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()
890 static struct p9_fid *p9_fid_create(struct p9_client *clnt)  in p9_fid_create()  argument
895 	p9_debug(P9_DEBUG_FID, "clnt %p\n", clnt);  in p9_fid_create()
902 	fid->clnt = clnt;  in p9_fid_create()
905 	spin_lock_irq(&clnt->lock);  in p9_fid_create()
906 	ret = idr_alloc_u32(&clnt->fids, fid, &fid->fid, P9_NOFID - 1,  in p9_fid_create()
908 	spin_unlock_irq(&clnt->lock);  in p9_fid_create()
920 	struct p9_client *clnt;  in p9_fid_destroy()  local
924 	clnt = fid->clnt;  in p9_fid_destroy()
925 	spin_lock_irqsave(&clnt->lock, flags);  in p9_fid_destroy()
926 	idr_remove(&clnt->fids, fid->fid);  in p9_fid_destroy()
927 	spin_unlock_irqrestore(&clnt->lock, flags);  in p9_fid_destroy()
1002 	struct p9_client *clnt;  in p9_client_create()  local
1006 	clnt = kmalloc(sizeof(struct p9_client), GFP_KERNEL);  in p9_client_create()
1007 	if (!clnt)  in p9_client_create()
1010 	clnt->trans_mod = NULL;  in p9_client_create()
1011 	clnt->trans = NULL;  in p9_client_create()
1012 	clnt->fcall_cache = NULL;  in p9_client_create()
1015 	memcpy(clnt->name, client_id, strlen(client_id) + 1);  in p9_client_create()
1017 	spin_lock_init(&clnt->lock);  in p9_client_create()
1018 	idr_init(&clnt->fids);  in p9_client_create()
1019 	idr_init(&clnt->reqs);  in p9_client_create()
1021 	err = parse_opts(options, clnt);  in p9_client_create()
1025 	if (!clnt->trans_mod)  in p9_client_create()
1026 		clnt->trans_mod = v9fs_get_default_trans();  in p9_client_create()
1028 	if (clnt->trans_mod == NULL) {  in p9_client_create()
1036 		 clnt, clnt->trans_mod, clnt->msize, clnt->proto_version);  in p9_client_create()
1038 	err = clnt->trans_mod->create(clnt, dev_name, options);  in p9_client_create()
1042 	if (clnt->msize > clnt->trans_mod->maxsize)  in p9_client_create()
1043 		clnt->msize = clnt->trans_mod->maxsize;  in p9_client_create()
1045 	if (clnt->msize < 4096) {  in p9_client_create()
1052 	err = p9_client_version(clnt);  in p9_client_create()
1059 	clnt->fcall_cache =  in p9_client_create()
1060 		kmem_cache_create_usercopy("9p-fcall-cache", clnt->msize,  in p9_client_create()
1062 					   clnt->msize - (P9_HDRSZ + 4),  in p9_client_create()
1065 	return clnt;  in p9_client_create()
1068 	clnt->trans_mod->close(clnt);  in p9_client_create()
1070 	v9fs_put_trans(clnt->trans_mod);  in p9_client_create()
1072 	kfree(clnt);  in p9_client_create()
1077 void p9_client_destroy(struct p9_client *clnt)  in p9_client_destroy()  argument
1082 	p9_debug(P9_DEBUG_MUX, "clnt %p\n", clnt);  in p9_client_destroy()
1084 	if (clnt->trans_mod)  in p9_client_destroy()
1085 		clnt->trans_mod->close(clnt);  in p9_client_destroy()
1087 	v9fs_put_trans(clnt->trans_mod);  in p9_client_destroy()
1089 	idr_for_each_entry(&clnt->fids, fid, id) {  in p9_client_destroy()
1094 	p9_tag_cleanup(clnt);  in p9_client_destroy()
1096 	kmem_cache_destroy(clnt->fcall_cache);  in p9_client_destroy()
1097 	kfree(clnt);  in p9_client_destroy()
1101 void p9_client_disconnect(struct p9_client *clnt)  in p9_client_disconnect()  argument
1103 	p9_debug(P9_DEBUG_9P, "clnt %p\n", clnt);  in p9_client_disconnect()
