From 68e14569d7e5a1798fcbfd945022a4de86f944a0 Mon Sep 17 00:00:00 2001 From: Steve French Date: Wed, 21 Sep 2022 14:05:53 -0500 Subject: [PATCH] smb3: add dynamic trace points for tree disconnect Needed this for debugging a failing xfstest. Also change camel case for "treeName" to "tree_name" in tcon struct. Example trace output (from "trace-cmd record -e smb3_tdis*"): umount-9718 [006] ..... 5909.780244: smb3_tdis_enter: xid=206 sid=0xcf38894e tid=0x3d0b8cf8 path=\\localhost\test umount-9718 [007] ..... 5909.780878: smb3_tdis_done: xid=206 sid=0xcf38894e tid=0x3d0b8cf8 Reviewed-by: Paulo Alcantara (SUSE) Signed-off-by: Steve French --- fs/cifs/cached_dir.c | 2 +- fs/cifs/cifs_debug.c | 4 ++-- fs/cifs/cifs_debug.h | 6 +++--- fs/cifs/cifs_swn.c | 12 ++++++------ fs/cifs/cifsglob.h | 2 +- fs/cifs/connect.c | 13 +++++++------ fs/cifs/dfs_cache.c | 2 +- fs/cifs/dir.c | 8 ++++---- fs/cifs/fscache.c | 2 +- fs/cifs/inode.c | 2 +- fs/cifs/misc.c | 4 ++-- fs/cifs/smb2inode.c | 2 +- fs/cifs/smb2ops.c | 6 +++--- fs/cifs/smb2pdu.c | 16 ++++++++++------ fs/cifs/trace.h | 3 +++ 15 files changed, 46 insertions(+), 38 deletions(-) diff --git a/fs/cifs/cached_dir.c b/fs/cifs/cached_dir.c index b401339f6e73..ca8d7cf2a147 100644 --- a/fs/cifs/cached_dir.c +++ b/fs/cifs/cached_dir.c @@ -160,7 +160,7 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, if (rc == -EREMCHG) { tcon->need_reconnect = true; pr_warn_once("server share %s deleted\n", - tcon->treeName); + tcon->tree_name); } goto oshr_exit; } diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c index c05477e28cff..90850da390ae 100644 --- a/fs/cifs/cifs_debug.c +++ b/fs/cifs/cifs_debug.c @@ -87,7 +87,7 @@ static void cifs_debug_tcon(struct seq_file *m, struct cifs_tcon *tcon) { __u32 dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType); - seq_printf(m, "%s Mounts: %d ", tcon->treeName, tcon->tc_count); + seq_printf(m, "%s Mounts: %d ", tcon->tree_name, tcon->tc_count); if (tcon->nativeFileSystem) seq_printf(m, "Type: %s ", tcon->nativeFileSystem); seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x\n\tPathComponentMax: %d Status: %d", @@ -601,7 +601,7 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v) list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) { list_for_each_entry(tcon, &ses->tcon_list, tcon_list) { i++; - seq_printf(m, "\n%d) %s", i, tcon->treeName); + seq_printf(m, "\n%d) %s", i, tcon->tree_name); if (tcon->need_reconnect) seq_puts(m, "\tDISCONNECTED "); seq_printf(m, "\nSMBs: %d", diff --git a/fs/cifs/cifs_debug.h b/fs/cifs/cifs_debug.h index ee4ea2b60c0f..d44808263cfb 100644 --- a/fs/cifs/cifs_debug.h +++ b/fs/cifs/cifs_debug.h @@ -108,8 +108,8 @@ do { \ #define cifs_tcon_dbg_func(ratefunc, type, fmt, ...) \ do { \ const char *tn = ""; \ - if (tcon && tcon->treeName) \ - tn = tcon->treeName; \ + if (tcon && tcon->tree_name) \ + tn = tcon->tree_name; \ if ((type) & FYI && cifsFYI & CIFS_INFO) { \ pr_debug_ ## ratefunc("%s: %s " fmt, \ __FILE__, tn, ##__VA_ARGS__); \ @@ -150,7 +150,7 @@ do { \ #define cifs_tcon_dbg(type, fmt, ...) \ do { \ if (0) \ - pr_debug("%s " fmt, tcon->treeName, ##__VA_ARGS__); \ + pr_debug("%s " fmt, tcon->tree_name, ##__VA_ARGS__); \ } while (0) #define cifs_info(fmt, ...) \ diff --git a/fs/cifs/cifs_swn.c b/fs/cifs/cifs_swn.c index 