diff options
Diffstat (limited to 'net/9p/mod.c')
| -rw-r--r-- | net/9p/mod.c | 79 |
1 files changed, 45 insertions, 34 deletions
diff --git a/net/9p/mod.c b/net/9p/mod.c index 6ab36aea7727..85160b52da55 100644 --- a/net/9p/mod.c +++ b/net/9p/mod.c @@ -1,51 +1,34 @@ +// SPDX-License-Identifier: GPL-2.0-only /* - * net/9p/9p.c - * * 9P entry point * * Copyright (C) 2007 by Latchesar Ionkov <lucho@ionkov.net> * Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com> * Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to: - * Free Software Foundation - * 51 Franklin Street, Fifth Floor - * Boston, MA 02111-1301 USA - * */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> +#include <linux/kmod.h> #include <linux/errno.h> #include <linux/sched.h> #include <linux/moduleparam.h> #include <net/9p/9p.h> #include <linux/fs.h> -#include <linux/parser.h> #include <net/9p/client.h> #include <net/9p/transport.h> #include <linux/list.h> #include <linux/spinlock.h> #ifdef CONFIG_NET_9P_DEBUG -unsigned int p9_debug_level = 0; /* feature-rific global debug level */ +unsigned int p9_debug_level; /* feature-rific global debug level */ EXPORT_SYMBOL(p9_debug_level); module_param_named(debug, p9_debug_level, uint, 0); MODULE_PARM_DESC(debug, "9P debugging level"); void _p9_debug(enum p9_debug_flags level, const char *func, - const char *fmt, ...) + const char *fmt, ...) { struct va_format vaf; va_list args; @@ -68,10 +51,7 @@ void _p9_debug(enum p9_debug_flags level, const char *func, EXPORT_SYMBOL(_p9_debug); #endif -/* - * Dynamic Transport Registration Routines - * - */ +/* Dynamic Transport Registration Routines */ static DEFINE_SPINLOCK(v9fs_trans_lock); static LIST_HEAD(v9fs_trans_list); @@ -102,12 +82,7 @@ void v9fs_unregister_trans(struct p9_trans_module *m) } EXPORT_SYMBOL(v9fs_unregister_trans); -/** - * v9fs_get_trans_by_name - get transport with the matching name - * @name: string identifying transport - * - */ -struct p9_trans_module *v9fs_get_trans_by_name(char *s) +static struct p9_trans_module *_p9_get_trans_by_name(const char *s) { struct p9_trans_module *t, *found = NULL; @@ -121,10 +96,36 @@ struct p9_trans_module *v9fs_get_trans_by_name(char *s) } spin_unlock(&v9fs_trans_lock); + + return found; +} + +/** + * v9fs_get_trans_by_name - get transport with the matching name + * @s: string identifying transport + * + */ +struct p9_trans_module *v9fs_get_trans_by_name(const char *s) +{ + struct p9_trans_module *found = NULL; + + found = _p9_get_trans_by_name(s); + +#ifdef CONFIG_MODULES + if (!found) { + request_module("9p-%s", s); + found = _p9_get_trans_by_name(s); + } +#endif + return found; } EXPORT_SYMBOL(v9fs_get_trans_by_name); +static const char * const v9fs_default_transports[] = { + "virtio", "tcp", "fd", "unix", "xen", "rdma", +}; + /** * v9fs_get_default_trans - get the default transport * @@ -133,6 +134,7 @@ EXPORT_SYMBOL(v9fs_get_trans_by_name); struct p9_trans_module *v9fs_get_default_trans(void) { struct p9_trans_module *t, *found = NULL; + int i; spin_lock(&v9fs_trans_lock); @@ -150,6 +152,10 @@ struct p9_trans_module *v9fs_get_default_trans(void) } spin_unlock(&v9fs_trans_lock); + + for (i = 0; !found && i < ARRAY_SIZE(v9fs_default_transports); i++) + found = v9fs_get_trans_by_name(v9fs_default_transports[i]); + return found; } EXPORT_SYMBOL(v9fs_get_default_trans); @@ -164,6 +170,7 @@ void v9fs_put_trans(struct p9_trans_module *m) if (m) module_put(m->owner); } +EXPORT_SYMBOL(v9fs_put_trans); /** * init_p9 - Initialize module @@ -171,11 +178,14 @@ void v9fs_put_trans(struct p9_trans_module *m) */ static int __init init_p9(void) { - int ret = 0; + int ret; + + ret = p9_client_init(); + if (ret) + return ret; p9_error_init(); pr_info("Installing 9P2000 support\n"); - p9_trans_fd_init(); return ret; } @@ -189,7 +199,7 @@ static void __exit exit_p9(void) { pr_info("Unloading 9P2000 support\n"); - p9_trans_fd_exit(); + p9_client_exit(); } module_init(init_p9) @@ -199,3 +209,4 @@ MODULE_AUTHOR("Latchesar Ionkov <lucho@ionkov.net>"); MODULE_AUTHOR("Eric Van Hensbergen <ericvh@gmail.com>"); MODULE_AUTHOR("Ron Minnich <rminnich@lanl.gov>"); MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Plan 9 Resource Sharing Support (9P2000)"); |