1104 	clnt->status = Disconnected;  in p9_client_disconnect()
1108 void p9_client_begin_disconnect(struct p9_client *clnt)  in p9_client_begin_disconnect()  argument
1110 	p9_debug(P9_DEBUG_9P, "clnt %p\n", clnt);  in p9_client_begin_disconnect()
1111 	clnt->status = BeginDisconnect;  in p9_client_begin_disconnect()
1115 struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid,  in p9_client_attach()  argument
1126 	fid = p9_fid_create(clnt);  in p9_client_attach()
1133 	req = p9_client_rpc(clnt, P9_TATTACH, "ddss?u", fid->fid,  in p9_client_attach()
1140 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Q", &qid);  in p9_client_attach()
1142 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_attach()
1143 		p9_tag_remove(clnt, req);  in p9_client_attach()
1152 	p9_tag_remove(clnt, req);  in p9_client_attach()
1166 	struct p9_client *clnt;  in p9_client_walk()  local
1174 	clnt = oldfid->clnt;  in p9_client_walk()
1176 		fid = p9_fid_create(clnt);  in p9_client_walk()
1190 	req = p9_client_rpc(clnt, P9_TWALK, "ddT", oldfid->fid, fid->fid,  in p9_client_walk()
1197 	err = p9pdu_readf(&req->rc, clnt->proto_version, "R", &nwqids, &wqids);  in p9_client_walk()
1199 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_walk()
1200 		p9_tag_remove(clnt, req);  in p9_client_walk()
1203 	p9_tag_remove(clnt, req);  in p9_client_walk()
1242 	struct p9_client *clnt;  in p9_client_open()  local
1247 	clnt = fid->clnt;  in p9_client_open()
1249 		p9_is_proto_dotl(clnt) ? "TLOPEN" : "TOPEN", fid->fid, mode);  in p9_client_open()
1255 	if (p9_is_proto_dotl(clnt))  in p9_client_open()
1256 		req = p9_client_rpc(clnt, P9_TLOPEN, "dd", fid->fid, mode);  in p9_client_open()
1258 		req = p9_client_rpc(clnt, P9_TOPEN, "db", fid->fid, mode);  in p9_client_open()
1264 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Qd", &qid, &iounit);  in p9_client_open()
1266 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_open()
1271 		p9_is_proto_dotl(clnt) ? "RLOPEN" : "ROPEN",  qid.type,  in p9_client_open()
1278 	p9_tag_remove(clnt, req);  in p9_client_open()
1288 	struct p9_client *clnt;  in p9_client_create_dotl()  local
1296 	clnt = ofid->clnt;  in p9_client_create_dotl()
1301 	req = p9_client_rpc(clnt, P9_TLCREATE, "dsddg", ofid->fid, name, flags,  in p9_client_create_dotl()
1308 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Qd", qid, &iounit);  in p9_client_create_dotl()
1310 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_create_dotl()
1323 	p9_tag_remove(clnt, req);  in p9_client_create_dotl()
1333 	struct p9_client *clnt;  in p9_client_fcreate()  local
1341 	clnt = fid->clnt;  in p9_client_fcreate()
1346 	req = p9_client_rpc(clnt, P9_TCREATE, "dsdb?s", fid->fid, name, perm,  in p9_client_fcreate()
1353 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Qd", &qid, &iounit);  in p9_client_fcreate()
1355 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_fcreate()
1368 	p9_tag_remove(clnt, req);  in p9_client_fcreate()
1378 	struct p9_client *clnt;  in p9_client_symlink()  local
1383 	clnt = dfid->clnt;  in p9_client_symlink()
1385 	req = p9_client_rpc(clnt, P9_TSYMLINK, "dssg", dfid->fid, name, symtgt,  in p9_client_symlink()
