + if (inode->i_state & (I_FREEING | I_CLEAR)) + wake_up_var_locked(lo, &inode->i_lock); spin_unlock(&inode->i_lock); pnfs_free_layout_hdr(lo); - /* Notify pnfs_destroy_layout_final() that we're done */ - if (i_state & (I_FREEING | I_CLEAR)) - wake_up_var(lo); } } @@ -809,23 +807,17 @@ void pnfs_destroy_layout(struct nfs_inode *nfsi) } EXPORT_SYMBOL_GPL(pnfs_destroy_layout); -static bool pnfs_layout_removed(struct nfs_inode *nfsi, - struct pnfs_layout_hdr *lo) -{ - bool ret; - - spin_lock(&nfsi->vfs_inode.i_lock); - ret = nfsi->layout != lo; - spin_unlock(&nfsi->vfs_inode.i_lock); - return ret; -} - void pnfs_destroy_layout_final(struct nfs_inode *nfsi) { struct pnfs_layout_hdr *lo = __pnfs_destroy_layout(nfsi); + struct inode *inode = &nfsi->vfs_inode; - if (lo) - wait_var_event(lo, pnfs_layout_removed(nfsi, lo)); + if (lo) { + spin_lock(&inode->i_lock); + wait_var_event_spinlock(lo, nfsi->layout != lo, + &inode->i_lock); + spin_unlock(&inode->i_lock); + } } static bool @@ -3340,6 +3332,7 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync) struct nfs_inode *nfsi = NFS_I(inode); loff_t end_pos; int status; + bool mark_as_dirty = false; if (!pnfs_layoutcommit_outstanding(inode)) return 0; @@ -3391,19 +3384,23 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync) if (ld->prepare_layoutcommit) { status = ld->prepare_layoutcommit(&data->args); if (status) { - put_cred(data->cred); + if (status != -ENOSPC) + put_cred(data->cred); spin_lock(&inode->i_lock); set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags); if (end_pos > nfsi->layout->plh_lwb) nfsi->layout->plh_lwb = end_pos; - goto out_unlock; + if (status != -ENOSPC) + goto out_unlock; + spin_unlock(&inode->i_lock); + mark_as_dirty = true; } } status = nfs4_proc_layoutcommit(data, sync); out: - if (status) + if (status || mark_as_dirty) mark_inode_dirty_sync(inode); dprintk("<-- %s status %d\n", __func__, status); return status; diff --git a/fs/nfs/pnfs_nfs.c b/fs/nfs/pnfs_nfs.c index b4ccdf78d4dd..7b32afb29782 100644 --- a/fs/nfs/pnfs_nfs.c +++ b/fs/nfs/pnfs_nfs.c @@ -17,6 +17,7 @@ #include "internal.h" #include "pnfs.h" #include "netns.h" +#include "nfs4trace.h" #define NFSDBG_FACILITY NFSDBG_PNFS @@ -1007,8 +1008,10 @@ int nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds, err = nfs4_wait_ds_connect(ds); if (err || ds->ds_clp) goto out; - if (nfs4_test_deviceid_unavailable(devid)) - return -ENODEV; + if (nfs4_test_deviceid_unavailable(devid)) { + err = -ENODEV; + goto out; + } } while (test_and_set_bit(NFS4DS_CONNECTING, &ds->ds_state) != 0); if (ds->ds_clp) @@ -1038,11 +1041,12 @@ out: if (!ds->ds_clp || !nfs_client_init_is_complete(ds->ds_clp)) { WARN_ON_ONCE(ds->ds_clp || !nfs4_test_deviceid_unavailable(devid)); - return -EINVAL; - } - err = nfs_client_init_status(ds->ds_clp); + err = -EINVAL; + } else + err = nfs_client_init_status(ds->ds_clp); } + trace_pnfs_ds_connect(ds->ds_remotestr, err); return err; } EXPORT_SYMBOL_GPL(nfs4_pnfs_ds_connect); diff --git a/fs/nfs/write.c b/fs/nfs/write.c index cf1d720b8251..fa5c41d0989a 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -2113,8 +2113,12 @@ int nfs_migrate_folio(struct address_space *mapping, struct folio *dst, * that we can safely release the inode reference while holding * the folio lock. */ - if (folio_test_private(src)) - return -EBUSY; + if (folio_test_private(src)) { + if (mode == MIGRATE_SYNC) + nfs_wb_folio(src->mapping->host, src); + if (folio_test_private(src)) + return -EBUSY; + } if (folio_test_private_2(src)) { /* [DEPRECATED] */ if (mode == MIGRATE_ASYNC) diff --git a/fs/nfs_common/nfslocalio.c b/fs/nfs_common/nfslocalio.c index 05c7c16e37ab..dd715cdb6c04 100644 --- a/fs/nfs_common/nfslocalio.c +++ b/fs/nfs_common/nfslocalio.c @@ -177,7 +177,7 @@ static bool nfs_uuid_put(nfs_uuid_t *nfs_uuid) /* nfs_close_local_fh() is doing the * close and we must wait. until it unlinks */ - wait_var_event_spinlock(nfl, + wait_var_event_spinlock(nfs_uuid, list_first_entry_or_null( &nfs_uuid->files, struct nfs_file_localio, @@ -198,8 +198,7 @@ static bool nfs_uuid_put(nfs_uuid_t *nfs_uuid) /* Now we can allow racing nfs_close_local_fh() to * skip the locking. */ - RCU_INIT_POINTER(nfl->nfs_uuid, NULL); - wake_up_var_locked(&nfl->nfs_uuid, &nfs_uuid->lock); + store_release_wake_up(&nfl->nfs_uuid, RCU_INITIALIZER(NULL)); } /* Remove client from nn->local_clients */ @@ -243,15 +242,20 @@ void nfs_localio_invalidate_clients(struct list_head *nn_local_clients, } EXPORT_SYMBOL_GPL(nfs_localio_invalidate_clients); -static void nfs_uuid_add_file(nfs_uuid_t *nfs_uuid, struct nfs_file_localio *nfl) +static int nfs_uuid_add_file(nfs_uuid_t *nfs_uuid, struct nfs_file_localio *nfl) { + int ret = 0; + /* Add nfl to nfs_uuid->files if it isn't already */ spin_lock(&nfs_uuid->lock); - if (list_empty(&nfl->list)) { + if (rcu_access_pointer(nfs_uuid->net) == NULL) { + ret = -ENXIO; + } else if (list_empty(&nfl->list)) { rcu_assign_pointer(nfl->nfs_uuid, nfs_uuid); list_add_tail(&nfl->list, &nfs_uuid->files); } spin_unlock(&nfs_uuid->lock); + return ret; } /* @@ -285,11 +289,13 @@ struct nfsd_file *nfs_open_local_fh(nfs_uuid_t *uuid, } rcu_read_unlock(); /* We have an implied reference to net thanks to nfsd_net_try_get */ - localio = nfs_to->nfsd_open_local_fh(net, uuid->dom, rpc_clnt, - cred, nfs_fh, pnf, fmode); + localio = nfs_to->nfsd_open_local_fh(net, uuid->dom, rpc_clnt, cred, + nfs_fh, pnf, fmode); + if (!IS_ERR(localio) && nfs_uuid_add_file(uuid, nfl) < 0) { + /* Delete the cached file when racing with nfs_uuid_put() */ + nfs_to_nfsd_file_put_local(pnf); + } nfs_to_nfsd_net_put(net); - if (!IS_ERR(localio)) - nfs_uuid_add_file(uuid, nfl); return localio; } @@ -314,7 +320,7 @@ void nfs_close_local_fh(struct nfs_file_localio *nfl) rcu_read_unlock(); return; } - if (list_empty(&nfs_uuid->files)) { + if (list_empty(&nfl->list)) { /* nfs_uuid_put() has started closing files, wait for it * to finished */ @@ -338,7 +344,7 @@ void nfs_close_local_fh(struct nfs_file_localio *nfl) */ spin_lock(&nfs_uuid->lock); list_del_init(&nfl->list); - wake_up_var_locked(&nfl->nfs_uuid, &nfs_uuid->lock); + wake_up_var_locked(nfs_uuid, &nfs_uuid->lock); spin_unlock(&nfs_uuid->lock); } EXPORT_SYMBOL_GPL(nfs_close_local_fh); diff --git a/fs/smb/client/Makefile b/fs/smb/client/Makefile index 22023e30915b..4c97b31a25c2 100644 --- a/fs/smb/client/Makefile +++ b/fs/smb/client/Makefile @@ -32,6 +32,6 @@ cifs-$(CONFIG_CIFS_SMB_DIRECT) += smbdirect.o cifs-$(CONFIG_CIFS_ROOT) += cifsroot.o -cifs-$(CONFIG_CIFS_ALLOW_INSECURE_LEGACY) += smb1ops.o cifssmb.o +cifs-$(CONFIG_CIFS_ALLOW_INSECURE_LEGACY) += smb1ops.o cifssmb.o cifstransport.o cifs-$(CONFIG_CIFS_COMPRESSION) += compress.o compress/lz77.o diff --git a/fs/smb/client/cifs_debug.c b/fs/smb/client/cifs_debug.c index f1cea365b6f1..beb4f18f05ef 100644 --- a/fs/smb/client/cifs_debug.c +++ b/fs/smb/client/cifs_debug.c @@ -60,7 +60,7 @@ void cifs_dump_mids(struct TCP_Server_Info *server) return; cifs_dbg(VFS, "Dump pending requests:\n"); - spin_lock(&server->mid_lock); + spin_lock(&server->mid_queue_lock); list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) { cifs_dbg(VFS, "State: %d Cmd: %d Pid: %d Cbdata: %p Mid %llu\n", mid_entry->mid_state, @@ -83,7 +83,7 @@ void cifs_dump_mids(struct TCP_Server_Info *server) mid_entry->resp_buf, 62); } } - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); #endif /* CONFIG_CIFS_DEBUG2 */ } @@ -412,6 +412,7 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v) spin_lock(&cifs_tcp_ses_lock); list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) { #ifdef CONFIG_CIFS_SMB_DIRECT + struct smbdirect_socket *sc; struct smbdirect_socket_parameters *sp; #endif @@ -436,7 +437,8 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v) seq_printf(m, "\nSMBDirect transport not available"); goto skip_rdma; } - sp = &server->smbd_conn->socket.parameters; + sc = &server->smbd_conn->socket; + sp = &sc->parameters; seq_printf(m, "\nSMBDirect (in hex) protocol version: %x " "transport status: %x", @@ -465,15 +467,13 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v) seq_printf(m, "\nRead Queue count_reassembly_queue: %x " "count_enqueue_reassembly_queue: %x " "count_dequeue_reassembly_queue: %x " - "fragment_reassembly_remaining: %x " "reassembly_data_length: %x " "reassembly_queue_length: %x", server->smbd_conn->count_reassembly_queue, server->smbd_conn->count_enqueue_reassembly_queue, server->smbd_conn->count_dequeue_reassembly_queue, - server->smbd_conn->fragment_reassembly_remaining, - server->smbd_conn->reassembly_data_length, - server->smbd_conn->reassembly_queue_length); + sc->recv_io.reassembly.data_length, + sc->recv_io.reassembly.queue_length); seq_printf(m, "\nCurrent Credits send_credits: %x " "receive_credits: %x receive_credit_target: %x", atomic_read(&server->smbd_conn->send_credits), @@ -481,10 +481,8 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v) server->smbd_conn->receive_credit_target); seq_printf(m, "\nPending send_pending: %x ", atomic_read(&server->smbd_conn->send_pending)); - seq_printf(m, "\nReceive buffers count_receive_queue: %x " - "count_empty_packet_queue: %x", - server->smbd_conn->count_receive_queue, - server->smbd_conn->count_empty_packet_queue); + seq_printf(m, "\nReceive buffers count_receive_queue: %x ", + server->smbd_conn->count_receive_queue); seq_printf(m, "\nMR responder_resources: %x " "max_frmr_depth: %x mr_type: %x", server->smbd_conn->responder_resources, @@ -672,7 +670,7 @@ skip_rdma: seq_printf(m, "\n\tServer ConnectionId: 0x%llx", chan_server->conn_id); - spin_lock(&chan_server->mid_lock); + spin_lock(&chan_server->mid_queue_lock); list_for_each_entry(mid_entry, &chan_server->pending_mid_q, qhead) { seq_printf(m, "\n\t\tState: %d com: %d pid: %d cbdata: %p mid %llu", mid_entry->mid_state, @@ -681,7 +679,7 @@ skip_rdma: mid_entry->callback_data, mid_entry->mid); } - spin_unlock(&chan_server->mid_lock); + spin_unlock(&chan_server->mid_queue_lock); } spin_unlock(&ses->chan_lock); seq_puts(m, "\n--\n"); diff --git a/fs/smb/client/cifsfs.c b/fs/smb/client/cifsfs.c index 0fdadd668a81..3bd85ab2deb1 100644 --- a/fs/smb/client/cifsfs.c +++ b/fs/smb/client/cifsfs.c @@ -77,7 +77,7 @@ unsigned int global_secflags = CIFSSEC_DEF; unsigned int GlobalCurrentXid; /* protected by GlobalMid_Lock */ unsigned int GlobalTotalActiveXid; /* prot by GlobalMid_Lock */ unsigned int GlobalMaxActiveXid; /* prot by GlobalMid_Lock */ -spinlock_t GlobalMid_Lock; /* protects above & list operations on midQ entries */ +DEFINE_SPINLOCK(GlobalMid_Lock); /* protects above & list operations on midQ entries */ /* * Global counters, updated atomically @@ -97,7 +97,7 @@ atomic_t total_buf_alloc_count; atomic_t total_small_buf_alloc_count; #endif/* STATS2 */ struct list_head cifs_tcp_ses_list; -spinlock_t cifs_tcp_ses_lock; +DEFINE_SPINLOCK(cifs_tcp_ses_lock); static const struct super_operations cifs_super_ops; unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE; module_param(CIFSMaxBufSize, uint, 0444); @@ -723,7 +723,7 @@ cifs_show_options(struct seq_file *s, struct dentry *root) else seq_puts(s, ",nativesocket"); seq_show_option(s, "symlink", - cifs_symlink_type_str(get_cifs_symlink_type(cifs_sb))); + cifs_symlink_type_str(cifs_symlink_type(cifs_sb))); seq_printf(s, ",rsize=%u", cifs_sb->ctx->rsize); seq_printf(s, ",wsize=%u", cifs_sb->ctx->wsize); @@ -1863,8 +1863,6 @@ init_cifs(void) GlobalCurrentXid = 0; GlobalTotalActiveXid = 0; GlobalMaxActiveXid = 0; - spin_lock_init(&cifs_tcp_ses_lock); - spin_lock_init(&GlobalMid_Lock); cifs_lock_secret = get_random_u32(); diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h index 19dd901fe8ab..e6830ab3a546 100644 --- a/fs/smb/client/cifsglob.h +++ b/fs/smb/client/cifsglob.h @@ -732,7 +732,8 @@ struct TCP_Server_Info { #endif wait_queue_head_t response_q; wait_queue_head_t request_q; /* if more than maxmpx to srvr must block*/ - spinlock_t mid_lock; /* protect mid queue and it's entries */ + spinlock_t mid_queue_lock; /* protect mid queue */ + spinlock_t mid_counter_lock; struct list_head pending_mid_q; bool noblocksnd; /* use blocking sendmsg */ bool noautotune; /* do not autotune send buf sizes */ @@ -770,7 +771,7 @@ struct TCP_Server_Info { /* SMB_COM_WRITE_RAW or SMB_COM_READ_RAW. */ unsigned int capabilities; /* selective disabling of caps by smb sess */ int timeAdj; /* Adjust for difference in server time zone in sec */ - __u64 CurrentMid; /* multiplex id - rotating counter, protected by GlobalMid_Lock */ + __u64 current_mid; /* multiplex id - rotating counter, protected by mid_counter_lock */ char cryptkey[CIFS_CRYPTO_KEY_SIZE]; /* used by ntlm, ntlmv2 etc */ /* 16th byte of RFC1001 workstation name is always null */ char workstation_RFC1001_name[RFC1001_NAME_LEN_WITH_NULL]; @@ -1729,9 +1730,10 @@ struct mid_q_entry { unsigned int resp_buf_size; int mid_state; /* wish this were enum but can not pass to wait_event */ int mid_rc; /* rc for MID_RC */ - unsigned int mid_flags; __le16 command; /* smb command code */ unsigned int optype; /* operation type */ + bool wait_cancelled:1; /* Cancelled while waiting for response */ + bool deleted_from_q:1; /* Whether Mid has been dequeued frem pending_mid_q */ bool large_buf:1; /* if valid response, is pointer to large buf */ bool multiRsp:1; /* multiple trans2 responses for one request */ bool multiEnd:1; /* both received */ @@ -1893,10 +1895,6 @@ static inline bool is_replayable_error(int error) #define MID_RESPONSE_READY 0x40 /* ready for other process handle the rsp */ #define MID_RC 0x80 /* mid_rc contains custom rc */ -/* Flags */ -#define MID_WAIT_CANCELLED 1 /* Cancelled while waiting for response */ -#define MID_DELETED 2 /* Mid has been dequeued/deleted */ - /* Types of response buffer returned from SendReceive2 */ #define CIFS_NO_BUFFER 0 /* Response buffer not returned */ #define CIFS_SMALL_BUFFER 1 @@ -2007,9 +2005,9 @@ require use of the stronger protocol */ * GlobalCurrentXid * GlobalTotalActiveXid * TCP_Server_Info->srv_lock (anything in struct not protected by another lock and can change) - * TCP_Server_Info->mid_lock TCP_Server_Info->pending_mid_q cifs_get_tcp_session - * ->CurrentMid - * (any changes in mid_q_entry fields) + * TCP_Server_Info->mid_queue_lock TCP_Server_Info->pending_mid_q cifs_get_tcp_session + * mid_q_entry->deleted_from_q + * TCP_Server_Info->mid_counter_lock TCP_Server_Info->current_mid cifs_get_tcp_session * TCP_Server_Info->req_lock TCP_Server_Info->in_flight cifs_get_tcp_session * ->credits * ->echo_credits @@ -2377,4 +2375,9 @@ static inline bool cifs_netbios_name(const char *name, size_t namelen) return ret; } +#define CIFS_REPARSE_SUPPORT(tcon) \ + ((tcon)->posix_extensions || \ + (le32_to_cpu((tcon)->fsAttrInfo.Attributes) & \ + FILE_SUPPORTS_REPARSE_POINTS)) + #endif /* _CIFS_GLOB_H */ diff --git a/fs/smb/client/cifsproto.h b/fs/smb/client/cifsproto.h index 40ec0634377f..c34c533b2efa 100644 --- a/fs/smb/client/cifsproto.h +++ b/fs/smb/client/cifsproto.h @@ -116,16 +116,31 @@ extern int SendReceive(const unsigned int /* xid */ , struct cifs_ses *, int * /* bytes returned */ , const int); extern int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses, char *in_buf, int flags); +int cifs_sync_mid_result(struct mid_q_entry *mid, struct TCP_Server_Info *server); extern struct mid_q_entry *cifs_setup_request(struct cifs_ses *, struct TCP_Server_Info *, struct smb_rqst *); extern struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *, struct smb_rqst *); +int __smb_send_rqst(struct TCP_Server_Info *server, int num_rqst, + struct smb_rqst *rqst); extern int cifs_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server, bool log_error); +int wait_for_free_request(struct TCP_Server_Info *server, const int flags, + unsigned int *instance); extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server, size_t size, size_t *num, struct cifs_credits *credits); + +static inline int +send_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst, + struct mid_q_entry *mid) +{ + return server->ops->send_cancel ? + server->ops->send_cancel(server, rqst, mid) : 0; +} + +int wait_for_response(struct TCP_Server_Info *server, struct mid_q_entry *midQ); extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *, struct kvec *, int /* nvec to send */, int * /* type of buf returned */, const int flags, diff --git a/fs/smb/client/cifssmb.c b/fs/smb/client/cifssmb.c index 6c890db06593..d20766f664c4 100644 --- a/fs/smb/client/cifssmb.c +++ b/fs/smb/client/cifssmb.c @@ -2751,7 +2751,7 @@ int cifs_query_reparse_point(const unsigned int xid, if (cap_unix(tcon->ses)) return -EOPNOTSUPP; - if (!