56 inline int p9_is_proto_dotl(struct p9_client *clnt)  in p9_is_proto_dotl()  argument
58 	return clnt->proto_version == p9_proto_2000L;  in p9_is_proto_dotl()
62 inline int p9_is_proto_dotu(struct p9_client *clnt)  in p9_is_proto_dotu()  argument
64 	return clnt->proto_version == p9_proto_2000u;  in p9_is_proto_dotu()
68 int p9_show_client_options(struct seq_file *m, struct p9_client *clnt)  in p9_show_client_options()  argument
70 	if (clnt->msize != DEFAULT_MSIZE)  in p9_show_client_options()
71 		seq_printf(m, ",msize=%u", clnt->msize);  in p9_show_client_options()
72 	seq_printf(m, ",trans=%s", clnt->trans_mod->name);  in p9_show_client_options()
74 	switch (clnt->proto_version) {  in p9_show_client_options()
86 	if (clnt->trans_mod->show_options)  in p9_show_client_options()
87 		return clnt->trans_mod->show_options(m, clnt);  in p9_show_client_options()
134 static int parse_opts(char *opts, struct p9_client *clnt)  in parse_opts()  argument
143 	clnt->proto_version = p9_proto_2000L;  in parse_opts()
144 	clnt->msize = DEFAULT_MSIZE;  in parse_opts()
177 			clnt->msize = option;  in parse_opts()
188 			v9fs_put_trans(clnt->trans_mod);  in parse_opts()
189 			clnt->trans_mod = v9fs_get_trans_by_name(s);  in parse_opts()
190 			if (clnt->trans_mod == NULL) {  in parse_opts()
198 			clnt->proto_version = p9_proto_legacy;  in parse_opts()
212 				clnt->proto_version = r;  in parse_opts()
222 		v9fs_put_trans(clnt->trans_mod);  in parse_opts()
892 static struct p9_fid *p9_fid_create(struct p9_client *clnt)  in p9_fid_create()  argument
897 	p9_debug(P9_DEBUG_FID, "clnt %p\n", clnt);  in p9_fid_create()
905 	fid->clnt = clnt;  in p9_fid_create()
911 	spin_lock_irq(&clnt->lock);  in p9_fid_create()
912 	ret = idr_alloc_u32(&clnt->fids, fid, &fid->fid, P9_NOFID - 1,  in p9_fid_create()
914 	spin_unlock_irq(&clnt->lock);  in p9_fid_create()
925 	struct p9_client *clnt;  in p9_fid_destroy()  local
929 	clnt = fid->clnt;  in p9_fid_destroy()
930 	spin_lock_irqsave(&clnt->lock, flags);  in p9_fid_destroy()
931 	idr_remove(&clnt->fids, fid->fid);  in p9_fid_destroy()
932 	spin_unlock_irqrestore(&clnt->lock, flags);  in p9_fid_destroy()
1007 	struct p9_client *clnt;  in p9_client_create()  local
1011 	clnt = kmalloc(sizeof(struct p9_client), GFP_KERNEL);  in p9_client_create()
1012 	if (!clnt)  in p9_client_create()
1015 	clnt->trans_mod = NULL;  in p9_client_create()
1016 	clnt->trans = NULL;  in p9_client_create()
1017 	clnt->fcall_cache = NULL;  in p9_client_create()
1020 	memcpy(clnt->name, client_id, strlen(client_id) + 1);  in p9_client_create()
1022 	spin_lock_init(&clnt->lock);  in p9_client_create()
1023 	idr_init(&clnt->fids);  in p9_client_create()
1024 	idr_init(&clnt->reqs);  in p9_client_create()
1026 	err = parse_opts(options, clnt);  in p9_client_create()
1030 	if (!clnt->trans_mod)  in p9_client_create()
1031 		clnt->trans_mod = v9fs_get_default_trans();  in p9_client_create()
1033 	if (clnt->trans_mod == NULL) {  in p9_client_create()
1041 		 clnt, clnt->trans_mod, clnt->msize, clnt->proto_version);  in p9_client_create()
1043 	err = clnt->trans_mod->create(clnt, dev_name, options);  in p9_client_create()
1047 	if (clnt->msize > clnt->trans_mod->maxsize)  in p9_client_create()
1048 		clnt->msize = clnt->trans_mod->maxsize;  in p9_client_create()
1050 	if (clnt->msize < 4096) {  in p9_client_create()
1057 	err = p9_client_version(clnt);  in p9_client_create()
