diff options
| author |   Chris Kelly <ckelly@ozmodevices.com> | 2012-02-20 21:11:37 +0000 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-02-24 09:26:51 -0800 |
| commit | bc3157dde35ac3b2ec12229edcfaca58cd7925c0 (patch) | |
| tree | bcd8140d83c8f984d049bfe7725715cc035b7267 /drivers/staging/ozwpan/ozeltbuf.h | |
| parent | staging: ozwpan: Added basic L2 protocol support (diff) | |
| download | linux-dev-bc3157dde35ac3b2ec12229edcfaca58cd7925c0.tar.xz linux-dev-bc3157dde35ac3b2ec12229edcfaca58cd7925c0.zip | |
staging: ozwpan: Added device state support
Added support for maintaining state and data buffering for devices
connected via the network.
Signed-off-by: Chris Kelly <ckelly@ozmodevices.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/ozwpan/ozeltbuf.h')
| -rw-r--r-- | drivers/staging/ozwpan/ozeltbuf.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/staging/ozwpan/ozeltbuf.h b/drivers/staging/ozwpan/ozeltbuf.h new file mode 100644 index 000000000000..03c12f57b9bb --- /dev/null +++ b/drivers/staging/ozwpan/ozeltbuf.h @@ -0,0 +1,70 @@ +/* ----------------------------------------------------------------------------- + * Copyright (c) 2011 Ozmo Inc + * Released under the GNU General Public License Version 2 (GPLv2). + * ----------------------------------------------------------------------------- + */ +#ifndef _OZELTBUF_H +#define _OZELTBUF_H + +#include "ozprotocol.h" + +/*----------------------------------------------------------------------------- + */ +struct oz_pd; +typedef void (*oz_elt_callback_t)(struct oz_pd *pd, long context); + +struct oz_elt_stream { + struct list_head link; + struct list_head elt_list; + atomic_t ref_count; + unsigned buf_count; + unsigned max_buf_count; + u8 frame_number; + u8 id; +}; + +#define OZ_MAX_ELT_PAYLOAD 255 +struct oz_elt_info { + struct list_head link; + struct list_head link_order; + u8 flags; + u8 app_id; + oz_elt_callback_t callback; + long context; + struct oz_elt_stream *stream; + u8 data[sizeof(struct oz_elt) + OZ_MAX_ELT_PAYLOAD]; + int length; + unsigned magic; +}; +/* Flags values */ +#define OZ_EI_F_MARKED 0x1 + +struct oz_elt_buf { + spinlock_t lock; + struct list_head stream_list; + struct list_head order_list; + struct list_head isoc_list; + struct list_head *elt_pool; + int free_elts; + int max_free_elts; + u8 tx_seq_num[OZ_NB_APPS]; +}; + +int oz_elt_buf_init(struct oz_elt_buf *buf); +void oz_elt_buf_term(struct oz_elt_buf *buf); +struct oz_elt_info *oz_elt_info_alloc(struct oz_elt_buf *buf); +void oz_elt_info_free(struct oz_elt_buf *buf, struct oz_elt_info *ei); +void oz_elt_info_free_chain(struct oz_elt_buf *buf, struct list_head *list); +int oz_elt_stream_create(struct oz_elt_buf *buf, u8 id, int max_buf_count); +int oz_elt_stream_delete(struct oz_elt_buf *buf, u8 id); +void oz_elt_stream_get(struct oz_elt_stream *st); +void oz_elt_stream_put(struct oz_elt_stream *st); +int oz_queue_elt_info(struct oz_elt_buf *buf, u8 isoc, u8 id, + struct oz_elt_info *ei); +int oz_select_elts_for_tx(struct oz_elt_buf *buf, u8 isoc, unsigned *len, + unsigned max_len, struct list_head *list); +int oz_are_elts_available(struct oz_elt_buf *buf); +void oz_trim_elt_pool(struct oz_elt_buf *buf); + +#endif /* _OZELTBUF_H */ + |