(le32_to_cpu(tcon->fsAttrInfo.Attributes) & FILE_SUPPORTS_REPARSE_POINTS)) + if (!CIFS_REPARSE_SUPPORT(tcon)) return -EOPNOTSUPP; oparms = (struct cifs_open_parms) { @@ -2879,7 +2879,7 @@ struct inode *cifs_create_reparse_inode(struct cifs_open_info_data *data, * attempt to create reparse point. This will prevent creating unusable * empty object on the server. */ - if (!(le32_to_cpu(tcon->fsAttrInfo.Attributes) & FILE_SUPPORTS_REPARSE_POINTS)) + if (!CIFS_REPARSE_SUPPORT(tcon)) return ERR_PTR(-EOPNOTSUPP); #ifndef CONFIG_CIFS_XATTR diff --git a/fs/smb/client/cifstransport.c b/fs/smb/client/cifstransport.c new file mode 100644 index 000000000000..352dafb888dd --- /dev/null +++ b/fs/smb/client/cifstransport.c @@ -0,0 +1,566 @@ +// SPDX-License-Identifier: LGPL-2.1 +/* + * + * Copyright (C) International Business Machines Corp., 2002,2008 + * Author(s): Steve French (sfrench@us.ibm.com) + * Jeremy Allison (jra@samba.org) 2006. + * + */ + +#include <linux/fs.h> +#include <linux/list.h> +#include <linux/gfp.h> +#include <linux/wait.h> +#include <linux/net.h> +#include <linux/delay.h> +#include <linux/freezer.h> +#include <linux/tcp.h> +#include <linux/bvec.h> +#include <linux/highmem.h> +#include <linux/uaccess.h> +#include <linux/processor.h> +#include <linux/mempool.h> +#include <linux/sched/signal.h> +#include <linux/task_io_accounting_ops.h> +#include "cifspdu.h" +#include "cifsglob.h" +#include "cifsproto.h" +#include "cifs_debug.h" +#include "smb2proto.h" +#include "smbdirect.h" +#include "compress.h" + +/* Max number of iovectors we can use off the stack when sending requests. */ +#define CIFS_MAX_IOV_SIZE 8 + +static struct mid_q_entry * +alloc_mid(const struct smb_hdr *smb_buffer, struct TCP_Server_Info *server) +{ + struct mid_q_entry *temp; + + if (server == NULL) { + cifs_dbg(VFS, "%s: null TCP session\n", __func__); + return NULL; + } + + temp = mempool_alloc(cifs_mid_poolp, GFP_NOFS); + memset(temp, 0, sizeof(struct mid_q_entry)); + kref_init(&temp->refcount); + temp->mid = get_mid(smb_buffer); + temp->pid = current->pid; + temp->command = cpu_to_le16(smb_buffer->Command); + cifs_dbg(FYI, "For smb_command %d\n", smb_buffer->Command); + /* easier to use jiffies */ + /* when mid allocated can be before when sent */ + temp->when_alloc = jiffies; + temp->server = server; + + /* + * The default is for the mid to be synchronous, so the + * default callback just wakes up the current task. + */ + get_task_struct(current); + temp->creator = current; + temp->callback = cifs_wake_up_task; + temp->callback_data = current; + + atomic_inc(&mid_count); + temp->mid_state = MID_REQUEST_ALLOCATED; + return temp; +} + +int +smb_send(struct TCP_Server_Info *server, struct smb_hdr *smb_buffer, + unsigned int smb_buf_length) +{ + struct kvec iov[2]; + struct smb_rqst rqst = { .rq_iov = iov, + .rq_nvec = 2 }; + + iov[0].iov_base = smb_buffer; + iov[0].iov_len = 4; + iov[1].iov_base = (char *)smb_buffer + 4; + iov[1].iov_len = smb_buf_length; + + return __smb_send_rqst(server, 1, &rqst); +} + +static int allocate_mid(struct cifs_ses *ses, struct smb_hdr *in_buf, + struct mid_q_entry **ppmidQ) +{ + spin_lock(&ses->ses_lock); + if (ses->ses_status == SES_NEW) { + if ((in_buf->Command != SMB_COM_SESSION_SETUP_ANDX) && + (in_buf->Command != SMB_COM_NEGOTIATE)) { + spin_unlock(&ses->ses_lock); + return -EAGAIN; + } + /* else ok - we are setting up session */ + } + + if (ses->ses_status == SES_EXITING) { + /* check if SMB session is bad because we are setting it up */ + if (in_buf->Command != SMB_COM_LOGOFF_ANDX) { + spin_unlock(&ses->ses_lock); + return -EAGAIN; + } + /* else ok - we are shutting down session */ + } + spin_unlock(&ses->ses_lock); + + *ppmidQ = alloc_mid(in_buf, ses->server); + if (*ppmidQ == NULL) + return -ENOMEM; + spin_lock(&ses->server->mid_queue_lock); + list_add_tail(&(*ppmidQ)->qhead, &ses->server->pending_mid_q); + spin_unlock(&ses->server->mid_queue_lock); + return 0; +} + +struct mid_q_entry * +cifs_setup_async_request(struct TCP_Server_Info *server, struct smb_rqst *rqst) +{ + int rc; + struct smb_hdr *hdr = (struct smb_hdr *)rqst->rq_iov[0].iov_base; + struct mid_q_entry *mid; + + if (rqst->rq_iov[0].iov_len != 4 || + rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base) + return ERR_PTR(-EIO); + + /* enable signing if server requires it */ + if (server->sign) + hdr->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; + + mid = alloc_mid(hdr, server); + if (mid == NULL) + return ERR_PTR(-ENOMEM); + + rc = cifs_sign_rqst(rqst, server, &mid->sequence_number); + if (rc) { + release_mid(mid); + return ERR_PTR(rc); + } + + return mid; +} + +/* + * + * Send an SMB Request. No response info (other than return code) + * needs to be parsed. + * + * flags indicate the type of request buffer and how long to wait + * and whether to log NT STATUS code (error) before mapping it to POSIX error + * + */ +int +SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses, + char *in_buf, int flags) +{ + int rc; + struct kvec iov[1]; + struct kvec rsp_iov; + int resp_buf_type; + + iov[0].iov_base = in_buf; + iov[0].iov_len = get_rfc1002_length(in_buf) + 4; + flags |= CIFS_NO_RSP_BUF; + rc = SendReceive2(xid, ses, iov, 1, &resp_buf_type, flags, &rsp_iov); + cifs_dbg(NOISY, "SendRcvNoRsp flags %d rc %d\n", flags, rc); + + return rc; +} + +int +cifs_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server, + bool log_error) +{ + unsigned int len = get_rfc1002_length(mid->resp_buf) + 4; + + dump_smb(mid->resp_buf, min_t(u32, 92, len)); + + /* convert the length into a more usable form */ + if (server->sign) { + struct kvec iov[2]; + int rc = 0; + struct smb_rqst rqst = { .rq_iov = iov, + .rq_nvec = 2 }; + + iov[0].iov_base = mid->resp_buf; + iov[0].iov_len = 4; + iov[1].iov_base = (char *)mid->resp_buf + 4; + iov[1].iov_len = len - 4; + /* FIXME: add code to kill session */ + rc = cifs_verify_signature(&rqst, server, + mid->sequence_number); + if (rc) + cifs_server_dbg(VFS, "SMB signature verification returned error = %d\n", + rc); + } + + /* BB special case reconnect tid and uid here? */ + return map_and_check_smb_error(mid, log_error); +} + +struct mid_q_entry * +cifs_setup_request(struct cifs_ses *ses, struct TCP_Server_Info *ignored, + struct smb_rqst *rqst) +{ + int rc; + struct smb_hdr *hdr = (struct smb_hdr *)rqst->rq_iov[0].iov_base; + struct mid_q_entry *mid; + + if (rqst->rq_iov[0].iov_len != 4 || + rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base) + return ERR_PTR(-EIO); + + rc = allocate_mid(ses, hdr, &mid); + if (rc) + return ERR_PTR(rc); + rc = cifs_sign_rqst(rqst, ses->server, &mid->sequence_number); + if (rc) { + delete_mid(mid); + return ERR_PTR(rc); + } + return mid; +} + +int +SendReceive2(const unsigned int xid, struct cifs_ses *ses, + struct kvec *iov, int n_vec, int *resp_buf_type /* ret */, + const int flags, struct kvec *resp_iov) +{ + struct smb_rqst rqst; + struct kvec s_iov[CIFS_MAX_IOV_SIZE], *new_iov; + int rc; + + if (n_vec + 1 > CIFS_MAX_IOV_SIZE) { + new_iov = kmalloc_array(n_vec + 1, sizeof(struct kvec), + GFP_KERNEL); + if (!new_iov) { + /* otherwise cifs_send_recv below sets resp_buf_type */ + *resp_buf_type = CIFS_NO_BUFFER; + return -ENOMEM; + } + } else + new_iov = s_iov; + + /* 1st iov is a RFC1001 length followed by the rest of the packet */ + memcpy(new_iov + 1, iov, (sizeof(struct kvec) * n_vec)); + + new_iov[0].iov_base = new_iov[1].iov_base; + new_iov[0].iov_len = 4; + new_iov[1].iov_base += 4; + new_iov[1].iov_len -= 4; + + memset(&rqst, 0, sizeof(struct smb_rqst)); + rqst.rq_iov = new_iov; + rqst.rq_nvec = n_vec + 1; + + rc = cifs_send_recv(xid, ses, ses->server, + &rqst, resp_buf_type, flags, resp_iov); + if (n_vec + 1 > CIFS_MAX_IOV_SIZE) + kfree(new_iov); + return rc; +} + +int +SendReceive(const unsigned int xid, struct cifs_ses *ses, + struct smb_hdr *in_buf, struct smb_hdr *out_buf, + int *pbytes_returned, const int flags) +{ + int rc = 0; + struct mid_q_entry *midQ; + unsigned int len = be32_to_cpu(in_buf->smb_buf_length); + struct kvec iov = { .iov_base = in_buf, .iov_len = len }; + struct smb_rqst rqst = { .rq_iov = &iov, .rq_nvec = 1 }; + struct cifs_credits credits = { .value = 1, .instance = 0 }; + struct TCP_Server_Info *server; + + if (ses == NULL) { + cifs_dbg(VFS, "Null smb session\n"); + return -EIO; + } + server = ses->server; + if (server == NULL) { + cifs_dbg(VFS, "Null tcp session\n"); + return -EIO; + } + + spin_lock(&server->srv_lock); + if (server->tcpStatus == CifsExiting) { + spin_unlock(&server->srv_lock); + return -ENOENT; + } + spin_unlock(&server->srv_lock); + + /* Ensure that we do not send more than 50 overlapping requests + to the same server. We may make this configurable later or + use ses->maxReq */ + + if (len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) { + cifs_server_dbg(VFS, "Invalid length, greater than maximum frame, %d\n", + len); + return -EIO; + } + + rc = wait_for_free_request(server, flags, &credits.instance); + if (rc) + return rc; + + /* make sure that we sign in the same order that we send on this socket + and avoid races inside tcp sendmsg code that could cause corruption + of smb data */ + + cifs_server_lock(server); + + rc = allocate_mid(ses, in_buf, &midQ); + if (rc) { + cifs_server_unlock(server); + /* Update # of requests on wire to server */ + add_credits(server, &credits, 0); + return rc; + } + + rc = cifs_sign_smb(in_buf, server, &midQ->sequence_number); + if (rc) { + cifs_server_unlock(server); + goto out; + } + + midQ->mid_state = MID_REQUEST_SUBMITTED; + + rc = smb_send(server, in_buf, len); + cifs_save_when_sent(midQ); + + if (rc < 0) + server->sequence_number -= 2; + + cifs_server_unlock(server); + + if (rc < 0) + goto out; + + rc = wait_for_response(server, midQ); + if (rc != 0) { + send_cancel(server, &rqst, midQ); + spin_lock(&server->mid_queue_lock); + if (midQ->mid_state == MID_REQUEST_SUBMITTED || + midQ->mid_state == MID_RESPONSE_RECEIVED) { + /* no longer considered to be "in-flight" */ + midQ->callback = release_mid; + spin_unlock(&server->mid_queue_lock); + add_credits(server, &credits, 0); + return rc; + } + spin_unlock(&server->mid_queue_lock); + } + + rc = cifs_sync_mid_result(midQ, server); + if (rc != 0) { + add_credits(server, &credits, 0); + return rc; + } + + if (!midQ->resp_buf || !out_buf || + midQ->mid_state != MID_RESPONSE_READY) { + rc = -EIO; + cifs_server_dbg(VFS, "Bad MID state?\n"); + goto out; + } + + *pbytes_returned = get_rfc1002_length(midQ->resp_buf); + memcpy(out_buf, midQ->resp_buf, *pbytes_returned + 4); + rc = cifs_check_receive(midQ, server, 0); +out: + delete_mid(midQ); + add_credits(server, &credits, 0); + + return rc; +} + +/* We send a LOCKINGX_CANCEL_LOCK to cause the Windows + blocking lock to return. */ + +static int +send_lock_cancel(const unsigned int xid, struct cifs_tcon *tcon, + struct smb_hdr *in_buf, + struct smb_hdr *out_buf) +{ + int bytes_returned; + struct cifs_ses *ses = tcon->ses; + LOCK_REQ *pSMB = (LOCK_REQ *)in_buf; + + /* We just modify the current in_buf to change + the type of lock from LOCKING_ANDX_SHARED_LOCK + or LOCKING_ANDX_EXCLUSIVE_LOCK to + LOCKING_ANDX_CANCEL_LOCK. */ + + pSMB->LockType = LOCKING_ANDX_CANCEL_LOCK|LOCKING_ANDX_LARGE_FILES; + pSMB->Timeout = 0; + pSMB->hdr.Mid = get_next_mid(ses->server); + + return SendReceive(xid, ses, in_buf, out_buf, + &bytes_returned, 0); +} + +int +SendReceiveBlockingLock(const unsigned int xid, struct cifs_tcon *tcon, + struct smb_hdr *in_buf, struct smb_hdr *out_buf, + int *pbytes_returned) +{ + int rc = 0; + int rstart = 0; + struct mid_q_entry *midQ; + struct cifs_ses *ses; + unsigned int len = be32_to_cpu(in_buf->smb_buf_length); + struct kvec iov = { .iov_base = in_buf, .iov_len = len }; + struct smb_rqst rqst = { .rq_iov = &iov, .rq_nvec = 1 }; + unsigned int instance; + struct TCP_Server_Info *server; + + if (tcon == NULL || tcon->ses == NULL) { + cifs_dbg(VFS, "Null smb session\n"); + return -EIO; + } + ses = tcon->ses; + server = ses->server; + + if (server == NULL) { + cifs_dbg(VFS, "Null tcp session\n"); + return -EIO; + } + + spin_lock(&server->srv_lock); + if (server->tcpStatus == CifsExiting) { + spin_unlock(&server->srv_lock); + return -ENOENT; + } + spin_unlock(&server->srv_lock); + + /* Ensure that we do not send more than 50 overlapping requests + to the same server. We may make this configurable later or + use ses->maxReq */ + + if (len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) { + cifs_tcon_dbg(VFS, "Invalid length, greater than maximum frame, %d\n", + len); + return -EIO; + } + + rc = wait_for_free_request(server, CIFS_BLOCKING_OP, &instance); + if (rc) + return rc; + + /* make sure that we sign in the same order that we send on this socket + and avoid races inside tcp sendmsg code that could cause corruption + of smb data */ + + cifs_server_lock(server); + + rc = allocate_mid(ses, in_buf, &midQ); + if (rc) { + cifs_server_unlock(server); + return rc; + } + + rc = cifs_sign_smb(in_buf, server, &midQ->sequence_number); + if (rc) { + delete_mid(midQ); + cifs_server_unlock(server); + return rc; + } + + midQ->mid_state = MID_REQUEST_SUBMITTED; + rc = smb_send(server, in_buf, len); + cifs_save_when_sent(midQ); + + if (rc < 0) + server->sequence_number -= 2; + + cifs_server_unlock(server); + + if (rc < 0) { + delete_mid(midQ); + return rc; + } + + /* Wait for a reply - allow signals to interrupt. */ + rc = wait_event_interruptible(server->response_q, + (!