54 inline int p9_is_proto_dotl(struct p9_client *clnt)  in p9_is_proto_dotl()  argument
56 	return clnt->proto_version == p9_proto_2000L;  in p9_is_proto_dotl()
60 inline int p9_is_proto_dotu(struct p9_client *clnt)  in p9_is_proto_dotu()  argument
62 	return clnt->proto_version == p9_proto_2000u;  in p9_is_proto_dotu()
66 int p9_show_client_options(struct seq_file *m, struct p9_client *clnt)  in p9_show_client_options()  argument
68 	if (clnt->msize != 8192)  in p9_show_client_options()
69 		seq_printf(m, ",msize=%u", clnt->msize);  in p9_show_client_options()
70 	seq_printf(m, ",trans=%s", clnt->trans_mod->name);  in p9_show_client_options()
72 	switch (clnt->proto_version) {  in p9_show_client_options()
84 	if (clnt->trans_mod->show_options)  in p9_show_client_options()
85 		return clnt->trans_mod->show_options(m, clnt);  in p9_show_client_options()
132 static int parse_opts(char *opts, struct p9_client *clnt)  in parse_opts()  argument
141 	clnt->proto_version = p9_proto_2000L;  in parse_opts()
142 	clnt->msize = 8192;  in parse_opts()
175 			clnt->msize = option;  in parse_opts()
186 			v9fs_put_trans(clnt->trans_mod);  in parse_opts()
187 			clnt->trans_mod = v9fs_get_trans_by_name(s);  in parse_opts()
188 			if (clnt->trans_mod == NULL) {  in parse_opts()
196 			clnt->proto_version = p9_proto_legacy;  in parse_opts()
210 				clnt->proto_version = r;  in parse_opts()
220 		v9fs_put_trans(clnt->trans_mod);  in parse_opts()
888 static struct p9_fid *p9_fid_create(struct p9_client *clnt)  in p9_fid_create()  argument
893 	p9_debug(P9_DEBUG_FID, "clnt %p\n", clnt);  in p9_fid_create()
901 	fid->clnt = clnt;  in p9_fid_create()
906 	spin_lock_irq(&clnt->lock);  in p9_fid_create()
907 	ret = idr_alloc_u32(&clnt->fids, fid, &fid->fid, P9_NOFID - 1,  in p9_fid_create()
909 	spin_unlock_irq(&clnt->lock);  in p9_fid_create()
921 	struct p9_client *clnt;  in p9_fid_destroy()  local
925 	clnt = fid->clnt;  in p9_fid_destroy()
926 	spin_lock_irqsave(&clnt->lock, flags);  in p9_fid_destroy()
927 	idr_remove(&clnt->fids, fid->fid);  in p9_fid_destroy()
928 	spin_unlock_irqrestore(&clnt->lock, flags);  in p9_fid_destroy()
1003 	struct p9_client *clnt;  in p9_client_create()  local
1007 	clnt = kmalloc(sizeof(struct p9_client), GFP_KERNEL);  in p9_client_create()
1008 	if (!clnt)  in p9_client_create()
1011 	clnt->trans_mod = NULL;  in p9_client_create()
1012 	clnt->trans = NULL;  in p9_client_create()
1013 	clnt->fcall_cache = NULL;  in p9_client_create()
1016 	memcpy(clnt->name, client_id, strlen(client_id) + 1);  in p9_client_create()
1018 	spin_lock_init(&clnt->lock);  in p9_client_create()
1019 	idr_init(&clnt->fids);  in p9_client_create()
1020 	idr_init(&clnt->reqs);  in p9_client_create()
1022 	err = parse_opts(options, clnt);  in p9_client_create()
1026 	if (!clnt->trans_mod)  in p9_client_create()
1027 		clnt->trans_mod = v9fs_get_default_trans();  in p9_client_create()
1029 	if (clnt->trans_mod == NULL) {  in p9_client_create()
1037 		 clnt, clnt->trans_mod, clnt->msize, clnt->proto_version);  in p9_client_create()
1039 	err = clnt->trans_mod->create(clnt, dev_name, options);  in p9_client_create()
1043 	if (clnt->msize > clnt->trans_mod->maxsize)  in p9_client_create()
1044 		clnt->msize = clnt->trans_mod->maxsize;  in p9_client_create()
1046 	if (clnt->msize < 4096) {  in p9_client_create()
1053 	err = p9_client_version(clnt);  in p9_client_create()
1060 	clnt->fcall_cache =  in p9_client_create()