1064 	clnt->fcall_cache =  in p9_client_create()
1065 		kmem_cache_create_usercopy("9p-fcall-cache", clnt->msize,  in p9_client_create()
1067 					   clnt->msize - (P9_HDRSZ + 4),  in p9_client_create()
1070 	return clnt;  in p9_client_create()
1073 	clnt->trans_mod->close(clnt);  in p9_client_create()
1075 	v9fs_put_trans(clnt->trans_mod);  in p9_client_create()
1077 	kfree(clnt);  in p9_client_create()
1082 void p9_client_destroy(struct p9_client *clnt)  in p9_client_destroy()  argument
1087 	p9_debug(P9_DEBUG_MUX, "clnt %p\n", clnt);  in p9_client_destroy()
1089 	if (clnt->trans_mod)  in p9_client_destroy()
1090 		clnt->trans_mod->close(clnt);  in p9_client_destroy()
1092 	v9fs_put_trans(clnt->trans_mod);  in p9_client_destroy()
1094 	idr_for_each_entry(&clnt->fids, fid, id) {  in p9_client_destroy()
1099 	p9_tag_cleanup(clnt);  in p9_client_destroy()
1101 	kmem_cache_destroy(clnt->fcall_cache);  in p9_client_destroy()
1102 	kfree(clnt);  in p9_client_destroy()
1106 void p9_client_disconnect(struct p9_client *clnt)  in p9_client_disconnect()  argument
1108 	p9_debug(P9_DEBUG_9P, "clnt %p\n", clnt);  in p9_client_disconnect()
1109 	clnt->status = Disconnected;  in p9_client_disconnect()
1113 void p9_client_begin_disconnect(struct p9_client *clnt)  in p9_client_begin_disconnect()  argument
1115 	p9_debug(P9_DEBUG_9P, "clnt %p\n", clnt);  in p9_client_begin_disconnect()
1116 	clnt->status = BeginDisconnect;  in p9_client_begin_disconnect()
1120 struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,  in p9_client_attach()  argument
1131 	fid = p9_fid_create(clnt);  in p9_client_attach()
1138 	req = p9_client_rpc(clnt, P9_TATTACH, "ddss?u", fid->fid,  in p9_client_attach()
1145 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Q", &qid);  in p9_client_attach()
1147 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_attach()
1148 		p9_tag_remove(clnt, req);  in p9_client_attach()
1157 	p9_tag_remove(clnt, req);  in p9_client_attach()
1171 	struct p9_client *clnt;  in p9_client_walk()  local
1179 	clnt = oldfid->clnt;  in p9_client_walk()
1181 		fid = p9_fid_create(clnt);  in p9_client_walk()
1194 	req = p9_client_rpc(clnt, P9_TWALK, "ddT", oldfid->fid, fid->fid,  in p9_client_walk()
1201 	err = p9pdu_readf(&req->rc, clnt->proto_version, "R", &nwqids, &wqids);  in p9_client_walk()
1203 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_walk()
1204 		p9_tag_remove(clnt, req);  in p9_client_walk()
1207 	p9_tag_remove(clnt, req);  in p9_client_walk()
1246 	struct p9_client *clnt;  in p9_client_open()  local
1251 	clnt = fid->clnt;  in p9_client_open()
1253 		p9_is_proto_dotl(clnt) ? "TLOPEN" : "TOPEN", fid->fid, mode);  in p9_client_open()
1259 	if (p9_is_proto_dotl(clnt))  in p9_client_open()
1260 		req = p9_client_rpc(clnt, P9_TLOPEN, "dd", fid->fid, mode);  in p9_client_open()
1262 		req = p9_client_rpc(clnt, P9_TOPEN, "db", fid->fid, mode);  in p9_client_open()
1268 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Qd", &qid, &iounit);  in p9_client_open()
1270 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_open()
1275 		p9_is_proto_dotl(clnt) ? "RLOPEN" : "ROPEN",  qid.type,  in p9_client_open()
1283 	p9_tag_remove(clnt, req);  in p9_client_open()
1293 	struct p9_client *clnt;  in p9_client_create_dotl()  local
1301 	clnt = ofid->clnt;  in p9_client_create_dotl()
1306 	req = p9_client_rpc(clnt, P9_TLCREATE, "dsddg", ofid->fid, name, flags,  in p9_client_create_dotl()