1392 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Q", qid);  in p9_client_symlink()
1394 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_symlink()
1402 	p9_tag_remove(clnt, req);  in p9_client_symlink()
1410 	struct p9_client *clnt;  in p9_client_link()  local
1415 	clnt = dfid->clnt;  in p9_client_link()
1416 	req = p9_client_rpc(clnt, P9_TLINK, "dds", dfid->fid, oldfid->fid,  in p9_client_link()
1422 	p9_tag_remove(clnt, req);  in p9_client_link()
1430 	struct p9_client *clnt;  in p9_client_fsync()  local
1436 	clnt = fid->clnt;  in p9_client_fsync()
1438 	req = p9_client_rpc(clnt, P9_TFSYNC, "dd", fid->fid, datasync);  in p9_client_fsync()
1446 	p9_tag_remove(clnt, req);  in p9_client_fsync()
1456 	struct p9_client *clnt;  in p9_client_clunk()  local
1471 	clnt = fid->clnt;  in p9_client_clunk()
1473 	req = p9_client_rpc(clnt, P9_TCLUNK, "d", fid->fid);  in p9_client_clunk()
1481 	p9_tag_remove(clnt, req);  in p9_client_clunk()
1500 	struct p9_client *clnt;  in p9_client_remove()  local
1505 	clnt = fid->clnt;  in p9_client_remove()
1507 	req = p9_client_rpc(clnt, P9_TREMOVE, "d", fid->fid);  in p9_client_remove()
1515 	p9_tag_remove(clnt, req);  in p9_client_remove()
1529 	struct p9_client *clnt;  in p9_client_unlinkat()  local
1534 	clnt = dfid->clnt;  in p9_client_unlinkat()
1535 	req = p9_client_rpc(clnt, P9_TUNLINKAT, "dsd", dfid->fid, name, flags);  in p9_client_unlinkat()
1542 	p9_tag_remove(clnt, req);  in p9_client_unlinkat()
1571 	struct p9_client *clnt = fid->clnt;  in p9_client_read_once()  local
1582 	if (!rsize || rsize > clnt->msize - P9_IOHDRSZ)  in p9_client_read_once()
1583 		rsize = clnt->msize - P9_IOHDRSZ;  in p9_client_read_once()
1589 	if (clnt->trans_mod->zc_request && rsize > 1024) {  in p9_client_read_once()
1593 		req = p9_client_zc_rpc(clnt, P9_TREAD, to, NULL, rsize,  in p9_client_read_once()
1598 		req = p9_client_rpc(clnt, P9_TREAD, "dqd", fid->fid, offset,  in p9_client_read_once()
1606 	*err = p9pdu_readf(&req->rc, clnt->proto_version,  in p9_client_read_once()
1609 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_read_once()
1610 		p9_tag_remove(clnt, req);  in p9_client_read_once()
1625 			p9_tag_remove(clnt, req);  in p9_client_read_once()
1631 	p9_tag_remove(clnt, req);  in p9_client_read_once()
1639 	struct p9_client *clnt = fid->clnt;  in p9_client_write()  local
1651 		if (!rsize || rsize > clnt->msize-P9_IOHDRSZ)  in p9_client_write()
1652 			rsize = clnt->msize - P9_IOHDRSZ;  in p9_client_write()
1658 		if (clnt->trans_mod->zc_request && rsize > 1024) {  in p9_client_write()
1659 			req = p9_client_zc_rpc(clnt, P9_TWRITE, NULL, from, 0,  in p9_client_write()
1663 			req = p9_client_rpc(clnt, P9_TWRITE, "dqV", fid->fid,  in p9_client_write()
1671 		*err = p9pdu_readf(&req->rc, clnt->proto_version, "d", &count);  in p9_client_write()
1673 			trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_write()
1674 			p9_tag_remove(clnt, req);  in p9_client_write()
1684 		p9_tag_remove(clnt, req);  in p9_client_write()
1696 	struct p9_client *clnt;  in p9_client_stat()  local