(midQ->mid_state == MID_REQUEST_SUBMITTED || + midQ->mid_state == MID_RESPONSE_RECEIVED)) || + ((server->tcpStatus != CifsGood) && + (server->tcpStatus != CifsNew))); + + /* Were we interrupted by a signal ? */ + spin_lock(&server->srv_lock); + if ((rc == -ERESTARTSYS) && + (midQ->mid_state == MID_REQUEST_SUBMITTED || + midQ->mid_state == MID_RESPONSE_RECEIVED) && + ((server->tcpStatus == CifsGood) || + (server->tcpStatus == CifsNew))) { + spin_unlock(&server->srv_lock); + + if (in_buf->Command == SMB_COM_TRANSACTION2) { + /* POSIX lock. We send a NT_CANCEL SMB to cause the + blocking lock to return. */ + rc = send_cancel(server, &rqst, midQ); + if (rc) { + delete_mid(midQ); + return rc; + } + } else { + /* Windows lock. We send a LOCKINGX_CANCEL_LOCK + to cause the blocking lock to return. */ + + rc = send_lock_cancel(xid, tcon, in_buf, out_buf); + + /* If we get -ENOLCK back the lock may have + already been removed. Don't exit in this case. */ + if (rc && rc != -ENOLCK) { + delete_mid(midQ); + return rc; + } + } + + rc = wait_for_response(server, midQ); + if (rc) { + send_cancel(server, &rqst, midQ); + spin_lock(&server->mid_queue_lock); + if (midQ->mid_state == MID_REQUEST_SUBMITTED || + midQ->mid_state == MID_RESPONSE_RECEIVED) { + /* no longer considered to be "in-flight" */ + midQ->callback = release_mid; + spin_unlock(&server->mid_queue_lock); + return rc; + } + spin_unlock(&server->mid_queue_lock); + } + + /* We got the response - restart system call. */ + rstart = 1; + spin_lock(&server->srv_lock); + } + spin_unlock(&server->srv_lock); + + rc = cifs_sync_mid_result(midQ, server); + if (rc != 0) + return rc; + + /* rcvd frame is ok */ + if (out_buf == NULL || midQ->mid_state != MID_RESPONSE_READY) { + rc = -EIO; + cifs_tcon_dbg(VFS, "Bad MID state?\n"); + goto out; + } + + *pbytes_returned = get_rfc1002_length(midQ->resp_buf); + memcpy(out_buf, midQ->resp_buf, *pbytes_returned + 4); + rc = cifs_check_receive(midQ, server, 0); +out: + delete_mid(midQ); + if (rstart && rc == -EACCES) + return -ERESTARTSYS; + return rc; +} diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c index 5eec8957f2a9..587845a2452d 100644 --- a/fs/smb/client/connect.c +++ b/fs/smb/client/connect.c @@ -321,15 +321,15 @@ cifs_abort_connection(struct TCP_Server_Info *server) /* mark submitted MIDs for retry and issue callback */ INIT_LIST_HEAD(&retry_list); cifs_dbg(FYI, "%s: moving mids to private list\n", __func__); - spin_lock(&server->mid_lock); + spin_lock(&server->mid_queue_lock); list_for_each_entry_safe(mid, nmid, &server->pending_mid_q, qhead) { kref_get(&mid->refcount); if (mid->mid_state == MID_REQUEST_SUBMITTED) mid->mid_state = MID_RETRY_NEEDED; list_move(&mid->qhead, &retry_list); - mid->mid_flags |= MID_DELETED; + mid->deleted_from_q = true; } - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); cifs_server_unlock(server); cifs_dbg(FYI, "%s: issuing mid callbacks\n", __func__); @@ -358,7 +358,7 @@ static bool cifs_tcp_ses_needs_reconnect(struct TCP_Server_Info *server, int num } cifs_dbg(FYI, "Mark tcp session as need reconnect\n"); - trace_smb3_reconnect(server->CurrentMid, server->conn_id, + trace_smb3_reconnect(server->current_mid, server->conn_id, server->hostname); server->tcpStatus = CifsNeedReconnect; @@ -884,13 +884,13 @@ is_smb_response(struct TCP_Server_Info *server, unsigned char type) * server there should be exactly one pending mid * corresponding to SMB1/SMB2 Negotiate packet. */ - spin_lock(&server->mid_lock); + spin_lock(&server->mid_queue_lock); list_for_each_entry_safe(mid, nmid, &server->pending_mid_q, qhead) { kref_get(&mid->refcount); list_move(&mid->qhead, &dispose_list); - mid->mid_flags |= MID_DELETED; + mid->deleted_from_q = true; } - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); /* Now try to reconnect once with NetBIOS session. */ server->with_rfc1001 = true; @@ -957,7 +957,7 @@ dequeue_mid(struct mid_q_entry *mid, bool malformed) #ifdef CONFIG_CIFS_STATS2 mid->when_received = jiffies; #endif - spin_lock(&mid->server->mid_lock); + spin_lock(&mid->server->mid_queue_lock); if (!malformed) mid->mid_state = MID_RESPONSE_RECEIVED; else @@ -966,13 +966,13 @@ dequeue_mid(struct mid_q_entry *mid, bool malformed) * Trying to handle/dequeue a mid after the send_recv() * function has finished processing it is a bug. */ - if (mid->mid_flags & MID_DELETED) { - spin_unlock(&mid->server->mid_lock); + if (mid->deleted_from_q == true) { + spin_unlock(&mid->server->mid_queue_lock); pr_warn_once("trying to dequeue a deleted mid\n"); } else { list_del_init(&mid->qhead); - mid->mid_flags |= MID_DELETED; - spin_unlock(&mid->server->mid_lock); + mid->deleted_from_q = true; + spin_unlock(&mid->server->mid_queue_lock); } } @@ -1101,16 +1101,16 @@ clean_demultiplex_info(struct TCP_Server_Info *server) struct list_head *tmp, *tmp2; LIST_HEAD(dispose_list); - spin_lock(&server->mid_lock); + spin_lock(&server->mid_queue_lock); list_for_each_safe(tmp, tmp2, &server->pending_mid_q) { mid_entry = list_entry(tmp, struct mid_q_entry, qhead); cifs_dbg(FYI, "Clearing mid %llu\n", mid_entry->mid); kref_get(&mid_entry->refcount); mid_entry->mid_state = MID_SHUTDOWN; list_move(&mid_entry->qhead, &dispose_list); - mid_entry->mid_flags |= MID_DELETED; + mid_entry->deleted_from_q = true; } - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); /* now walk dispose list and issue callbacks */ list_for_each_safe(tmp, tmp2, &dispose_list) { @@ -1242,7 +1242,7 @@ smb2_add_credits_from_hdr(char *buffer, struct TCP_Server_Info *server) spin_unlock(&server->req_lock); wake_up(&server->request_q); - trace_smb3_hdr_credits(server->CurrentMid, + trace_smb3_hdr_credits(server->current_mid, server->conn_id, server->hostname, scredits, le16_to_cpu(shdr->CreditRequest), in_flight); cifs_server_dbg(FYI, "%s: added %u credits total=%d\n", @@ -1822,7 +1822,8 @@ cifs_get_tcp_session(struct smb3_fs_context *ctx, tcp_ses->compression.requested = ctx->compress; spin_lock_init(&tcp_ses->req_lock); spin_lock_init(&tcp_ses->srv_lock); - spin_lock_init(&tcp_ses->mid_lock); + spin_lock_init(&tcp_ses->mid_queue_lock); + spin_lock_init(&tcp_ses->mid_counter_lock); INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); INIT_LIST_HEAD(&tcp_ses->smb_ses_list); INIT_DELAYED_WORK(&tcp_ses->echo, cifs_echo_request); diff --git a/fs/smb/client/fs_context.c b/fs/smb/client/fs_context.c index 3f34bb07997b..072383899e81 100644 --- a/fs/smb/client/fs_context.c +++ b/fs/smb/client/fs_context.c @@ -1652,6 +1652,7 @@ static int smb3_fs_context_parse_param(struct fs_context *fc, pr_warn_once("conflicting posix mount options specified\n"); ctx->linux_ext = 1; ctx->no_linux_ext = 0; + ctx->nonativesocket = 1; /* POSIX mounts use NFS style reparse points */ } break; case Opt_nocase: @@ -1829,24 +1830,6 @@ static int smb3_fs_context_parse_param(struct fs_context *fc, return -EINVAL; } -enum cifs_symlink_type get_cifs_symlink_type(struct cifs_sb_info *cifs_sb) -{ - if (cifs_sb->ctx->symlink_type == CIFS_SYMLINK_TYPE_DEFAULT) { - if (cifs_sb->ctx->mfsymlinks) - return CIFS_SYMLINK_TYPE_MFSYMLINKS; - else if (cifs_sb->ctx->sfu_emul) - return CIFS_SYMLINK_TYPE_SFU; - else if (cifs_sb->ctx->linux_ext && !cifs_sb->ctx->no_linux_ext) - return CIFS_SYMLINK_TYPE_UNIX; - else if (cifs_sb->ctx->reparse_type != CIFS_REPARSE_TYPE_NONE) - return CIFS_SYMLINK_TYPE_NATIVE; - else - return CIFS_SYMLINK_TYPE_NONE; - } else { - return cifs_sb->ctx->symlink_type; - } -} - int smb3_init_fs_context(struct fs_context *fc) { struct smb3_fs_context *ctx; diff --git a/fs/smb/client/fs_context.h b/fs/smb/client/fs_context.h index 9e83302ce4b8..b0fec6b9a23b 100644 --- a/fs/smb/client/fs_context.h +++ b/fs/smb/client/fs_context.h @@ -341,7 +341,23 @@ struct smb3_fs_context { extern const struct fs_parameter_spec smb3_fs_parameters[]; -extern enum cifs_symlink_type get_cifs_symlink_type(struct cifs_sb_info *cifs_sb); +static inline enum cifs_symlink_type cifs_symlink_type(struct cifs_sb_info *cifs_sb) +{ + bool posix = cifs_sb_master_tcon(cifs_sb)->posix_extensions; + + if (cifs_sb->ctx->symlink_type != CIFS_SYMLINK_TYPE_DEFAULT) + return cifs_sb->ctx->symlink_type; + + if (cifs_sb->ctx->mfsymlinks) + return CIFS_SYMLINK_TYPE_MFSYMLINKS; + else if (cifs_sb->ctx->sfu_emul) + return CIFS_SYMLINK_TYPE_SFU; + else if (cifs_sb->ctx->linux_ext && !cifs_sb->ctx->no_linux_ext) + return posix ? CIFS_SYMLINK_TYPE_NATIVE : CIFS_SYMLINK_TYPE_UNIX; + else if (cifs_sb->ctx->reparse_type != CIFS_REPARSE_TYPE_NONE) + return CIFS_SYMLINK_TYPE_NATIVE; + return CIFS_SYMLINK_TYPE_NONE; +} extern int smb3_init_fs_context(struct fs_context *fc); extern void smb3_cleanup_fs_context_contents(struct smb3_fs_context *ctx); diff --git a/fs/smb/client/link.c b/fs/smb/client/link.c index 2ecd705e9e8c..fe80e711cd75 100644 --- a/fs/smb/client/link.c +++ b/fs/smb/client/link.c @@ -605,14 +605,7 @@ cifs_symlink(struct mnt_idmap *idmap, struct inode *inode, /* BB what if DFS and this volume is on different share? BB */ rc = -EOPNOTSUPP; - switch (get_cifs_symlink_type(cifs_sb)) { - case CIFS_SYMLINK_TYPE_DEFAULT: - /* should not happen, get_cifs_symlink_type() resolves the default */ - break; - - case CIFS_SYMLINK_TYPE_NONE: - break; - + switch (cifs_symlink_type(cifs_sb)) { case CIFS_SYMLINK_TYPE_UNIX: #ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY if (pTcon->unix_ext) { @@ -642,12 +635,14 @@ cifs_symlink(struct mnt_idmap *idmap, struct inode *inode, case CIFS_SYMLINK_TYPE_NATIVE: case CIFS_SYMLINK_TYPE_NFS: case CIFS_SYMLINK_TYPE_WSL: - if (le32_to_cpu(pTcon->fsAttrInfo.Attributes) & FILE_SUPPORTS_REPARSE_POINTS) { + if (CIFS_REPARSE_SUPPORT(pTcon)) { rc = create_reparse_symlink(xid, inode, direntry, pTcon, full_path, symname); goto symlink_exit; } break; + default: + break; } if (rc == 0) { diff --git a/fs/smb/client/reparse.c b/fs/smb/client/reparse.c index 33c1d970747c..7869cec58f52 100644 --- a/fs/smb/client/reparse.c +++ b/fs/smb/client/reparse.c @@ -38,7 +38,7 @@ int create_reparse_symlink(const unsigned int xid, struct inode *inode, struct dentry *dentry, struct cifs_tcon *tcon, const char *full_path, const char *symname) { - switch (get_cifs_symlink_type(CIFS_SB(inode->i_sb))) { + switch (cifs_symlink_type(CIFS_SB(inode->i_sb))) { case CIFS_SYMLINK_TYPE_NATIVE: return create_native_symlink(xid, inode, dentry, tcon, full_path, symname); case CIFS_SYMLINK_TYPE_NFS: diff --git a/fs/smb/client/smb1ops.c b/fs/smb/client/smb1ops.c index e364b6515af3..893a1ea8c000 100644 --- a/fs/smb/client/smb1ops.c +++ b/fs/smb/client/smb1ops.c @@ -95,17 +95,17 @@ cifs_find_mid(struct TCP_Server_Info *server, char *buffer) struct smb_hdr *buf = (struct smb_hdr *)buffer; struct mid_q_entry *mid; - spin_lock(&server->mid_lock); + spin_lock(&server->mid_queue_lock); list_for_each_entry(mid, &server->pending_mid_q, qhead) { if (compare_mid(mid->mid, buf) && mid->mid_state == MID_REQUEST_SUBMITTED && le16_to_cpu(mid->command) == buf->Command) { kref_get(&mid->refcount); - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); return mid; } } - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); return NULL; } @@ -169,10 +169,9 @@ cifs_get_next_mid(struct TCP_Server_Info *server) __u16 last_mid, cur_mid; bool collision, reconnect = false; - spin_lock(&server->mid_lock); - + spin_lock(&server->mid_counter_lock); /* mid is 16 bit only for CIFS/SMB */ - cur_mid = (__u16)((server->CurrentMid) & 0xffff); + cur_mid = (__u16)((server->current_mid) & 0xffff); /* we do not want to loop forever */ last_mid = cur_mid; cur_mid++; @@ -198,6 +197,7 @@ cifs_get_next_mid(struct TCP_Server_Info *server) cur_mid++; num_mids = 0; + spin_lock(&server->mid_queue_lock); list_for_each_entry(mid_entry, &server->pending_mid_q, qhead) { ++num_mids; if (mid_entry->mid == cur_mid && @@ -207,6 +207,7 @@ cifs_get_next_mid(struct TCP_Server_Info *server) break; } } + spin_unlock(&server->mid_queue_lock); /* * if we have more than 32k mids in the list, then something @@ -223,12 +224,12 @@ cifs_get_next_mid(struct TCP_Server_Info *server) if (!collision) { mid = (__u64)cur_mid; - server->CurrentMid = mid; + server->current_mid = mid; break; } cur_mid++; } - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_counter_lock); if (reconnect) { cifs_signal_cifsd_for_reconnect(server, false); @@ -1272,7 +1273,7 @@ cifs_make_node(unsigned int xid, struct inode *inode, */ return cifs_sfu_make_node(xid, inode, dentry, tcon, full_path, mode, dev); - } else if (le32_to_cpu(tcon->fsAttrInfo.Attributes) & FILE_SUPPORTS_REPARSE_POINTS) { + } else if (CIFS_REPARSE_SUPPORT(tcon)) { /* * mknod via reparse points requires server support for * storing reparse points, which is available since diff --git a/fs/smb/client/smb2inode.c b/fs/smb/client/smb2inode.c index 69d251726c02..2a0316c514e4 100644 --- a/fs/smb/client/smb2inode.c +++ b/fs/smb/client/smb2inode.c @@ -1346,9 +1346,8 @@ struct inode *smb2_create_reparse_inode(struct cifs_open_info_data *data, * attempt to create reparse point. This will prevent creating unusable * empty object on the server. */ - if (!(le32_to_cpu(tcon->fsAttrInfo.Attributes) & FILE_SUPPORTS_REPARSE_POINTS)) - if (!tcon->posix_extensions) - return ERR_PTR(-EOPNOTSUPP); + if (!CIFS_REPARSE_SUPPORT(tcon)) + return ERR_PTR(-EOPNOTSUPP); oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, SYNCHRONIZE | DELETE | diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c index 1b4a31894f43..ad8947434b71 100644 --- a/fs/smb/client/smb2ops.c +++ b/fs/smb/client/smb2ops.c @@ -91,7 +91,7 @@ smb2_add_credits(struct TCP_Server_Info *server, if (*val > 65000) { *val = 65000; /* Don't get near 64K credits, avoid srv bugs */ pr_warn_once("server overflowed SMB3 credits\n"); - trace_smb3_overflow_credits(server->CurrentMid, + trace_smb3_overflow_credits(server->current_mid, server->conn_id, server->hostname, *val, add, server->in_flight); } @@ -136,7 +136,7 @@ smb2_add_credits(struct TCP_Server_Info *server, wake_up(&server->request_q); if (reconnect_detected) { - trace_smb3_reconnect_detected(server->CurrentMid, + trace_smb3_reconnect_detected(server->current_mid, server->conn_id, server->hostname, scredits, add, in_flight); cifs_dbg(FYI, "trying to put %d credits from the old server instance %d\n", @@ -144,7 +144,7 @@ smb2_add_credits(struct TCP_Server_Info *server, } if (reconnect_with_invalid_credits) { - trace_smb3_reconnect_with_invalid_credits(server->CurrentMid, + trace_smb3_reconnect_with_invalid_credits(server->current_mid, server->conn_id, server->hostname, scredits, add, in_flight); cifs_dbg(FYI, "Negotiate operation when server credits is non-zero. Optype: %d, server credits: %d, credits added: %d\n", optype, scredits, add); @@ -176,7 +176,7 @@ smb2_add_credits(struct TCP_Server_Info *server, break; } - trace_smb3_add_credits(server->CurrentMid, + trace_smb3_add_credits(server->current_mid, server->conn_id, server->hostname, scredits, add, in_flight); cifs_dbg(FYI, "%s: added %u credits total=%d\n", __func__, add, scredits); } @@ -203,7 +203,7 @@ smb2_set_credits(struct TCP_Server_Info *server, const int val) in_flight = server->in_flight; spin_unlock(&server->req_lock); - trace_smb3_set_credits(server->CurrentMid, + trace_smb3_set_credits(server->current_mid, server->conn_id, server->hostname, scredits, val, in_flight); cifs_dbg(FYI, "%s: set %u credits\n", __func__, val); @@ -288,7 +288,7 @@ smb2_wait_mtu_credits(struct TCP_Server_Info *server, size_t size, in_flight = server->in_flight; spin_unlock(&server->req_lock); - trace_smb3_wait_credits(server->CurrentMid, + trace_smb3_wait_credits(server->current_mid, server->conn_id, server->hostname, scredits, -(credits->value), in_flight); cifs_dbg(FYI, "%s: removed %u credits total=%d\n", __func__, credits->value, scredits); @@ -316,7 +316,7 @@ smb2_adjust_credits(struct TCP_Server_Info *server, server->credits, server->in_flight, new_val - credits->value, cifs_trace_rw_credits_no_adjust_up); - trace_smb3_too_many_credits(server->CurrentMid, + trace_smb3_too_many_credits(server->current_mid, server->conn_id, server->hostname, 0, credits->value - new_val, 0); cifs_server_dbg(VFS, "R=%x[%x] request has less credits (%d) than required (%d)", subreq->rreq->debug_id, subreq->subreq.debug_index, @@ -338,7 +338,7 @@ smb2_adjust_credits(struct TCP_Server_Info *server, server->credits, server->in_flight, new_val - credits->value, cifs_trace_rw_credits_old_session); - trace_smb3_reconnect_detected(server->CurrentMid, + trace_smb3_reconnect_detected(server->current_mid, server->conn_id, server->hostname, scredits, credits->value - new_val, in_flight); cifs_server_dbg(VFS, "R=%x[%x] trying to return %d credits to old session\n", @@ -358,7 +358,7 @@ smb2_adjust_credits(struct TCP_Server_Info *server, spin_unlock(&server->req_lock); wake_up(&server->request_q); - trace_smb3_adj_credits(server->CurrentMid, + trace_smb3_adj_credits(server->current_mid, server->conn_id, server->hostname, scredits, credits->value - new_val, in_flight); cifs_dbg(FYI, "%s: adjust added %u credits total=%d\n", @@ -374,19 +374,19 @@ smb2_get_next_mid(struct TCP_Server_Info *server) { __u64 mid; /* for SMB2 we need the current value */ - spin_lock(&server->mid_lock); - mid = server->CurrentMid++; - spin_unlock(&server->mid_lock); + spin_lock(&server->mid_counter_lock); + mid = server->current_mid++; + spin_unlock(&server->mid_counter_lock); return mid; } static void smb2_revert_current_mid(struct TCP_Server_Info *server, const unsigned int val) { - spin_lock(&server->mid_lock); - if (server->CurrentMid >= val) - server->CurrentMid -= val; - spin_unlock(&server->mid_lock); + spin_lock(&server->mid_counter_lock); + if (server->current_mid >= val) + server->current_mid -= val; + spin_unlock(&server->mid_counter_lock); } static struct mid_q_entry * @@ -401,7 +401,7 @@ __smb2_find_mid(struct TCP_Server_Info *server, char *buf, bool dequeue) return NULL; } - spin_lock(&server->mid_lock); + spin_lock(&server->mid_queue_lock); list_for_each_entry(mid, &server->pending_mid_q, qhead) { if ((mid->mid == wire_mid) && (mid->mid_state == MID_REQUEST_SUBMITTED) && @@ -409,13 +409,13 @@ __smb2_find_mid(struct TCP_Server_Info *server, char *buf, bool dequeue) kref_get(&mid->refcount); if (dequeue) { list_del_init(&mid->qhead); - mid->mid_flags |= MID_DELETED; + mid->deleted_from_q = true; } - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); return mid; } } - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); return NULL; } @@ -460,9 +460,9 @@ smb2_negotiate(const unsigned int xid, { int rc; - spin_lock(&server->mid_lock); - server->CurrentMid = 0; - spin_unlock(&server->mid_lock); + spin_lock(&server->mid_counter_lock); + server->current_mid = 0; + spin_unlock(&server->mid_counter_lock); rc = SMB2_negotiate(xid, ses, server); return rc; } @@ -2498,7 +2498,7 @@ smb2_is_status_pending(char *buf, struct TCP_Server_Info *server) spin_unlock(&server->req_lock); wake_up(&server->request_q); - trace_smb3_pend_credits(server->CurrentMid, + trace_smb3_pend_credits(server->current_mid, server->conn_id, server->hostname, scredits, le16_to_cpu(shdr->CreditRequest), in_flight); cifs_dbg(FYI, "%s: status pending add %u credits total=%d\n", @@ -4809,18 +4809,18 @@ static void smb2_decrypt_offload(struct work_struct *work) } else { spin_lock(&dw->server->srv_lock); if (dw->server->tcpStatus == CifsNeedReconnect) { - spin_lock(&dw->server->mid_lock); + spin_lock(&dw->server->mid_queue_lock); mid->mid_state = MID_RETRY_NEEDED; - spin_unlock(&dw->server->mid_lock); + spin_unlock(&dw->server->mid_queue_lock); spin_unlock(&dw->server->srv_lock); mid->callback(mid); } else { - spin_lock(&dw->server->mid_lock); + spin_lock(&dw->server->mid_queue_lock); mid->mid_state = MID_REQUEST_SUBMITTED; - mid->mid_flags &= ~(MID_DELETED); + mid->deleted_from_q = false; list_add_tail(&mid->qhead, &dw->server->pending_mid_q); - spin_unlock(&dw->server->mid_lock); + spin_unlock(&dw->server->mid_queue_lock); spin_unlock(&dw->server->srv_lock); } } @@ -5260,10 +5260,9 @@ static int smb2_make_node(unsigned int xid, struct inode *inode, if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) { rc = cifs_sfu_make_node(xid, inode, dentry, tcon, full_path, mode, dev); - } else if ((le32_to_cpu(tcon->fsAttrInfo.Attributes) & FILE_SUPPORTS_REPARSE_POINTS) - || (tcon->posix_extensions)) { + } else if (CIFS_REPARSE_SUPPORT(tcon)) { rc = mknod_reparse(xid, inode, dentry, tcon, - full_path, mode, dev); + full_path, mode, dev); } return rc; } diff --git a/fs/smb/client/smb2transport.c b/fs/smb/client/smb2transport.c index 475b36c27f65..ff9ef7fcd010 100644 --- a/fs/smb/client/smb2transport.c +++ b/fs/smb/client/smb2transport.c @@ -840,9 +840,9 @@ smb2_get_mid_entry(struct cifs_ses *ses, struct TCP_Server_Info *server, *mid = smb2_mid_entry_alloc(shdr, server); if (*mid == NULL) return -ENOMEM; - spin_lock(&server->mid_lock); + spin_lock(&server->mid_queue_lock); list_add_tail(&(*mid)->qhead, &server->pending_mid_q); - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); return 0; } diff --git a/fs/smb/client/smbdirect.c b/fs/smb/client/smbdirect.c index 754e94a0e07f..c628e91c328b 100644 --- a/fs/smb/client/smbdirect.c +++ b/fs/smb/client/smbdirect.c @@ -13,27 +13,23 @@ #include "cifsproto.h" #include "smb2proto.h" -static struct smbd_response *get_empty_queue_buffer( - struct smbd_connection *info); -static struct smbd_response *get_receive_buffer( +static struct smbdirect_recv_io *get_receive_buffer( struct smbd_connection *info); static void put_receive_buffer( struct smbd_connection *info, - struct smbd_response *response); + struct smbdirect_recv_io *response); static int allocate_receive_buffers(struct smbd_connection *info, int num_buf); static void destroy_receive_buffers(struct smbd_connection *info); -static void put_empty_packet( - struct smbd_connection *info, struct smbd_response *response); static void enqueue_reassembly( struct smbd_connection *info, - struct smbd_response *response, int data_length); -static struct smbd_response *_get_first_reassembly( + struct smbdirect_recv_io *response, int data_length); +static struct smbdirect_recv_io *_get_first_reassembly( struct smbd_connection *info); static int smbd_post_recv( struct smbd_connection *info, - struct smbd_response *response); + struct smbdirect_recv_io *response); static int smbd_post_send_empty(struct smbd_connection *info); @@ -182,9 +178,10 @@ static int smbd_conn_upcall( { struct smbd_connection *info = id->context; struct smbdirect_socket *sc = &info->socket; + const char *event_name = rdma_event_msg(event->event); - log_rdma_event(INFO, "event=%d status=%d\n", - event->event, event->status); + log_rdma_event(INFO, "event=%s status=%d\n", + event_name, event->status); switch (event->event) { case RDMA_CM_EVENT_ADDR_RESOLVED: @@ -194,45 +191,50 @@ static int smbd_conn_upcall( break; case RDMA_CM_EVENT_ADDR_ERROR: + log_rdma_event(ERR, "connecting failed event=%s\n", event_name); info->ri_rc = -EHOSTUNREACH; complete(&info->ri_done); break; case RDMA_CM_EVENT_ROUTE_ERROR: + log_rdma_event(ERR, "connecting failed event=%s\n", event_name); info->ri_rc = -ENETUNREACH; complete(&info->ri_done); break; case RDMA_CM_EVENT_ESTABLISHED: - log_rdma_event(INFO, "connected event=%d\n", event->event); + log_rdma_event(INFO, "connected event=%s\n", event_name); sc->status = SMBDIRECT_SOCKET_CONNECTED; - wake_up_interruptible(&info->conn_wait); + wake_up_interruptible(&info->status_wait); break; case RDMA_CM_EVENT_CONNECT_ERROR: case RDMA_CM_EVENT_UNREACHABLE: case RDMA_CM_EVENT_REJECTED: - log_rdma_event(INFO, "connecting failed event=%d\n", event->event); + log_rdma_event(ERR, "connecting failed event=%s\n", event_name); sc->status = SMBDIRECT_SOCKET_DISCONNECTED; - wake_up_interruptible(&info->conn_wait); + wake_up_interruptible(&info->status_wait); break; case RDMA_CM_EVENT_DEVICE_REMOVAL: case RDMA_CM_EVENT_DISCONNECTED: /* This happens when we fail the negotiation */ if (sc->status == SMBDIRECT_SOCKET_NEGOTIATE_FAILED) { + log_rdma_event(ERR, "event=%s during negotiation\n", event_name); sc->status = SMBDIRECT_SOCKET_DISCONNECTED; - wake_up(&info->conn_wait); + wake_up(&info->status_wait); break; } sc->status = SMBDIRECT_SOCKET_DISCONNECTED; - wake_up_interruptible(&info->disconn_wait); - wake_up_interruptible(&info->wait_reassembly_queue); + wake_up_interruptible(&info->status_wait); + wake_up_interruptible(&sc->recv_io.reassembly.wait_queue); wake_up_interruptible_all(&info->wait_send_queue); break; default: + log_rdma_event(ERR, "unexpected event=%s status=%d\n", + event_name, event->status); break; } @@ -259,12 +261,12 @@ smbd_qp_async_error_upcall(struct ib_event *event, void *context) } } -static inline void *smbd_request_payload(struct smbd_request *request) +static inline void *smbdirect_send_io_payload(struct smbdirect_send_io *request) { return (void *)request->packet; } -static inline void *smbd_response_payload(struct smbd_response *response) +static inline void *smbdirect_recv_io_payload(struct smbdirect_recv_io *response) { return (void *)response->packet; } @@ -273,32 +275,35 @@ static inline void *smbd_response_payload(struct smbd_response *response) static void send_done(struct ib_cq *cq, struct ib_wc *wc) { int i; - struct smbd_request *request = - container_of(wc->wr_cqe, struct smbd_request, cqe); - struct smbd_connection *info = request->info; - struct smbdirect_socket *sc = &info->socket; + struct smbdirect_send_io *request = + container_of(wc->wr_cqe, struct smbdirect_send_io, cqe); + struct smbdirect_socket *sc = request->socket; + struct smbd_connection *info = + container_of(sc, struct smbd_connection, socket); - log_rdma_send(INFO, "smbd_request 0x%p completed wc->status=%d\n", + log_rdma_send(INFO, "smbdirect_send_io 0x%p completed wc->status=%d\n", request, wc->status); - if (wc->status != IB_WC_SUCCESS || wc->opcode != IB_WC_SEND) { - log_rdma_send(ERR, "wc->status=%d wc->opcode=%d\n", - wc->status, wc->opcode); - smbd_disconnect_rdma_connection(request->info); - } - for (i = 0; i < request->num_sge; i++) ib_dma_unmap_single(sc->ib.dev, request->sge[i].addr, request->sge[i].length, DMA_TO_DEVICE); - if (atomic_dec_and_test(&request->info->send_pending)) - wake_up(&request->info->wait_send_pending); + if (wc->status != IB_WC_SUCCESS || wc->opcode != IB_WC_SEND) { + log_rdma_send(ERR, "wc->status=%d wc->opcode=%d\n", + wc->status, wc->opcode); + mempool_free(request, sc->send_io.mem.pool); + smbd_disconnect_rdma_connection(info); + return; + } - wake_up(&request->info->wait_post_send); + if (atomic_dec_and_test(&info->send_pending)) + wake_up(&info->wait_send_pending); + + wake_up(&info->wait_post_send); - mempool_free(request, request->info->request_mempool); + mempool_free(request, sc->send_io.mem.pool); } static void dump_smbdirect_negotiate_resp(struct smbdirect_negotiate_resp *resp) @@ -317,12 +322,13 @@ static void dump_smbdirect_negotiate_resp(struct smbdirect_negotiate_resp *resp) * return value: true if negotiation is a success, false if failed */ static bool process_negotiation_response( - struct smbd_response *response, int packet_length) + struct smbdirect_recv_io *response, int packet_length) { - struct smbd_connection *info = response->info; - struct smbdirect_socket *sc = &info->socket; + struct smbdirect_socket *sc = response->socket; + struct smbd_connection *info = + container_of(sc, struct smbd_connection, socket); struct smbdirect_socket_parameters *sp = &sc->parameters; - struct smbdirect_negotiate_resp *packet = smbd_response_payload(response); + struct smbdirect_negotiate_resp *packet = smbdirect_recv_io_payload(response); if (packet_length < sizeof(struct smbdirect_negotiate_resp)) { log_rdma_event(ERR, @@ -385,15 +391,15 @@ static bool process_negotiation_response( info->max_frmr_depth * PAGE_SIZE); info->max_frmr_depth = sp->max_read_write_size / PAGE_SIZE; + sc->recv_io.expected = SMBDIRECT_EXPECT_DATA_TRANSFER; return true; } static void smbd_post_send_credits(struct work_struct *work) { int ret = 0; - int use_receive_queue = 1; int rc; - struct smbd_response *response; + struct smbdirect_recv_io *response; struct smbd_connection *info = container_of(work, struct smbd_connection, post_send_credits_work); @@ -407,20 +413,10 @@ static void smbd_post_send_credits(struct work_struct *work) if (info->receive_credit_target > atomic_read(&info->receive_credits)) { while (true) { - if (use_receive_queue) - response = get_receive_buffer(info); - else - response = get_empty_queue_buffer(info); - if (!response) { - /* now switch to empty packet queue */ - if (use_receive_queue) { - use_receive_queue = 0; - continue; - } else - break; - } + response = get_receive_buffer(info); + if (!response) + break; - response->type = SMBD_TRANSFER_DATA; response->first_segment = false; rc = smbd_post_recv(info, response); if (rc) { @@ -454,19 +450,20 @@ static void smbd_post_send_credits(struct work_struct *work) static void recv_done(struct ib_cq *cq, struct ib_wc *wc) { struct smbdirect_data_transfer *data_transfer; - struct smbd_response *response = - container_of(wc->wr_cqe, struct smbd_response, cqe); - struct smbd_connection *info = response->info; + struct smbdirect_recv_io *response = + container_of(wc->wr_cqe, struct smbdirect_recv_io, cqe); + struct smbdirect_socket *sc = response->socket; + struct smbd_connection *info = + container_of(sc, struct smbd_connection, socket); int data_length = 0; log_rdma_recv(INFO, "response=0x%p type=%d wc status=%d wc opcode %d byte_len=%d pkey_index=%u\n", - response, response->type, wc->status, wc->opcode, + response, sc->recv_io.expected, wc->status, wc->opcode, wc->byte_len, wc->pkey_index); if (wc->status != IB_WC_SUCCESS || wc->opcode != IB_WC_RECV) { log_rdma_recv(INFO, "wc->status=%d opcode=%d\n", wc->status, wc->opcode); - smbd_disconnect_rdma_connection(info); goto error; } @@ -476,43 +473,31 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc) response->sge.length, DMA_FROM_DEVICE); - switch (response->type) { + switch (sc->recv_io.expected) { /* SMBD negotiation response */ - case SMBD_NEGOTIATE_RESP: - dump_smbdirect_negotiate_resp(smbd_response_payload(response)); - info->full_packet_received = true; + case SMBDIRECT_EXPECT_NEGOTIATE_REP: + dump_smbdirect_negotiate_resp(smbdirect_recv_io_payload(response)); + sc->recv_io.reassembly.full_packet_received = true; info->negotiate_done = process_negotiation_response(response, wc->byte_len); + put_receive_buffer(info, response); complete(&info->negotiate_completion); - break; + return; /* SMBD data transfer packet */ - case SMBD_TRANSFER_DATA: - data_transfer = smbd_response_payload(response); + case