diff options
| -rw-r--r-- | fs/smb/client/cached_dir.c | 23 | ||||
| -rw-r--r-- | fs/smb/client/cifsglob.h | 5 | ||||
| -rw-r--r-- | fs/smb/client/smb2inode.c | 33 | ||||
| -rw-r--r-- | fs/smb/client/smb2ops.c | 123 | ||||
| -rw-r--r-- | fs/smb/client/smb2pdu.c | 260 | ||||
| -rw-r--r-- | fs/smb/client/smb2proto.h | 5 |
6 files changed, 404 insertions, 45 deletions
diff --git a/fs/smb/client/cached_dir.c b/fs/smb/client/cached_dir.c index 5730c65ffb40..1daeb5714faa 100644 --- a/fs/smb/client/cached_dir.c +++ b/fs/smb/client/cached_dir.c @@ -145,21 +145,27 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, struct cached_fid *cfid; struct cached_fids *cfids; const char *npath; + int retries = 0, cur_sleep = 1; if (tcon == NULL || tcon->cfids == NULL || tcon->nohandlecache || is_smb1_server(tcon->ses->server) || (dir_cache_timeout == 0)) return -EOPNOTSUPP; ses = tcon->ses; - server = cifs_pick_channel(ses); cfids = tcon->cfids; - if (!server->ops->new_lease_key) - return -EIO; - if (cifs_sb->root == NULL) return -ENOENT; +replay_again: + /* reinitialize for possible replay */ + flags = 0; + oplock = SMB2_OPLOCK_LEVEL_II; + server = cifs_pick_channel(ses); + + if (!server->ops->new_lease_key) + return -EIO; + utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); if (!utf16_path) return -ENOMEM; @@ -268,6 +274,11 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon, */ cfid->has_lease = true; + if (retries) { + smb2_set_replay(server, &rqst[0]); + smb2_set_replay(server, &rqst[1]); + } + rc = compound_send_recv(xid, ses, server, flags, 2, rqst, resp_buftype, rsp_iov); @@ -368,6 +379,10 @@ out: } kfree(utf16_path); + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h index 4eb706e27c82..ceaf9857885d 100644 --- a/fs/smb/client/cifsglob.h +++ b/fs/smb/client/cifsglob.h @@ -50,6 +50,11 @@ #define CIFS_DEF_ACTIMEO (1 * HZ) /* + * max sleep time before retry to server + */ +#define CIFS_MAX_SLEEP 2000 + +/* * max attribute cache timeout (jiffies) - 2^30 */ #define CIFS_MAX_ACTIMEO (1 << 30) diff --git a/fs/smb/client/smb2inode.c b/fs/smb/client/smb2inode.c index a652200540c8..05818cd6d932 100644 --- a/fs/smb/client/smb2inode.c +++ b/fs/smb/client/smb2inode.c @@ -120,6 +120,14 @@ static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, unsigned int size[2]; void *data[2]; int len; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = 0; + oplock = SMB2_OPLOCK_LEVEL_NONE; + num_rqst = 0; + server = cifs_pick_channel(ses); vars = kzalloc(sizeof(*vars), GFP_ATOMIC); if (vars == NULL) @@ -127,8 +135,6 @@ static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, rqst = &vars->rqst[0]; rsp_iov = &vars->rsp_iov[0]; - server = cifs_pick_channel(ses); - if (smb3_encryption_required(tcon)) flags |= CIFS_TRANSFORM_REQ; @@ -463,15 +469,24 @@ static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, num_rqst++; if (cfile) { + if (retries) + for (i = 1; i < num_rqst - 2; i++) + smb2_set_replay(server, &rqst[i]); + rc = compound_send_recv(xid, ses, server, flags, num_rqst - 2, &rqst[1], &resp_buftype[1], &rsp_iov[1]); - } else + } else { + if (retries) + for (i = 0; i < num_rqst; i++) + smb2_set_replay(server, &rqst[i]); + rc = compound_send_recv(xid, ses, server, flags, num_rqst, rqst, resp_buftype, rsp_iov); + } finished: num_rqst = 0; @@ -620,9 +635,6 @@ finished: } SMB2_close_free(&rqst[num_rqst]); - if (cfile) - cifsFileInfo_put(cfile); - num_cmds += 2; if (out_iov && out_buftype) { memcpy(out_iov, rsp_iov, num_cmds * sizeof(*out_iov)); @@ -632,7 +644,16 @@ finished: for (i = 0; i < num_cmds; i++) free_rsp_buf(resp_buftype[i], rsp_iov[i].iov_base); } + num_cmds -= 2; /* correct num_cmds as there could be a retry */ kfree(vars); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + + if (cfile) + cifsFileInfo_put(cfile); + return rc; } diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c index 27f8caccff7f..83c898afc835 100644 --- a/fs/smb/client/smb2ops.c +++ b/fs/smb/client/smb2ops.c @@ -1108,7 +1108,7 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, { struct smb2_compound_vars *vars; struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; struct smb_rqst *rqst; struct kvec *rsp_iov; __le16 *utf16_path = NULL; @@ -1124,6 +1124,13 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, struct smb2_file_full_ea_info *ea = NULL; struct smb2_query_info_rsp *rsp; int rc, used_len = 0; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = CIFS_CP_CREATE_CLOSE_OP; + oplock = SMB2_OPLOCK_LEVEL_NONE; + server = cifs_pick_channel(ses); if (smb3_encryption_required(tcon)) flags |= CIFS_TRANSFORM_REQ; @@ -1244,6 +1251,12 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, goto sea_exit; smb2_set_related(&rqst[2]); + if (retries) { + smb2_set_replay(server, &rqst[0]); + smb2_set_replay(server, &rqst[1]); + smb2_set_replay(server, &rqst[2]); + } + rc = compound_send_recv(xid, ses, server, flags, 3, rqst, resp_buftype, rsp_iov); @@ -1260,6 +1273,11 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon, kfree(vars); out_free_path: kfree(utf16_path); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } #endif @@ -1484,7 +1502,7 @@ smb2_ioctl_query_info(const unsigned int xid, struct smb_rqst *rqst; struct kvec *rsp_iov; struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; char __user *arg = (char __user *)p; struct smb_query_info qi; struct smb_query_info __user *pqi; @@ -1501,6 +1519,13 @@ smb2_ioctl_query_info(const unsigned int xid, void *data[2]; int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR; void (*free_req1_func)(struct smb_rqst *r); + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = CIFS_CP_CREATE_CLOSE_OP; + oplock = SMB2_OPLOCK_LEVEL_NONE; + server = cifs_pick_channel(ses); vars = kzalloc(sizeof(*vars), GFP_ATOMIC); if (vars == NULL) @@ -1641,6 +1666,12 @@ smb2_ioctl_query_info(const unsigned int xid, goto free_req_1; smb2_set_related(&rqst[2]); + if (retries) { + smb2_set_replay(server, &rqst[0]); + smb2_set_replay(server, &rqst[1]); + smb2_set_replay(server, &rqst[2]); + } + rc = compound_send_recv(xid, ses, server, flags, 3, rqst, resp_buftype, rsp_iov); @@ -1701,6 +1732,11 @@ free_output_buffer: kfree(buffer); free_vars: kfree(vars); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -2227,8 +2263,14 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, struct cifs_open_parms oparms; struct smb2_query_directory_rsp *qd_rsp = NULL; struct smb2_create_rsp *op_rsp = NULL; - struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); - int retry_count = 0; + struct TCP_Server_Info *server; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = 0; + oplock = SMB2_OPLOCK_LEVEL_NONE; + server = cifs_pick_channel(tcon->ses); utf16_path = cifs_convert_path_to_utf16(path, cifs_sb); if (!utf16_path) @@ -2278,14 +2320,15 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon, smb2_set_related(&rqst[1]); -again: + if (retries) { + smb2_set_replay(server, &rqst[0]); + smb2_set_replay(server, &rqst[1]); + } + rc = compound_send_recv(xid, tcon->ses, server, flags, 2, rqst, resp_buftype, rsp_iov); - if (rc == -EAGAIN && retry_count++ < 10) - goto again; - /* If the open failed there is nothing to do */ op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base; if (op_rsp == NULL || op_rsp->hdr.Status != STATUS_SUCCESS) { @@ -2333,6 +2376,11 @@ again: SMB2_query_directory_free(&rqst[1]); free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base); free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -2458,6 +2506,22 @@ smb2_oplock_response(struct cifs_tcon *tcon, __u64 persistent_fid, } void +smb2_set_replay(struct TCP_Server_Info *server, struct smb_rqst *rqst) +{ + struct smb2_hdr *shdr; + + if (server->dialect < SMB30_PROT_ID) + return; + + shdr = (struct smb2_hdr *)(rqst->rq_iov[0].iov_base); + if (shdr == NULL) { + cifs_dbg(FYI, "shdr NULL in smb2_set_related\n"); + return; + } + shdr->Flags |= SMB2_FLAGS_REPLAY_OPERATION; +} + +void smb2_set_related(struct smb_rqst *rqst) { struct smb2_hdr *shdr; @@ -2530,6 +2594,27 @@ smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst) } /* + * helper function for exponential backoff and check if replayable + */ +bool smb2_should_replay(struct cifs_tcon *tcon, + int *pretries, + int *pcur_sleep) +{ + if (!pretries || !pcur_sleep) + return false; + + if (tcon->retry || (*pretries)++ < tcon->ses->server->retrans) { + msleep(*pcur_sleep); + (*pcur_sleep) = ((*pcur_sleep) << 1); + if ((*pcur_sleep) > CIFS_MAX_SLEEP) + (*pcur_sleep) = CIFS_MAX_SLEEP; + return true; + } + + return false; +} + +/* * Passes the query info response back to the caller on success. * Caller need to free this with free_rsp_buf(). */ @@ -2542,7 +2627,7 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, { struct smb2_compound_vars *vars; struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; int flags = CIFS_CP_CREATE_CLOSE_OP; struct smb_rqst *rqst; int resp_buftype[3]; @@ -2553,6 +2638,13 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, int rc; __le16 *utf16_path; struct cached_fid *cfid = NULL; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = CIFS_CP_CREATE_CLOSE_OP; + oplock = SMB2_OPLOCK_LEVEL_NONE; + server = cifs_pick_channel(ses); if (!path) path = ""; @@ -2633,6 +2725,14 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, goto qic_exit; smb2_set_related(&rqst[2]); + if (retries) { + if (!cfid) { + smb2_set_replay(server, &rqst[0]); + smb2_set_replay(server, &rqst[2]); + } + smb2_set_replay(server, &rqst[1]); + } + if (cfid) { rc = compound_send_recv(xid, ses, server, flags, 1, &rqst[1], @@ -2665,6 +2765,11 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon, kfree(vars); out_free_path: kfree(utf16_path); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } diff --git a/fs/smb/client/smb2pdu.c b/fs/smb/client/smb2pdu.c index 288199f0b987..f92d77099ab4 100644 --- a/fs/smb/client/smb2pdu.c +++ b/fs/smb/client/smb2pdu.c @@ -2765,7 +2765,14 @@ int smb311_posix_mkdir(const unsigned int xid, struct inode *inode, int flags = 0; unsigned int total_len; __le16 *utf16_path = NULL; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = 0; + n_iov = 2; + server = cifs_pick_channel(ses); cifs_dbg(FYI, "mkdir\n"); @@ -2869,6 +2876,10 @@ int smb311_posix_mkdir(const unsigned int xid, struct inode *inode, /* no need to inc num_remote_opens because we close it just below */ trace_smb3_posix_mkdir_enter(xid, tcon->tid, ses->Suid, full_path, CREATE_NOT_FILE, FILE_WRITE_ATTRIBUTES); + + if (retries) + smb2_set_replay(server, &rqst); + /* resource #4: response buffer */ rc = cifs_send_recv(xid, ses, server, &rqst, &resp_buftype, flags, &rsp_iov); @@ -2906,6 +2917,11 @@ err_free_req: cifs_small_buf_release(req); err_free_path: kfree(utf16_path); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -3101,12 +3117,18 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, struct smb2_create_rsp *rsp = NULL; struct cifs_tcon *tcon = oparms->tcon; struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; struct kvec iov[SMB2_CREATE_IOV_SIZE]; struct kvec rsp_iov = {NULL, 0}; int resp_buftype = CIFS_NO_BUFFER; int rc = 0; int flags = 0; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = 0; + server = cifs_pick_channel(ses); cifs_dbg(FYI, "create/open\n"); if (!ses || !server) @@ -3128,6 +3150,9 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, trace_smb3_open_enter(xid, tcon->tid, tcon->ses->Suid, oparms->path, oparms->create_options, oparms->desired_access); + if (retries) + smb2_set_replay(server, &rqst); + rc = cifs_send_recv(xid, ses, server, &rqst, &resp_buftype, flags, &rsp_iov); @@ -3181,6 +3206,11 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path, creat_exit: SMB2_open_free(&rqst); free_rsp_buf(resp_buftype, rsp); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -3305,15 +3335,7 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, int resp_buftype = CIFS_NO_BUFFER; int rc = 0; int flags = 0; - - cifs_dbg(FYI, "SMB2 IOCTL\n"); - - if (out_data != NULL) - *out_data = NULL; - - /* zero out returned data len, in case of error */ - if (plen) - *plen = 0; + int retries = 0, cur_sleep = 1; if (!tcon) return -EIO; @@ -3322,10 +3344,23 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, if (!ses) return -EIO; +replay_again: + /* reinitialize for possible replay */ + flags = 0; server = cifs_pick_channel(ses); + if (!server) return -EIO; + cifs_dbg(FYI, "SMB2 IOCTL\n"); + + if (out_data != NULL) + *out_data = NULL; + + /* zero out returned data len, in case of error */ + if (plen) + *plen = 0; + if (smb3_encryption_required(tcon)) flags |= CIFS_TRANSFORM_REQ; @@ -3340,6 +3375,9 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, if (rc) goto ioctl_exit; + if (retries) + smb2_set_replay(server, &rqst); + rc = cifs_send_recv(xid, ses, server, &rqst, &resp_buftype, flags, &rsp_iov); @@ -3409,6 +3447,11 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, ioctl_exit: SMB2_ioctl_free(&rqst); free_rsp_buf(resp_buftype, rsp); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -3480,13 +3523,20 @@ __SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, struct smb_rqst rqst; struct smb2_close_rsp *rsp = NULL; struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; struct kvec iov[1]; struct kvec rsp_iov; int resp_buftype = CIFS_NO_BUFFER; int rc = 0; int flags = 0; bool query_attrs = false; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = 0; + query_attrs = false; + server = cifs_pick_channel(ses); cifs_dbg(FYI, "Close\n"); @@ -3512,6 +3562,9 @@ __SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, if (rc) goto close_exit; + if (retries) + smb2_set_replay(server, &rqst); + rc = cifs_send_recv(xid, ses, server, &rqst, &resp_buftype, flags, &rsp_iov); rsp = (struct smb2_close_rsp *)rsp_iov.iov_base; @@ -3545,6 +3598,11 @@ close_exit: cifs_dbg(VFS, "handle cancelled close fid 0x%llx returned error %d\n", persistent_fid, tmp_rc); } + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -3675,12 +3733,19 @@ query_info(const unsigned int xid, struct cifs_tcon *tcon, struct TCP_Server_Info *server; int flags = 0; bool allocated = false; + int retries = 0, cur_sleep = 1; cifs_dbg(FYI, "Query Info\n"); if (!ses) return -EIO; + +replay_again: + /* reinitialize for possible replay */ + flags = 0; + allocated = false; server = cifs_pick_channel(ses); + if (!server) return -EIO; @@ -3702,6 +3767,9 @@ query_info(const unsigned int xid, struct cifs_tcon *tcon, trace_smb3_query_info_enter(xid, persistent_fid, tcon->tid, ses->Suid, info_class, (__u32)info_type); + if (retries) + smb2_set_replay(server, &rqst); + rc = cifs_send_recv(xid, ses, server, &rqst, &resp_buftype, flags, &rsp_iov); rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base; @@ -3744,6 +3812,11 @@ query_info(const unsigned int xid, struct cifs_tcon *tcon, qinf_exit: SMB2_query_info_free(&rqst); free_rsp_buf(resp_buftype, rsp); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -3844,7 +3917,7 @@ SMB2_change_notify(const unsigned int xid, struct cifs_tcon *tcon, u32 *plen /* returned data len */) { struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; struct smb_rqst rqst; struct smb2_change_notify_rsp *smb_rsp; struct kvec iov[1]; @@ -3852,6 +3925,12 @@ SMB2_change_notify(const unsigned int xid, struct cifs_tcon *tcon, int resp_buftype = CIFS_NO_BUFFER; int flags = 0; int rc = 0; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = 0; + server = cifs_pick_channel(ses); cifs_dbg(FYI, "change notify\n"); if (!ses || !server) @@ -3876,6 +3955,10 @@ SMB2_change_notify(const unsigned int xid, struct cifs_tcon *tcon, trace_smb3_notify_enter(xid, persistent_fid, tcon->tid, ses->Suid, (u8)watch_tree, completion_filter); + + if (retries) + smb2_set_replay(server, &rqst); + rc = cifs_send_recv(xid, ses, server, &rqst, &resp_buftype, flags, &rsp_iov); @@ -3910,6 +3993,11 @@ SMB2_change_notify(const unsigned int xid, struct cifs_tcon *tcon, if (rqst.rq_iov) cifs_small_buf_release(rqst.rq_iov[0].iov_base); /* request */ free_rsp_buf(resp_buftype, rsp_iov.iov_base); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -4152,10 +4240,16 @@ SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, struct smb_rqst rqst; struct kvec iov[1]; struct kvec rsp_iov = {NULL, 0}; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; int resp_buftype = CIFS_NO_BUFFER; int flags = 0; int rc = 0; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = 0; + server = cifs_pick_channel(ses); cifs_dbg(FYI, "flush\n"); if (!ses || !(ses->server)) @@ -4175,6 +4269,10 @@ SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, goto flush_exit; trace_smb3_flush_enter(xid, persistent_fid, tcon->tid, ses->Suid); + + if (retries) + smb2_set_replay(server, &rqst); + rc = cifs_send_recv(xid, ses, server, &rqst, &resp_buftype, flags, &rsp_iov); @@ -4189,6 +4287,11 @@ SMB2_flush(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid, flush_exit: SMB2_flush_free(&rqst); free_rsp_buf(resp_buftype, rsp_iov.iov_base); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -4826,18 +4929,21 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, int flags = 0; unsigned int total_len; struct TCP_Server_Info *server; + int retries = 0, cur_sleep = 1; +replay_again: + /* reinitialize for possible replay */ + flags = 0; *nbytes = 0; - - if (n_vec < 1) - return rc; - if (!io_parms->server) io_parms->server = cifs_pick_channel(io_parms->tcon->ses); server = io_parms->server; if (server == NULL) return -ECONNABORTED; + if (n_vec < 1) + return rc; + rc = smb2_plain_req_init(SMB2_WRITE, io_parms->tcon, server, (void **) &req, &total_len); if (rc) @@ -4871,6 +4977,9 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, rqst.rq_iov = iov; rqst.rq_nvec = n_vec + 1; + if (retries) + smb2_set_replay(server, &rqst); + rc = cifs_send_recv(xid, io_parms->tcon->ses, server, &rqst, &resp_buftype, flags, &rsp_iov); @@ -4895,6 +5004,11 @@ SMB2_write(const unsigned int xid, struct cifs_io_parms *io_parms, cifs_small_buf_release(req); free_rsp_buf(resp_buftype, rsp); + + if (is_replayable_error(rc) && + smb2_should_replay(io_parms->tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -5206,8 +5320,14 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, struct kvec rsp_iov; int rc = 0; struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; int flags = 0; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = 0; + server = cifs_pick_channel(ses); if (!ses || !(ses->server)) return -EIO; @@ -5227,6 +5347,9 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, if (rc) goto qdir_exit; + if (retries) + smb2_set_replay(server, &rqst); + rc = cifs_send_recv(xid, ses, server, &rqst, &resp_buftype, flags, &rsp_iov); rsp = (struct smb2_query_directory_rsp *)rsp_iov.iov_base; @@ -5261,6 +5384,11 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon, qdir_exit: SMB2_query_directory_free(&rqst); free_rsp_buf(resp_buftype, rsp); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -5327,8 +5455,14 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon, int rc = 0; int resp_buftype; struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; int flags = 0; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = 0; + server = cifs_pick_channel(ses); if (!ses || !server) return -EIO; @@ -5356,6 +5490,8 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon, return rc; } + if (retries) + smb2_set_replay(server, &rqst); rc = cifs_send_recv(xid, ses, server, &rqst, &resp_buftype, flags, @@ -5371,6 +5507,11 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon, free_rsp_buf(resp_buftype, rsp); kfree(iov); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -5423,12 +5564,18 @@ SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon, int rc; struct smb2_oplock_break *req = NULL; struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; int flags = CIFS_OBREAK_OP; unsigned int total_len; struct kvec iov[1]; struct kvec rsp_iov; int resp_buf_type; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = CIFS_OBREAK_OP; + server = cifs_pick_channel(ses); cifs_dbg(FYI, "SMB2_oplock_break\n"); rc = smb2_plain_req_init(SMB2_OPLOCK_BREAK, tcon, server, @@ -5453,15 +5600,21 @@ SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon, rqst.rq_iov = iov; rqst.rq_nvec = 1; + if (retries) + smb2_set_replay(server, &rqst); + rc = cifs_send_recv(xid, ses, server, &rqst, &resp_buf_type, flags, &rsp_iov); cifs_small_buf_release(req); - if (rc) { cifs_stats_fail_inc(tcon, SMB2_OPLOCK_BREAK_HE); cifs_dbg(FYI, "Send error in Oplock Break = %d\n", rc); } + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -5547,9 +5700,15 @@ SMB311_posix_qfs_info(const unsigned int xid, struct cifs_tcon *tcon, int rc = 0; int resp_buftype; struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; FILE_SYSTEM_POSIX_INFO *info = NULL; int flags = 0; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = 0; + server = cifs_pick_channel(ses); rc = build_qfs_info_req(&iov, tcon, server, FS_POSIX_INFORMATION, @@ -5565,6 +5724,9 @@ SMB311_posix_qfs_info(const unsigned int xid, struct cifs_tcon *tcon, rqst.rq_iov = &iov; rqst.rq_nvec = 1; + if (retries) + smb2_set_replay(server, &rqst); + rc = cifs_send_recv(xid, ses, server, &rqst, &resp_buftype, flags, &rsp_iov); free_qfs_info_req(&iov); @@ -5584,6 +5746,11 @@ SMB311_posix_qfs_info(const unsigned int