1313 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Qd", qid, &iounit);  in p9_client_create_dotl()
1315 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_create_dotl()
1329 	p9_tag_remove(clnt, req);  in p9_client_create_dotl()
1339 	struct p9_client *clnt;  in p9_client_fcreate()  local
1347 	clnt = fid->clnt;  in p9_client_fcreate()
1352 	req = p9_client_rpc(clnt, P9_TCREATE, "dsdb?s", fid->fid, name, perm,  in p9_client_fcreate()
1359 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Qd", &qid, &iounit);  in p9_client_fcreate()
1361 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_fcreate()
1375 	p9_tag_remove(clnt, req);  in p9_client_fcreate()
1385 	struct p9_client *clnt;  in p9_client_symlink()  local
1390 	clnt = dfid->clnt;  in p9_client_symlink()
1392 	req = p9_client_rpc(clnt, P9_TSYMLINK, "dssg", dfid->fid, name, symtgt,  in p9_client_symlink()
1399 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Q", qid);  in p9_client_symlink()
1401 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_symlink()
1409 	p9_tag_remove(clnt, req);  in p9_client_symlink()
1417 	struct p9_client *clnt;  in p9_client_link()  local
1422 	clnt = dfid->clnt;  in p9_client_link()
1423 	req = p9_client_rpc(clnt, P9_TLINK, "dds", dfid->fid, oldfid->fid,  in p9_client_link()
1429 	p9_tag_remove(clnt, req);  in p9_client_link()
1437 	struct p9_client *clnt;  in p9_client_fsync()  local
1443 	clnt = fid->clnt;  in p9_client_fsync()
1445 	req = p9_client_rpc(clnt, P9_TFSYNC, "dd", fid->fid, datasync);  in p9_client_fsync()
1453 	p9_tag_remove(clnt, req);  in p9_client_fsync()
1463 	struct p9_client *clnt;  in p9_client_clunk()  local
1480 	clnt = fid->clnt;  in p9_client_clunk()
1482 	req = p9_client_rpc(clnt, P9_TCLUNK, "d", fid->fid);  in p9_client_clunk()
1490 	p9_tag_remove(clnt, req);  in p9_client_clunk()
1509 	struct p9_client *clnt;  in p9_client_remove()  local
1514 	clnt = fid->clnt;  in p9_client_remove()
1516 	req = p9_client_rpc(clnt, P9_TREMOVE, "d", fid->fid);  in p9_client_remove()
1524 	p9_tag_remove(clnt, req);  in p9_client_remove()
1538 	struct p9_client *clnt;  in p9_client_unlinkat()  local
1543 	clnt = dfid->clnt;  in p9_client_unlinkat()
1544 	req = p9_client_rpc(clnt, P9_TUNLINKAT, "dsd", dfid->fid, name, flags);  in p9_client_unlinkat()
1551 	p9_tag_remove(clnt, req);  in p9_client_unlinkat()
1580 	struct p9_client *clnt = fid->clnt;  in p9_client_read_once()  local
1591 	if (!rsize || rsize > clnt->msize - P9_IOHDRSZ)  in p9_client_read_once()
1592 		rsize = clnt->msize - P9_IOHDRSZ;  in p9_client_read_once()
1598 	if (clnt->trans_mod->zc_request && rsize > 1024) {  in p9_client_read_once()
1602 		req = p9_client_zc_rpc(clnt, P9_TREAD, to, NULL, rsize,  in p9_client_read_once()
1607 		req = p9_client_rpc(clnt, P9_TREAD, "dqd", fid->fid, offset,  in p9_client_read_once()
1615 	*err = p9pdu_readf(&req->rc, clnt->proto_version,  in p9_client_read_once()
1618 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_read_once()
1619 		p9_tag_remove(clnt, req);  in p9_client_read_once()
1634 			p9_tag_remove(clnt, req);  in p9_client_read_once()
1640 	p9_tag_remove(clnt, req);  in p9_client_read_once()
1648 	struct p9_client *clnt = fid->clnt;  in p9_client_write()  local
1660 		if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)  in p9_client_write()
1661 			rsize = clnt->msize - P9_IOHDRSZ;  in p9_client_write()