SMBDIRECT_EXPECT_DATA_TRANSFER: + data_transfer = smbdirect_recv_io_payload(response); data_length = le32_to_cpu(data_transfer->data_length); - /* - * If this is a packet with data playload place the data in - * reassembly queue and wake up the reading thread - */ if (data_length) { - if (info->full_packet_received) + if (sc->recv_io.reassembly.full_packet_received) response->first_segment = true; if (le32_to_cpu(data_transfer->remaining_data_length)) - info->full_packet_received = false; + sc->recv_io.reassembly.full_packet_received = false; else - info->full_packet_received = true; - - enqueue_reassembly( - info, - response, - data_length); - } else - put_empty_packet(info, response); - - if (data_length) - wake_up_interruptible(&info->wait_reassembly_queue); + sc->recv_io.reassembly.full_packet_received = true; + } atomic_dec(&info->receive_credits); info->receive_credit_target = @@ -540,15 +525,31 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc) info->keep_alive_requested = KEEP_ALIVE_PENDING; } + /* + * If this is a packet with data playload place the data in + * reassembly queue and wake up the reading thread + */ + if (data_length) { + enqueue_reassembly(info, response, data_length); + wake_up_interruptible(&sc->recv_io.reassembly.wait_queue); + } else + put_receive_buffer(info, response); + return; - default: - log_rdma_recv(ERR, - "unexpected response type=%d\n", response->type); + case SMBDIRECT_EXPECT_NEGOTIATE_REQ: + /* Only server... */ + break; } + /* + * This is an internal error! + */ + log_rdma_recv(ERR, "unexpected response type=%d\n", sc->recv_io.expected); + WARN_ON_ONCE(sc->recv_io.expected != SMBDIRECT_EXPECT_DATA_TRANSFER); error: put_receive_buffer(info, response); + smbd_disconnect_rdma_connection(info); } static struct rdma_cm_id *smbd_create_id( @@ -694,16 +695,16 @@ static int smbd_post_send_negotiate_req(struct smbd_connection *info) struct smbdirect_socket_parameters *sp = &sc->parameters; struct ib_send_wr send_wr; int rc = -ENOMEM; - struct smbd_request *request; + struct smbdirect_send_io *request; struct smbdirect_negotiate_req *packet; - request = mempool_alloc(info->request_mempool, GFP_KERNEL); + request = mempool_alloc(sc->send_io.mem.pool, GFP_KERNEL); if (!request) return rc; - request->info = info; + request->socket = sc; - packet = smbd_request_payload(request); + packet = smbdirect_send_io_payload(request); packet->min_version = cpu_to_le16(SMBDIRECT_V1); packet->max_version = cpu_to_le16(SMBDIRECT_V1); packet->reserved = 0; @@ -756,7 +757,7 @@ static int smbd_post_send_negotiate_req(struct smbd_connection *info) smbd_disconnect_rdma_connection(info); dma_mapping_failed: - mempool_free(request, info->request_mempool); + mempool_free(request, sc->send_io.mem.pool); return rc; } @@ -800,7 +801,7 @@ static int manage_keep_alive_before_sending(struct smbd_connection *info) /* Post the send request */ static int smbd_post_send(struct smbd_connection *info, - struct smbd_request *request) + struct smbdirect_send_io *request) { struct smbdirect_socket *sc = &info->socket; struct smbdirect_socket_parameters *sp = &sc->parameters; @@ -849,7 +850,7 @@ static int smbd_post_send_iter(struct smbd_connection *info, int i, rc; int header_length; int data_length; - struct smbd_request *request; + struct smbdirect_send_io *request; struct smbdirect_data_transfer *packet; int new_credits = 0; @@ -888,20 +889,20 @@ wait_send_queue: goto wait_send_queue; } - request = mempool_alloc(info->request_mempool, GFP_KERNEL); + request = mempool_alloc(sc->send_io.mem.pool, GFP_KERNEL); if (!request) { rc = -ENOMEM; goto err_alloc; } - request->info = info; + request->socket = sc; memset(request->sge, 0, sizeof(request->sge)); /* Fill in the data payload to find out how much data we can add */ if (iter) { struct smb_extract_to_rdma extract = { .nr_sge = 1, - .max_sge = SMBDIRECT_MAX_SEND_SGE, + .max_sge = SMBDIRECT_SEND_IO_MAX_SGE, .sge = request->sge, .device = sc->ib.dev, .local_dma_lkey = sc->ib.pd->local_dma_lkey, @@ -923,7 +924,7 @@ wait_send_queue: } /* Fill in the packet header */ - packet = smbd_request_payload(request); + packet = smbdirect_send_io_payload(request); packet->credits_requested = cpu_to_le16(sp->send_credit_target); new_credits = manage_credits_prior_sending(info); @@ -982,7 +983,7 @@ err_dma: request->sge[i].addr, request->sge[i].length, DMA_TO_DEVICE); - mempool_free(request, info->request_mempool); + mempool_free(request, sc->send_io.mem.pool); /* roll back receive credits and credits to be offered */ spin_lock(&info->lock_new_credits_offered); @@ -1042,7 +1043,7 @@ static int smbd_post_send_full_iter(struct smbd_connection *info, * The interaction is controlled by send/receive credit system */ static int smbd_post_recv( - struct smbd_connection *info, struct smbd_response *response) + struct smbd_connection *info, struct smbdirect_recv_io *response) { struct smbdirect_socket *sc = &info->socket; struct smbdirect_socket_parameters *sp = &sc->parameters; @@ -1069,6 +1070,7 @@ static int smbd_post_recv( if (rc) { ib_dma_unmap_single(sc->ib.dev, response->sge.addr, response->sge.length, DMA_FROM_DEVICE); + response->sge.length = 0; smbd_disconnect_rdma_connection(info); log_rdma_recv(ERR, "ib_post_recv failed rc=%d\n", rc); } @@ -1079,10 +1081,11 @@ static int smbd_post_recv( /* Perform SMBD negotiate according to [MS-SMBD] 3.1.5.2 */ static int smbd_negotiate(struct smbd_connection *info) { + struct smbdirect_socket *sc = &info->socket; int rc; - struct smbd_response *response = get_receive_buffer(info); + struct smbdirect_recv_io *response = get_receive_buffer(info); - response->type = SMBD_NEGOTIATE_RESP; + sc->recv_io.expected = SMBDIRECT_EXPECT_NEGOTIATE_REP; rc = smbd_post_recv(info, response); log_rdma_event(INFO, "smbd_post_recv rc=%d iov.addr=0x%llx iov.length=%u iov.lkey=0x%x\n", rc, response->sge.addr, @@ -1113,17 +1116,6 @@ static int smbd_negotiate(struct smbd_connection *info) return rc; } -static void put_empty_packet( - struct smbd_connection *info, struct smbd_response *response) -{ - spin_lock(&info->empty_packet_queue_lock); - list_add_tail(&response->list, &info->empty_packet_queue); - info->count_empty_packet_queue++; - spin_unlock(&info->empty_packet_queue_lock); - - queue_work(info->workqueue, &info->post_send_credits_work); -} - /* * Implement Connection.FragmentReassemblyBuffer defined in [MS-SMBD] 3.1.1.1 * This is a queue for reassembling upper layer payload and present to upper @@ -1136,12 +1128,14 @@ static void put_empty_packet( */ static void enqueue_reassembly( struct smbd_connection *info, - struct smbd_response *response, + struct smbdirect_recv_io *response, int data_length) { - spin_lock(&info->reassembly_queue_lock); - list_add_tail(&response->list, &info->reassembly_queue); - info->reassembly_queue_length++; + struct smbdirect_socket *sc = &info->socket; + + spin_lock(&sc->recv_io.reassembly.lock); + list_add_tail(&response->list, &sc->recv_io.reassembly.list); + sc->recv_io.reassembly.queue_length++; /* * Make sure reassembly_data_length is updated after list and * reassembly_queue_length are updated. On the dequeue side @@ -1149,8 +1143,8 @@ static void enqueue_reassembly( * if reassembly_queue_length and list is up to date */ virt_wmb(); - info->reassembly_data_length += data_length; - spin_unlock(&info->reassembly_queue_lock); + sc->recv_io.reassembly.data_length += data_length; + spin_unlock(&sc->recv_io.reassembly.lock); info->count_reassembly_queue++; info->count_enqueue_reassembly_queue++; } @@ -1160,34 +1154,16 @@ static void enqueue_reassembly( * Caller is responsible for locking * return value: the first entry if any, NULL if queue is empty */ -static struct smbd_response *_get_first_reassembly(struct smbd_connection *info) -{ - struct smbd_response *ret = NULL; - - if (!list_empty(&info->reassembly_queue)) { - ret = list_first_entry( - &info->reassembly_queue, - struct smbd_response, list); - } - return ret; -} - -static struct smbd_response *get_empty_queue_buffer( - struct smbd_connection *info) +static struct smbdirect_recv_io *_get_first_reassembly(struct smbd_connection *info) { - struct smbd_response *ret = NULL; - unsigned long flags; + struct smbdirect_socket *sc = &info->socket; + struct smbdirect_recv_io *ret = NULL; - spin_lock_irqsave(&info->empty_packet_queue_lock, flags); - if (!list_empty(&info->empty_packet_queue)) { + if (!list_empty(&sc->recv_io.reassembly.list)) { ret = list_first_entry( - &info->empty_packet_queue, - struct smbd_response, list); - list_del(&ret->list); - info->count_empty_packet_queue--; + &sc->recv_io.reassembly.list, + struct smbdirect_recv_io, list); } - spin_unlock_irqrestore(&info->empty_packet_queue_lock, flags); - return ret; } @@ -1197,21 +1173,22 @@ static struct smbd_response *get_empty_queue_buffer( * pre-allocated in advance. * return value: the receive buffer, NULL if none is available */ -static struct smbd_response *get_receive_buffer(struct smbd_connection *info) +static struct smbdirect_recv_io *get_receive_buffer(struct smbd_connection *info) { - struct smbd_response *ret = NULL; + struct smbdirect_socket *sc = &info->socket; + struct smbdirect_recv_io *ret = NULL; unsigned long flags; - spin_lock_irqsave(&info->receive_queue_lock, flags); - if (!list_empty(&info->receive_queue)) { + spin_lock_irqsave(&sc->recv_io.free.lock, flags); + if (!list_empty(&sc->recv_io.free.list)) { ret = list_first_entry( - &info->receive_queue, - struct smbd_response, list); + &sc->recv_io.free.list, + struct smbdirect_recv_io, list); list_del(&ret->list); info->count_receive_queue--; info->count_get_receive_buffer++; } - spin_unlock_irqrestore(&info->receive_queue_lock, flags); + spin_unlock_irqrestore(&sc->recv_io.free.lock, flags); return ret; } @@ -1223,19 +1200,24 @@ static struct smbd_response *get_receive_buffer(struct smbd_connection *info) * receive buffer is returned. */ static void put_receive_buffer( - struct smbd_connection *info, struct smbd_response *response) + struct smbd_connection *info, struct smbdirect_recv_io *response) { struct smbdirect_socket *sc = &info->socket; unsigned long flags; - ib_dma_unmap_single(sc->ib.dev, response->sge.addr, - response->sge.length, DMA_FROM_DEVICE); + if (likely(response->sge.length != 0)) { + ib_dma_unmap_single(sc->ib.dev, + response->sge.addr, + response->sge.length, + DMA_FROM_DEVICE); + response->sge.length = 0; + } - spin_lock_irqsave(&info->receive_queue_lock, flags); - list_add_tail(&response->list, &info->receive_queue); + spin_lock_irqsave(&sc->recv_io.free.lock, flags); + list_add_tail(&response->list, &sc->recv_io.free.list); info->count_receive_queue++; info->count_put_receive_buffer++; - spin_unlock_irqrestore(&info->receive_queue_lock, flags); + spin_unlock_irqrestore(&sc->recv_io.free.lock, flags); queue_work(info->workqueue, &info->post_send_credits_work); } @@ -1243,58 +1225,54 @@ static void put_receive_buffer( /* Preallocate all receive buffer on transport establishment */ static int allocate_receive_buffers(struct smbd_connection *info, int num_buf) { + struct smbdirect_socket *sc = &info->socket; + struct smbdirect_recv_io *response; int i; - struct smbd_response *response; - INIT_LIST_HEAD(&info->reassembly_queue); - spin_lock_init(&info->reassembly_queue_lock); - info->reassembly_data_length = 0; - info->reassembly_queue_length = 0; + INIT_LIST_HEAD(&sc->recv_io.reassembly.list); + spin_lock_init(&sc->recv_io.reassembly.lock); + sc->recv_io.reassembly.data_length = 0; + sc->recv_io.reassembly.queue_length = 0; - INIT_LIST_HEAD(&info->receive_queue); - spin_lock_init(&info->receive_queue_lock); + INIT_LIST_HEAD(&sc->recv_io.free.list); + spin_lock_init(&sc->recv_io.free.lock); info->count_receive_queue = 0; - INIT_LIST_HEAD(&info->empty_packet_queue); - spin_lock_init(&info->empty_packet_queue_lock); - info->count_empty_packet_queue = 0; - init_waitqueue_head(&info->wait_receive_queues); for (i = 0; i < num_buf; i++) { - response = mempool_alloc(info->response_mempool, GFP_KERNEL); + response = mempool_alloc(sc->recv_io.mem.pool, GFP_KERNEL); if (!response) goto allocate_failed; - response->info = info; - list_add_tail(&response->list, &info->receive_queue); + response->socket = sc; + response->sge.length = 0; + list_add_tail(&response->list, &sc->recv_io.free.list); info->count_receive_queue++; } return 0; allocate_failed: - while (!list_empty(&info->receive_queue)) { + while (!list_empty(&sc->recv_io.free.list)) { response = list_first_entry( - &info->receive_queue, - struct smbd_response, list); + &sc->recv_io.free.list, + struct smbdirect_recv_io, list); list_del(&response->list); info->count_receive_queue--; - mempool_free(response, info->response_mempool); + mempool_free(response, sc->recv_io.mem.pool); } return -ENOMEM; } static void destroy_receive_buffers(struct smbd_connection *info) { - struct smbd_response *response; + struct smbdirect_socket *sc = &info->socket; + struct smbdirect_recv_io *response; while ((response = get_receive_buffer(info))) - mempool_free(response, info->response_mempool); - - while ((response = get_empty_queue_buffer(info))) - mempool_free(response, info->response_mempool); + mempool_free(response, sc->recv_io.mem.pool); } /* Implement idle connection timer [MS-SMBD] 3.1.6.2 */ @@ -1332,7 +1310,7 @@ void smbd_destroy(struct TCP_Server_Info *server) struct smbd_connection *info = server->smbd_conn; struct smbdirect_socket *sc; struct smbdirect_socket_parameters *sp; - struct smbd_response *response; + struct smbdirect_recv_io *response; unsigned long flags; if (!info) { @@ -1347,7 +1325,7 @@ void smbd_destroy(struct TCP_Server_Info *server) rdma_disconnect(sc->rdma.cm_id); log_rdma_event(INFO, "wait for transport being disconnected\n"); wait_event_interruptible( - info->disconn_wait, + info->status_wait, sc->status == SMBDIRECT_SOCKET_DISCONNECTED); } @@ -1366,23 +1344,22 @@ void smbd_destroy(struct TCP_Server_Info *server) /* It's not possible for upper layer to get to reassembly */ log_rdma_event(INFO, "drain the reassembly queue\n"); do { - spin_lock_irqsave(&info->reassembly_queue_lock, flags); + spin_lock_irqsave(&sc->recv_io.reassembly.lock, flags); response = _get_first_reassembly(info); if (response) { list_del(&response->list); spin_unlock_irqrestore( - &info->reassembly_queue_lock, flags); + &sc->recv_io.reassembly.lock, flags); put_receive_buffer(info, response); } else spin_unlock_irqrestore( - &info->reassembly_queue_lock, flags); + &sc->recv_io.reassembly.lock, flags); } while (response); - info->reassembly_data_length = 0; + sc->recv_io.reassembly.data_length = 0; log_rdma_event(INFO, "free receive buffers\n"); wait_event(info->wait_receive_queues, - info->count_receive_queue + info->count_empty_packet_queue - == sp->recv_credit_max); + info->count_receive_queue == sp->recv_credit_max); destroy_receive_buffers(info); /* @@ -1407,11 +1384,11 @@ void smbd_destroy(struct TCP_Server_Info *server) rdma_destroy_id(sc->rdma.cm_id); /* free mempools */ - mempool_destroy(info->request_mempool); - kmem_cache_destroy(info->request_cache); + mempool_destroy(sc->send_io.mem.pool); + kmem_cache_destroy(sc->send_io.mem.cache); - mempool_destroy(info->response_mempool); - kmem_cache_destroy(info->response_cache); + mempool_destroy(sc->recv_io.mem.pool); + kmem_cache_destroy(sc->recv_io.mem.cache); sc->status = SMBDIRECT_SOCKET_DESTROYED; @@ -1459,12 +1436,14 @@ create_conn: static void destroy_caches_and_workqueue(struct smbd_connection *info) { + struct smbdirect_socket *sc = &info->socket; + destroy_receive_buffers(info); destroy_workqueue(info->workqueue); - mempool_destroy(info->response_mempool); - kmem_cache_destroy(info->response_cache); - mempool_destroy(info->request_mempool); - kmem_cache_destroy(info->request_cache); + mempool_destroy(sc->recv_io.mem.pool); + kmem_cache_destroy(sc->recv_io.mem.cache); + mempool_destroy(sc->send_io.mem.pool); + kmem_cache_destroy(sc->send_io.mem.cache); } #define MAX_NAME_LEN 80 @@ -1478,41 +1457,41 @@ static int allocate_caches_and_workqueue(struct smbd_connection *info) if (WARN_ON_ONCE(sp->max_recv_size < sizeof(struct smbdirect_data_transfer))) return -ENOMEM; - scnprintf(name, MAX_NAME_LEN, "smbd_request_%p", info); - info->request_cache = + scnprintf(name, MAX_NAME_LEN, "smbdirect_send_io_%p", info); + sc->send_io.mem.cache = kmem_cache_create( name, - sizeof(struct smbd_request) + + sizeof(struct smbdirect_send_io) + sizeof(struct smbdirect_data_transfer), 0, SLAB_HWCACHE_ALIGN, NULL); - if (!info->request_cache) + if (!sc->send_io.mem.cache) return -ENOMEM; - info->request_mempool = + sc->send_io.mem.pool = mempool_create(sp->send_credit_target, mempool_alloc_slab, - mempool_free_slab, info->request_cache); - if (!info->request_mempool) + mempool_free_slab, sc->send_io.mem.cache); + if (!sc->send_io.mem.pool) goto out1; - scnprintf(name, MAX_NAME_LEN, "smbd_response_%p", info); + scnprintf(name, MAX_NAME_LEN, "smbdirect_recv_io_%p", info); struct kmem_cache_args response_args = { - .align = __alignof__(struct smbd_response), - .useroffset = (offsetof(struct smbd_response, packet) + + .align = __alignof__(struct smbdirect_recv_io), + .useroffset = (offsetof(struct smbdirect_recv_io, packet) + sizeof(struct smbdirect_data_transfer)), .usersize = sp->max_recv_size - sizeof(struct smbdirect_data_transfer), }; - info->response_cache = + sc->recv_io.mem.cache = kmem_cache_create(name, - sizeof(struct smbd_response) + sp->max_recv_size, + sizeof(struct smbdirect_recv_io) + sp->max_recv_size, &response_args, SLAB_HWCACHE_ALIGN); - if (!info->response_cache) + if (!sc->recv_io.mem.cache) goto out2; - info->response_mempool = + sc->recv_io.mem.pool = mempool_create(sp->recv_credit_max, mempool_alloc_slab, - mempool_free_slab, info->response_cache); - if (!info->response_mempool) + mempool_free_slab, sc->recv_io.mem.cache); + if (!sc->recv_io.mem.pool) goto out3; scnprintf(name, MAX_NAME_LEN, "smbd_%p", info); @@ -1531,13 +1510,13 @@ static int allocate_caches_and_workqueue(struct smbd_connection *info) out5: destroy_workqueue(info->workqueue); out4: - mempool_destroy(info->response_mempool); + mempool_destroy(sc->recv_io.mem.pool); out3: - kmem_cache_destroy(info->response_cache); + kmem_cache_destroy(sc->recv_io.mem.cache); out2: - mempool_destroy(info->request_mempool); + mempool_destroy(sc->send_io.mem.pool); out1: - kmem_cache_destroy(info->request_cache); + kmem_cache_destroy(sc->send_io.mem.cache); return -ENOMEM; } @@ -1593,8 +1572,8 @@ static struct smbd_connection *_smbd_get_connection( sp->max_recv_size = smbd_max_receive_size; sp->keepalive_interval_msec = smbd_keep_alive_interval * 1000; - if (sc->ib.dev->attrs.max_send_sge < SMBDIRECT_MAX_SEND_SGE || - sc->ib.dev->attrs.max_recv_sge < SMBDIRECT_MAX_RECV_SGE) { + if (sc->ib.dev->attrs.max_send_sge < SMBDIRECT_SEND_IO_MAX_SGE || + sc->ib.dev->attrs.max_recv_sge < SMBDIRECT_RECV_IO_MAX_SGE) { log_rdma_event(ERR, "device %.*s max_send_sge/max_recv_sge = %d/%d too small\n", IB_DEVICE_NAME_MAX, @@ -1625,8 +1604,8 @@ static struct smbd_connection *_smbd_get_connection( qp_attr.qp_context = info; qp_attr.cap.max_send_wr = sp->send_credit_target; qp_attr.cap.max_recv_wr = sp->recv_credit_max; - qp_attr.cap.max_send_sge = SMBDIRECT_MAX_SEND_SGE; - qp_attr.cap.max_recv_sge = SMBDIRECT_MAX_RECV_SGE; + qp_attr.cap.max_send_sge = SMBDIRECT_SEND_IO_MAX_SGE; + qp_attr.cap.max_recv_sge = SMBDIRECT_RECV_IO_MAX_SGE; qp_attr.cap.max_inline_data = 0; qp_attr.sq_sig_type = IB_SIGNAL_REQ_WR; qp_attr.qp_type = IB_QPT_RC; @@ -1671,17 +1650,18 @@ static struct smbd_connection *_smbd_get_connection( log_rdma_event(INFO, "connecting to IP %pI4 port %d\n", &addr_in->sin_addr, port); - init_waitqueue_head(&info->conn_wait); - init_waitqueue_head(&info->disconn_wait); - init_waitqueue_head(&info->wait_reassembly_queue); + init_waitqueue_head(&info->status_wait); + init_waitqueue_head(&sc->recv_io.reassembly.wait_queue); rc = rdma_connect(sc->rdma.cm_id, &conn_param); if (rc) { log_rdma_event(ERR, "rdma_connect() failed with %i\n", rc); goto rdma_connect_failed; } - wait_event_interruptible( - info->conn_wait, sc->status != SMBDIRECT_SOCKET_CONNECTING); + wait_event_interruptible_timeout( + info->status_wait, + sc->status != SMBDIRECT_SOCKET_CONNECTING, + msecs_to_jiffies(RDMA_RESOLVE_TIMEOUT)); if (sc->status != SMBDIRECT_SOCKET_CONNECTED) { log_rdma_event(ERR, "rdma_connect failed port=%d\n", port); @@ -1735,9 +1715,8 @@ negotiation_failed: cancel_delayed_work_sync(&info->idle_timer_work); destroy_caches_and_workqueue(info); sc->status = SMBDIRECT_SOCKET_NEGOTIATE_FAILED; - init_waitqueue_head(&info->conn_wait); rdma_disconnect(sc->rdma.cm_id); - wait_event(info->conn_wait, + wait_event(info->status_wait, sc->status == SMBDIRECT_SOCKET_DISCONNECTED); allocate_cache_failed: @@ -1794,7 +1773,7 @@ try_again: int smbd_recv(struct smbd_connection *info, struct msghdr *msg) { struct smbdirect_socket *sc = &info->socket; - struct smbd_response *response; + struct smbdirect_recv_io *response; struct smbdirect_data_transfer *data_transfer; size_t size = iov_iter_count(&msg->msg_iter); int to_copy, to_read, data_read, offset; @@ -1810,9 +1789,9 @@ again: * the only one reading from the front of the queue. The transport * may add more entries to the back of the queue at the same time */ - log_read(INFO, "size=%zd info->reassembly_data_length=%d\n", size, - info->reassembly_data_length); - if (info->reassembly_data_length >= size) { + log_read(INFO, "size=%zd sc->recv_io.reassembly.data_length=%d\n", size, + sc->recv_io.reassembly.data_length); + if (sc->recv_io.reassembly.data_length >= size) { int queue_length; int queue_removed = 0; @@ -1824,13 +1803,13 @@ again: * updated in SOFTIRQ as more data is received */ virt_rmb(); - queue_length = info->reassembly_queue_length; + queue_length = sc->recv_io.reassembly.queue_length; data_read = 0; to_read = size; - offset = info->first_entry_offset; + offset = sc->recv_io.reassembly.first_entry_offset; while (data_read < size) { response = _get_first_reassembly(info); - data_transfer = smbd_response_payload(response); + data_transfer = smbdirect_recv_io_payload(response); data_length = le32_to_cpu(data_transfer->data_length); remaining_data_length = le32_to_cpu( @@ -1875,10 +1854,10 @@ again: list_del(&response->list); else { spin_lock_irq( - &info->reassembly_queue_lock); + &sc->recv_io.reassembly.lock); list_del(&response->list); spin_unlock_irq( - &info->reassembly_queue_lock); + &sc->recv_io.reassembly.lock); } queue_removed++; info->count_reassembly_queue--; @@ -1897,23 +1876,23 @@ again: to_read, data_read, offset); } - spin_lock_irq(&info->reassembly_queue_lock); - info->reassembly_data_length -= data_read; - info->reassembly_queue_length -= queue_removed; - spin_unlock_irq(&info->reassembly_queue_lock); + spin_lock_irq(&sc->recv_io.reassembly.lock); + sc->recv_io.reassembly.data_length -= data_read; + sc->recv_io.reassembly.queue_length -= queue_removed; + spin_unlock_irq(&sc->recv_io.reassembly.lock); - info->first_entry_offset = offset; + sc->recv_io.reassembly.first_entry_offset = offset; log_read(INFO, "returning to thread data_read=%d reassembly_data_length=%d first_entry_offset=%d\n", - data_read, info->reassembly_data_length, - info->first_entry_offset); + data_read, sc->recv_io.reassembly.data_length, + sc->recv_io.reassembly.first_entry_offset); read_rfc1002_done: return data_read; } log_read(INFO, "wait_event on more data\n"); rc = wait_event_interruptible( - info->wait_reassembly_queue, - info->reassembly_data_length >= size || + sc->recv_io.reassembly.wait_queue, + sc->recv_io.reassembly.data_length >= size || sc->status != SMBDIRECT_SOCKET_CONNECTED); /* Don't return any data if interrupted */ if (rc) diff --git a/fs/smb/client/smbdirect.h b/fs/smb/client/smbdirect.h index 75b3f491c3ad..e45aa9ddd71d 100644 --- a/fs/smb/client/smbdirect.h +++ b/fs/smb/client/smbdirect.h @@ -33,16 +33,6 @@ enum keep_alive_status { KEEP_ALIVE_SENT, }; -enum smbd_connection_status { - SMBD_CREATED, - SMBD_CONNECTING, - SMBD_CONNECTED, - SMBD_NEGOTIATE_FAILED, - SMBD_DISCONNECTING, - SMBD_DISCONNECTED, - SMBD_DESTROYED -}; - /* * The context for the SMBDirect transport * Everything related to the transport is here. It has several logical parts @@ -57,8 +47,7 @@ struct smbd_connection { int ri_rc; struct completion ri_done; - wait_queue_head_t conn_wait; - wait_queue_head_t disconn_wait; + wait_queue_head_t status_wait; struct completion negotiate_completion; bool negotiate_done; @@ -75,7 +64,6 @@ struct smbd_connection { atomic_t send_credits; atomic_t receive_credits; int receive_credit_target; - int fragment_reassembly_remaining; /* Memory registrations */ /* Maximum number of RDMA read/write outstanding on this connection */ @@ -106,52 +94,16 @@ struct smbd_connection { wait_queue_head_t wait_post_send; /* Receive queue */ - struct list_head receive_queue; int count_receive_queue; - spinlock_t receive_queue_lock; - - struct list_head empty_packet_queue; - int count_empty_packet_queue; - spinlock_t empty_packet_queue_lock; - wait_queue_head_t wait_receive_queues; - /* Reassembly queue */ - struct list_head reassembly_queue; - spinlock_t reassembly_queue_lock; - wait_queue_head_t wait_reassembly_queue; - - /* total data length of reassembly queue */ - int reassembly_data_length; - int reassembly_queue_length; - /* the offset to first buffer in reassembly queue */ - int first_entry_offset; - bool send_immediate; wait_queue_head_t wait_send_queue; - /* - * Indicate if we have received a full packet on the connection - * This is used to identify the first SMBD packet of a assembled - * payload (SMB packet) in reassembly queue so we can return a - * RFC1002 length to upper layer to indicate the length of the SMB - * packet received - */ - bool full_packet_received; - struct workqueue_struct *workqueue; struct delayed_work idle_timer_work; - /* Memory pool for preallocating buffers */ - /* request pool for RDMA send */ - struct kmem_cache *request_cache; - mempool_t *request_mempool; - - /* response pool for RDMA receive */ - struct kmem_cache *response_cache; - mempool_t *response_mempool; - /* for debug purposes */ unsigned int count_get_receive_buffer; unsigned int count_put_receive_buffer; @@ -161,48 +113,6 @@ struct smbd_connection { unsigned int count_send_empty; }; -enum smbd_message_type { - SMBD_NEGOTIATE_RESP, - SMBD_TRANSFER_DATA, -}; - -/* Maximum number of SGEs used by smbdirect.c in any send work request */ -#define SMBDIRECT_MAX_SEND_SGE 6 - -/* The context for a SMBD request */ -struct smbd_request { - struct smbd_connection *info; - struct ib_cqe cqe; - - /* the SGE entries for this work request */ - struct ib_sge sge[SMBDIRECT_MAX_SEND_SGE]; - int num_sge; - - /* SMBD packet header follows this structure */ - u8 packet[]; -}; - -/* Maximum number of SGEs used by smbdirect.c in any receive work request */ -#define SMBDIRECT_MAX_RECV_SGE 1 - -/* The context for a SMBD response */ -struct smbd_response { - struct smbd_connection *info; - struct ib_cqe cqe; - struct ib_sge sge; - - enum smbd_message_type type; - - /* Link to receive queue or reassembly queue */ - struct list_head list; - - /* Indicate if this is the 1st packet of a payload */ - bool first_segment; - - /* SMBD packet header and payload follows this structure */ - u8 packet[]; -}; - /* Create a SMBDirect session */ struct smbd_connection *smbd_get_connection( struct TCP_Server_Info *server, struct sockaddr *dstaddr); diff --git a/fs/smb/client/transport.c b/fs/smb/client/transport.c index 191783f553ce..32d528b4dd83 100644 --- a/fs/smb/client/transport.c +++ b/fs/smb/client/transport.c @@ -30,9 +30,6 @@ #include "smbdirect.h" #include "compress.h" -/* Max number of iovectors we can use off the stack when sending requests. */ -#define CIFS_MAX_IOV_SIZE 8 - void cifs_wake_up_task(struct mid_q_entry *mid) { @@ -41,42 +38,6 @@ cifs_wake_up_task(struct mid_q_entry *mid) wake_up_process(mid->callback_data); } -static struct mid_q_entry * -alloc_mid(const struct smb_hdr *smb_buffer, struct TCP_Server_Info *server) -{ - struct mid_q_entry *temp; - - if (server == NULL) { - cifs_dbg(VFS, "%s: null TCP session\n", __func__); - return NULL; - } - - temp = mempool_alloc(cifs_mid_poolp, GFP_NOFS); - memset(temp, 0, sizeof(struct mid_q_entry)); - kref_init(&temp->refcount); - temp->mid = get_mid(smb_buffer); - temp->pid = current->pid; - temp->command = cpu_to_le16(smb_buffer->Command); - cifs_dbg(FYI, "For smb_command %d\n", smb_buffer->Command); - /* easier to use jiffies */ - /* when mid allocated can be before when sent */ - temp->when_alloc = jiffies; - temp->server = server; - - /* - * The default is for the mid to be synchronous, so the - * default callback just wakes up the current task. - */ - get_task_struct(current); - temp->creator = current; - temp->callback = cifs_wake_up_task; - temp->callback_data = current; - - atomic_inc(&mid_count); - temp->mid_state = MID_REQUEST_ALLOCATED; - return temp; -} - void __release_mid(struct kref *refcount) { struct mid_q_entry *midEntry = @@ -89,7 +50,7 @@ void __release_mid(struct kref *refcount) #endif struct TCP_Server_Info *server = midEntry->server; - if (midEntry->resp_buf && (midEntry->mid_flags & MID_WAIT_CANCELLED) && + if (midEntry->resp_buf && (midEntry->wait_cancelled) && (midEntry->mid_state == MID_RESPONSE_RECEIVED || midEntry->mid_state == MID_RESPONSE_READY) && server->ops->handle_cancelled_mid) @@ -160,12 +121,12 @@ void __release_mid(struct kref *refcount) void delete_mid(struct mid_q_entry *mid) { - spin_lock(&mid->server->mid_lock); - if (!