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Bluetooth: Split buffers into separate pools

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In order to do proper flow control of ACL data to/from the controller
we need to have precise management of the available buffers. Mixing
with the events/commands buffers would make this impossible. This
patch splits the buffer pools into three separate ones:

	1. HCI commands/events
	2. Incoming ACL data
	3. Outgoing ACL data

The total number of available buffers is also increased to match
what's the smallest number supported by current controllers (to avoid
the stack from becoming a bottle neck).

Change-Id: I7e131d61c83a4dda554068d7917c5ee09f2f837d
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Johan Hedberg 2015-04-28 11:51:28 +03:00 • committed by Anas Nashif
commit b6804df02e
3 changed files with 76 additions and 13 deletions
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7
include/bluetooth/buf.h
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@ -91,7 +91,10 @@ size_t bt_buf_headroom(struct bt_buf *buf);
/* Return pointer to the end of the data in the buffer */
#define bt_buf_tail(buf) ((buf)->data + (buf)->len)
/* Initialize the buffers */
void bt_buf_init(void);
/* Initialize the buffers with specified amount of incoming and outgoing
* ACL buffers. The HCI command and event buffers will be allocated from
* whatever is left over.
*/
int bt_buf_init(int acl_in, int acl_out);
#endif /* __BT_BUF_H */