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mISDN: Allow to set a minimum length for transparent data

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If the FIFO of the card is small, many short messages are queued up to
the upper layers and the userspace. This change allows the applications
to set a minimum datalen they want from the drivers.
Create a common control function to avoid code duplication in each
driver.

Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Karsten Keil
2012-05-15 23:51:06 +00:00
committed by David S. Miller
parent 7206e659f6
commit 034005a011
12 changed files with 135 additions and 132 deletions
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9
include/linux/mISDNif.h
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@@ -37,7 +37,7 @@
*/
#define MISDN_MAJOR_VERSION 1
#define MISDN_MINOR_VERSION 1
#define MISDN_RELEASE 28
#define MISDN_RELEASE 29
/* primitives for information exchange
* generell format
@@ -365,6 +365,7 @@ clear_channelmap(u_int nr, u_char *map)
#define MISDN_CTRL_LOOP 0x0001
#define MISDN_CTRL_CONNECT 0x0002
#define MISDN_CTRL_DISCONNECT 0x0004
#define MISDN_CTRL_RX_BUFFER 0x0008
#define MISDN_CTRL_PCMCONNECT 0x0010
#define MISDN_CTRL_PCMDISCONNECT 0x0020
#define MISDN_CTRL_SETPEER 0x0040
@@ -387,6 +388,12 @@ clear_channelmap(u_int nr, u_char *map)
#define MISDN_CTRL_HFC_WD_INIT 0x4009
#define MISDN_CTRL_HFC_WD_RESET 0x400A
/* special RX buffer value for MISDN_CTRL_RX_BUFFER request.p1 is the minimum
* buffer size request.p2 the maximum. Using MISDN_CTRL_RX_SIZE_IGNORE will
* not change the value, but still read back the actual stetting.
*/
#define MISDN_CTRL_RX_SIZE_IGNORE -1
/* socket options */
#define MISDN_TIME_STAMP 0x0001