222 static void pnfs_init_server(struct nfs_server *server)  in pnfs_init_server()  argument
224 	rpc_init_wait_queue(&server->roc_rpcwaitq, "pNFS ROC");  in pnfs_init_server()
236 static void pnfs_init_server(struct nfs_server *server)  in pnfs_init_server()  argument
456  * Mark a server as ready or failed
570 static void nfs_destroy_server(struct nfs_server *server)  in nfs_destroy_server()  argument
572 	if (server->nlm_host)  in nfs_destroy_server()
573 		nlmclnt_done(server->nlm_host);  in nfs_destroy_server()
579 static int nfs_start_lockd(struct nfs_server *server)  in nfs_start_lockd()  argument
582 	struct nfs_client *clp = server->nfs_client;  in nfs_start_lockd()
588 		.noresvport	= server->flags & NFS_MOUNT_NORESVPORT ?  in nfs_start_lockd()
592 		.cred		= server->cred,  in nfs_start_lockd()
597 	if ((server->flags & NFS_MOUNT_LOCAL_FLOCK) &&  in nfs_start_lockd()
598 			(server->flags & NFS_MOUNT_LOCAL_FCNTL))  in nfs_start_lockd()
615 	server->nlm_host = host;  in nfs_start_lockd()
616 	server->destroy = nfs_destroy_server;  in nfs_start_lockd()
617 	nfs_sysfs_link_rpc_client(server, nlmclnt_rpc_clnt(host), NULL);  in nfs_start_lockd()
624 int nfs_init_server_rpcclient(struct nfs_server *server,  in nfs_init_server_rpcclient()  argument
628 	struct nfs_client *clp = server->nfs_client;  in nfs_init_server_rpcclient()
630 	server->client = rpc_clone_client_set_auth(clp->cl_rpcclient,  in nfs_init_server_rpcclient()
632 	if (IS_ERR(server->client)) {  in nfs_init_server_rpcclient()
634 		return PTR_ERR(server->client);  in nfs_init_server_rpcclient()
637 	memcpy(&server->client->cl_timeout_default,  in nfs_init_server_rpcclient()
639 			sizeof(server->client->cl_timeout_default));  in nfs_init_server_rpcclient()
640 	server->client->cl_timeout = &server->client->cl_timeout_default;  in nfs_init_server_rpcclient()
641 	server->client->cl_softrtry = 0;  in nfs_init_server_rpcclient()
642 	if (server->flags & NFS_MOUNT_SOFTERR)  in nfs_init_server_rpcclient()
643 		server->client->cl_softerr = 1;  in nfs_init_server_rpcclient()
644 	if (server->flags & NFS_MOUNT_SOFT)  in nfs_init_server_rpcclient()
645 		server->client->cl_softrtry = 1;  in nfs_init_server_rpcclient()
647 	nfs_sysfs_link_rpc_client(server, server->client, NULL);  in nfs_init_server_rpcclient()
686 static int nfs_init_server(struct nfs_server *server,  in nfs_init_server()  argument
699 		.cred = server->cred,  in nfs_init_server()
717 	server->nfs_client = clp;  in nfs_init_server()
718 	nfs_sysfs_add_server(server);  in nfs_init_server()
719 	nfs_sysfs_link_rpc_client(server, clp->cl_rpcclient, "_state");  in nfs_init_server()
722 	server->flags = ctx->flags;  in nfs_init_server()
723 	server->options = ctx->options;  in nfs_init_server()
724 	server->caps |= NFS_CAP_HARDLINKS | NFS_CAP_SYMLINKS;  in nfs_init_server()
728 		server->fattr_valid = NFS_ATTR_FATTR_V2;  in nfs_init_server()
731 		server->fattr_valid = NFS_ATTR_FATTR_V3;  in nfs_init_server()
734 		server->fattr_valid = NFS_ATTR_FATTR_V4;  in nfs_init_server()
738 		server->rsize = nfs_io_size(ctx->rsize, clp->cl_proto);  in nfs_init_server()
740 		server->wsize = nfs_io_size(ctx->wsize, clp->cl_proto);  in nfs_init_server()