1e4c7cc5287f..7233c6a7e6d7 100644 --- a/fs/cifs/cifs_swn.c +++ b/fs/cifs/cifs_swn.c @@ -256,23 +256,23 @@ static struct cifs_swn_reg *cifs_find_swn_reg(struct cifs_tcon *tcon) const char *share_name; const char *net_name; - net_name = extract_hostname(tcon->treeName); + net_name = extract_hostname(tcon->tree_name); if (IS_ERR(net_name)) { int ret; ret = PTR_ERR(net_name); cifs_dbg(VFS, "%s: failed to extract host name from target '%s': %d\n", - __func__, tcon->treeName, ret); + __func__, tcon->tree_name, ret); return ERR_PTR(-EINVAL); } - share_name = extract_sharename(tcon->treeName); + share_name = extract_sharename(tcon->tree_name); if (IS_ERR(share_name)) { int ret; ret = PTR_ERR(share_name); cifs_dbg(VFS, "%s: failed to extract share name from target '%s': %d\n", - __func__, tcon->treeName, ret); + __func__, tcon->tree_name, ret); kfree(net_name); return ERR_PTR(-EINVAL); } @@ -335,14 +335,14 @@ static struct cifs_swn_reg *cifs_get_swn_reg(struct cifs_tcon *tcon) goto fail; } - reg->net_name = extract_hostname(tcon->treeName); + reg->net_name = extract_hostname(tcon->tree_name); if (IS_ERR(reg->net_name)) { ret = PTR_ERR(reg->net_name); cifs_dbg(VFS, "%s: failed to extract host name from target: %d\n", __func__, ret); goto fail_idr; } - reg->share_name = extract_sharename(tcon->treeName); + reg->share_name = extract_sharename(tcon->tree_name); if (IS_ERR(reg->share_name)) { ret = PTR_ERR(reg->share_name); cifs_dbg(VFS, "%s: failed to extract share name from target: %d\n", __func__, ret); diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index ae7f571a7dba..ad606f648bdc 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -1149,7 +1149,7 @@ struct cifs_tcon { struct list_head openFileList; spinlock_t open_file_lock; /* protects list above */ struct cifs_ses *ses; /* pointer to session associated with */ - char treeName[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ + char tree_name[MAX_TREE_SIZE + 1]; /* UNC name of resource in ASCII */ char *nativeFileSystem; char *password; /* for share-level security */ __u32 tid; /* The 4 byte tree id */ diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 7ae6f2c08153..ad81d7d43eaf 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1940,7 +1940,8 @@ void cifs_put_smb_ses(struct cifs_ses *ses) spin_unlock(&ses->ses_lock); cifs_dbg(FYI, "%s: ses_count=%d\n", __func__, ses->ses_count); - cifs_dbg(FYI, "%s: ses ipc: %s\n", __func__, ses->tcon_ipc ? ses->tcon_ipc->treeName : "NONE"); + cifs_dbg(FYI, + "%s: ses ipc: %s\n", __func__, ses->tcon_ipc ? ses->tcon_ipc->tree_name : "NONE"); spin_lock(&cifs_tcp_ses_lock); if (--ses->ses_count > 0) { @@ -2293,7 +2294,7 @@ static int match_tcon(struct cifs_tcon *tcon, struct smb3_fs_context *ctx) { if (tcon->status == TID_EXITING) return 0; - if (strncmp(tcon->treeName, ctx->UNC, MAX_TREE_SIZE)) + if (strncmp(tcon->tree_name, ctx->UNC, MAX_TREE_SIZE)) return 0; if (tcon->seal != ctx->seal) return 0; @@ -3989,7 +3990,7 @@ CIFSTCon(const unsigned int xid, struct cifs_ses *ses, } bcc_ptr += length + 1; bytes_left -= (length + 1); - strscpy(tcon->treeName, tree, sizeof(tcon->treeName)); + strscpy(tcon->tree_name, tree, sizeof(tcon->tree_name)); /* mostly informational -- no need to fail on error here */ kfree(tcon->nativeFileSystem); @@ -4197,7 +4198,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid) ctx->local_nls = cifs_sb->local_nls; ctx->linux_uid = fsuid; ctx->cred_uid = fsuid; - ctx->UNC = master_tcon->treeName; + ctx->UNC = master_tcon->tree_name; ctx->retry = master_tcon->retry; ctx->nocase = master_tcon->nocase; ctx->nohandlecache = master_tcon->nohandlecache; @@ -4663,7 +4664,7 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru /* If it is not dfs or there was no cached dfs referral, then reconnect to same share */ if (!server->current_fullpath || dfs_cache_noreq_find(server->current_fullpath + 1, &ref, &tl)) { - rc = ops->tree_connect(xid, tcon->ses, tcon->treeName, tcon, cifs_sb->local_nls); + rc = ops->tree_connect(xid, tcon->ses, tcon->tree_name, tcon, cifs_sb->local_nls); goto out; } @@ -4707,7 +4708,7 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru tcon->status = TID_IN_TCON; spin_unlock(&tcon->tc_lock); - rc = ops->tree_connect(xid, tcon->ses, tcon->treeName, tcon, nlsc); + rc = ops->tree_connect(xid, tcon->ses, tcon->tree_name, tcon, nlsc); if (rc) { spin_lock(&tcon->tc_lock); if (tcon->status == TID_IN_TCON) diff --git a/fs/cifs/dfs_cache.c b/fs/cifs/dfs_cache.c index a9b6c3eba6de..e70915ad7541 100644 --- a/fs/cifs/dfs_cache.c +++ b/fs/cifs/dfs_cache.c @@ -98,7 +98,7 @@ static struct cifs_ses *find_ipc_from_server_path(struct cifs_ses **ses, const c get_ipc_unc(path, unc, sizeof(unc)); for (; *ses; ses++) { - if (!strcasecmp(unc, (*ses)->tcon_ipc->treeName)) + if (!strcasecmp(unc, (*ses)->tcon_ipc->tree_name)) return *ses; } return ERR_PTR(-ENOENT); diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index 08f7392716e2..f58869306309 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -50,7 +50,7 @@ cifs_build_path_to_root(struct smb3_fs_context *ctx, struct cifs_sb_info *cifs_s } if (add_treename) - dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1); + dfsplen = strnlen(tcon->tree_name, MAX_TREE_SIZE + 1); else dfsplen = 0; @@ -59,7 +59,7 @@ cifs_build_path_to_root(struct smb3_fs_context *ctx, struct cifs_sb_info *cifs_s return full_path; if (dfsplen) - memcpy(full_path, tcon->treeName, dfsplen); + memcpy(full_path, tcon->tree_name, dfsplen); full_path[dfsplen] = CIFS_DIR_SEP(cifs_sb); memcpy(full_path + dfsplen + 1, ctx->prepath, pplen); convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb)); @@ -93,7 +93,7 @@ build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page, return ERR_PTR(-ENOMEM); if (prefix) - dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1); + dfsplen = strnlen(tcon->tree_name, MAX_TREE_SIZE + 1); else dfsplen = 0; @@ -123,7 +123,7 @@ build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page, } if (dfsplen) { s -= dfsplen; - memcpy(s, tcon->treeName, dfsplen); + memcpy(s, tcon->tree_name, dfsplen); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) { int i; for (i = 0; i < dfsplen; i++) { diff --git a/fs/cifs/fscache.c b/fs/cifs/fscache.c index 23ef56f55ce5..a1751b956318 100644 --- a/fs/cifs/fscache.c +++ b/fs/cifs/fscache.c @@ -45,7 +45,7 @@ int cifs_fscache_get_super_cookie(struct cifs_tcon *tcon) memset(&key, 0, sizeof(key)); - sharename = extract_sharename(tcon->treeName); + sharename = extract_sharename(tcon->tree_name); if (IS_ERR(sharename)) { cifs_dbg(FYI, "%s: couldn't extract sharename\n", __func__); return -EINVAL; diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index bac08c20f559..3784d3a88053 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -913,7 +913,7 @@ cifs_set_fattr_ino(int xid, } else { /* make an ino by hashing the UNC */ fattr->cf_flags |= CIFS_FATTR_FAKE_ROOT_INO; - fattr->cf_uniqueid = simple_hashstr(tcon->treeName); + fattr->cf_uniqueid = simple_hashstr(tcon->tree_name); } } } diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index c6679398fff9..f42812e4c2cd 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -525,7 +525,7 @@ cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb) cifs_sb->mnt_cifs_flags &= ~CIFS_MOUNT_SERVER_INUM; cifs_sb->mnt_cifs_serverino_autodisabled = true; cifs_dbg(VFS, "Autodisabling the use of server inode numbers on %s\n", - tcon ? tcon->treeName : "new server"); + tcon ? tcon->tree_name : "new server"); cifs_dbg(VFS, "The server doesn't seem to support them properly or the files might be on different servers (DFS)\n"); cifs_dbg(VFS, "Hardlinks will not be recognized on this mount. Consider mounting with the \"noserverino\" option to silence this message.\n"); @@ -1328,7 +1328,7 @@ int cifs_dfs_query_info_nonascii_quirk(const unsigned int xid, char *treename, *dfspath, sep; int treenamelen, linkpathlen, rc; - treename = tcon->treeName; + treename = tcon->tree_name; /* MS-DFSC: All paths in REQ_GET_DFS_REFERRAL and RESP_GET_DFS_REFERRAL * messages MUST be encoded with exactly one leading backslash, not two * leading backslashes. diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c index b83f59051b26..bb3e3d5a0cda 100644 --- a/fs/cifs/smb2inode.c +++ b/fs/cifs/smb2inode.c @@ -379,7 +379,7 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, SMB2_open_free(&rqst[0]); if (rc == -EREMCHG) { - pr_warn_once("server share %s deleted\n", tcon->treeName); + pr_warn_once("server share %s deleted\n", tcon->tree_name); tcon->need_reconnect = true; } diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 421be43af425..f590a9cb6a1a 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -1327,7 +1327,7 @@ SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon, CIFSMaxBufSize, (char **)&res_key, &ret_data_len); if (rc == -EOPNOTSUPP) { - pr_warn_once("Server share %s does not support copy range\n", tcon->treeName); + pr_warn_once("Server share %s does not support copy range\n", tcon->tree_name); goto req_res_key_exit; } else if (rc) { cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc); @@ -2289,7 +2289,7 @@ smb2_is_network_name_deleted(char *buf, struct TCP_Server_Info *server) spin_unlock(&tcon->tc_lock); spin_unlock(&cifs_tcp_ses_lock); pr_warn_once("Server share %s deleted.\n", - tcon->treeName); + tcon->tree_name); return; } } @@ -2498,7 +2498,7 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, if (rc == -EREMCHG) { tcon->need_reconnect = true; pr_warn_once("server share %s deleted\n", - tcon->treeName); + tcon->tree_name); } goto qic_exit; } diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 223056097b54..90ccac18f9f3 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -1930,7 +1930,7 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree, tcon->capabilities = rsp->Capabilities; /* we keep caps little endian */ tcon->maximal_access = le32_to_cpu(rsp->MaximalAccess); tcon->tid = le32_to_cpu(rsp->hdr.Id.SyncId.TreeId); - strscpy(tcon->treeName, tree, sizeof(tcon->treeName)); + strscpy(tcon->tree_name, tree, sizeof(tcon->tree_name)); if ((rsp->Capabilities & SMB2_SHARE_CAP_DFS) && ((tcon->share_flags & SHI1005_FLAGS_DFS) == 0)) @@ -1973,6 +1973,7 @@ SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon) if (!ses || !