1707 	clnt = fid->clnt;  in p9_client_stat()
1709 	req = p9_client_rpc(clnt, P9_TSTAT, "d", fid->fid);  in p9_client_stat()
1715 	err = p9pdu_readf(&req->rc, clnt->proto_version, "wS", &ignored, ret);  in p9_client_stat()
1717 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_stat()
1718 		p9_tag_remove(clnt, req);  in p9_client_stat()
1735 	p9_tag_remove(clnt, req);  in p9_client_stat()
1748 	struct p9_client *clnt;  in p9_client_getattr_dotl()  local
1760 	clnt = fid->clnt;  in p9_client_getattr_dotl()
1762 	req = p9_client_rpc(clnt, P9_TGETATTR, "dq", fid->fid, request_mask);  in p9_client_getattr_dotl()
1768 	err = p9pdu_readf(&req->rc, clnt->proto_version, "A", ret);  in p9_client_getattr_dotl()
1770 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_getattr_dotl()
1771 		p9_tag_remove(clnt, req);  in p9_client_getattr_dotl()
1796 	p9_tag_remove(clnt, req);  in p9_client_getattr_dotl()
1838 	struct p9_client *clnt;  in p9_client_wstat()  local
1841 	clnt = fid->clnt;  in p9_client_wstat()
1842 	wst->size = p9_client_statsize(wst, clnt->proto_version);  in p9_client_wstat()
1857 	req = p9_client_rpc(clnt, P9_TWSTAT, "dwS", fid->fid, wst->size+2, wst);  in p9_client_wstat()
1865 	p9_tag_remove(clnt, req);  in p9_client_wstat()
1875 	struct p9_client *clnt;  in p9_client_setattr()  local
1878 	clnt = fid->clnt;  in p9_client_setattr()
1890 	req = p9_client_rpc(clnt, P9_TSETATTR, "dI", fid->fid, p9attr);  in p9_client_setattr()
1897 	p9_tag_remove(clnt, req);  in p9_client_setattr()
1907 	struct p9_client *clnt;  in p9_client_statfs()  local
1910 	clnt = fid->clnt;  in p9_client_statfs()
1914 	req = p9_client_rpc(clnt, P9_TSTATFS, "d", fid->fid);  in p9_client_statfs()
1920 	err = p9pdu_readf(&req->rc, clnt->proto_version, "ddqqqqqqd", &sb->type,  in p9_client_statfs()
1924 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_statfs()
1925 		p9_tag_remove(clnt, req);  in p9_client_statfs()
1936 	p9_tag_remove(clnt, req);  in p9_client_statfs()
1947 	struct p9_client *clnt;  in p9_client_rename()  local
1950 	clnt = fid->clnt;  in p9_client_rename()
1955 	req = p9_client_rpc(clnt, P9_TRENAME, "dds", fid->fid,  in p9_client_rename()
1964 	p9_tag_remove(clnt, req);  in p9_client_rename()
1975 	struct p9_client *clnt;  in p9_client_renameat()  local
1978 	clnt = olddirfid->clnt;  in p9_client_renameat()
1984 	req = p9_client_rpc(clnt, P9_TRENAMEAT, "dsds", olddirfid->fid,  in p9_client_renameat()
1994 	p9_tag_remove(clnt, req);  in p9_client_renameat()
2008 	struct p9_client *clnt;  in p9_client_xattrwalk()  local
2012 	clnt = file_fid->clnt;  in p9_client_xattrwalk()
2013 	attr_fid = p9_fid_create(clnt);  in p9_client_xattrwalk()
2022 	req = p9_client_rpc(clnt, P9_TXATTRWALK, "dds",  in p9_client_xattrwalk()
2028 	err = p9pdu_readf(&req->rc, clnt->proto_version, "q", attr_size);  in p9_client_xattrwalk()
2030 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_xattrwalk()
2031 		p9_tag_remove(clnt, req);  in p9_client_xattrwalk()
2034 	p9_tag_remove(clnt, req);  in p9_client_xattrwalk()
2054 	struct p9_client *clnt;  in p9_client_xattrcreate()  local
2060 	clnt = fid->clnt;  in p9_client_xattrcreate()