742 	server->acregmin = ctx->acregmin * HZ;  in nfs_init_server()
743 	server->acregmax = ctx->acregmax * HZ;  in nfs_init_server()
744 	server->acdirmin = ctx->acdirmin * HZ;  in nfs_init_server()
745 	server->acdirmax = ctx->acdirmax * HZ;  in nfs_init_server()
748 	error = nfs_start_lockd(server);  in nfs_init_server()
752 	server->port = ctx->nfs_server.port;  in nfs_init_server()
753 	server->auth_info = ctx->auth_info;  in nfs_init_server()
755 	error = nfs_init_server_rpcclient(server, &timeparms,  in nfs_init_server()
762 		memcpy(&server->mountd_address, &ctx->mount_server.address,  in nfs_init_server()
764 		server->mountd_addrlen = ctx->mount_server.addrlen;  in nfs_init_server()
766 	server->mountd_version = ctx->mount_server.version;  in nfs_init_server()
767 	server->mountd_port = ctx->mount_server.port;  in nfs_init_server()
768 	server->mountd_protocol = ctx->mount_server.protocol;  in nfs_init_server()
770 	server->namelen  = ctx->namlen;  in nfs_init_server()
774 	server->nfs_client = NULL;  in nfs_init_server()
780  * Load up the server record from information gained in an fsinfo record
782 static void nfs_server_set_fsinfo(struct nfs_server *server,  in nfs_server_set_fsinfo()  argument
785 	struct nfs_client *clp = server->nfs_client;  in nfs_server_set_fsinfo()
789 	if (server->rsize == 0)  in nfs_server_set_fsinfo()
790 		server->rsize = nfs_io_size(fsinfo->rtpref, clp->cl_proto);  in nfs_server_set_fsinfo()
791 	if (server->wsize == 0)  in nfs_server_set_fsinfo()
792 		server->wsize = nfs_io_size(fsinfo->wtpref, clp->cl_proto);  in nfs_server_set_fsinfo()
794 	if (fsinfo->rtmax >= 512 && server->rsize > fsinfo->rtmax)  in nfs_server_set_fsinfo()
795 		server->rsize = nfs_io_size(fsinfo->rtmax, clp->cl_proto);  in nfs_server_set_fsinfo()
796 	if (fsinfo->wtmax >= 512 && server->wsize > fsinfo->wtmax)  in nfs_server_set_fsinfo()
797 		server->wsize = nfs_io_size(fsinfo->wtmax, clp->cl_proto);  in nfs_server_set_fsinfo()
799 	raw_max_rpc_payload = rpc_max_payload(server->client);  in nfs_server_set_fsinfo()
802 	if (server->rsize > max_rpc_payload)  in nfs_server_set_fsinfo()
803 		server->rsize = max_rpc_payload;  in nfs_server_set_fsinfo()
804 	if (server->rsize > NFS_MAX_FILE_IO_SIZE)  in nfs_server_set_fsinfo()
805 		server->rsize = NFS_MAX_FILE_IO_SIZE;  in nfs_server_set_fsinfo()
806 	server->rpages = (server->rsize + PAGE_SIZE - 1) >> PAGE_SHIFT;  in nfs_server_set_fsinfo()
808 	if (server->wsize > max_rpc_payload)  in nfs_server_set_fsinfo()
809 		server->wsize = max_rpc_payload;  in nfs_server_set_fsinfo()
810 	if (server->wsize > NFS_MAX_FILE_IO_SIZE)  in nfs_server_set_fsinfo()
811 		server->wsize = NFS_MAX_FILE_IO_SIZE;  in nfs_server_set_fsinfo()
812 	server->wpages = (server->wsize + PAGE_SIZE - 1) >> PAGE_SHIFT;  in nfs_server_set_fsinfo()
814 	server->wtmult = nfs_block_bits(fsinfo->wtmult, NULL);  in nfs_server_set_fsinfo()
816 	server->dtsize = nfs_block_size(fsinfo->dtpref, NULL);  in nfs_server_set_fsinfo()
817 	if (server->dtsize > NFS_MAX_FILE_IO_SIZE)  in nfs_server_set_fsinfo()
818 		server->dtsize = NFS_MAX_FILE_IO_SIZE;  in nfs_server_set_fsinfo()
819 	if (server->dtsize > server->rsize)  in nfs_server_set_fsinfo()
