/***
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*
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* stack_mgr.h
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*
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* RTnet - real-time networking subsystem
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* Copyright (C) 2002 Ulrich Marx <marx@fet.uni-hannover.de>
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* 2003-2006 Jan Kiszka <jan.kiszka@web.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifndef __STACK_MGR_H_
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#define __STACK_MGR_H_
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#ifdef __KERNEL__
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#include <linux/list.h>
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#include <rtnet_internal.h>
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#include <rtdev.h>
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/***
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* network layer protocol (layer 3)
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*/
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#define RTPACKET_HASH_TBL_SIZE 64
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#define RTPACKET_HASH_KEY_MASK (RTPACKET_HASH_TBL_SIZE - 1)
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struct rtpacket_type {
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struct list_head list_entry;
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unsigned short type;
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short refcount;
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int (*handler)(struct rtskb *, struct rtpacket_type *);
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int (*err_handler)(struct rtskb *, struct rtnet_device *,
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struct rtpacket_type *);
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bool (*trylock)(struct rtpacket_type *);
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void (*unlock)(struct rtpacket_type *);
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struct module *owner;
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};
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int __rtdev_add_pack(struct rtpacket_type *pt, struct module *module);
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#define rtdev_add_pack(pt) __rtdev_add_pack(pt, THIS_MODULE)
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void rtdev_remove_pack(struct rtpacket_type *pt);
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static inline bool rtdev_lock_pack(struct rtpacket_type *pt)
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{
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return try_module_get(pt->owner);
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}
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static inline void rtdev_unlock_pack(struct rtpacket_type *pt)
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{
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module_put(pt->owner);
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}
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void rt_stack_connect(struct rtnet_device *rtdev, struct rtnet_mgr *mgr);
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void rt_stack_disconnect(struct rtnet_device *rtdev);
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#if IS_ENABLED(CONFIG_XENO_DRIVERS_NET_DRV_LOOPBACK)
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void rt_stack_deliver(struct rtskb *rtskb);
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#endif /* CONFIG_XENO_DRIVERS_NET_DRV_LOOPBACK */
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int rt_stack_mgr_init(struct rtnet_mgr *mgr);
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void rt_stack_mgr_delete(struct rtnet_mgr *mgr);
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void rtnetif_rx(struct rtskb *skb);
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static inline void rtnetif_tx(struct rtnet_device *rtdev)
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{
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}
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static inline void rt_mark_stack_mgr(struct rtnet_device *rtdev)
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{
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rtdm_event_signal(rtdev->stack_event);
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}
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#endif /* __KERNEL__ */
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#endif /* __STACK_MGR_H_ */
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