2061 	req = p9_client_rpc(clnt, P9_TXATTRCREATE, "dsqd",  in p9_client_xattrcreate()
2068 	p9_tag_remove(clnt, req);  in p9_client_xattrcreate()
2077 	struct p9_client *clnt;  in p9_client_readdir()  local
2089 	clnt = fid->clnt;  in p9_client_readdir()
2092 	if (!rsize || rsize > clnt->msize-P9_READDIRHDRSZ)  in p9_client_readdir()
2093 		rsize = clnt->msize - P9_READDIRHDRSZ;  in p9_client_readdir()
2099 	if (clnt->trans_mod->zc_request && rsize > 1024) {  in p9_client_readdir()
2104 		req = p9_client_zc_rpc(clnt, P9_TREADDIR, &to, NULL, rsize, 0,  in p9_client_readdir()
2108 		req = p9_client_rpc(clnt, P9_TREADDIR, "dqd", fid->fid,  in p9_client_readdir()
2116 	err = p9pdu_readf(&req->rc, clnt->proto_version, "D", &count, &dataptr);  in p9_client_readdir()
2118 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_readdir()
2131 	p9_tag_remove(clnt, req);  in p9_client_readdir()
2135 	p9_tag_remove(clnt, req);  in p9_client_readdir()
2145 	struct p9_client *clnt;  in p9_client_mknod_dotl()  local
2149 	clnt = fid->clnt;  in p9_client_mknod_dotl()
2152 	req = p9_client_rpc(clnt, P9_TMKNOD, "dsdddg", fid->fid, name, mode,  in p9_client_mknod_dotl()
2157 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Q", qid);  in p9_client_mknod_dotl()
2159 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_mknod_dotl()
2166 	p9_tag_remove(clnt, req);  in p9_client_mknod_dotl()
2176 	struct p9_client *clnt;  in p9_client_mkdir_dotl()  local
2180 	clnt = fid->clnt;  in p9_client_mkdir_dotl()
2183 	req = p9_client_rpc(clnt, P9_TMKDIR, "dsdg", fid->fid, name, mode,  in p9_client_mkdir_dotl()
2188 	err = p9pdu_readf(&req->rc, clnt->proto_version, "Q", qid);  in p9_client_mkdir_dotl()
2190 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_mkdir_dotl()
2197 	p9_tag_remove(clnt, req);  in p9_client_mkdir_dotl()
2206 	struct p9_client *clnt;  in p9_client_lock_dotl()  local
2210 	clnt = fid->clnt;  in p9_client_lock_dotl()
2216 	req = p9_client_rpc(clnt, P9_TLOCK, "dbdqqds", fid->fid, flock->type,  in p9_client_lock_dotl()
2223 	err = p9pdu_readf(&req->rc, clnt->proto_version, "b", status);  in p9_client_lock_dotl()
2225 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_lock_dotl()
2230 	p9_tag_remove(clnt, req);  in p9_client_lock_dotl()
2239 	struct p9_client *clnt;  in p9_client_getlock_dotl()  local
2243 	clnt = fid->clnt;  in p9_client_getlock_dotl()
2248 	req = p9_client_rpc(clnt, P9_TGETLOCK, "dbqqds", fid->fid,  glock->type,  in p9_client_getlock_dotl()
2254 	err = p9pdu_readf(&req->rc, clnt->proto_version, "bqqds", &glock->type,  in p9_client_getlock_dotl()
2258 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_getlock_dotl()
2265 	p9_tag_remove(clnt, req);  in p9_client_getlock_dotl()
2273 	struct p9_client *clnt;  in p9_client_readlink()  local
2277 	clnt = fid->clnt;  in p9_client_readlink()
2280 	req = p9_client_rpc(clnt, P9_TREADLINK, "d", fid->fid);  in p9_client_readlink()
2284 	err = p9pdu_readf(&req->rc, clnt->proto_version, "s", target);  in p9_client_readlink()
2286 		trace_9p_protocol_dump(clnt, &req->rc);  in p9_client_readlink()
2291 	p9_tag_remove(clnt, req);  in p9_client_readlink()