1667 		if (clnt->trans_mod->zc_request && rsize > 1024) {  in p9_client_write()
1668 			req = p9_client_zc_rpc(clnt, P9_TWRITE, NULL, from, 0,  in p9_client_write()
1672 			req = p9_client_rpc(clnt, P9_TWRITE, "dqV", fid->fid,  in p9_client_write()
1680 		*err = p9pdu_readf(&req->rc, clnt->proto_version, "d", &count);  in p9_client_write()
1682 			trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_write()
1683 			p9_tag_remove(clnt, req);  in p9_client_write()
1693 		p9_tag_remove(clnt, req);  in p9_client_write()
1705 	struct p9_client *clnt;  in p9_client_stat()  local
1716 	clnt = fid->clnt;  in p9_client_stat()
1718 	req = p9_client_rpc(clnt, P9_TSTAT, "d", fid->fid);  in p9_client_stat()
1724 	err = p9pdu_readf(&req->rc, clnt->proto_version, "wS", &ignored, ret);  in p9_client_stat()
1726 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_stat()
1727 		p9_tag_remove(clnt, req);  in p9_client_stat()
1744 	p9_tag_remove(clnt, req);  in p9_client_stat()
1757 	struct p9_client *clnt;  in p9_client_getattr_dotl()  local
1769 	clnt = fid->clnt;  in p9_client_getattr_dotl()
1771 	req = p9_client_rpc(clnt, P9_TGETATTR, "dq", fid->fid, request_mask);  in p9_client_getattr_dotl()
1777 	err = p9pdu_readf(&req->rc, clnt->proto_version, "A", ret);  in p9_client_getattr_dotl()
1779 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_getattr_dotl()
1780 		p9_tag_remove(clnt, req);  in p9_client_getattr_dotl()
1805 	p9_tag_remove(clnt, req);  in p9_client_getattr_dotl()
1847 	struct p9_client *clnt;  in p9_client_wstat()  local
1850 	clnt = fid->clnt;  in p9_client_wstat()
1851 	wst->size = p9_client_statsize(wst, clnt->proto_version);  in p9_client_wstat()
1866 	req = p9_client_rpc(clnt, P9_TWSTAT, "dwS", fid->fid, wst->size+2, wst);  in p9_client_wstat()
1874 	p9_tag_remove(clnt, req);  in p9_client_wstat()
1884 	struct p9_client *clnt;  in p9_client_setattr()  local
1887 	clnt = fid->clnt;  in p9_client_setattr()
1899 	req = p9_client_rpc(clnt, P9_TSETATTR, "dI", fid->fid, p9attr);  in p9_client_setattr()
1906 	p9_tag_remove(clnt, req);  in p9_client_setattr()
1916 	struct p9_client *clnt;  in p9_client_statfs()  local
1919 	clnt = fid->clnt;  in p9_client_statfs()
1923 	req = p9_client_rpc(clnt, P9_TSTATFS, "d", fid->fid);  in p9_client_statfs()
1929 	err = p9pdu_readf(&req->rc, clnt->proto_version, "ddqqqqqqd", &sb->type,  in p9_client_statfs()
1933 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_statfs()
1934 		p9_tag_remove(clnt, req);  in p9_client_statfs()
1945 	p9_tag_remove(clnt, req);  in p9_client_statfs()
1956 	struct p9_client *clnt;  in p9_client_rename()  local
1959 	clnt = fid->clnt;  in p9_client_rename()
1964 	req = p9_client_rpc(clnt, P9_TRENAME, "dds", fid->fid,  in p9_client_rename()
1973 	p9_tag_remove(clnt, req);  in p9_client_rename()
1984 	struct p9_client *clnt;  in p9_client_renameat()  local
1987 	clnt = olddirfid->clnt;  in p9_client_renameat()
1993 	req = p9_client_rpc(clnt, P9_TRENAMEAT, "dsds", olddirfid->fid,  in p9_client_renameat()
2003 	p9_tag_remove(clnt, req);  in p9_client_renameat()
2017 	struct p9_client *clnt;  in p9_client_xattrwalk()  local
2021 	clnt = file_fid->clnt;  in p9_client_xattrwalk()
2022 	attr_fid = p9_fid_create(clnt);  in p9_client_xattrwalk()
2031 	req = p9_client_rpc(clnt, P9_TXATTRWALK, "dds",  in p9_client_xattrwalk()
2037 	err = p9pdu_readf(&req->rc, clnt->proto_version, "q", attr_size);  in p9_client_xattrwalk()