(ses->server)) return -EIO; + trace_smb3_tdis_enter(xid, tcon->tid, ses->Suid, tcon->tree_name); spin_lock(&ses->chan_lock); if ((tcon->need_reconnect) || (CIFS_ALL_CHANS_NEED_RECONNECT(tcon->ses))) { @@ -2004,8 +2005,11 @@ SMB2_tdis(const unsigned int xid, struct cifs_tcon *tcon) rc = cifs_send_recv(xid, ses, ses->server, &rqst, &resp_buf_type, flags, &rsp_iov); cifs_small_buf_release(req); - if (rc) + if (rc) { cifs_stats_fail_inc(tcon, SMB2_TREE_DISCONNECT_HE); + trace_smb3_tdis_err(xid, tcon->tid, ses->Suid, rc); + } + trace_smb3_tdis_done(xid, tcon->tid, ses->Suid); return rc; } @@ -2674,7 +2678,7 @@ int smb311_posix_mkdir(const unsigned int xid, struct inode *inode, req->hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS; rc = alloc_path_with_tree_prefix(©_path, ©_size, &name_len, - tcon->treeName, utf16_path); + tcon->tree_name, utf16_path); if (rc) goto err_free_req; @@ -2816,7 +2820,7 @@ SMB2_open_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server, req->hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS; rc = alloc_path_with_tree_prefix(©_path, ©_size, &name_len, - tcon->treeName, path); + tcon->tree_name, path); if (rc) return rc; req->NameLength = cpu_to_le16(name_len * 2); @@ -3011,7 +3015,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, oparms->create_options, oparms->desired_access, rc); if (rc == -EREMCHG) { pr_warn_once("server share %s deleted\n", - tcon->treeName); + tcon->tree_name); tcon->need_reconnect = true; } goto creat_exit; @@ -4429,7 +4433,7 @@ smb2_writev_callback(struct mid_q_entry *mid) wdata->bytes, wdata->result); if (wdata->result == -ENOSPC) pr_warn_once("Out of space writing to %s\n", - tcon->treeName); + tcon->tree_name); } else trace_smb3_write_done(0 /* no xid */, wdata->cfile->fid.persistent_fid, diff --git a/fs/cifs/trace.h b/fs/cifs/trace.h index 6b88dc2e364f..110070ba8b04 100644 --- a/fs/cifs/trace.h +++ b/fs/cifs/trace.h @@ -372,6 +372,7 @@ DEFINE_SMB3_INF_COMPOUND_ENTER_EVENT(set_eof_enter); DEFINE_SMB3_INF_COMPOUND_ENTER_EVENT(set_info_compound_enter); DEFINE_SMB3_INF_COMPOUND_ENTER_EVENT(delete_enter); DEFINE_SMB3_INF_COMPOUND_ENTER_EVENT(mkdir_enter); +DEFINE_SMB3_INF_COMPOUND_ENTER_EVENT(tdis_enter); DECLARE_EVENT_CLASS(smb3_inf_compound_done_class, @@ -409,6 +410,7 @@ DEFINE_SMB3_INF_COMPOUND_DONE_EVENT(set_eof_done); DEFINE_SMB3_INF_COMPOUND_DONE_EVENT(set_info_compound_done); DEFINE_SMB3_INF_COMPOUND_DONE_EVENT(delete_done); DEFINE_SMB3_INF_COMPOUND_DONE_EVENT(mkdir_done); +DEFINE_SMB3_INF_COMPOUND_DONE_EVENT(tdis_done); DECLARE_EVENT_CLASS(smb3_inf_compound_err_class, @@ -451,6 +453,7 @@ DEFINE_SMB3_INF_COMPOUND_ERR_EVENT(set_eof_err); DEFINE_SMB3_INF_COMPOUND_ERR_EVENT(set_info_compound_err); DEFINE_SMB3_INF_COMPOUND_ERR_EVENT(mkdir_err); DEFINE_SMB3_INF_COMPOUND_ERR_EVENT(delete_err); +DEFINE_SMB3_INF_COMPOUND_ERR_EVENT(tdis_err); /* * For logging SMB3 Status code and Command for responses which return errors