1061 		kmem_cache_create_usercopy("9p-fcall-cache", clnt->msize,  in p9_client_create()
1063 					   clnt->msize - (P9_HDRSZ + 4),  in p9_client_create()
1066 	return clnt;  in p9_client_create()
1069 	clnt->trans_mod->close(clnt);  in p9_client_create()
1071 	v9fs_put_trans(clnt->trans_mod);  in p9_client_create()
1073 	kfree(clnt);  in p9_client_create()
1078 void p9_client_destroy(struct p9_client *clnt)  in p9_client_destroy()  argument
1083 	p9_debug(P9_DEBUG_MUX, "clnt %p\n", clnt);  in p9_client_destroy()
1085 	if (clnt->trans_mod)  in p9_client_destroy()
1086 		clnt->trans_mod->close(clnt);  in p9_client_destroy()
1088 	v9fs_put_trans(clnt->trans_mod);  in p9_client_destroy()
1090 	idr_for_each_entry(&clnt->fids, fid, id) {  in p9_client_destroy()
1095 	p9_tag_cleanup(clnt);  in p9_client_destroy()
1097 	kmem_cache_destroy(clnt->fcall_cache);  in p9_client_destroy()
1098 	kfree(clnt);  in p9_client_destroy()
1102 void p9_client_disconnect(struct p9_client *clnt)  in p9_client_disconnect()  argument
1104 	p9_debug(P9_DEBUG_9P, "clnt %p\n", clnt);  in p9_client_disconnect()
1105 	clnt->status = Disconnected;  in p9_client_disconnect()
1109 void p9_client_begin_disconnect(struct p9_client *clnt)  in p9_client_begin_disconnect()  argument
1111 	p9_debug(P9_DEBUG_9P, "clnt %p\n", clnt);  in p9_client_begin_disconnect()
1112 	clnt->status = BeginDisconnect;  in p9_client_begin_disconnect()
1116 struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,  in p9_client_attach()  argument
1127 	fid = p9_fid_create(clnt);  in p9_client_attach()
1134 	req = p9_client_rpc(clnt, P9_TATTACH, "ddss?u", fid->fid,  in p9_client_attach()
1141 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Q", &qid);  in p9_client_attach()
1143 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_attach()
1144 		p9_tag_remove(clnt, req);  in p9_client_attach()
1153 	p9_tag_remove(clnt, req);  in p9_client_attach()
1167 	struct p9_client *clnt;  in p9_client_walk()  local
1175 	clnt = oldfid->clnt;  in p9_client_walk()
1177 		fid = p9_fid_create(clnt);  in p9_client_walk()
1191 	req = p9_client_rpc(clnt, P9_TWALK, "ddT", oldfid->fid, fid->fid,  in p9_client_walk()
1198 	err = p9pdu_readf(&req->rc, clnt->proto_version, "R", &nwqids, &wqids);  in p9_client_walk()
1200 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_walk()
1201 		p9_tag_remove(clnt, req);  in p9_client_walk()
1204 	p9_tag_remove(clnt, req);  in p9_client_walk()
1243 	struct p9_client *clnt;  in p9_client_open()  local
1248 	clnt = fid->clnt;  in p9_client_open()
1250 		p9_is_proto_dotl(clnt) ? "TLOPEN" : "TOPEN", fid->fid, mode);  in p9_client_open()
1256 	if (p9_is_proto_dotl(clnt))  in p9_client_open()
1257 		req = p9_client_rpc(clnt, P9_TLOPEN, "dd", fid->fid, mode);  in p9_client_open()
1259 		req = p9_client_rpc(clnt, P9_TOPEN, "db", fid->fid, mode);  in p9_client_open()
1265 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Qd", &qid, &iounit);  in p9_client_open()
1267 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_open()
1272 		p9_is_proto_dotl(clnt) ? "RLOPEN" : "ROPEN",  qid.type,  in p9_client_open()
1279 	p9_tag_remove(clnt, req);  in p9_client_open()
1289 	struct p9_client *clnt;  in p9_client_create_dotl()  local
1297 	clnt = ofid->clnt;  in p9_client_create_dotl()
1302 	req = p9_client_rpc(clnt, P9_TLCREATE, "dsddg", ofid->fid, name, flags,  in p9_client_create_dotl()