2039 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_xattrwalk()
2040 		p9_tag_remove(clnt, req);  in p9_client_xattrwalk()
2043 	p9_tag_remove(clnt, req);  in p9_client_xattrwalk()
2063 	struct p9_client *clnt;  in p9_client_xattrcreate()  local
2069 	clnt = fid->clnt;  in p9_client_xattrcreate()
2070 	req = p9_client_rpc(clnt, P9_TXATTRCREATE, "dsqd",  in p9_client_xattrcreate()
2077 	p9_tag_remove(clnt, req);  in p9_client_xattrcreate()
2086 	struct p9_client *clnt;  in p9_client_readdir()  local
2098 	clnt = fid->clnt;  in p9_client_readdir()
2101 	if (!rsize || rsize > clnt->msize-P9_READDIRHDRSZ)  in p9_client_readdir()
2102 		rsize = clnt->msize - P9_READDIRHDRSZ;  in p9_client_readdir()
2108 	if (clnt->trans_mod->zc_request && rsize > 1024) {  in p9_client_readdir()
2113 		req = p9_client_zc_rpc(clnt, P9_TREADDIR, &to, NULL, rsize, 0,  in p9_client_readdir()
2117 		req = p9_client_rpc(clnt, P9_TREADDIR, "dqd", fid->fid,  in p9_client_readdir()
2125 	err = p9pdu_readf(&req->rc, clnt->proto_version, "D", &count, &dataptr);  in p9_client_readdir()
2127 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_readdir()
2140 	p9_tag_remove(clnt, req);  in p9_client_readdir()
2144 	p9_tag_remove(clnt, req);  in p9_client_readdir()
2154 	struct p9_client *clnt;  in p9_client_mknod_dotl()  local
2158 	clnt = fid->clnt;  in p9_client_mknod_dotl()
2161 	req = p9_client_rpc(clnt, P9_TMKNOD, "dsdddg", fid->fid, name, mode,  in p9_client_mknod_dotl()
2166 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Q", qid);  in p9_client_mknod_dotl()
2168 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_mknod_dotl()
2175 	p9_tag_remove(clnt, req);  in p9_client_mknod_dotl()
2185 	struct p9_client *clnt;  in p9_client_mkdir_dotl()  local
2189 	clnt = fid->clnt;  in p9_client_mkdir_dotl()
2192 	req = p9_client_rpc(clnt, P9_TMKDIR, "dsdg", fid->fid, name, mode,  in p9_client_mkdir_dotl()
2197 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Q", qid);  in p9_client_mkdir_dotl()
2199 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_mkdir_dotl()
2206 	p9_tag_remove(clnt, req);  in p9_client_mkdir_dotl()
2215 	struct p9_client *clnt;  in p9_client_lock_dotl()  local
2219 	clnt = fid->clnt;  in p9_client_lock_dotl()
2225 	req = p9_client_rpc(clnt, P9_TLOCK, "dbdqqds", fid->fid, flock->type,  in p9_client_lock_dotl()
2232 	err = p9pdu_readf(&req->rc, clnt->proto_version, "b", status);  in p9_client_lock_dotl()
2234 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_lock_dotl()
2239 	p9_tag_remove(clnt, req);  in p9_client_lock_dotl()
2248 	struct p9_client *clnt;  in p9_client_getlock_dotl()  local
2252 	clnt = fid->clnt;  in p9_client_getlock_dotl()
2257 	req = p9_client_rpc(clnt, P9_TGETLOCK, "dbqqds", fid->fid,  glock->type,  in p9_client_getlock_dotl()
2263 	err = p9pdu_readf(&req->rc, clnt->proto_version, "bqqds", &glock->type,  in p9_client_getlock_dotl()
2267 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_getlock_dotl()
2274 	p9_tag_remove(clnt, req);  in p9_client_getlock_dotl()
2282 	struct p9_client *clnt;  in p9_client_readlink()  local
2286 	clnt = fid->clnt;  in p9_client_readlink()
2289 	req = p9_client_rpc(clnt, P9_TREADLINK, "d", fid->fid);  in p9_client_readlink()
2293 	err = p9pdu_readf(&req->rc, clnt->proto_version, "s", target);  in p9_client_readlink()
2295 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_readlink()
2300 	p9_tag_remove(clnt, req);  in p9_client_readlink()