820 		server->dtsize = server->rsize;  in nfs_server_set_fsinfo()
822 	if (server->flags & NFS_MOUNT_NOAC) {  in nfs_server_set_fsinfo()
823 		server->acregmin = server->acregmax = 0;  in nfs_server_set_fsinfo()
824 		server->acdirmin = server->acdirmax = 0;  in nfs_server_set_fsinfo()
827 	server->maxfilesize = fsinfo->maxfilesize;  in nfs_server_set_fsinfo()
829 	server->time_delta = fsinfo->time_delta;  in nfs_server_set_fsinfo()
830 	server->change_attr_type = fsinfo->change_attr_type;  in nfs_server_set_fsinfo()
832 	server->clone_blksize = fsinfo->clone_blksize;  in nfs_server_set_fsinfo()
834 	rpc_setbufsize(server->client, server->wsize + 100, server->rsize + 100);  in nfs_server_set_fsinfo()
840 	server->gxasize = min_t(unsigned int, raw_max_rpc_payload,  in nfs_server_set_fsinfo()
842 	server->sxasize = min_t(unsigned int, raw_max_rpc_payload,  in nfs_server_set_fsinfo()
844 	server->lxasize = min_t(unsigned int, raw_max_rpc_payload,  in nfs_server_set_fsinfo()
848 		server->caps |= NFS_CAP_XATTR;  in nfs_server_set_fsinfo()
855 static int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, struct nfs_fattr *fatt…  in nfs_probe_fsinfo()  argument
858 	struct nfs_client *clp = server->nfs_client;  in nfs_probe_fsinfo()
862 		error = clp->rpc_ops->set_capabilities(server, mntfh);  in nfs_probe_fsinfo()
870 	error = clp->rpc_ops->fsinfo(server, mntfh, &fsinfo);  in nfs_probe_fsinfo()
874 	nfs_server_set_fsinfo(server, &fsinfo);  in nfs_probe_fsinfo()
877 	if (server->namelen == 0) {  in nfs_probe_fsinfo()
883 		if (clp->rpc_ops->pathconf(server, mntfh, &pathinfo) >= 0)  in nfs_probe_fsinfo()
884 			server->namelen = pathinfo.max_namelen;  in nfs_probe_fsinfo()
888 			(server->caps & NFS_CAP_FS_LOCATIONS &&  in nfs_probe_fsinfo()
889 			 (server->flags & NFS_MOUNT_TRUNK_DISCOVERY))) {  in nfs_probe_fsinfo()
890 		error = clp->rpc_ops->discover_trunking(server, mntfh);  in nfs_probe_fsinfo()
904 int nfs_probe_server(struct nfs_server *server, struct nfs_fh *mntfh)  in nfs_probe_server()  argument
913 	/* Sanity: the probe won't work if the destination server  in nfs_probe_server()
915 	error = nfs_probe_fsinfo(server, mntfh, fattr);  in nfs_probe_server()
923  * Copy useful information when duplicating a server record
941 void nfs_server_insert_lists(struct nfs_server *server)  in nfs_server_insert_lists()  argument
943 	struct nfs_client *clp = server->nfs_client;  in nfs_server_insert_lists()
947 	list_add_tail_rcu(&server->client_link, &clp->cl_superblocks);  in nfs_server_insert_lists()
948 	list_add_tail(&server->master_link, &nn->nfs_volume_list);  in nfs_server_insert_lists()
955 void nfs_server_remove_lists(struct nfs_server *server)  in nfs_server_remove_lists()  argument
957 	struct nfs_client *clp = server->nfs_client;  in nfs_server_remove_lists()
964 	list_del_rcu(&server->client_link);  in nfs_server_remove_lists()
967 	list_del(&server->master_link);  in nfs_server_remove_lists()
977  * Allocate and initialise a server record
981 	struct nfs_server *server;  in nfs_alloc_server()  local
983 	server = kzalloc(sizeof(struct nfs_server), GFP_KERNEL);  in nfs_alloc_server()
984 	if (!server)  in nfs_alloc_server()