1309 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Qd", qid, &iounit);  in p9_client_create_dotl()
1311 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_create_dotl()
1324 	p9_tag_remove(clnt, req);  in p9_client_create_dotl()
1334 	struct p9_client *clnt;  in p9_client_fcreate()  local
1342 	clnt = fid->clnt;  in p9_client_fcreate()
1347 	req = p9_client_rpc(clnt, P9_TCREATE, "dsdb?s", fid->fid, name, perm,  in p9_client_fcreate()
1354 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Qd", &qid, &iounit);  in p9_client_fcreate()
1356 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_fcreate()
1369 	p9_tag_remove(clnt, req);  in p9_client_fcreate()
1379 	struct p9_client *clnt;  in p9_client_symlink()  local
1384 	clnt = dfid->clnt;  in p9_client_symlink()
1386 	req = p9_client_rpc(clnt, P9_TSYMLINK, "dssg", dfid->fid, name, symtgt,  in p9_client_symlink()
1393 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Q", qid);  in p9_client_symlink()
1395 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_symlink()
1403 	p9_tag_remove(clnt, req);  in p9_client_symlink()
1411 	struct p9_client *clnt;  in p9_client_link()  local
1416 	clnt = dfid->clnt;  in p9_client_link()
1417 	req = p9_client_rpc(clnt, P9_TLINK, "dds", dfid->fid, oldfid->fid,  in p9_client_link()
1423 	p9_tag_remove(clnt, req);  in p9_client_link()
1431 	struct p9_client *clnt;  in p9_client_fsync()  local
1437 	clnt = fid->clnt;  in p9_client_fsync()
1439 	req = p9_client_rpc(clnt, P9_TFSYNC, "dd", fid->fid, datasync);  in p9_client_fsync()
1447 	p9_tag_remove(clnt, req);  in p9_client_fsync()
1457 	struct p9_client *clnt;  in p9_client_clunk()  local
1472 	clnt = fid->clnt;  in p9_client_clunk()
1474 	req = p9_client_rpc(clnt, P9_TCLUNK, "d", fid->fid);  in p9_client_clunk()
1482 	p9_tag_remove(clnt, req);  in p9_client_clunk()
1501 	struct p9_client *clnt;  in p9_client_remove()  local
1506 	clnt = fid->clnt;  in p9_client_remove()
1508 	req = p9_client_rpc(clnt, P9_TREMOVE, "d", fid->fid);  in p9_client_remove()
1516 	p9_tag_remove(clnt, req);  in p9_client_remove()
1530 	struct p9_client *clnt;  in p9_client_unlinkat()  local
1535 	clnt = dfid->clnt;  in p9_client_unlinkat()
1536 	req = p9_client_rpc(clnt, P9_TUNLINKAT, "dsd", dfid->fid, name, flags);  in p9_client_unlinkat()
1543 	p9_tag_remove(clnt, req);  in p9_client_unlinkat()
1552 	struct p9_client *clnt = fid->clnt;  in p9_client_read()  local
1566 		if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)  in p9_client_read()
1567 			rsize = clnt->msize - P9_IOHDRSZ;  in p9_client_read()
1573 		if (clnt->trans_mod->zc_request && rsize > 1024) {  in p9_client_read()
1578 			req = p9_client_zc_rpc(clnt, P9_TREAD, to, NULL, rsize,  in p9_client_read()
1583 			req = p9_client_rpc(clnt, P9_TREAD, "dqd", fid->fid, offset,  in p9_client_read()
1591 		*err = p9pdu_readf(&req->rc, clnt->proto_version,  in p9_client_read()
1594 			trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_read()
1595 			p9_tag_remove(clnt, req);  in p9_client_read()
1605 			p9_tag_remove(clnt, req);  in p9_client_read()
1615 				p9_tag_remove(clnt, req);  in p9_client_read()
1623 		p9_tag_remove(clnt, req);  in p9_client_read()
1632 	struct p9_client *clnt = fid->clnt;  in p9_client_write()  local
1644 		if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)  in p9_client_write()
1645 			rsize = clnt->msize - P9_IOHDRSZ;  in p9_client_write()