xid, struct cifs_tcon *tcon, posix_qfsinf_exit: free_rsp_buf(resp_buftype, rsp_iov.iov_base); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -5598,9 +5765,15 @@ SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon, int rc = 0; int resp_buftype; struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; struct smb2_fs_full_size_info *info = NULL; int flags = 0; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = 0; + server = cifs_pick_channel(ses); rc = build_qfs_info_req(&iov, tcon, server, FS_FULL_SIZE_INFORMATION, @@ -5616,6 +5789,9 @@ SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon, rqst.rq_iov = &iov; rqst.rq_nvec = 1; + if (retries) + smb2_set_replay(server, &rqst); + rc = cifs_send_recv(xid, ses, server, &rqst, &resp_buftype, flags, &rsp_iov); free_qfs_info_req(&iov); @@ -5635,6 +5811,11 @@ SMB2_QFS_info(const unsigned int xid, struct cifs_tcon *tcon, qfsinf_exit: free_rsp_buf(resp_buftype, rsp_iov.iov_base); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -5649,9 +5830,15 @@ SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon, int rc = 0; int resp_buftype, max_len, min_len; struct cifs_ses *ses = tcon->ses; - struct TCP_Server_Info *server = cifs_pick_channel(ses); + struct TCP_Server_Info *server; unsigned int rsp_len, offset; int flags = 0; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = 0; + server = cifs_pick_channel(ses); if (level == FS_DEVICE_INFORMATION) { max_len = sizeof(FILE_SYSTEM_DEVICE_INFO); @@ -5683,6 +5870,9 @@ SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon, rqst.rq_iov = &iov; rqst.rq_nvec = 1; + if (retries) + smb2_set_replay(server, &rqst); + rc = cifs_send_recv(xid, ses, server, &rqst, &resp_buftype, flags, &rsp_iov); free_qfs_info_req(&iov); @@ -5720,6 +5910,11 @@ SMB2_QFS_attr(const unsigned int xid, struct cifs_tcon *tcon, qfsattr_exit: free_rsp_buf(resp_buftype, rsp_iov.iov_base); + + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } @@ -5737,7 +5932,13 @@ smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon, unsigned int count; int flags = CIFS_NO_RSP_BUF; unsigned int total_len; - struct TCP_Server_Info *server = cifs_pick_channel(tcon->ses); + struct TCP_Server_Info *server; + int retries = 0, cur_sleep = 1; + +replay_again: + /* reinitialize for possible replay */ + flags = CIFS_NO_RSP_BUF; + server = cifs_pick_channel(tcon->ses); cifs_dbg(FYI, "smb2_lockv num lock %d\n", num_lock); @@ -5768,6 +5969,9 @@ smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon, rqst.rq_iov = iov; rqst.rq_nvec = 2; + if (retries) + smb2_set_replay(server, &rqst); + rc = cifs_send_recv(xid, tcon->ses, server, &rqst, &resp_buf_type, flags, &rsp_iov); @@ -5779,6 +5983,10 @@ smb2_lockv(const unsigned int xid, struct cifs_tcon *tcon, tcon->ses->Suid, rc); } + if (is_replayable_error(rc) && + smb2_should_replay(tcon, &retries, &cur_sleep)) + goto replay_again; + return rc; } diff --git a/fs/smb/client/smb2proto.h b/fs/smb/client/smb2proto.h index 0034b537b0b3..b3069911e9dd 100644 --- a/fs/smb/client/smb2proto.h +++ b/fs/smb/client/smb2proto.h @@ -122,6 +122,11 @@ extern unsigned long smb_rqst_len(struct TCP_Server_Info *server, extern void smb2_set_next_command(struct cifs_tcon *tcon, struct smb_rqst *rqst); extern void smb2_set_related(struct smb_rqst *rqst); +extern void smb2_set_replay(struct TCP_Server_Info *server, + struct smb_rqst *rqst); +extern bool smb2_should_replay(struct cifs_tcon *tcon, + int *pretries, + int *pcur_sleep); /* * SMB2 Worker functions - most of protocol specific implementation details |