987 	server->s_sysfs_id = ida_alloc(&s_sysfs_ids, GFP_KERNEL);  in nfs_alloc_server()
988 	if (server->s_sysfs_id < 0) {  in nfs_alloc_server()
989 		kfree(server);  in nfs_alloc_server()
993 	server->client = server->client_acl = ERR_PTR(-EINVAL);  in nfs_alloc_server()
996 	INIT_LIST_HEAD(&server->client_link);  in nfs_alloc_server()
997 	INIT_LIST_HEAD(&server->master_link);  in nfs_alloc_server()
998 	INIT_LIST_HEAD(&server->delegations);  in nfs_alloc_server()
999 	INIT_LIST_HEAD(&server->layouts);  in nfs_alloc_server()
1000 	INIT_LIST_HEAD(&server->state_owners_lru);  in nfs_alloc_server()
1001 	INIT_LIST_HEAD(&server->ss_copies);  in nfs_alloc_server()
1002 	INIT_LIST_HEAD(&server->ss_src_copies);  in nfs_alloc_server()
1004 	atomic_set(&server->active, 0);  in nfs_alloc_server()
1006 	server->io_stats = nfs_alloc_iostats();  in nfs_alloc_server()
1007 	if (!server->io_stats) {  in nfs_alloc_server()
1008 		kfree(server);  in nfs_alloc_server()
1012 	server->change_attr_type = NFS4_CHANGE_TYPE_IS_UNDEFINED;  in nfs_alloc_server()
1014 	init_waitqueue_head(&server->write_congestion_wait);  in nfs_alloc_server()
1015 	atomic_long_set(&server->writeback, 0);  in nfs_alloc_server()
1017 	atomic64_set(&server->owner_ctr, 0);  in nfs_alloc_server()
1019 	pnfs_init_server(server);  in nfs_alloc_server()
1020 	rpc_init_wait_queue(&server->uoc_rpcwaitq, "NFS UOC");  in nfs_alloc_server()
1022 	return server;  in nfs_alloc_server()
1028 	struct nfs_server *server = container_of(p, struct nfs_server, rcu);  in delayed_free()  local
1030 	nfs_free_iostats(server->io_stats);  in delayed_free()
1031 	kfree(server);  in delayed_free()
1035  * Free up a server record
1037 void nfs_free_server(struct nfs_server *server)  in nfs_free_server()  argument
1039 	nfs_server_remove_lists(server);  in nfs_free_server()
1041 	if (server->destroy != NULL)  in nfs_free_server()
1042 		server->destroy(server);  in nfs_free_server()
1044 	if (!IS_ERR(server->client_acl))  in nfs_free_server()
1045 		rpc_shutdown_client(server->client_acl);  in nfs_free_server()
1046 	if (!IS_ERR(server->client))  in nfs_free_server()
1047 		rpc_shutdown_client(server->client);  in nfs_free_server()
1049 	nfs_put_client(server->nfs_client);  in nfs_free_server()
1051 	if (server->kobj.state_initialized) {  in nfs_free_server()
1052 		nfs_sysfs_remove_server(server);  in nfs_free_server()
1053 		kobject_put(&server->kobj);  in nfs_free_server()
1055 	ida_free(&s_sysfs_ids, server->s_sysfs_id);  in nfs_free_server()
1057 	put_cred(server->cred);  in nfs_free_server()
1059 	call_rcu(&server->rcu, delayed_free);  in nfs_free_server()
1065  * - keyed on server and FSID
1070 	struct nfs_server *server;  in nfs_create_server()  local
1074 	server = nfs_alloc_server();  in nfs_create_server()
1075 	if (!server)  in nfs_create_server()
1078 	server->cred = get_cred(fc->cred);  in nfs_create_server()
1086 	error = nfs_init_server(server, fc);  in nfs_create_server()
1091 	error = nfs_probe_fsinfo(server, ctx->mntfh, fattr);  in nfs_create_server()
1094 	if (server->nfs_client->rpc_ops->version == 3) {  in nfs_create_server()
1095 		if (server->namelen == 0 || server->namelen > NFS3_MAXNAMLEN)  in nfs_create_server()