1651 		if (clnt->trans_mod->zc_request && rsize > 1024) {  in p9_client_write()
1652 			req = p9_client_zc_rpc(clnt, P9_TWRITE, NULL, from, 0,  in p9_client_write()
1656 			req = p9_client_rpc(clnt, P9_TWRITE, "dqV", fid->fid,  in p9_client_write()
1664 		*err = p9pdu_readf(&req->rc, clnt->proto_version, "d", &count);  in p9_client_write()
1666 			trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_write()
1667 			p9_tag_remove(clnt, req);  in p9_client_write()
1677 		p9_tag_remove(clnt, req);  in p9_client_write()
1689 	struct p9_client *clnt;  in p9_client_stat()  local
1700 	clnt = fid->clnt;  in p9_client_stat()
1702 	req = p9_client_rpc(clnt, P9_TSTAT, "d", fid->fid);  in p9_client_stat()
1708 	err = p9pdu_readf(&req->rc, clnt->proto_version, "wS", &ignored, ret);  in p9_client_stat()
1710 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_stat()
1711 		p9_tag_remove(clnt, req);  in p9_client_stat()
1728 	p9_tag_remove(clnt, req);  in p9_client_stat()
1741 	struct p9_client *clnt;  in p9_client_getattr_dotl()  local
1753 	clnt = fid->clnt;  in p9_client_getattr_dotl()
1755 	req = p9_client_rpc(clnt, P9_TGETATTR, "dq", fid->fid, request_mask);  in p9_client_getattr_dotl()
1761 	err = p9pdu_readf(&req->rc, clnt->proto_version, "A", ret);  in p9_client_getattr_dotl()
1763 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_getattr_dotl()
1764 		p9_tag_remove(clnt, req);  in p9_client_getattr_dotl()
1789 	p9_tag_remove(clnt, req);  in p9_client_getattr_dotl()
1831 	struct p9_client *clnt;  in p9_client_wstat()  local
1834 	clnt = fid->clnt;  in p9_client_wstat()
1835 	wst->size = p9_client_statsize(wst, clnt->proto_version);  in p9_client_wstat()
1850 	req = p9_client_rpc(clnt, P9_TWSTAT, "dwS", fid->fid, wst->size+2, wst);  in p9_client_wstat()
1858 	p9_tag_remove(clnt, req);  in p9_client_wstat()
1868 	struct p9_client *clnt;  in p9_client_setattr()  local
1871 	clnt = fid->clnt;  in p9_client_setattr()
1883 	req = p9_client_rpc(clnt, P9_TSETATTR, "dI", fid->fid, p9attr);  in p9_client_setattr()
1890 	p9_tag_remove(clnt, req);  in p9_client_setattr()
1900 	struct p9_client *clnt;  in p9_client_statfs()  local
1903 	clnt = fid->clnt;  in p9_client_statfs()
1907 	req = p9_client_rpc(clnt, P9_TSTATFS, "d", fid->fid);  in p9_client_statfs()
1913 	err = p9pdu_readf(&req->rc, clnt->proto_version, "ddqqqqqqd", &sb->type,  in p9_client_statfs()
1917 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_statfs()
1918 		p9_tag_remove(clnt, req);  in p9_client_statfs()
1929 	p9_tag_remove(clnt, req);  in p9_client_statfs()
1940 	struct p9_client *clnt;  in p9_client_rename()  local
1943 	clnt = fid->clnt;  in p9_client_rename()
1948 	req = p9_client_rpc(clnt, P9_TRENAME, "dds", fid->fid,  in p9_client_rename()
1957 	p9_tag_remove(clnt, req);  in p9_client_rename()
1968 	struct p9_client *clnt;  in p9_client_renameat()  local
1971 	clnt = olddirfid->clnt;  in p9_client_renameat()
1977 	req = p9_client_rpc(clnt, P9_TRENAMEAT, "dsds", olddirfid->fid,  in p9_client_renameat()
1987 	p9_tag_remove(clnt, req);  in p9_client_renameat()
2001 	struct p9_client *clnt;  in p9_client_xattrwalk()  local
2005 	clnt = file_fid->clnt;  in p9_client_xattrwalk()
2006 	attr_fid = p9_fid_create(clnt);  in p9_client_xattrwalk()
2015 	req = p9_client_rpc(clnt, P9_TXATTRWALK, "dds",  in p9_client_xattrwalk()
2021 	err = p9pdu_readf(&req->rc, clnt->proto_version, "q", attr_size);  in p9_client_xattrwalk()
