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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/linux/concap.h | |
download | linux-stable-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz linux-stable-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 linux-stable-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/linux/concap.h')
-rw-r--r-- | include/linux/concap.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/include/linux/concap.h b/include/linux/concap.h new file mode 100644 index 000000000000..27304651d700 --- /dev/null +++ b/include/linux/concap.h @@ -0,0 +1,113 @@ +/* $Id: concap.h,v 1.3.2.2 2004/01/12 23:08:35 keil Exp $ + * + * Copyright 1997 by Henner Eisen <eis@baty.hanse.de> + * + * This software may be used and distributed according to the terms + * of the GNU General Public License, incorporated herein by reference. + */ + +#ifndef _LINUX_CONCAP_H +#define _LINUX_CONCAP_H +#ifdef __KERNEL__ +#include <linux/skbuff.h> +#include <linux/netdevice.h> + +/* Stuff to support encapsulation protocols genericly. The encapsulation + protocol is processed at the uppermost layer of the network interface. + + Based on a ideas developed in a 'synchronous device' thread in the + linux-x25 mailing list contributed by Alan Cox, Thomasz Motylewski + and Jonathan Naylor. + + For more documetation on this refer to Documentation/isdn/README.concap +*/ + +struct concap_proto_ops; +struct concap_device_ops; + +/* this manages all data needed by the encapsulation protocol + */ +struct concap_proto{ + struct net_device *net_dev; /* net device using our service */ + struct concap_device_ops *dops; /* callbacks provided by device */ + struct concap_proto_ops *pops; /* callbacks provided by us */ + spinlock_t lock; + int flags; + void *proto_data; /* protocol specific private data, to + be accessed via *pops methods only*/ + /* + : + whatever + : + */ +}; + +/* Operations to be supported by the net device. Called by the encapsulation + * protocol entity. No receive method is offered because the encapsulation + * protocol directly calls netif_rx(). + */ +struct concap_device_ops{ + + /* to request data is submitted by device*/ + int (*data_req)(struct concap_proto *, struct sk_buff *); + + /* Control methods must be set to NULL by devices which do not + support connection control.*/ + /* to request a connection is set up */ + int (*connect_req)(struct concap_proto *); + + /* to request a connection is released */ + int (*disconn_req)(struct concap_proto *); +}; + +/* Operations to be supported by the encapsulation protocol. Called by + * device driver. + */ +struct concap_proto_ops{ + + /* create a new encapsulation protocol instance of same type */ + struct concap_proto * (*proto_new) (void); + + /* delete encapsulation protocol instance and free all its resources. + cprot may no loger be referenced after calling this */ + void (*proto_del)(struct concap_proto *cprot); + + /* initialize the protocol's data. To be called at interface startup + or when the device driver resets the interface. All services of the + encapsulation protocol may be used after this*/ + int (*restart)(struct concap_proto *cprot, + struct net_device *ndev, + struct concap_device_ops *dops); + + /* inactivate an encapsulation protocol instance. The encapsulation + protocol may not call any *dops methods after this. */ + int (*close)(struct concap_proto *cprot); + + /* process a frame handed down to us by upper layer */ + int (*encap_and_xmit)(struct concap_proto *cprot, struct sk_buff *skb); + + /* to be called for each data entity received from lower layer*/ + int (*data_ind)(struct concap_proto *cprot, struct sk_buff *skb); + + /* to be called when a connection was set up/down. + Protocols that don't process these primitives might fill in + dummy methods here */ + int (*connect_ind)(struct concap_proto *cprot); + int (*disconn_ind)(struct concap_proto *cprot); + /* + Some network device support functions, like net_header(), rebuild_header(), + and others, that depend solely on the encapsulation protocol, might + be provided here, too. The net device would just fill them in its + corresponding fields when it is opened. + */ +}; + +/* dummy restart/close/connect/reset/disconn methods + */ +extern int concap_nop(struct concap_proto *cprot); + +/* dummy submit method + */ +extern int concap_drop_skb(struct concap_proto *cprot, struct sk_buff *skb); +#endif +#endif |