1096 			server->namelen = NFS3_MAXNAMLEN;  in nfs_create_server()
1098 			server->caps |= NFS_CAP_READDIRPLUS;  in nfs_create_server()
1100 		if (server->namelen == 0 || server->namelen > NFS2_MAXNAMLEN)  in nfs_create_server()
1101 			server->namelen = NFS2_MAXNAMLEN;  in nfs_create_server()
1105 		error = ctx->nfs_mod->rpc_ops->getattr(server, ctx->mntfh,  in nfs_create_server()
1112 	memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));  in nfs_create_server()
1114 	dprintk("Server FSID: %llx:%llx\n",  in nfs_create_server()
1115 		(unsigned long long) server->fsid.major,  in nfs_create_server()
1116 		(unsigned long long) server->fsid.minor);  in nfs_create_server()
1118 	nfs_server_insert_lists(server);  in nfs_create_server()
1119 	server->mount_time = jiffies;  in nfs_create_server()
1121 	return server;  in nfs_create_server()
1125 	nfs_free_server(server);  in nfs_create_server()
1131  * Clone an NFS2, NFS3 or NFS4 server record
1138 	struct nfs_server *server;  in nfs_clone_server()  local
1141 	server = nfs_alloc_server();  in nfs_clone_server()
1142 	if (!server)  in nfs_clone_server()
1145 	server->cred = get_cred(source->cred);  in nfs_clone_server()
1148 	server->nfs_client = source->nfs_client;  in nfs_clone_server()
1149 	server->destroy = source->destroy;  in nfs_clone_server()
1150 	refcount_inc(&server->nfs_client->cl_count);  in nfs_clone_server()
1151 	nfs_server_copy_userdata(server, source);  in nfs_clone_server()
1153 	server->fsid = fattr->fsid;  in nfs_clone_server()
1155 	nfs_sysfs_add_server(server);  in nfs_clone_server()
1157 	nfs_sysfs_link_rpc_client(server,  in nfs_clone_server()
1158 		server->nfs_client->cl_rpcclient, "_state");  in nfs_clone_server()
1160 	error = nfs_init_server_rpcclient(server,  in nfs_clone_server()
1166 	/* probe the filesystem info for this server filesystem */  in nfs_clone_server()
1167 	error = nfs_probe_server(server, fh);  in nfs_clone_server()
1171 	if (server->namelen == 0 || server->namelen > NFS4_MAXNAMLEN)  in nfs_clone_server()
1172 		server->namelen = NFS4_MAXNAMLEN;  in nfs_clone_server()
1174 	error = nfs_start_lockd(server);  in nfs_clone_server()
1178 	nfs_server_insert_lists(server);  in nfs_clone_server()
1179 	server->mount_time = jiffies;  in nfs_clone_server()
1181 	return server;  in nfs_clone_server()
1184 	nfs_free_server(server);  in nfs_clone_server()
1242  * set up the iterator to start reading from the server list and return the first item
1255  * move to next server
1285 		seq_puts(m, "NV SERVER   PORT USE HOSTNAME\n");  in nfs_server_list_show()
1347 	struct nfs_server *server;  in nfs_volume_list_show()  local
1355 		seq_puts(m, "NV SERVER   PORT DEV          FSID"  in nfs_volume_list_show()
1360 	server = list_entry(v, struct nfs_server, master_link);  in nfs_volume_list_show()
1361 	clp = server->nfs_client;  in nfs_volume_list_show()
1364 		 MAJOR(server->s_dev), MINOR(server->s_dev));  in nfs_volume_list_show()
1367 		 (unsigned long long) server->fsid.major,  in nfs_volume_list_show()
1368 		 (unsigned long long) server->fsid.minor);  in nfs_volume_list_show()
1377 		   nfs_server_fscache_state(server));  in nfs_volume_list_show()