2023 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_xattrwalk()
2024 		p9_tag_remove(clnt, req);  in p9_client_xattrwalk()
2027 	p9_tag_remove(clnt, req);  in p9_client_xattrwalk()
2047 	struct p9_client *clnt;  in p9_client_xattrcreate()  local
2053 	clnt = fid->clnt;  in p9_client_xattrcreate()
2054 	req = p9_client_rpc(clnt, P9_TXATTRCREATE, "dsqd",  in p9_client_xattrcreate()
2061 	p9_tag_remove(clnt, req);  in p9_client_xattrcreate()
2070 	struct p9_client *clnt;  in p9_client_readdir()  local
2082 	clnt = fid->clnt;  in p9_client_readdir()
2085 	if (!rsize || rsize > clnt->msize-P9_READDIRHDRSZ)  in p9_client_readdir()
2086 		rsize = clnt->msize - P9_READDIRHDRSZ;  in p9_client_readdir()
2092 	if (clnt->trans_mod->zc_request && rsize > 1024) {  in p9_client_readdir()
2097 		req = p9_client_zc_rpc(clnt, P9_TREADDIR, &to, NULL, rsize, 0,  in p9_client_readdir()
2101 		req = p9_client_rpc(clnt, P9_TREADDIR, "dqd", fid->fid,  in p9_client_readdir()
2109 	err = p9pdu_readf(&req->rc, clnt->proto_version, "D", &count, &dataptr);  in p9_client_readdir()
2111 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_readdir()
2124 	p9_tag_remove(clnt, req);  in p9_client_readdir()
2128 	p9_tag_remove(clnt, req);  in p9_client_readdir()
2138 	struct p9_client *clnt;  in p9_client_mknod_dotl()  local
2142 	clnt = fid->clnt;  in p9_client_mknod_dotl()
2145 	req = p9_client_rpc(clnt, P9_TMKNOD, "dsdddg", fid->fid, name, mode,  in p9_client_mknod_dotl()
2150 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Q", qid);  in p9_client_mknod_dotl()
2152 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_mknod_dotl()
2159 	p9_tag_remove(clnt, req);  in p9_client_mknod_dotl()
2169 	struct p9_client *clnt;  in p9_client_mkdir_dotl()  local
2173 	clnt = fid->clnt;  in p9_client_mkdir_dotl()
2176 	req = p9_client_rpc(clnt, P9_TMKDIR, "dsdg", fid->fid, name, mode,  in p9_client_mkdir_dotl()
2181 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Q", qid);  in p9_client_mkdir_dotl()
2183 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_mkdir_dotl()
2190 	p9_tag_remove(clnt, req);  in p9_client_mkdir_dotl()
2199 	struct p9_client *clnt;  in p9_client_lock_dotl()  local
2203 	clnt = fid->clnt;  in p9_client_lock_dotl()
2209 	req = p9_client_rpc(clnt, P9_TLOCK, "dbdqqds", fid->fid, flock->type,  in p9_client_lock_dotl()
2216 	err = p9pdu_readf(&req->rc, clnt->proto_version, "b", status);  in p9_client_lock_dotl()
2218 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_lock_dotl()
2223 	p9_tag_remove(clnt, req);  in p9_client_lock_dotl()
2232 	struct p9_client *clnt;  in p9_client_getlock_dotl()  local
2236 	clnt = fid->clnt;  in p9_client_getlock_dotl()
2241 	req = p9_client_rpc(clnt, P9_TGETLOCK, "dbqqds", fid->fid,  glock->type,  in p9_client_getlock_dotl()
2247 	err = p9pdu_readf(&req->rc, clnt->proto_version, "bqqds", &glock->type,  in p9_client_getlock_dotl()
2251 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_getlock_dotl()
2258 	p9_tag_remove(clnt, req);  in p9_client_getlock_dotl()
2266 	struct p9_client *clnt;  in p9_client_readlink()  local
2270 	clnt = fid->clnt;  in p9_client_readlink()
2273 	req = p9_client_rpc(clnt, P9_TREADLINK, "d", fid->fid);  in p9_client_readlink()
2277 	err = p9pdu_readf(&req->rc, clnt->proto_version, "s", target);  in p9_client_readlink()
2279 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_readlink()
2284 	p9_tag_remove(clnt, req);  in p9_client_readlink()