(mid->mid_flags & MID_DELETED)) { + spin_lock(&mid->server->mid_queue_lock); + if (mid->deleted_from_q == false) { list_del_init(&mid->qhead); - mid->mid_flags |= MID_DELETED; + mid->deleted_from_q = true; } - spin_unlock(&mid->server->mid_lock); + spin_unlock(&mid->server->mid_queue_lock); release_mid(mid); } @@ -269,9 +230,8 @@ smb_rqst_len(struct TCP_Server_Info *server, struct smb_rqst *rqst) return buflen; } -static int -__smb_send_rqst(struct TCP_Server_Info *server, int num_rqst, - struct smb_rqst *rqst) +int __smb_send_rqst(struct TCP_Server_Info *server, int num_rqst, + struct smb_rqst *rqst) { int rc; struct kvec *iov; @@ -397,7 +357,7 @@ unmask: * socket so the server throws away the partial SMB */ cifs_signal_cifsd_for_reconnect(server, false); - trace_smb3_partial_send_reconnect(server->CurrentMid, + trace_smb3_partial_send_reconnect(server->current_mid, server->conn_id, server->hostname); } smbd_done: @@ -456,22 +416,6 @@ smb_send_rqst(struct TCP_Server_Info *server, int num_rqst, return rc; } -int -smb_send(struct TCP_Server_Info *server, struct smb_hdr *smb_buffer, - unsigned int smb_buf_length) -{ - struct kvec iov[2]; - struct smb_rqst rqst = { .rq_iov = iov, - .rq_nvec = 2 }; - - iov[0].iov_base = smb_buffer; - iov[0].iov_len = 4; - iov[1].iov_base = (char *)smb_buffer + 4; - iov[1].iov_len = smb_buf_length; - - return __smb_send_rqst(server, 1, &rqst); -} - static int wait_for_free_credits(struct TCP_Server_Info *server, const int num_credits, const int timeout, const int flags, @@ -509,7 +453,7 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int num_credits, in_flight = server->in_flight; spin_unlock(&server->req_lock); - trace_smb3_nblk_credits(server->CurrentMid, + trace_smb3_nblk_credits(server->current_mid, server->conn_id, server->hostname, scredits, -1, in_flight); cifs_dbg(FYI, "%s: remove %u credits total=%d\n", __func__, 1, scredits); @@ -542,7 +486,7 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int num_credits, in_flight = server->in_flight; spin_unlock(&server->req_lock); - trace_smb3_credit_timeout(server->CurrentMid, + trace_smb3_credit_timeout(server->current_mid, server->conn_id, server->hostname, scredits, num_credits, in_flight); cifs_server_dbg(VFS, "wait timed out after %d ms\n", @@ -585,7 +529,7 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int num_credits, spin_unlock(&server->req_lock); trace_smb3_credit_timeout( - server->CurrentMid, + server->current_mid, server->conn_id, server->hostname, scredits, num_credits, in_flight); cifs_server_dbg(VFS, "wait timed out after %d ms\n", @@ -615,7 +559,7 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int num_credits, in_flight = server->in_flight; spin_unlock(&server->req_lock); - trace_smb3_waitff_credits(server->CurrentMid, + trace_smb3_waitff_credits(server->current_mid, server->conn_id, server->hostname, scredits, -(num_credits), in_flight); cifs_dbg(FYI, "%s: remove %u credits total=%d\n", @@ -626,9 +570,8 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int num_credits, return 0; } -static int -wait_for_free_request(struct TCP_Server_Info *server, const int flags, - unsigned int *instance) +int wait_for_free_request(struct TCP_Server_Info *server, const int flags, + unsigned int *instance) { return wait_for_free_credits(server, 1, -1, flags, instance); @@ -666,7 +609,7 @@ wait_for_compound_request(struct TCP_Server_Info *server, int num, */ if (server->in_flight == 0) { spin_unlock(&server->req_lock); - trace_smb3_insufficient_credits(server->CurrentMid, + trace_smb3_insufficient_credits(server->current_mid, server->conn_id, server->hostname, scredits, num, in_flight); cifs_dbg(FYI, "%s: %d requests in flight, needed %d total=%d\n", @@ -690,40 +633,7 @@ cifs_wait_mtu_credits(struct TCP_Server_Info *server, size_t size, return 0; } -static int allocate_mid(struct cifs_ses *ses, struct smb_hdr *in_buf, - struct mid_q_entry **ppmidQ) -{ - spin_lock(&ses->ses_lock); - if (ses->ses_status == SES_NEW) { - if ((in_buf->Command != SMB_COM_SESSION_SETUP_ANDX) && - (in_buf->Command != SMB_COM_NEGOTIATE)) { - spin_unlock(&ses->ses_lock); - return -EAGAIN; - } - /* else ok - we are setting up session */ - } - - if (ses->ses_status == SES_EXITING) { - /* check if SMB session is bad because we are setting it up */ - if (in_buf->Command != SMB_COM_LOGOFF_ANDX) { - spin_unlock(&ses->ses_lock); - return -EAGAIN; - } - /* else ok - we are shutting down session */ - } - spin_unlock(&ses->ses_lock); - - *ppmidQ = alloc_mid(in_buf, ses->server); - if (*ppmidQ == NULL) - return -ENOMEM; - spin_lock(&ses->server->mid_lock); - list_add_tail(&(*ppmidQ)->qhead, &ses->server->pending_mid_q); - spin_unlock(&ses->server->mid_lock); - return 0; -} - -static int -wait_for_response(struct TCP_Server_Info *server, struct mid_q_entry *midQ) +int wait_for_response(struct TCP_Server_Info *server, struct mid_q_entry *midQ) { int error; @@ -737,34 +647,6 @@ wait_for_response(struct TCP_Server_Info *server, struct mid_q_entry *midQ) return 0; } -struct mid_q_entry * -cifs_setup_async_request(struct TCP_Server_Info *server, struct smb_rqst *rqst) -{ - int rc; - struct smb_hdr *hdr = (struct smb_hdr *)rqst->rq_iov[0].iov_base; - struct mid_q_entry *mid; - - if (rqst->rq_iov[0].iov_len != 4 || - rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base) - return ERR_PTR(-EIO); - - /* enable signing if server requires it */ - if (server->sign) - hdr->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; - - mid = alloc_mid(hdr, server); - if (mid == NULL) - return ERR_PTR(-ENOMEM); - - rc = cifs_sign_rqst(rqst, server, &mid->sequence_number); - if (rc) { - release_mid(mid); - return ERR_PTR(rc); - } - - return mid; -} - /* * Send a SMB request and set the callback function in the mid to handle * the result. Caller is responsible for dealing with timeouts. @@ -819,9 +701,9 @@ cifs_call_async(struct TCP_Server_Info *server, struct smb_rqst *rqst, mid->mid_state = MID_REQUEST_SUBMITTED; /* put it on the pending_mid_q */ - spin_lock(&server->mid_lock); + spin_lock(&server->mid_queue_lock); list_add_tail(&mid->qhead, &server->pending_mid_q); - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); /* * Need to store the time in mid before calling I/O. For call_async, @@ -845,45 +727,17 @@ cifs_call_async(struct TCP_Server_Info *server, struct smb_rqst *rqst, return rc; } -/* - * - * Send an SMB Request. No response info (other than return code) - * needs to be parsed. - * - * flags indicate the type of request buffer and how long to wait - * and whether to log NT STATUS code (error) before mapping it to POSIX error - * - */ -int -SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses, - char *in_buf, int flags) -{ - int rc; - struct kvec iov[1]; - struct kvec rsp_iov; - int resp_buf_type; - - iov[0].iov_base = in_buf; - iov[0].iov_len = get_rfc1002_length(in_buf) + 4; - flags |= CIFS_NO_RSP_BUF; - rc = SendReceive2(xid, ses, iov, 1, &resp_buf_type, flags, &rsp_iov); - cifs_dbg(NOISY, "SendRcvNoRsp flags %d rc %d\n", flags, rc); - - return rc; -} - -static int -cifs_sync_mid_result(struct mid_q_entry *mid, struct TCP_Server_Info *server) +int cifs_sync_mid_result(struct mid_q_entry *mid, struct TCP_Server_Info *server) { int rc = 0; cifs_dbg(FYI, "%s: cmd=%d mid=%llu state=%d\n", __func__, le16_to_cpu(mid->command), mid->mid, mid->mid_state); - spin_lock(&server->mid_lock); + spin_lock(&server->mid_queue_lock); switch (mid->mid_state) { case MID_RESPONSE_READY: - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); return rc; case MID_RETRY_NEEDED: rc = -EAGAIN; @@ -898,85 +752,23 @@ cifs_sync_mid_result(struct mid_q_entry *mid, struct TCP_Server_Info *server) rc = mid->mid_rc; break; default: - if (!(mid->mid_flags & MID_DELETED)) { + if (mid->deleted_from_q == false) { list_del_init(&mid->qhead); - mid->mid_flags |= MID_DELETED; + mid->deleted_from_q = true; } - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); cifs_server_dbg(VFS, "%s: invalid mid state mid=%llu state=%d\n", __func__, mid->mid, mid->mid_state); rc = -EIO; goto sync_mid_done; } - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); sync_mid_done: release_mid(mid); return rc; } -static inline int -send_cancel(struct TCP_Server_Info *server, struct smb_rqst *rqst, - struct mid_q_entry *mid) -{ - return server->ops->send_cancel ? - server->ops->send_cancel(server, rqst, mid) : 0; -} - -int -cifs_check_receive(struct mid_q_entry *mid, struct TCP_Server_Info *server, - bool log_error) -{ - unsigned int len = get_rfc1002_length(mid->resp_buf) + 4; - - dump_smb(mid->resp_buf, min_t(u32, 92, len)); - - /* convert the length into a more usable form */ - if (server->sign) { - struct kvec iov[2]; - int rc = 0; - struct smb_rqst rqst = { .rq_iov = iov, - .rq_nvec = 2 }; - - iov[0].iov_base = mid->resp_buf; - iov[0].iov_len = 4; - iov[1].iov_base = (char *)mid->resp_buf + 4; - iov[1].iov_len = len - 4; - /* FIXME: add code to kill session */ - rc = cifs_verify_signature(&rqst, server, - mid->sequence_number); - if (rc) - cifs_server_dbg(VFS, "SMB signature verification returned error = %d\n", - rc); - } - - /* BB special case reconnect tid and uid here? */ - return map_and_check_smb_error(mid, log_error); -} - -struct mid_q_entry * -cifs_setup_request(struct cifs_ses *ses, struct TCP_Server_Info *ignored, - struct smb_rqst *rqst) -{ - int rc; - struct smb_hdr *hdr = (struct smb_hdr *)rqst->rq_iov[0].iov_base; - struct mid_q_entry *mid; - - if (rqst->rq_iov[0].iov_len != 4 || - rqst->rq_iov[0].iov_base + 4 != rqst->rq_iov[1].iov_base) - return ERR_PTR(-EIO); - - rc = allocate_mid(ses, hdr, &mid); - if (rc) - return ERR_PTR(rc); - rc = cifs_sign_rqst(rqst, ses->server, &mid->sequence_number); - if (rc) { - delete_mid(mid); - return ERR_PTR(rc); - } - return mid; -} - static void cifs_compound_callback(struct mid_q_entry *mid) { @@ -1213,15 +1005,15 @@ compound_send_recv(const unsigned int xid, struct cifs_ses *ses, cifs_server_dbg(FYI, "Cancelling wait for mid %llu cmd: %d\n", midQ[i]->mid, le16_to_cpu(midQ[i]->command)); send_cancel(server, &rqst[i], midQ[i]); - spin_lock(&server->mid_lock); - midQ[i]->mid_flags |= MID_WAIT_CANCELLED; + spin_lock(&server->mid_queue_lock); + midQ[i]->wait_cancelled = true; if (midQ[i]->mid_state == MID_REQUEST_SUBMITTED || midQ[i]->mid_state == MID_RESPONSE_RECEIVED) { midQ[i]->callback = cifs_cancelled_callback; cancelled_mid[i] = true; credits[i].value = 0; } - spin_unlock(&server->mid_lock); + spin_unlock(&server->mid_queue_lock); } } @@ -1304,344 +1096,6 @@ cifs_send_recv(const unsigned int xid, struct cifs_ses *ses, rqst, resp_buf_type, resp_iov); } -int -SendReceive2(const unsigned int xid, struct cifs_ses *ses, - struct kvec *iov, int n_vec, int *resp_buf_type /* ret */, - const int flags, struct kvec *resp_iov) -{ - struct smb_rqst rqst; - struct kvec s_iov[CIFS_MAX_IOV_SIZE], *new_iov; - int rc; - - if (n_vec + 1 > CIFS_MAX_IOV_SIZE) { - new_iov = kmalloc_array(n_vec + 1, sizeof(struct kvec), - GFP_KERNEL); - if (!new_iov) { - /* otherwise cifs_send_recv below sets resp_buf_type */ - *resp_buf_type = CIFS_NO_BUFFER; - return -ENOMEM; - } - } else - new_iov = s_iov; - - /* 1st iov is a RFC1001 length followed by the rest of the packet */ - memcpy(new_iov + 1, iov, (sizeof(struct kvec) * n_vec)); - - new_iov[0].iov_base = new_iov[1].iov_base; - new_iov[0].iov_len = 4; - new_iov[1].iov_base += 4; - new_iov[1].iov_len -= 4; - - memset(&rqst, 0, sizeof(struct smb_rqst)); - rqst.rq_iov = new_iov; - rqst.rq_nvec = n_vec + 1; - - rc = cifs_send_recv(xid, ses, ses->server, - &rqst, resp_buf_type, flags, resp_iov); - if (n_vec + 1 > CIFS_MAX_IOV_SIZE) - kfree(new_iov); - return rc; -} - -int -SendReceive(const unsigned int xid, struct cifs_ses *ses, - struct smb_hdr *in_buf, struct smb_hdr *out_buf, - int *pbytes_returned, const int flags) -{ - int rc = 0; - struct mid_q_entry *midQ; - unsigned int len = be32_to_cpu(in_buf->smb_buf_length); - struct kvec iov = { .iov_base = in_buf, .iov_len = len }; - struct smb_rqst rqst = { .rq_iov = &iov, .rq_nvec = 1 }; - struct cifs_credits credits = { .value = 1, .instance = 0 }; - struct TCP_Server_Info *server; - - if (ses == NULL) { - cifs_dbg(VFS, "Null smb session\n"); - return -EIO; - } - server = ses->server; - if (server == NULL) { - cifs_dbg(VFS, "Null tcp session\n"); - return -EIO; - } - - spin_lock(&server->srv_lock); - if (server->tcpStatus == CifsExiting) { - spin_unlock(&server->srv_lock); - return -ENOENT; - } - spin_unlock(&server->srv_lock); - - /* Ensure that we do not send more than 50 overlapping requests - to the same server. We may make this configurable later or - use ses->maxReq */ - - if (len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) { - cifs_server_dbg(VFS, "Invalid length, greater than maximum frame, %d\n", - len); - return -EIO; - } - - rc = wait_for_free_request(server, flags, &credits.instance); - if (rc) - return rc; - - /* make sure that we sign in the same order that we send on this socket - and avoid races inside tcp sendmsg code that could cause corruption - of smb data */ - - cifs_server_lock(server); - - rc = allocate_mid(ses, in_buf, &midQ); - if (rc) { - cifs_server_unlock(server); - /* Update # of requests on wire to server */ - add_credits(server, &credits, 0); - return rc; - } - - rc = cifs_sign_smb(in_buf, server, &midQ->sequence_number); - if (rc) { - cifs_server_unlock(server); - goto out; - } - - midQ->mid_state = MID_REQUEST_SUBMITTED; - - rc = smb_send(server, in_buf, len); - cifs_save_when_sent(midQ); - - if (rc < 0) - server->sequence_number -= 2; - - cifs_server_unlock(server); - - if (rc < 0) - goto out; - - rc = wait_for_response(server, midQ); - if (rc != 0) { - send_cancel(server, &rqst, midQ); - spin_lock(&server->mid_lock); - if (midQ->mid_state == MID_REQUEST_SUBMITTED || - midQ->mid_state == MID_RESPONSE_RECEIVED) { - /* no longer considered to be "in-flight" */ - midQ->callback = release_mid; - spin_unlock(&server->mid_lock); - add_credits(server, &credits, 0); - return rc; - } - spin_unlock(&server->mid_lock); - } - - rc = cifs_sync_mid_result(midQ, server); - if (rc != 0) { - add_credits(server, &credits, 0); - return rc; - } - - if (!midQ->resp_buf || !out_buf || - midQ->mid_state != MID_RESPONSE_READY) { - rc = -EIO; - cifs_server_dbg(VFS, "Bad MID state?\n"); - goto out; - } - - *pbytes_returned = get_rfc1002_length(midQ->resp_buf); - memcpy(out_buf, midQ->resp_buf, *pbytes_returned + 4); - rc = cifs_check_receive(midQ, server, 0); -out: - delete_mid(midQ); - add_credits(server, &credits, 0); - - return rc; -} - -/* We send a LOCKINGX_CANCEL_LOCK to cause the Windows - blocking lock to return. */ - -static int -send_lock_cancel(const unsigned int xid, struct cifs_tcon *tcon, - struct smb_hdr *in_buf, - struct smb_hdr *out_buf) -{ - int bytes_returned; - struct cifs_ses *ses = tcon->ses; - LOCK_REQ *pSMB = (LOCK_REQ *)in_buf; - - /* We just modify the current in_buf to change - the type of lock from LOCKING_ANDX_SHARED_LOCK - or LOCKING_ANDX_EXCLUSIVE_LOCK to - LOCKING_ANDX_CANCEL_LOCK. */ - - pSMB->LockType = LOCKING_ANDX_CANCEL_LOCK|LOCKING_ANDX_LARGE_FILES; - pSMB->Timeout = 0; - pSMB->hdr.Mid = get_next_mid(ses->server); - - return SendReceive(xid, ses, in_buf, out_buf, - &bytes_returned, 0); -} - -int -SendReceiveBlockingLock(const unsigned int xid, struct cifs_tcon *tcon, - struct smb_hdr *in_buf, struct smb_hdr *out_buf, - int *pbytes_returned) -{ - int rc = 0; - int rstart = 0; - struct mid_q_entry *midQ; - struct cifs_ses *ses; - unsigned int len = be32_to_cpu(in_buf->smb_buf_length); - struct kvec iov = { .iov_base = in_buf, .iov_len = len }; - struct smb_rqst rqst = { .rq_iov = &iov, .rq_nvec = 1 }; - unsigned int instance; - struct TCP_Server_Info *server; - - if (tcon == NULL || tcon->ses == NULL) { - cifs_dbg(VFS, "Null smb session\n"); - return -EIO; - } - ses = tcon->ses; - server = ses->server; - - if (server == NULL) { - cifs_dbg(VFS, "Null tcp session\n"); - return -EIO; - } - - spin_lock(&server->srv_lock); - if (server->tcpStatus == CifsExiting) { - spin_unlock(&server->srv_lock); - return -ENOENT; - } - spin_unlock(&server->srv_lock); - - /* Ensure that we do not send more than 50 overlapping requests - to the same server. We may make this configurable later or - use ses->maxReq */ - - if (len > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) { - cifs_tcon_dbg(VFS, "Invalid length, greater than maximum frame, %d\n", - len); - return -EIO; - } - - rc = wait_for_free_request(server, CIFS_BLOCKING_OP, &instance); - if (rc) - return rc; - - /* make sure that we sign in the same order that we send on this socket - and avoid races inside tcp sendmsg code that could cause corruption - of smb data */ - - cifs_server_lock(server); - - rc = allocate_mid(ses, in_buf, &midQ); - if (rc) { - cifs_server_unlock(server); - return rc; - } - - rc = cifs_sign_smb(in_buf, server, &midQ->sequence_number); - if (rc) { - delete_mid(midQ); - cifs_server_unlock(server); - return rc; - } - - midQ->mid_state = MID_REQUEST_SUBMITTED; - rc = smb_send(server, in_buf, len); - cifs_save_when_sent(midQ); - - if (rc < 0) - server->sequence_number -= 2; - - cifs_server_unlock(server); - - if (rc < 0) { - delete_mid(midQ); - return rc; - } - - /* Wait for a reply - allow signals to interrupt. */ - rc = wait_event_interruptible(server->response_q, - (!(midQ->mid_state == MID_REQUEST_SUBMITTED || - midQ->mid_state == MID_RESPONSE_RECEIVED)) || - ((server->tcpStatus != CifsGood) && - (server->tcpStatus != CifsNew))); - - /* Were we interrupted by a signal ? */ - spin_lock(&server->srv_lock); - if ((rc == -ERESTARTSYS) && - (midQ->mid_state == MID_REQUEST_SUBMITTED || - midQ->mid_state == MID_RESPONSE_RECEIVED) && - ((server->tcpStatus == CifsGood) || - (server->tcpStatus == CifsNew))) { - spin_unlock(&server->srv_lock); - - if (in_buf->Command == SMB_COM_TRANSACTION2) { - /* POSIX lock. We send a NT_CANCEL SMB to cause the - blocking lock to return. */ - rc = send_cancel(server, &rqst, midQ); - if (rc) { - delete_mid(midQ); - return rc; - } - } else { - /* Windows lock. We send a LOCKINGX_CANCEL_LOCK - to cause the blocking lock to return. */ - - rc = send_lock_cancel(xid, tcon, in_buf, out_buf); - - /* If we get -ENOLCK back the lock may have - already been removed. Don't exit in this case. */ - if (rc && rc != -ENOLCK) { - delete_mid(midQ); - return rc; - } - } - - rc = wait_for_response(server, midQ); - if (rc) { - send_cancel(server, &rqst, midQ); - spin_lock(&server->mid_lock); - if (midQ->mid_state == MID_REQUEST_SUBMITTED || - midQ->mid_state == MID_RESPONSE_RECEIVED) { - /* no longer considered to be "in-flight" */ - midQ->callback = release_mid; - spin_unlock(&server->mid_lock); - return rc; - } - spin_unlock(&server->mid_lock); - } - - /* We got the response - restart system call. */ - rstart = 1; - spin_lock(&server->srv_lock); - } - spin_unlock(&server->srv_lock); - - rc = cifs_sync_mid_result(midQ, server); - if (rc != 0) - return rc; - - /* rcvd frame is ok */ - if (out_buf == NULL || midQ->mid_state != MID_RESPONSE_READY) { - rc = -EIO; - cifs_tcon_dbg(VFS, "Bad MID state?\n"); - goto out; - } - - *pbytes_returned = get_rfc1002_length(midQ->resp_buf); - memcpy(out_buf, midQ->resp_buf, *pbytes_returned + 4); - rc = cifs_check_receive(midQ, server, 0); -out: - delete_mid(midQ); - if (rstart && rc == -EACCES) - return -ERESTARTSYS; - return rc; -} /* * Discard any remaining data in the current SMB. To do this, we borrow the diff --git a/fs/smb/common/smbdirect/smbdirect_socket.h b/fs/smb/common/smbdirect/smbdirect_socket.h index e5b15cc44a7b..3c4a8d627aa3 100644 --- a/fs/smb/common/smbdirect/smbdirect_socket.h +++ b/fs/smb/common/smbdirect/smbdirect_socket.h @@ -38,6 +38,124 @@ struct smbdirect_socket { } ib; struct smbdirect_socket_parameters parameters; + + /* + * The state for posted send buffers + */ + struct { + /* + * Memory pools for preallocating + * smbdirect_send_io buffers + */ + struct { + struct kmem_cache *cache; + mempool_t *pool; + } mem; + } send_io; + + /* + * The state for posted receive buffers + */ + struct { + /* + * The type of PDU we are expecting + */ + enum { + SMBDIRECT_EXPECT_NEGOTIATE_REQ = 1, + SMBDIRECT_EXPECT_NEGOTIATE_REP = 2, + SMBDIRECT_EXPECT_DATA_TRANSFER = 3, + } expected; + + /* + * Memory pools for preallocating + * smbdirect_recv_io buffers + */ + struct { + struct kmem_cache *cache; + mempool_t *pool; + } mem; + + /* + * The list of free smbdirect_recv_io + * structures + */ + struct { + struct list_head list; + spinlock_t lock; + } free; + + /* + * The list of arrived non-empty smbdirect_recv_io + * structures + * + * This represents the reassembly queue. + */ + struct { + struct list_head list; + spinlock_t lock; + wait_queue_head_t wait_queue; + /* total data length of reassembly queue */ + int data_length; + int queue_length; + /* the offset to first buffer in reassembly queue */ + int first_entry_offset; + /* + * Indicate if we have received a full packet on the + * connection This is used to identify the first SMBD + * packet of a assembled payload (SMB packet) in + * reassembly queue so we can return a RFC1002 length to + * upper layer to indicate the length of the SMB packet + * received + */ + bool full_packet_received; + } reassembly; + } recv_io; +}; + +struct smbdirect_send_io { + struct smbdirect_socket *socket; + struct ib_cqe cqe; + + /* + * The SGE entries for this work request + * + * The first points to the packet header + */ +#define SMBDIRECT_SEND_IO_MAX_SGE 6 + size_t num_sge; + struct ib_sge sge[SMBDIRECT_SEND_IO_MAX_SGE]; + + /* + * Link to the list of sibling smbdirect_send_io + * messages. + */ + struct list_head sibling_list; + struct ib_send_wr wr; + + /* SMBD packet header follows this structure */ + u8 packet[]; +}; + +struct smbdirect_recv_io { + struct smbdirect_socket *socket; + struct ib_cqe cqe; + + /* + * For now we only use a single SGE + * as we have just one large buffer + * per posted recv. + */ +#define SMBDIRECT_RECV_IO_MAX_SGE 1 + struct ib_sge sge; + + /* Link to free or reassembly list */ + struct list_head list; + + /* Indicate if this is the 1st packet of a payload */ + bool first_segment; + + /* SMBD packet header and payload follows this structure */ + u8 packet[]; }; #endif /* __FS_SMB_COMMON_SMBDIRECT_SMBDIRECT_SOCKET_H__ */ diff --git a/fs/smb/server/connection.h b/fs/smb/server/connection.h index dd3e0e3f7bf0..31dd1caac1e8 100644 --- a/fs/smb/server/connection.h +++ b/fs/smb/server/connection.h @@ -46,6 +46,7 @@ struct ksmbd_conn { struct mutex srv_mutex; int status; unsigned int cli_cap; + __be32 inet_addr; char *request_buf; struct ksmbd_transport *transport; struct nls_table *local_nls; diff --git a/fs/smb/server/smb_common.c b/fs/smb/server/smb_common.c index 425c756bcfb8..b23203a1c286 100644 --- a/fs/smb/server/smb_common.c +++ b/fs/smb/server/smb_common.c @@ -515,7 +515,7 @@ int ksmbd_extract_shortname(struct ksmbd_conn *conn, const char *longname, p = strrchr(longname, '.'); if (p == longname) { /*name starts with a dot*/ - strscpy(extension, "___", strlen("___")); + strscpy(extension, "___", sizeof(extension)); } else { if (p) { p++; diff --git a/fs/smb/server/transport_rdma.c b/fs/smb/server/transport_rdma.c index c6cbe0d56e32..8d366db5f605 100644 --- a/fs/smb/server/transport_rdma.c +++ b/fs/smb/server/transport_rdma.c @@ -129,9 +129,6 @@ struct smb_direct_transport { spinlock_t recvmsg_queue_lock; struct list_head recvmsg_queue; - spinlock_t empty_recvmsg_queue_lock; - struct list_head empty_recvmsg_queue; - int send_credit_target; atomic_t send_credits; spinlock_t lock_new_recv_credits; @@ -268,40 +265,19 @@ smb_direct_recvmsg *get_free_recvmsg(struct smb_direct_transport *t) static void put_recvmsg(struct smb_direct_transport *t, struct smb_direct_recvmsg *recvmsg) { - ib_dma_unmap_single(t->cm_id->device, recvmsg->sge.addr, - recvmsg->sge.length, DMA_FROM_DEVICE); + if (likely(recvmsg->sge.length != 0)) { + ib_dma_unmap_single(t->cm_id->device, + recvmsg->sge.addr, + recvmsg->sge.length, + DMA_FROM_DEVICE); + recvmsg->sge.length = 0; + } spin_lock(&t->recvmsg_queue_lock); list_add(&recvmsg->list, &t->recvmsg_queue); spin_unlock(&t->recvmsg_queue_lock); } -static struct -smb_direct_recvmsg *get_empty_recvmsg(struct smb_direct_transport *t) -{ - struct smb_direct_recvmsg *recvmsg = NULL; - - spin_lock(&t->empty_recvmsg_queue_lock); - if (!list_empty(&t->empty_recvmsg_queue)) { - recvmsg = list_first_entry(&t->empty_recvmsg_queue, - struct smb_direct_recvmsg, list); - list_del(&recvmsg->list); - } - spin_unlock(&t->empty_recvmsg_queue_lock); - return recvmsg; -} - -static void put_empty_recvmsg(struct smb_direct_transport *t, - struct smb_direct_recvmsg *recvmsg) -{ - ib_dma_unmap_single(t->cm_id->device, recvmsg->sge.addr, - recvmsg->sge.length, DMA_FROM_DEVICE); - - spin_lock(&t->empty_recvmsg_queue_lock); - list_add_tail(&recvmsg->list, &t->empty_recvmsg_queue); - spin_unlock(&t->empty_recvmsg_queue_lock); -} - static void enqueue_reassembly(struct smb_direct_transport *t, struct smb_direct_recvmsg *recvmsg, int data_length) @@ -386,9 +362,6 @@ static struct smb_direct_transport *alloc_transport(struct rdma_cm_id *cm_id) spin_lock_init(&t->recvmsg_queue_lock); INIT_LIST_HEAD(&t->recvmsg_queue); - spin_lock_init(&t->empty_recvmsg_queue_lock); - INIT_LIST_HEAD(&t->empty_recvmsg_queue); - init_waitqueue_head(&t->wait_send_pending); atomic_set(&t->send_pending, 0); @@ -548,13 +521,13 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc) t = recvmsg->transport; if (wc->status != IB_WC_SUCCESS || wc->opcode != IB_WC_RECV) { + put_recvmsg(t, recvmsg); if (wc->status != IB_WC_WR_FLUSH_ERR) { pr_err("Recv error. status='%s (%d)' opcode=%d\n", ib_wc_status_msg(wc->status), wc->status, wc->opcode); smb_direct_disconnect_rdma_connection(t); } - put_empty_recvmsg(t, recvmsg); return; } @@ -568,7 +541,8 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc) switch (recvmsg->type) { case SMB_DIRECT_MSG_NEGOTIATE_REQ: if (wc->byte_len < sizeof(struct smb_direct_negotiate_req)) { - put_empty_recvmsg(t, recvmsg); + put_recvmsg(t, recvmsg); + smb_direct_disconnect_rdma_connection(t); return; } t->negotiation_requested = true; @@ -576,7 +550,7 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc) t->status = SMB_DIRECT_CS_CONNECTED; enqueue_reassembly(t, recvmsg, 0); wake_up_interruptible(&t->wait_status); - break; + return; case SMB_DIRECT_MSG_DATA_TRANSFER: { struct smb_direct_data_transfer *data_transfer = (struct smb_direct_data_transfer *)recvmsg->packet; @@ -585,7 +559,8 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc) if (wc->byte_len < offsetof(struct smb_direct_data_transfer, padding)) { - put_empty_recvmsg(t, recvmsg); + put_recvmsg(t, recvmsg); + smb_direct_disconnect_rdma_connection(t); return; } @@ -593,7 +568,8 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc) if (data_length) { if (wc->byte_len < sizeof(struct smb_direct_data_transfer) + (u64)data_length) { - put_empty_recvmsg(t, recvmsg); + put_recvmsg(t, recvmsg); + smb_direct_disconnect_rdma_connection(t); return; } @@ -605,16 +581,11 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc) else t->full_packet_received = true; - enqueue_reassembly(t, recvmsg, (int)data_length); - wake_up_interruptible(&t->wait_reassembly_queue); - spin_lock(&t->receive_credit_lock); receive_credits = --(t->recv_credits); avail_recvmsg_count = t->count_avail_recvmsg; spin_unlock(&t->receive_credit_lock); } else { - put_empty_recvmsg(t, recvmsg); - spin_lock(&t->receive_credit_lock); receive_credits = --(t->recv_credits); avail_recvmsg_count = ++(t->count_avail_recvmsg); @@ -636,11 +607,23 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc) if (is_receive_credit_post_required(receive_credits, avail_recvmsg_count)) mod_delayed_work(smb_direct_wq, &t->post_recv_credits_work, 0); - break; + + if (data_length) { + enqueue_reassembly(t, recvmsg, (int)data_length); + wake_up_interruptible(&t->wait_reassembly_queue); + } else + put_recvmsg(t, recvmsg); + + return; } - default: - break; } + + /* + * This is an internal error! + */ + WARN_ON_ONCE(recvmsg->type != SMB_DIRECT_MSG_DATA_TRANSFER); + put_recvmsg(t, recvmsg); + smb_direct_disconnect_rdma_connection(t); } static int smb_direct_post_recv(struct smb_direct_transport *t, @@ -670,6 +653,7 @@ static int smb_direct_post_recv(struct smb_direct_transport *t, ib_dma_unmap_single(t->cm_id->device, recvmsg->sge.addr, recvmsg->sge.length, DMA_FROM_DEVICE); + recvmsg->sge.length = 0; smb_direct_disconnect_rdma_connection(t); return ret; } @@ -811,7 +795,6 @@ static void smb_direct_post_recv_credits(struct work_struct *work) struct smb_direct_recvmsg *recvmsg; int receive_credits, credits = 0; int ret; - int use_free = 1; spin_lock(&t->receive_credit_lock); receive_credits = t->recv_credits; @@ -819,18 +802,9 @@ static void smb_direct_post_recv_credits(struct work_struct *work) if (receive_credits < t->recv_credit_target) { while (true) { - if (use_free) - recvmsg = get_free_recvmsg(t); - else - recvmsg = get_empty_recvmsg(t); - if (!recvmsg) { - if (use_free) { - use_free = 0; - continue; - } else { - break; - } - } + recvmsg = get_free_recvmsg(t); + if (!recvmsg) + break; recvmsg->type = SMB_DIRECT_MSG_DATA_TRANSFER; recvmsg->first_segment = false; @@ -1806,8 +1780,6 @@ static void smb_direct_destroy_pools(struct smb_direct_transport *t) while ((recvmsg = get_free_recvmsg(t))) mempool_free(recvmsg, t->recvmsg_mempool); - while ((recvmsg = get_empty_recvmsg(t))) - mempool_free(recvmsg, t->recvmsg_mempool); mempool_destroy(t->recvmsg_mempool); t->recvmsg_mempool = NULL; @@ -1863,6 +1835,7 @@ static int smb_direct_create_pools(struct smb_direct_transport *t) if (!recvmsg) goto err; recvmsg->transport = t; + recvmsg->sge.length = 0; list_add(&recvmsg->list, &t->recvmsg_queue); } t->count_avail_recvmsg = t->recv_credit_max; diff --git a/fs/smb/server/transport_tcp.c b/fs/smb/server/transport_tcp.c index f8c772a7cb43..b1df02e321b0 100644 --- a/fs/smb/server/transport_tcp.c +++ b/fs/smb/server/transport_tcp.c @@ -85,6 +85,7 @@ static struct tcp_transport *alloc_transport(struct socket *client_sk) return NULL; } + conn->inet_addr = inet_sk(client_sk->sk)->inet_daddr; conn->transport = KSMBD_TRANS(t); KSMBD_TRANS(t)->conn = conn; KSMBD_TRANS(t)->ops = &ksmbd_tcp_transport_ops; @@ -228,6 +229,8 @@ static int ksmbd_kthread_fn(void *p) { struct socket *client_sk = NULL; struct interface *iface = (struct interface *)p; + struct inet_sock *csk_inet; + struct ksmbd_conn *conn; int ret; while (!kthread_should_stop()) { @@ -246,6 +249,20 @@ static int ksmbd_kthread_fn(void *p) continue; } + /* + * Limits repeated connections from clients with the same IP. + */ + csk_inet = inet_sk(client_sk->sk); + down_read(&conn_list_lock); + list_for_each_entry(conn, &conn_list, conns_list) + if (csk_inet->inet_daddr == conn->inet_addr) { + ret = -EAGAIN; + break; + } + up_read(&conn_list_lock); + if (ret == -EAGAIN) + continue; + if (server_conf.max_connections && atomic_inc_return(&active_num_conn) >= server_conf.max_connections) { pr_info_ratelimited("Limit the maximum number of connections(%u)\n", |